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Sample records for pulmonar uma cirurgia

  1. [Simultaneous pulmonar, laryngeal and lingual affectation by Mycobacterium tuberculosis].

    PubMed

    Díaz Manzano, J A; Castillo Romero, J L; Padilla Romero, M J; Sánchez Laínez, J J; Castillo Aguilar, C; Cegarra Navarro, M F

    2007-01-01

    The incidence of tuberculosis has lately increased in developed countries. The most frequent affectation is the pulmonar one and in the ORL area the laryngeal. The lingual affectation is exceptional. We present a case of a man 39 years old, with bilateral pulmonar, left vocal cord and mobile tongue affectation, negative Mantoux, positive spit culture and presence of acido-alcohol resistent bacillus in lingual and laryngeal biopsies. After antituberculosis treatment during 6 months the laryngeal and lingual lesions disappeared. We have only found two cases published of simultaneous tuberculosis in these three localisations in the last 30 years.

  2. [Tumoral microembolism and cor-pulmonar as manifestation of hepatocelular carcinoma].

    PubMed

    Canelo Aybar, Carlos Gilberto; Cuadra Urteaga, José Luís; Fujii, F; Romaní Romaní, Franco; Atencia Matute, Fernando Alonso; Verona Rubio, Rogger Oscar

    2008-01-01

    The tumour pulmonary micro-embolism is a rare condition characterized by the occlusion of pulmonary small arteries, arteriolas, and alveolar capillaries septales, accompanied of trombosis. Occasionally the development of pulmonary hypertension is the first manifestation of an occult neoplasia, in series of autopsies, an incidence from 3 to 26% has been reported in solid tumors, being clinical evident in 8%. Few cases have documented the development of this condition in patients with carcinoma hepatocelular, we report the case of a 16-year-old male who comes to the emergency with signs of cardiac insufficiency and cor pulmonare whose anatomopatological study confirmed a tumour massive microembolic compromise at pulmonary level and hepatocarcinoma.

  3. Uma Krishnaswami and International Imaginings

    ERIC Educational Resources Information Center

    Aldama, Frederick Luis

    2006-01-01

    This article presents an interview with South Asian children's book and young adult fiction writer, Uma Krishnaswami. The interviewer states that "in all her creative endeavors Uma's keen sense of detail, narrative voice, and characterization complicate and humanize portrayals of multicultural peoples worldwide." In this interview, Krishnaswami…

  4. [Pulmonary involvement in systemic sclerosis. Alveolitis, fibrosis and pulmonar arterial hypertension].

    PubMed

    Navarro, Carmen

    2006-11-01

    Pulmonary involvement in systemic sclerosis. Alveolitis, fibrosis and pulmonar arterial hypertension Lung disease is present in most of the patients with systemic sclerosis and is now the most important cause of mortality. Interstitial lung disease and pulmonary hypertension are, so far, the main disorders found and both are difficult to detect at the earliest stages. However, diagnostic tools such as immunological test, lung function test, high resolution CT, bronchoalveolar lavage, echocardiography, right-side cardiac catheterization, or lung biopsy are necessary to accurately evaluate the clinical status and allow to improve the management organ-specific ad hoc. Progress in immunological and vascular therapies as well as other emergence drugs offer new expectations to scleroderma patients. Copyright © 2006 Elsevier España S.L. Barcelona. Published by Elsevier Espana. All rights reserved.

  5. Interstellar Material towards eta UMa

    NASA Astrophysics Data System (ADS)

    Frisch, P. C.; Jenkins, E. B.; Welty, D. E.; Johns-Krull, C.

    1999-05-01

    The star eta UMa (B3 V, vsini=205 km s(-1) , d=31 pc, l=101(o) , b=+65(o) ) samples nearby interstellar gas in a high latitude direction relatively devoid of material. IMAPS, Hubble GHRS Echelle, and ground based optical data are combined to present a comprehensive picture of the interstellar material (ISM) in this direction. Two main components dominate: the blue-shifted component which appears to be ionized, and the dominant, red-shifted, component which exhibits a low electron density ( ~ 0.2 cm(-3) ). However, the Mg(o/Mg^+) ratio and C(+) fine-structure lines yield different ionizations, depending on the adopted temperature, similar to differences found in the diffuse material towards 23 Ori (Welty et al. 1999). The IMAPS and GHRS data give C, N, O, and Fe column densities, which form the basis for calculating the gas-to-dust mass ratio for the main component using a ``missing mass'' calculation combined with an assumed reference abundance (Frisch et al. 1999). Comparing the eta UMa value with other diffuse cloud values then further constrains uncertainties in N(H(o) ) values for this sightline.

  6. Orbital period variations of two W UMa-type binaries: UY UMa and EF Boo

    NASA Astrophysics Data System (ADS)

    Yu, Yun-Xia; Zhang, Xu-Dong; Hu, Ke; Xiang, Fu-Yuan

    2017-08-01

    The orbital period variations of two W UMa-type contact binaries, UY UMa and EF Boo, are analyzed by using all available times of light minimum. It is detected that the general trends of their (O - C) curves show an upward parabolic variation, which reveals their continuous period increases at the rates of dP / dt = 2.545 ×10-7 days yr-1 and dP / dt = 2.623 ×10-7 days yr-1 , respectively. Meanwhile, UY UMa also shows a cyclic period variation with a small amplitude of A = 0.0026 days superposed on the long-term increase. Due to their contact configurations, the secular period increases are interpreted as a result of mass transfer from the less massive component to the more massive one. The cyclic period variation of UY UMa may be interpreted in terms of either the magnetic activity or the light time effect.

  7. A new period for AX UMa.

    NASA Astrophysics Data System (ADS)

    Boninsegna, R.

    1985-05-01

    In 1958, G. Romano photographically discovered AX UMa. He proposed a first ephemeris for this RRab-type variable, in 1964. During three seasons, ten maxima were recordd by three GEOS visual observers. The reduction of the observations clearly shows that the period found by Romano is no longer valid. The new elements proposed by this paper are as follows: Max = hel. JD 2,445,382.559(+/-6) + 0.53491(+/-1) E (95% confidence interval for the error bands).

  8. GHRS Observations of LISM towards eta UMa

    NASA Astrophysics Data System (ADS)

    Frisch, P. C.

    1998-01-01

    The star eta UMa (l=101(deg) , b=+65(deg) , d=31 pc) samples local interstellar matter (LISM) in a high latitude region. The Sun is ``above'' most of the mass of the Local Fluff cloud complex, yielding low total interstellar column densities towards eta UMa. Thus cloud properties can be determined with minimal confusion caused by velocity component blending in this sightline. The physical properties of the cloud surrounding the solar system become the boundary conditions of the solar system. A key property of the surrounding cloud is the proton density, since the Alfven velocity regulates the formation of a bow shock around the heliosphere, and since charge exchange between interstellar p(+) and H(deg) yields a pile-up of H(deg) at the heliopause. As a result, the interstellar electron density in the surrounding cloud is an important parameter in understanding the configuration of the outer heliosphere regions. We present GHRS Echelle A and Echelle B data on C({deg) *}, C(deg) , Mg(deg) and Mg(+) . These data allow us to compare electron densities as estimated from the ratios N(C({deg) *})/N(C(deg) ) versus N(Mg(deg) )/N(Mg(+) ) for a relatively simple sightline. These electron densities are also compared to electron densities determined from optical Ca(+) observations towards eta UMa by Frisch and Welty (in preparation).

  9. FLIP-FLOP ACTIVITY ON THE W UMa-TYPE BINARY SYSTEM HH UMa

    SciTech Connect

    Wang, Kun; Zhang, Xiaobin; Deng, Licai; Luo, Changqing; Luo, Yangping; Zhang, Jun

    2015-05-20

    We report the discovery of flip-flop activity in a W UMa-type binary. A long-term multi-color photometric surveillance of HH UMa was carried out with three sets of light curves obtained over six weeks. The light curves of the eclipsing binary presented marked asymmetry and rapid interchange between the two light maxima. During the observations from 2014 February to 2014 April, the spot distortion phase jumped between phases 0.25 and 0.75 twice, a typical indication of flip-flop activity. We applied the Wilson–Devinney method to analyze the three light curves. The results indicate that HH UMa is a partially eclipsing contact system of A subtype with an obviously asymmetric light curve. The observed light curves can be modeled by assuming that there are two dark spots on the massive primary component that are almost persistently located around phases 0.25 and 0.75, but can interchange their intensities. We further suggest that a plausible scenario for explaining the properties of those dark spots is strong surface magnetic activity with a sudden reversal of the more active longitude. We therefore conclude that HH UMa is very likely a W UMa-type system displaying flip-flop activity.

  10. High speed photometry of AN UMa

    SciTech Connect

    Imamura, J.N.; Steiman-Cameron, T.Y.; Durisen, R.H.

    1985-01-01

    As a class, the AM Her objects exhibit temporal variability on time scales ranging from seconds to years. Most of the variations can be adequately described by ''shot noise'' models (Cordova and Mason 1982). Exceptions to this are the strictly periodic features modulated on the orbital periods of the systems (typically several hours) and the one to two second features which show up as ''excesses'' of power in the time averaged power spectra of AN UMa (Middleditch 1982) and E1405-451 (Mason et al. 1983; Larsson 1985). It has been suggested that the short time scale features are due to an oscillatory ''instability'' of radiative accretion shocks discovered by Langer, Chanmugam, and Shaviv (1981, 1982). This is an interesting suggestion because, if true, it would allow the masses of the accreting white dwarfs to be inferred and would provide other significant constraints on the physics of the accretion flows (see Langer et al. 1981, 1982; Chevalier and Imamura 1982; Imamura, Wolff, and Durisen 1984; Imamura 1985). Unfortunately, a direct physical relationship between the one to two second optical variations and shock oscillations has not yet been demonstrated. Because of the potential importance of such a result further study of these systems is clearly warranted. In this work, we examine the short time scale behavior of AN UMa in more detail and improve on the work of Middleditch (1982) by resolving the feature in time.

  11. UZ UMa: An RRab star with double-periodic modulation

    NASA Astrophysics Data System (ADS)

    Sodor, A.; Vida, K.; Jurcsik, J.; Varadi, M.; Szeidl, B.; Hurta, Zs.; Dekany, I.; Posztobanyi, K.; Vityi, N.; Szing, A.; Kuti, A.; Lakatos, J.; Nagy, I.; Dobos, V.

    2006-05-01

    Our CCD V observations show that the fundamental mode RR Lyrae star UZ UMa displays double periodic Blazhko modulation of its light curve. The Blazhko periods are 26.7 and approx. 143 days. UZ UMa is estimated to be a relatively metal poor RRab star with [Fe/H]=-1.2.

  12. Pulsational stability of the SX Phe star AE UMa

    NASA Astrophysics Data System (ADS)

    Pena, J. H.; Renteria, A.; Villarreal, C.; Pina, D. S.; Soni, A. A.; Guillen, J.; Vargas, K.; Trejo, O.

    2016-11-01

    From newly determined times of maxima of the SX Phe star AE UMa and a compilation of previous times of maxima, we were able to determine the nature of this star. With uv photometry we determined its physical parameters.

  13. Doppler Tomography of the Dwarf Nova IY UMa During Quiescence

    NASA Astrophysics Data System (ADS)

    Rolfe, D. J.; Abbott, T. M. C.; Haswell, C. A.

    Quiescent Doppler tomography of the newly discovered deeply-eclipsing SU UMa system IY UMa reveals properties of the region where the accretion stream from the donor impacts the edge of the disc. A very strong bright spot is produced and the Keplerian disc emission in the impact region is disrupted or obscured. The differing properties of Hα, Hβ and He I emission will allow physical parameters of the converging flow region to be studied.

  14. Pulse contour analysis calibrated by Trans-pulmonar thermodilution (Picco Plus(®)) for the perioperative management of a caesarean section in a patient with severe cardiomyopathy.

    PubMed

    Brogly, Nicolas; Schiraldi, Renato; Puertas, Laura; Maggi, Genaro; Yanci, Eduardo Alonso; Maldonado, Ever Hugo Martinez; Arévalo, Emilia Guasch; Rodríguez, Fernando Gilsanz

    2016-01-01

    The delivery of cardiac patients is a challenge for the anaesthesiologist, to whom the welfare of both the mother and the foetus is a main issue. In case of caesarean section, advanced monitoring allows to optimize haemodynamic condition and to improve morbidity and mortality. To describe the use of pulse contour analysis calibrated by Trans-pulmonar thermodilution (Picco Plus(®)) for the perioperative management of a caesarean section in a patient with severe cardiomyopathy. We describe the case of a 28-year-old woman with a congenital heart disease who was submitted to a caesarean section under general anaesthesia for maternal pathology and foetal breech presentation. Intra- and post-operative management was optimized by advanced haemodynamic monitorization obtained by pulse contour wave analysis and thermodilution calibration (Picco Plus(®) monitor). The information about preload, myocardial contractility and postcharge was useful in guiding the fluid therapy and the use of vasoactive drugs. This case report illustrates the importance of advanced haemodynamic monitoring with an acceptably invasive device in obstetric patients with high cardiac risk. The increasing experience in advanced haemodynamic management will probably permit to decrease morbidity and mortality of obstetric patients in the future. Copyright © 2013 Sociedade Brasileira de Anestesiologia. Published by Elsevier Editora Ltda. All rights reserved.

  15. [Pulse contour analysis calibrated by Trans-pulmonar thermodilution (Picco Plus(®)) for the perioperative management of a caesarean section in a patient with severe cardiomyopathy].

    PubMed

    Brogly, Nicolas; Schiraldi, Renato; Puertas, Laura; Maggi, Genaro; Yanci, Eduardo Alonso; Maldonado, Ever Hugo Martinez; Arévalo, Emilia Guasch; Rodríguez, Fernando Gilsanz

    2016-01-01

    The delivery of cardiac patients is a challenge for the anaesthesiologist, to whom the welfare of both the mother and the foetus is a main issue. In case of caesarean section, advanced monitoring allows to optimize haemodynamic condition and to improve morbidity and mortality. To describe the use of pulse contour analysis calibrated by Trans-pulmonar thermodilution (Picco Plus(®)) for the perioperative management of a caesarean section in a patient with severe cardiomyopathy. We describe the case of a 28-year-old woman with a congenital heart disease who was submitted to a caesarean section under general anaesthesia for maternal pathology and foetal breech presentation. Intra- and post-operative management was optimized by advanced haemodynamic monitorization obtained by pulse contour wave analysis and thermodilution calibration (Picco Plus(®) monitor). The information about preload, myocardial contractility and postcharge was useful in guiding the fluid therapy and the use of vasoactive drugs. This case report illustrates the importance of advanced haemodynamic monitoring with an acceptably invasive device in obstetric patients with high cardiac risk. The increasing experience in advanced haemodynamic management will probably permit to decrease morbidity and mortality of obstetric patients in the future. Copyright © 2013 Sociedade Brasileira de Anestesiologia. Publicado por Elsevier Editora Ltda. All rights reserved.

  16. BZ UMa and Var Her 04: Orphan TOADS

    NASA Astrophysics Data System (ADS)

    Price, A.; Howell, S.

    2005-05-01

    Both BZ UMa and Var Her 04 are cataclysmic variable stars without a home. Neither fit easily into current classification systems so may extend the population distribution of two unique CV types: UGWZ dwarf novae and intermediate polars. New outburst photometry and archival X-Ray data shed some new light on BZ UMa's high energy state and new spectral and IR observations from Spitzer of dust around the newly discovered cataclysmic variable Var Her 04 may help find it a home as well.

  17. [Pulmonary aspergilloma surgery: a mono-institutional experience].

    PubMed

    Correia, Sílvia da Silva; Pinto, Carlos; Bernardo, João

    2014-01-01

    Introdução: O aspergiloma ou micetoma é resultado da colonização saprofítica de uma cavidade pulmonar pelo Aspergillus. A cirurgia do aspergiloma é o único tratamento eficaz a longo prazo mas a alta incidência de complicações no intra e no pós-operatório fazem desta um tema controverso. Objetivos: Análise da experiência de um Centro de Cirurgia Cardiotorácica nos doentes com aspergiloma pulmonar e avaliação dos fatores que influenciaram o prognóstico após a terapêutica cirúrgica. Material e Métodos: Análise retrospetiva incluindo todos os doentes com diagnóstico de aspergiloma pulmonar sujeitos a cirurgia de ressecção durante um período de 10 anos numa instituição (Junho 2001- Junho 2011). Resultados: Foram incluídos 22 doentes (18 homens), com idade média de 51,0 + 17,4 anos. Destes, 46% dos doentes apresentavam hábitos tabágicos, 41% hábitos alcoólicos acentuados e 50% história pessoal de tuberculose. A maioria dos doentes apresentava um aspergiloma complexo (73%) e 17% um aspergiloma simples. A apresentação clínica mais frequente foi a hemoptise (50%). O procedimento cirúrgico consistiu em ressecção pulmonar atípica em 55%, lobectomia em 27% e pneumectomia em 9%. Dois doentes foram submetidos a toracoplastia. A mortalidade operatória foi de 5% (um doente). Em 36% dos doentes houve complicações no pós-operatório sendo as mais frequentes o pneumotórax (18%) e o empiema (18%). O follow-up médio foi de 52 meses (3 - 116) e a mortalidade aos cinco anos foi de 35%. Destes, quatro doentes faleceram por causas não relacionadas e três eram doentes imunodeprimidos. A mortalidade nos aspergilomas simples foi de 40% e 33% nos aspergilomas complexos. Discussão: A abordagem cirúrgica mais frequente foi a ressecção pulmonar atípica. A taxa de complicações foi sobreponível à da literatura. Conclusão: O tratamento cirúrgico do aspergiloma pulmonar apresenta uma baixa morbilidade e mortalidade pelo que permanece o

  18. Stability of the multiple star system ι UMa (ADS 7114)

    NASA Astrophysics Data System (ADS)

    Mel'nikov, A. V.; Orlov, V. V.; Shevchenko, I. I.

    2014-09-01

    The physical and orbital parameters of the quadruple star system ι UMa (HD 76644 = ADS 7114) were determined earlier, when it was concluded based on modeling the system's dynamics and applying theoretical stability criteria that the system was probably unstable. Here the stability of the ι UMa system is studied by calculating the Lyapunov characteristic exponents for representative sets of parameters and initial conditions. The conclusions on the system's stability (or instability) based on various stability criteria and the calculated Lyapunov exponents are compared. The instability of the system as a whole is confirmed rigorously based on massive computations of the Lyapunov exponents. This system appears to be the only known multiple system whose instability has been rigorously established. The Lyapunov time-disruption time statistical relations are constructed, which show that the Hamiltonian intermittency of the second kind dominates. Typical disruption times are shorter than 1000 years, and the Lyapunov times are shorter than 100 years.

  19. Evolutionary scenario for W UMa-type stars

    NASA Astrophysics Data System (ADS)

    Stepień, K.; Gazeas, K.

    2008-10-01

    An alternative to TRO model of a W UMa-type star is presented in which the binary is past mass exchange with mass ratio reversal. The secondary is hydrogen depleted and both components are in thermal equilibrium. Evolution in contact is driven by orbital angular momentum loss and mass transfer from the secondary to primary component, similarly as it is observed in Algols. Temperature equalization of both components results from an assumed energy transfer by a large scale flow encircling the whole system in the common envelope.

  20. STT Doubles with Large DM - Part II: Leo and UMa

    NASA Astrophysics Data System (ADS)

    Knapp, Wilfried; Nanson, John; Smith, Steven

    2016-02-01

    The results of visual double star observing sessions suggested a pattern for STT doubles with large DM being harder to resolve than would be expected based on the WDS catalog data. It was felt this might be a problem with expectations on one hand, and on the other might be an indication of a need for new precise measurements, so we decided to take a closer look at a selected sample of STT doubles and do some research. We found that also in Leo and Uma at least several of the selected objects show parameters quite different from the current WDS data.

  1. V4641 Sgr and KV UMa. Two black hole candidates

    NASA Astrophysics Data System (ADS)

    Chuprikov, A.; Guirin, I.

    We have analized the results of processing of the NRAO archive VLA and VLBA data for two star objects titled V4641 Sgr (J1819-2524) and KV UMa (X1118+4802). Some radio images of both sources for some frequency ranges are presented. Data have been processed with the software project titled 'Astro Space Locator' (ASL for Windows). The Multi Frequency Synthesis (MFS) method has been used for reconstruction of radio maps. Images of both sources are presented. Any polarization phenomena are not taken into account. We present results of processing of data of RR polarization for all the observational sessions.

  2. Cyclic Period Oscillation of the Eclipsing Dwarf Nova DV UMa

    NASA Astrophysics Data System (ADS)

    Han, Z.-T.; Qian, S.-B.; Irina, Voloshina; Zhu, L.-Y.

    2017-05-01

    DV UMa is an eclipsing dwarf nova with an orbital period of ˜2.06 hr, which lies just at the bottom edge of the period gap. To detect its orbital period changes, we present 12 new mid-eclipse times by using our CCD photometric data and archival data. The latest version of the O-C diagram, combined with the published mid-eclipse times in quiescence, and spanning ˜30 years, was obtained and analyzed. The best fit to those available eclipse timings shows that the orbital period of DV UMa is undergoing a cyclic oscillation with a period of 17.58(+/- 0.52) years and an amplitude of 71.1(+/- 6.7) s. The periodic variation most likely arises from the light-travel-time effect via the presence of a circumbinary object, because the required energy to drive the Applegate mechanism is too high in this system. The mass of the unseen companion was derived as {M}3\\sin i\\prime =0.025(+/- 0.004) {M}⊙ . If the third body is in the orbital plane (i.e., i\\prime =i=82\\buildrel{\\circ}\\over{.} 9) of the eclipsing pair, this would indicate it is a brown dwarf. This hypothetical brown dwarf is orbiting its host star at a separation of ˜8.6 au in an eccentric orbit (e = 0.44).

  3. Recent developments on SU UMa stars - theory vs. observation

    NASA Astrophysics Data System (ADS)

    Cannizzo, John K.

    2015-01-01

    Kepler light curves of short period dwarf novae have resparked interest in the nature of superoutbursts and led to the question: Is the thermal-tidal instability needed, or can the plain vanilla version of the accretion disk limit cycle do the job all by itself? A detailed time-resolved study of an eclipsing SU UMa system during superoutburst onset should settle the question - if there is a dramatic contraction of the disk at superoutburst onset, Osaki's thermal-tidal model would be preferred; if not, the plain disk instability model would be sufficient. I will present recent results that support the contention by Osaki & Kato that the time varying negative superhump frequencies can be taken as a surrogate for the outer disk radius variations. Finally, it may be necessaryto look beyond the short period dwarf novae to gain perspective on the nature of embedded precursors in long outbursts.

  4. The accretion process in AR UMa, an extremely magnetized polar

    NASA Astrophysics Data System (ADS)

    Scipione, Valentina

    2012-10-01

    We propose a triggered observation of the highest magnetized polar, AR UMa. Our target with a magnetic field of about 230 MG gives access to an unexplored parameter regime. It escaped XMM-Newton so far due to extended low states. Utilizing the broad spectral range covered by XMM-Newton including the OM, we will simultaneously determine the energy content of the three cooling channels of the post-shock accretion plasma: cyclotron radiation in the UV, plasma radiation in hard X-rays and re-processed radiation in soft X-rays. We will confront our observations with state-of-art models and study quantitatively the energy balance of the cooling plasma as a function of the accretion rate and the magnetic field strength.

  5. Origin and evolution of contact binaries of W UMa type

    NASA Astrophysics Data System (ADS)

    Rahunen, T.; Vilhu, O.

    Angular momentum loss estimates for single stars are employed to discuss three theories for contact binary evolution. Two of the theories of the metamorphoses of W UMa stars involve the fission of a rapidly rotating star at the end of the pre-main sequence contraction phase, resulting in a constant level of angular momentum and small mass ratios. The second sequence comprises an evolution of the companion from angular momentum loss from a detached or semidetached binary. Chromospheric Ca(+) emission observations are noted to correlate with rotational velocity predicted for the second type of evolution of angular momentum loss rate. The models display cyclic behavior on a time scale of one to ten million years, although the contact never breaks. It is concluded that the constant angular momentum models require a formation process which yield unequal components, while the detached, followed by contact, process is the most natural production mechanism.

  6. [Liver transplant at the UMAE 25 IMSS Monterrey].

    PubMed

    Cisneros-Garza, Laura E; López-Hernández, Pedro A; Muñoz-Ramírez, M del Rosario; Castilla-Valdéz, Martha Patricia; Sebastián-Ruiz, M José; Carmona-Martínez, Juan Gerardo; Alvarez-Treviño, Guillermo Alberto; Martínez-Flores, José Guillermo; Olavide-Aguilar, Ramón

    2011-09-01

    Liver transplantation is the best treatment for end stage liver diseases. In April 2003, our institution started a Liver Transplantation Program for both pediatric and adults population. Shown the results of the Liver Transplantation Program in the UMAE 25 Monterrey N.L. This is a retrospective cohort study of patients with liver transplantation. A total of 51 liver transplantations have been done in 49 patients with two retrasplantation, 15 in children and 36 in adults. The principal indication for liver transplantation in children was biliary atresia and hepatitis C cirrhosis in adults. The acute renal failure was the main early complication, the acute cellular rejection in the mediate period, and the cardiovascular diseases as late complication related to obesity, metabolic syndrome, diabetes mellitus and hypertension. Overall survival at 1 and 5 years was 57.1 and 54.2%, respectively. During the first three years post-transplantation, the quality of life was good or very good. Although still a young and perfectible program, the effort of a multidisciplinary team has made possible to perform liver transplantation in two patient populations, pediatric and adults.

  7. VizieR Online Data Catalog: Galaxies in the UMa cluster complex (Karachentsev+, 2013)

    NASA Astrophysics Data System (ADS)

    Karachentsev, I. D.; Nasonova, O. G.; Courtois, H. M.

    2015-04-01

    A nearby friable cloud in Ursa Majoris contains 270 galaxies with radial velocities 500UMa complex. According to Makarov & Karachentsev (2011MNRAS.412.2498M, Cat. J/MNRAS/412/2498), most of the UMa galaxies belong to seven bound groups, which have the following median parameters: velocity dispersion of 58k/s, harmonic projected radius of 300kpc, virial mass of 2x1012M⊙ and virial mass-to-K-band luminosity ratio of 27M⊙/L⊙. Almost a half of the UMa cloud population are gas-rich dwarfs (Ir, Im, BCD) with active star formation seen in the GALEX UV-survey. The UMa groups reside within 15-19Mpc from us, being just at the same distance as the Virgo cluster. The total virial mass of the UMa groups is 4x1013M⊙, yielding the average density of dark matter in the UMa cloud to be Ωm=0.08, i.e. a factor of 3 lower than the cosmic average. This is despite the fact that the UMa cloud resides in a region of the Universe that is an apparent overdensity. A possible explanation for this is that most mass in the Universe lies in the empty space between clusters. Herewith, the mean distances and velocities of the UMa groups follow nearly undisturbed Hubble flow without a sign of the 'Z-wave' effect caused by infall towards a massive attractor. This constrains the total amount of dark matter between the UMa groups within the cloud volume. (1 data file).

  8. New Light Curves and Period Studies of V502 OPH W UMA System

    NASA Astrophysics Data System (ADS)

    Awadalla, Nabil S.

    NEW LIGHT CURVES AND PERIOD STUDIES OF V502 OPH W UMa SYSTEM N.S.Awadalla National Research Institute of Astronomy and Geophysics( NRIAG ) Helwan Cairo EGYPT New BVR photoelectric observations of the W UMa eclipsing binary system V502 Oph have been presented and analyzed. The geometric and physical elements of the system have been obtained and compared to the previous results. The classification of the system concerning the sub-type of the W UMa binary has been studied as well as its evolution stage. Its period variation in a view of the light time effect has been examin

  9. Sequential ultrasound-microwave assisted acid extraction (UMAE) of pectin from pomelo peels.

    PubMed

    Liew, Shan Qin; Ngoh, Gek Cheng; Yusoff, Rozita; Teoh, Wen Hui

    2016-12-01

    This study aims to optimize sequential ultrasound-microwave assisted extraction (UMAE) on pomelo peel using citric acid. The effects of pH, sonication time, microwave power and irradiation time on the yield and the degree of esterification (DE) of pectin were investigated. Under optimized conditions of pH 1.80, 27.52min sonication followed by 6.40min microwave irradiation at 643.44W, the yield and the DE value of pectin obtained was respectively at 38.00% and 56.88%. Based upon optimized UMAE condition, the pectin from microwave-ultrasound assisted extraction (MUAE), ultrasound assisted extraction (UAE) and microwave assisted extraction (MAE) were studied. The yield of pectin adopting the UMAE was higher than all other techniques in the order of UMAE>MUAE>MAE>UAE. The pectin's galacturonic acid content obtained from combined extraction technique is higher than that obtained from sole extraction technique and the pectin gel produced from various techniques exhibited a pseudoplastic behaviour. The morphological structures of pectin extracted from MUAE and MAE closely resemble each other. The extracted pectin from UMAE with smaller and more regular surface differs greatly from that of UAE. This has substantiated the highest pectin yield of 36.33% from UMAE and further signified their compatibility and potentiality in pectin extraction. Copyright © 2016 Elsevier B.V. All rights reserved.

  10. A Dynamical Analysis of the 47 UMa Planetary System

    NASA Astrophysics Data System (ADS)

    Laughlin, G.; Chambers, J.; Fischer, D.

    2001-12-01

    Thirteen years of Doppler velocity measurements have revealed the presence of two planets orbiting the star 47 Ursa Majoris on low eccentricity orbits. A 2-Keplerian fit to the radial velocity data suggests that the inner planet has a period Pb = 1089.0 +/- 2.9 d, and a nominal mass msin i = 2.54 MJup, while the outer planet has a period Pc = 2594 +/- 90 d, and a mass m sin i = 0.76 MJup. These mass and period ratios suggest a possible kinship to the Jupiter-Saturn pair in our own solar system. We explore the current dynamical state of this system with numerical integrations, and compare the results with analytic secular theory. We find that the planets in the system are likely participating in a secular resonance in which the arguments of pericenter librate around zero. The system may also currently be in a 7:3 mean-motion resonance. Using a self-consistent fitting procedure in conjunction with numerical integrations, we show that stability considerations restrict the mutual inclination between the two planets to 40 degrees or less, and that this result is relatively insensitive to the total mass of the two planets. We present hydrodynamical simulations which measure the torques exerted on the planets by a hypothesized external protoplanetary disk. We show that planetary migration in response to torques from the disk may have led to capture of the system into a 7:3 mean-motion resonance, although it is unclear how the eccentricities of the planets would have been damped after capture occured. We show that Earth-mass planets can survive for long periods in some regions of the habitable zone of the nominal co-planar system. A set of planetary accretion calculations, however, shows that it is unlikely that large terrestrial planets can form in the 47UMa habitable zone. This work was funded by the NASA Origins Program, and by a NASA Ames Director's Discretionary Fund Award.

  11. Elemental Abundance Analyses with DAO Spectrograms. XXXIX. The Am Stars 2 UMa and 15 Vul

    NASA Astrophysics Data System (ADS)

    Çay, İpek H.; Teker Yelkenci, Aysegul; Adelman, Saul J.

    2016-05-01

    We derived the elemental abundances of the metallic-line stars 2 UMa (=HR 3354; spectral type A2m) and 15 Vul (=HR 7653; spectral type A4 III), using high-dispersion, high signal-to-noise ratio (≥200) optical region spectrograms obtained with CCD detectors at the long Coudé camera of the 1.22 m telescope of the Dominion Astrophysical Observatory (DAO) and Kurucz's ATLAS9 and WIDTH9 programs. The star 2 UMa has not been the subject of a modern detailed elemental abundances analysis. It is relatively sharp-lined and sufficiently hot (T eff = 8050 K) that the continuum placement is not a major problem in the optical region. Comparison of the results of this new study of 15 Vul with the last complete study shows a 0.15 dex mean increase in the derived abundances and a reduction in the standard deviations of the mean values. The abundance anomalies of 2 UMa are usually larger than those of 15 Vul. The greater spectral coverage of 15 Vul compared with 2 UMa results in a larger number of abundances being derived. The abundances of 2 UMa are typical for those of classical Am stars that have similar effective temperatures and surface gravities. 15 Vul, characterized by a similar effective temperature and smaller surface gravity, is a more evolved star.

  12. High-frequency variations of hydrogen spectral lines in the B3V star η UMa

    NASA Astrophysics Data System (ADS)

    Pokhvala, S. M.

    2015-09-01

    We reported the detection of high-frequency variations in the hydrogen Balmer lines in the hot star η UMa of spectral class B3V. Spectral observations of η UMa were carried out with slitless spectrograph (R˜100) installed on the 60 cm Carl Zeiss telescope in the Andrushivka Observatory. Spectra were obtained with a time resolution in the sub-second range. It has been found that the η UMa shows rapid variations in the hydrogen lines Hα, Hβ, Hγ, as well as variations in the atmospheric oxygen lines. The intensity variations in the hydrogen lines varies from 0.2% to 0.5% , and that of the oxygen lines is approximately 2%.

  13. FUSE Observations of the Bright, Eclipsing Nova-like Cataclysmic Variable, UX UMa (FUSE 2000)

    NASA Technical Reports Server (NTRS)

    Long, Knox; Froning, Cynthia

    2004-01-01

    This was a project to study the disk and wind of the eclipsing nova-like variable UX UMa, in order to better define the wind geometry of the system, including the nature of the transition region between the disk photosphere and the supersonic wind. We proposed to use phase resolved spectroscopy of the system, taking advantage of the fact that UX UMa is an eclipsing system, to isolate different regions of the wind and to use a Monte Carlo radiative transfer code to simulate the spectra through the eclipse.

  14. Anatomic pulmonary resection via video-assisted thoracic surgery: analysis of 117 cases at a referral center in Brazil.

    PubMed

    Soder, Stephan Adamour; Barth, Frederico; Perin, Fabiola Adelia; Felicetti, José Carlos; Camargo, José de Jesus Peixoto; Camargo, Spencer Marcantônio

    2017-01-01

    To describe our experience with video-assisted thoracic surgery (VATS) for anatomic pulmonary resection at a referral center for thoracic surgery in Brazil. All patients who underwent anatomic pulmonary resection by VATS between 2010 and 2015 were included. Clinical and pathological data, as well as postoperative complications, were analyzed. A total of 117 pulmonary resections by VATS were performed, of which 98 were lobectomies and 19 were anatomic segmentectomies. The mean age of the patients was 63.6 years (range, 15-86 years). Females predominated (n = 69; 59%). The mean time to chest tube removal was 2.47 days, and the mean length of ICU stay was 1.88 days. The mean length of hospital stay was 4.48 days. Bleeding ≥ 400 mL occurred in 15 patients. Conversion to thoracotomy was required in 4 patients. Our results are similar to those published in major international studies, indicating that VATS is an important strategy for pulmonary resection. They also show that VATS can be safely performed with adequate training. This technique should be used more often for the treatment of lung diseases in Brazil. Relatar a experiência com cirurgia torácica videoassistida (CTVA) para ressecções pulmonares anatômicas em um centro nacional de referência de cirurgia torácica no Brasil. Foram incluídos todos os pacientes tratados com ressecções pulmonares anatômicas por CTVA entre 2010 e 2015 e analisados dados clínicos e patológicos, assim como complicações pós-operatórias. Foram realizadas 117 ressecções pulmonares por CTVA, sendo 98 lobectomias e 19 segmentectomias anatômicas. A média de idade foi de 63,6 anos (variação, 15-86 anos), sendo a maioria mulheres (n = 69; 59%). A média de tempo de permanência com dreno foi de 2,47 dias e a de estada em UTI foi de 1,88 dias. A média de tempo de internação foi de 4,48 dias. Sangramento ≥ 400 ml ocorreu em 15 pacientes. Houve conversão para toracotomia em 4 pacientes. Nossos resultados vão ao

  15. MN Dra - a SU UMa-type star during its September 2013 superoutburst

    NASA Astrophysics Data System (ADS)

    Bąkowska, Karolina; Olech, Arkadiusz; Pospieszyński, Remigiusz

    2016-06-01

    We report CCD photometry of the cataclysmic variable star MN Draconis. During the season of August-September 2013, one normal outburst and one superoutburst were detected. In the light curves of MN Dra clear superhumps were present during September 2013 superoutburst. That fact confirms that the star is a member of SU UMa class.

  16. Genome Sequences of Gordonia Bacteriophages Obliviate, UmaThurman, and Guacamole

    PubMed Central

    Akbar, Armaan F.; Ayers, Taylor N.; Belohoubek, Selena G.; Chung, Connie F.; Hartman, Allison C.; Kayiti, Tejus; Kessler, Cecilia M.; Koman, Philipp I.; Kotovskiy, Grigoriy A.; Morgan, Taylor M.; Rohac, Rebecca M.; Silva, Gabriela M.; Willis, Charles E.; Milliken, Katherine A.; Shedlock, Kathleen A.; Stanton, Ann-Catherine J.; Toner, Chelsea L.; Furbee, Emily C.; Grubb, Sarah R.; Warner, Marcie H.; Montgomery, Matthew T.; Garlena, Rebecca A.; Russell, Daniel A.; Jacobs-Sera, Deborah; Hatfull, Graham F.

    2016-01-01

    We describe three newly isolated phages—Obliviate, UmaThurman, and Guacamole—that infect Gordonia terrae 3612. The three genomes are related to one another but are not closely related to other previously sequenced phages or prophages. The three phages are predicted to use integration-dependent immunity systems as described in several mycobacteriophages. PMID:27365348

  17. [Congenital Heart Disease in Children with Down Syndrome: What Has Changed in the Last Three Decades?

    PubMed

    Dias, Filipa Mestre; Cordeiro, Susana; Menezes, Isabel; Nogueira, Graça; Teixeira, Ana; Marques, Marta; Abecasis, Miguel; Anjos, Rui

    2016-10-01

    Introdução: A prevalência da síndrome de Down tem aumentado nos últimos 30 anos; 55% destas crianças apresentam cardiopatia congénita. Material e Métodos: Estudo retrospetivo longitudinal de coorte; dados clínicos obtidos em bases de dados de 1982 a 2013 com o diagnóstico de síndrome de Down ou trissomia 21 num hospital de referência em cardiologia pediátrica e cirurgia cardíaca. Objetivo: Avaliar a evolução, nas últimas três décadas, dos cuidados cardiológicos prestados às crianças com síndrome de Down ecardiopatia congénita.Resultados: Estudámos 102 doentes com síndrome de Down e cardiopatia congénita submetidos a terapêutica invasiva: cirurgiacardíaca corretiva, paliativa e cateterismo terapêutico. Em doentes referenciados no primeiro ano de vida, a referenciação foi cada vez mais precoce. O diagnóstico mais frequente foi o defeito completo do septo aurículo-ventricular (41%). Verificou-se uma tendência para cirurgia corretiva cada vez mais precoce em doentes abaixo dos 12 meses (p < 0,001). A partir de 2000, a grande maioria dos doentes foi operada antes dos seis meses de idade. As principais complicações cardíacas foram alterações de ritmo e baixo débito e as principais não cardíacas foram pulmonares e infeciosas. A taxa de mortalidade a 30 dias foi de 3/102 casos (2,9%). Dos doentes em follow-up, 89% estão em classe funcional I da NYHA. Discussão e Conclusão: A correção cirúrgica mais precoce verificada nos últimos 15 anos vai ao encontro do proposto na literatura. A taxa de mortalidade a 30 dias verificada é sobreponível aos resultados internacionais. Os doentes com síndrome de Down submetidos a cirurgia corretiva de cardiopatia congénita apresentam uma excelente capacidade funcional a longo prazo.

  18. [Pulmonary carcinoid: analysis of a single institutional experience and prognostic factors].

    PubMed

    Correia, Silvia da Silva; Pinto, Carlos; Bernardo, João

    2014-01-01

    IntroduçÉo: Os tumores carcinóides pulmonares sÉo tumores raros com origem nas células neuro-endócrinas do pulmÉo. Classificam-se de acordo com os critérios da OMS em carcinóides típicos ou atípicos. Quando comparados com outros tipos de neoplasia pulmonar, os tumores carcinóides apresentam melhor prognóstico.Objetivos: CaracterizaçÉo dos doentes com diagnóstico histológico de tumor carcinóide observados numa instituiçÉo. Análise dos fatores que influenciaram o prognóstico.Material e Métodos: Análise retrospetiva incluindo todos os doentes com diagnóstico histológico de tumor carcinóide pulmonar durante um período de 11 anos numa instituiçÉo. Os tumores foram classificados em típicos e atípicos de acordo com a classificaçÉo da OrganizaçÉo Mundial de Saúde de 2004. O estadiamento foi feito com base na classificaçÉo TNM de 2009 para o carcinoma do pulmÉo de nÉo pequenas células: T (Tumor); N (Ganglionar); M (Metástase).Resultados: Foram incluídos 59 doentes: 53 carcinóides típicos e seis carcinóides atípicos. Destes, 90% foram submetidos a cirurgia. O follow-up médio foi de 57 meses. A mortalidade operatória foi de 2% (n = 1) tratando-se de cirurgia paliativa para um doente em estádio IV. Em 49 doentes nÉo se verificou envolvimento ganglionar (N0), um doente apresentava doença N1, oito doença N2 e um doente doença N3. A sobrevivência global aos cinco anos foi de 79,2%: 80,2% nos carcinóides típicos e 66,7% nos carcinóides atípicos (p < 0,05). Nos doentes T1, a sobrevivência foi de 88,1% e de 58,2% nos T2-T4 (p < 0,01). Nos doentes N0 a sobrevivência aos cinco anos de 89,7% e de 36% para os doentes N1-N3 (p < 0,001). Os doentes com doença M0 apresentaram uma sobrevivência aos cinco anos de 85,9% sendo de 0% nos doentes M1 (p < 0,01). Dos 11 doentes que necessitaram de quimioterapia adjuvante, 45,4% eram carcinóides atípicos.DiscussÉo: Na nossa série, a cirurgia no tumor carcinóide pulmonar demonstrou

  19. Absolute and geometric parameters of the W UMa type contact binary V546 And

    NASA Astrophysics Data System (ADS)

    Gürol, Birol; Bradstreet, David H.; Okan, Abdullah

    2015-04-01

    We present the results of our investigation on the geometrical and physical parameters of the W UMa-type binary V546 And from analyzed CCD (BVRI) light curves and radial velocity data. The photometric data were obtained in 2010 and 2011 at Ankara University Observatory (AUO) and the spectroscopic observations were made in 2010 at TUBITAK National Observatory (TUG). Light and radial velocity observations were analyzed simultaneously by using the Wilson-Devinney (2013 revision) code to obtain absolute and geometrical parameters. The system was determined to be a W-type W UMa system. Combining our photometric solution with the spectroscopic data we derived masses and radii of the eclipsing system to be M1 = 0.275M⊙,M2 = 1.083M⊙,R1 = 0.661R⊙ and R2 = 1.229R⊙ . We finally discuss the evolutionary status of the system.

  20. LX Leo: A High Mass-Ratio Totally Eclipsing W-type W UMa System

    NASA Astrophysics Data System (ADS)

    Gürol, B.; Michel, R.; Gonzalez, C.

    2017-10-01

    We present the results of our investigation of the geometrical and physical parameters of the binary system LX Leo. Based on CCD BVRc light curves, and their analyses with the Wilson-Devinney code, new times of minima and light elements have been determined. According to our solution, the system is a high mass-ratio, totally eclipsing, W-type W UMa system. Combining our photometric solution with the empirical relation for W UMa type systems by Dimitrow & Kjurkchieva (2015), we derived the masses and radii of the components to be M1=0.43 Mȯ, M2=0.81 Mȯ, R1=0.58 Rȯ and R2=0.77 Rȯ. In addition, the evolutionary condition of the system is discussed.

  1. Spectral and photometric behavior of SU UMa during quiescence and outburst states

    NASA Astrophysics Data System (ADS)

    Zead, I.; Saad, S. M.; Sanad, M. R.; Behary, M. M.; Gadallah, K.

    2017-04-01

    We report the results of spectral and photometric observations of SU UMa. Available spectra from International Ultraviolet Explorer (IUE) and CCD photometry of five nights were used. Some profiles revealing the variations of some spectral lines at different times are presented. There is variation with time for photometric observations and the brightness of SU UMa is changed from 12.9 mag. to 15.6 mag in 5 nights with clear display of burst. The ultraviolet luminosity for emitting region is in the range of (6.9*1030 erg s-1). The mass accretion rate is in the range of (9.8*10-13 M⊙yr-1). The line flux modulations at different times can be explained in terms of the mass transfer instability model (Bath 1973).

  2. About DR UMa or the CRTS transient CSS110402:135906+554432

    NASA Astrophysics Data System (ADS)

    Lampens, Patricia,; Van Cauteren, Paul

    2017-03-01

    We report differential photometric measurements, both unfiltered (filter clear, C) and filtered (filter V), obtained at the Humain station of the Royal Observatory of Belgium (longitude = 5.254, latitude = +50.192, elevation = 280 m) of the CRTS transient CSS110402:135906+554432 (Drake et al. 2009, ApJ 696, 870), which is also identified as DR UMa. The instrumentation is a 16-inch Schmidt-Cassegrain telescope equipped with a Moravian G2-3200 CCD camera.

  3. Increasing Supercycle Lengths of Active SU UMa-type Dwarf Novae

    NASA Astrophysics Data System (ADS)

    Otulakowska-Hypka, M.; Olech, A.

    2014-12-01

    We present observational evidence that supercycle lengths of the most active SU UMa-type stars are increasing during the past decades. We analyzed a large number of photometric measurements from available archives and found that this effect is generic for this class of stars, independently of their evolutionary status. This finding is in agreement with previous predictions and the most recent work of Patterson et al. (2012) on BK Lyn.

  4. A cool stellar companion to the δ Scuti variable star GW UMa

    NASA Astrophysics Data System (ADS)

    Wang, S.-M.; Qian, S.-B.; Li, L.-J.; Zhu, L.-Y.; Zhao, E.-G.; Zhou, X.

    2015-01-01

    GW UMa is a new high-amplitude δ Scuti variable star with a period of 0d.20319367. By using a few new determined times of light maximum together with those collected from the literature, the changes in Observed-Calculated (O-C) diagram were analyzed. It is discovered that the O-C curve of GW UMa shows a cyclic variation with a period of 13.2 years and a semi-amplitude of 0.0023 days. The periodic variation was analyzed for the light-travel time effect that may be due to the presence of a stellar companion. The mass of the stellar companion is determined to be M2 sin i=0.11(±0.01)M⊙ when a mass of 1.76 M⊙ for GW UMa is adopted. The two component stars in the binary system are orbiting each other at an orbital separation about 6.5(±0.8) AU. For orbital inclinations i⩾22.6°, the mass of the companion star would be M2<0.3M⊙ and it is a fully convective star. The detection suggests that hidden stellar companions to bright stars may be not unusual.

  5. Curious Variables Experiment (CURVE). Superhump Period Change Pattern in KS UMa and Other Dwarf Novae

    NASA Astrophysics Data System (ADS)

    Olech, A.; Schwarzenberg-Czerny, A.; Kedzierski, P.; Zloczewski, K.; Mularczyk, K.; Wisniewski, M.

    2003-06-01

    We report extensive photometry of the dwarf nova KS UMa throughout its 2003 superoutburst till quiescence. During the superoutburst the star displayed clear superhumps with a mean period of P_sh=0.070092(23) days. In the middle stage of superoutburst the period was increasing with a rate of dot P/P=(21+/-12)*10^-5 and later was decreasing with a rate of dot P/P=-(21+/-8)*10^-5. At the end of superoutburst and during first dozen days of quiescence the star was showing late superhumps with a mean period of P_late=0.06926(2) days. This phenomenon was observed even 30 days after beginning of the superoutburst. In quiescence the star shows quasi-periodic modulations with amplitude reaching 0.5 mag. The most common structure observed during this stage was sinusoidal wave characterized by a period of about 0.1 days. Comparing KS UMa to other SU UMa stars we conclude that this group of dwarf novae shows decreasing superhump periods at the beginning and the end of superoutburst but increasing period in the middle phase.

  6. UBVRI analysis of the totally eclipsing extreme mass ratio W UMa binary, GSC 3208 1986

    SciTech Connect

    Samec, R. G.; Kring, J. D.; Robb, Russell; Van Hamme, W.; Faulkner, D. R.

    2015-03-01

    GSC 3208 1986 is an NSVS and TYCHO binary, first observed from 1999 to 2000. It is a W UMa binary with a period of 0.405 days. The present observations were taken in 2012 September and are of high precision, averaging a standard deviation of better than 5 mmag. The amplitude of the light curve is very nearly 0.5 mag yet it undergoes total eclipses. Dominion Astrophysical Observatory spectra give an F3V type (T∼6900 K) for the system, the earliest of the extreme mass ratio W UMa binaries. The linear period determination of 0.4045672 days was calculated with the two sets of epochs available. An early NSVS light curve reveals that the period has been smoothly decreasing over its past 12,000 orbits. The binary may be undergoing sinusoidal oscillations due to the presence of a third body, possibly with a period of 23±3 years. The high inclination of 85° results in a long duration secondary total eclipse, lasting some 49.5 minutes. Findings indicate that GSC 3208 1986 is an immaculate extreme mass ratio, q(m{sub 2}/m{sub 1}) = 0.24, A-type W UMa binary.

  7. Optimization and comparison of ultrasound/microwave assisted extraction (UMAE) and ultrasonic assisted extraction (UAE) of lycopene from tomatoes.

    PubMed

    Lianfu, Zhang; Zelong, Liu

    2008-07-01

    The extracting technology including ultrasonic and microwave assisted extraction (UMAE) and ultrasonic assisted extraction (UAE) of lycopene from tomato paste were optimized and compared. The results showed that the optimal conditions for UMAE were 98 W microwave power together with 40 KHz ultrasonic processing, the ratio of solvents to tomato paste was 10.6:1 (V/W) and the extracting time should be 367 s; as for UAE, the extracting temperature was 86.4 degrees C, the ratio of the solvents to tomato paste was 8.0:1 (V/W) and the extracting time should be 29.1 min, while the percentage of lycopene yield was 97.4% and 89.4% for UMAE and UAE, respectively. These results implied that UMAE was far more efficient extracting method than UAE.

  8. Kīlauea summit eruption—Lava returns to Halemaʻumaʻu

    USGS Publications Warehouse

    Babb, Janet L.; Wessells, Stephen M.; Neal, Christina A.

    2017-10-06

    In March 2008, a new volcanic vent opened within Halemaʻumaʻu, a crater at the summit of Kīlauea Volcano in Hawaiʻi Volcanoes National Park on the Island of Hawaiʻi. This new vent is one of two ongoing eruptions on the volcano. The other is on Kīlauea’s East Rift Zone, where vents have been erupting nearly nonstop since 1983. The duration of these simultaneous summit and rift zone eruptions on Kīlauea is unmatched in at least 200 years.Since 2008, Kīlauea’s summit eruption has consisted of continuous degassing, occasional explosive events, and an active, circulating lava lake. Because of ongoing volcanic hazards associated with the summit vent, including the emission of high levels of sulfur dioxide gas and fragments of hot lava and rock explosively hurled onto the crater rim, the area around Halemaʻumaʻu remains closed to the public as of 2017.Through historical photos of past Halemaʻumaʻu eruptions and stunning 4K imagery of the current eruption, this 24-minute program tells the story of Kīlauea Volcano’s summit lava lake—now one of the two largest lava lakes in the world. It begins with a Hawaiian chant that expresses traditional observations of a bubbling lava lake and reflects the connections between science and culture that continue on Kīlauea today.The video briefly recounts the eruptive history of Halemaʻumaʻu and describes the formation and continued growth of the current summit vent and lava lake. It features USGS Hawaiian Volcano Observatory scientists sharing their insights on the summit eruption—how they monitor the lava lake, how and why the lake level rises and falls, why explosive events occur, the connection between Kīlauea’s ongoing summit and East Rift Zone eruptions, and the impacts of the summit eruption on the Island of Hawaiʻi and beyond. The video is also available at the following U.S. Geological Survey Multimedia Gallery link (video hosted on YouTube): Kīlauea summit eruption—Lava returns to Halemaʻumaʻu

  9. Cosmoeducação: uma proposta para o ensino de astronomia

    NASA Astrophysics Data System (ADS)

    Medeiros, L. A. L.; Jafelice, L. C.

    2003-08-01

    Entende-se por cosmoeducação o desenvolvimento vivencial da unidade homem-cosmo. Este conceito é norteado pela psicologia transpessoal, que estuda o ser humano em sua totalidade, onde suas relações ecológicas e cósmicas são de grande importância. Constata-se uma necessidade latente no ser humano moderno em resgatar uma relação holística com o Universo. Neste trabalho exploramos meios de cultivar a consciência de que o ser humano constitui parte integrante do cosmo e se relaciona com este com o objetivo de promover em si uma percepção ambiental mais ampla. Nossa hipótese de trabalho inicial foi que o ensino de conteúdos básicos em astronomia realizado através de uma abordagem holística, que incorpore práticas vivenciais correlacionadas àqueles conteúdos, pode despertar no indivíduo sua identidade cósmica. O método que utilizamos é o fenomenológico e o universo desta pesquisa é um grupo de estudantes da disciplina de Astronomia (Curso de Licenciatura em Geografia/UFRN), onde realizamos observação participante, entrevistas, depoimentos e as práticas vivenciais mencionadas. Neste caso estamos desenvolvendo e adaptando exercícios de algumas técnicas terapêuticas de psicologia transpessoal, que um de nós (LALM) tem aplicado no contexto clínico, para trabalhar aspectos cognitivos envolvidos naquele processo de conscientização cósmica. Resultados parciais claramente referendam a hipótese inicial. Um resultado a destacar é fruto de uma dinâmica de representação corporal interiorizada do eclipse lunar, envolvendo um pequeno grupo daqueles estudantes, na qual conteúdos míticos afloraram de maneira espontânea e contundente para todos, sugerindo ressonância, ou pelo menos isomorfismo, entre o macro e o microcosmo. Este e outros resultados são discutidos em detalhe neste trabalho. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP).

  10. BO Canum Venaticorum and SS Comae Berenices: A Photometric Study of AW UMa-Type Binaries

    NASA Astrophysics Data System (ADS)

    Qian, S.-B.; Zhu, L.-Y.

    2006-02-01

    BO CVn and SS Com are two short-period W UMa-type binary stars with spectral types earlier than F5. In the present paper new CCD photometric light curves in B, V, and R bands of BO CVn and the first complete light curve in V band of SS Com are presented. The light curves of the two binaries are symmetric, and no variations of the light curves were found for both systems that are quite unlike those of cooler overcontact binaries. These observational properties may suggest weak photospheric dark spot activity in the two systems during the observational time intervals. Photometric solutions of the two W UMa-type binaries were derived by using the 2003 version of the Wilson-Devinney (W-D) method. The new solutions suggest that they are overcontact binary stars with degrees of overcontact of f=40.6% for BO CVn and f=49.6% for SS Com. Our new times of light minimum confirmed the long-time period increases of the two systems, and the rates of continuous period increase were revised. The long-time period increases, the orbital periods, the degrees of overcontact, and the mass ratios all suggest that they are on an evolutionary stage of mass transfer from the less massive component to the more massive one, and SS Com will reach the present evolutionary state of BO CVn. The slow evolution toward extreme mass ratio will cause them finally to coalesce to single stars. Therefore, both of them are AW UMa-type near-coalescent overcontact binary systems.

  11. The first photometric study of W UMa eclipsing binary OQ Dra

    NASA Astrophysics Data System (ADS)

    Heidarnia, R.; Ebadi, H.; Rooydargard, H.

    2016-11-01

    The present study is an analysis of V-band CCD observations of new W UMa contact binary OQ Dra. To carry out the analysis, Primary and secondary minimum were obtained and new epoch was calculated. The computed period of system was 0.33967 day. Light curve analysis was performed using Binary Maker 3 and PHOEBE that uses the latest Wilson-Devinney code. We obtained photometric mass ratio of qptm = 0.55. O'Connell effect also was seen in the fitted model. Finally, the best model was achieved by introducing 2 spots on each component.

  12. NY Serpentis: SU UMa-type nova in the period gap with diversity of normal outbursts

    NASA Astrophysics Data System (ADS)

    Pavlenko, Elena P.; Kato, Taichi; Antonyuk, Oksana I.; Ohshima, Tomohito; Hambsch, Franz-Josef; Antonyuk, Kirill A.; Sosnovskij, Aleksei A.; Baklanov, Alex V.; Shugarov, Sergey Yu.; Pit, Nikolaj V.; Nakata, Chikako; Masi, Gianluca; Nakajima, Kazuhiro; Maehara, Hiroyuki; Dubovsky, Pavol A.; Kudzej, Igor; Andreev, Maksim V.; Kuznyetsova, Yuliana G.; Vasiliskov, Kirill A.

    2014-12-01

    We present a photometric study of NY Ser, an in-the-gap SU UMa-type nova, in 2002 and 2013. We determined the duration of its superoutburst and the mean period of its superhump are 18 d and 0.10458 d, respectively. We detected in 2013 that NY Ser showed two distinct states separated by a superoutburst. A state of rather infrequent normal outbursts lasted at least 44 d before the superoutburst, and a state of frequent outbursts started immediately after the superoutburst and lasted at least 34 d. Unlike a typical SU UMa star with a bimodal distribution of outburst duration, NY Ser displayed a diversity of normal outbursts. In the state of infrequent outbursts, we detected a wide ˜ 12 d outburst accompanied by 0.098 d orbital modulation but without superhumps ever established in NY Ser. We classified this as a "wide normal outburst." The orbital period was dominant both in quiescence and during normal outbursts in this state. In the state of the most frequent normal outbursts, the 0.10465 d positive superhump period was dominant and coexisted with the orbital modulation. In 2002 we detected the normal outburst of "intermediate" 5-6 d duration that was also accompanied by orbital modulations.

  13. LONG-TERM PHOTOMETRIC ANALYSIS OF THE ACTIVE W UMa-TYPE SYSTEM TU BOOTIS

    SciTech Connect

    Coughlin, Jeffrey L.; Dale, Horace A. III; Williamon, Richard M.

    2008-09-15

    We present multicolor light curves for the W UMa-type eclipsing binary TU Boo for two epochs separated by 22 years. An analysis of the O - C diagram indicates the earlier observations took place right in the middle of a major period change, thus allowing for a unique study on mass transfer and period changes in this W UMa-type system. We compute model fits to our light curves, along with the only other published set, using the Wilson-Devinney program, and find temporally correlated changes in the size of the secondary component with anomalies in the O - C diagram. We investigate the cause of these changes and find support for the existence of rapid, large-scale mass transfer between the components. We postulate that this interaction allows them to maintain nearly equal surface temperatures despite having achieved only marginal contact. We also find support for the evolutionary scenario in which TU Boo has undergone a mass ratio reversal in the past, due to large-scale mass transfer so that what is presently the secondary component of TU Boo is in an advanced evolutionary state, oversized due to a helium-enriched core, with a total system age of {>=}10 Gyr.

  14. PhenUMA: a tool for integrating the biomedical relationships among genes and diseases.

    PubMed

    Rodríguez-López, Rocío; Reyes-Palomares, Armando; Sánchez-Jiménez, Francisca; Medina, Miguel Ángel

    2014-11-25

    Several types of genetic interactions in humans can be directly or indirectly associated with the causal effects of mutations. These interactions are usually based on their co-associations to biological processes, coexistence in cellular locations, coexpression in cell lines, physical interactions and so on. In addition, pathological processes can present similar phenotypes that have mutations either in the same genomic location or in different genomic regions. Therefore, integrative resources for all of these complex interactions can help us prioritize the relationships between genes and diseases that are most deserving to be studied by researchers and physicians. PhenUMA is a web application that displays biological networks using information from biomedical and biomolecular data repositories. One of its most innovative features is to combine the benefits of semantic similarity methods with the information taken from databases of genetic diseases and biological interactions. More specifically, this tool is useful in studying novel pathological relationships between functionally related genes, merging diseases into clusters that share specific phenotypes or finding diseases related to reported phenotypes. This framework builds, analyzes and visualizes networks based on both functional and phenotypic relationships. The integration of this information helps in the discovery of alternative pathological roles of genes, biological functions and diseases. PhenUMA represents an advancement toward the use of new technologies for genomics and personalized medicine.

  15. BVR photometric study of NSVS 2607629. A high mass-ratio W-type W UMa system

    NASA Astrophysics Data System (ADS)

    Gürol, Birol; Michel, Raul

    2017-02-01

    We present the results of our investigation of the geometrical and physical parameters of the W UMa-type binary system NSVS 2607629 based on CCD BVRc light curves and their analysis with the Wilson-Devinney code. New times of minima and light elements have been determined. We find that, as seen in eccentric systems, secondary minima do not occur at phase 0.5. According to our solution, the system is found to be a high mass-ratio W-type W UMa system. Combining our photometric solution with the emprical relation obtained for W UMa type systems by Dimitrov and Kjurkchieva (2015) we derive the masses and radii of the components of this eclipsing system as M1 = 0.44M⊙ , M2 = 0.73M⊙ , R1 = 0.57R⊙ and R2 = 0.71R⊙ . The evolutionary state of the system is also discussed.

  16. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IV. The Fourth Year (2011-2012)

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Hambsch, Franz-Josef; Maehara, Hiroyuki; Masi, Gianluca; Miller, Ian; Noguchi, Ryo; Akasaka, Chihiro; Aoki, Tomoya; Kobayashi, Hiroshi; Matsumoto, Katsura; Nakagawa, Shinichi; Nakazato, Takuma; Nomoto, Takashi; Ogura, Kazuyuki; Ono, Rikako; Taniuchi, Keisuke; Stein, William; Henden, Arne; de Miguel, Enrique Kiyota, Seiichiro; Dubovsky, Pavol A.; Kudzej, Igor; Imamura, Kazuyoshi; Akazawa, Hidehiko; Takagi, Ryosuke; Wakabayashi, Yuya; Ogi, Minako; Tanabe, Kenji; Ulowetz, Joseph; Morelle, Etienne; Pickard, Roger D.; Ohshima, Tomohito; Kasai, Kiyoshi; Pavlenko, Elena P.; Antonyuk, Oksana I.; Baklanov, Aleksei V.; Antonyuk, Kirill; Samsonov, Denis; Pit, Nikolaj; Sosnovskij, Aleksei; Littlefield, Colin; Sabo, Richard; Ruiz, Javier; Krajci, Thomas; Dvorak, Shawn; Oksanen, Arto; Hirosawa, Kenji; Goff, William N.; Monard, Berto; Shears, Jeremy; Boyd, David; Voloshina, Irina B.; Shugarov, Sergey Yu.; Chochol, Drahomir; Miyashita, Atsushi; Pietz, Jochen; Katysheva, Natalia; Itoh, Hiroshi; Bolt, Greg; Andreev, Maksim V.; Parakhin, Nikolai; Malanushenko, Viktor; Martinelli, Fabio; Denisenko, Denis; Stockdale, Chris; Starr, Peter; Simonsen, Mike; Tristram, Paul J.; Fukui, Akihiko; Tordai, Tamas; Fidrich, Robert; Paxson, Kevin B.; Itagaki, Koh-ichi; Nakashima, Youichirou; Yoshida, Seiichi; Nishimura, Hideo; Kryachko, Timur V.; Samokhvalov, Andrey V.; Korotkiy, Stanislav A.; Satovski, Boris L.; Stubbings, Rod; Poyner, Gary; Muyllaert, Eddy; Gerke, Vladimir; MacDonald, Walter, II; Linnolt, Michael; Maeda, Yutaka; Hautecler, Hubert

    2013-02-01

    Continuing the project described by Kato et al. (2009, PASJ, 61, S395), we collected times of superhump maxima for 86 SU UMa-type dwarf novae, mainly observed during the 2011-2012 season. We confirmed general trends recorded in our previous studies, such as the relation between period derivatives and orbital periods. There are some systems showing positive period derivatives despite the long orbital period. We observed the 2011 outburst of the WZ Sge-type dwarf nova BW Scl, and recorded an O - C diagram similar to those of previously known WZ Sge-type dwarf novae. The WZ Sge-type dwarf nova OT J184228.1+483742 showed an unusual pattern of double outbursts composed of an outburst with early superhumps and one with ordinary superhumps. We propose an interpretation that a very small growth rate of the 3:1 resonance due to an extremely low mass-ratio led to quenching the superoutburst before the ordinary superhump appeared. We systematically studied ER UMa-type dwarf novae, and found that V1159 Ori showed positive superhumps similar to ER UMa in the 1990s. The recently recognized ER UMa-type object BK Lyn dominantly showed negative superhumps, and its behavior was very similar to the present-day state of ER UMa. The pattern of period variations in AM CVn-type objects was very similar to that of short-period hydrogen-rich SU UMa-type dwarf novae, making them a helium analogue of hydrogen-rich SU UMa-type dwarf novae. SBS 1108+574, a peculiar hydrogen-rich dwarf nova below the period minimum, showed a very similar pattern of period variations to those of short-period SU UMa-type dwarf novae. The mass-ratio derived from the detected orbital period suggests that this secondary is a somewhat evolved star whose hydrogen envelope was mostly stripped during the mass-exchange. CC Scl, MASTER OT J072948.66+593824.4, and OT J173516.9+154708 showed only low-amplitude superhumps with complex profiles. These superhumps are likely to be a combination of two closely separated periods.

  17. SU UMa dwarf novae in the period gap showing the negative superhumps

    NASA Astrophysics Data System (ADS)

    Pavlenko, Elena

    2016-07-01

    There are only two known up to date SU UMa dwarf novae in the period gap showing the negative superhumps, namely, MN Dra and 1RXS J003828.7+250920. We present the results of X-ray and spectral investigation for 1RXS J003828.7+250920, multicolor optical investigation for 1RXS J003828.7+250920 and MN Dra at different stages of their activity in 2011-2016 years. We discuss a finding of the accretion disc radius for both dwarf novae, its variation during separated intervals between outbursts for MN Dra as well as high and low temperature regions in quiescent accretion disk for 1RXS J003828.7+250920.

  18. Sonification of Kepler Field SU UMa Cataclysmic Variable Stars V344 Lyr and V1504 Cyg

    NASA Technical Reports Server (NTRS)

    Tutchton, Roxanne M.; Wood, Matt A.; Still, Martin D.; Howell, Steve B.; Cannizzo, John K.; Smale, Alan P.

    2012-01-01

    Sonification is the conversion of quantitative data into sound. In this work we explain the methods used in the sonification of light curves provided by the Kepler instrument from Q2 through Q6 for the cataclysmic variable systems V344 Lyr and V1504 Cyg . Both systems are SU UMa stars showing dwarf nova outbursts and superoutbursts as well as positive and negative superhumps. Focused sonifications were done from average pulse shapes of each superhump, and separate sonifications of the full, residual light curves were done for both stars. The audio of these data reflected distinct patterns within the evolutions of supercycles and superhumps that matched pervious observations and proved to be effective aids in data analysis.

  19. Orbital Period Investigations of Two W UMa-type Binaries: AH Aur and V728 Her

    NASA Astrophysics Data System (ADS)

    Yu, Yun-Xia; Xiang, Fu-Yuan; Hu, Ke

    2016-04-01

    The orbital period changes of two W UMa-type binaries, AH Aur and V728 Her, are investigated based on all available times of the light minimum taken from the databases and literature. It is revealed that the orbital period of AH Aur shows a long-term decrease at a rate of {dP}/{dt}=-2.491× {10}-7 days yr-1. For V728 Her, we find that the orbital period exhibits a secular increase at a rate of {dP}/{dt}=3.793× {10}-7 days yr-1. The secular period changes suggest that AH Aur and V728 Her are undergoing rapid mass transfer between the primary star and the secondary companion.

  20. Mapping of surface activity on the W UMa-type system VW Cephei

    NASA Technical Reports Server (NTRS)

    Bradstreet, David H.; Guinan, Edward F.

    1988-01-01

    After multifilter photometry of the W UMa-type contact binary VW Cep (P = 6.67 hr; G5V + K0V) in 1986/87 revealed large asymmetries in the light curves believed to be caused by large, cool starspot regions on the surface of the larger stars, in Apr. 1987 it was observed with IUE to study the chromospheres and transition regions of the components. During one complete orbital cycle, three SWP and four LWP low dispersion spectra were obtained, including and then excluding the suspected active region. Phase dependent TR line emission strengths were found, most notably C IV, which is 50 percent stronger when the spot region is most visible. The results could be important because VW Cep represents an extreme case for studying stellar dynamo theory and observations can play a crucial role in the unterstanding of magnetic fields and activity cycles in rapidly rotating solar-like stars.

  1. VizieR Online Data Catalog: Search for UMa group companions (Ammler-von Eiff+, 2016)

    NASA Astrophysics Data System (ADS)

    Ammler-von Eiff, M.; Bedalov, A.; Kranhold, C.; Mugrauer, M.; Schmidt, T. O. B.; Neuhaeuser, R.; Errmann, R.

    2016-03-01

    The astrometric and photometric data of companion candidates of members of the Ursa Major (UMa) group are presented. They were identified by coronagraphic observations obtained with the S27 camera of NACO at the ESO VLT, Chile, in 2003-2006. Most of the candidates were observed a second time to assess whether they share the proper motion of the star. For this purpose, the change in position with respect to the star was compared to the stellar parallactic and proper motion known from Hipparcos. This way, all candidates with two epochs of observations were rejected being distant background objects. The layout of the included table deviates from the article version to facilitate automatic reading, i.e. the epoch date and the primary name are added to each row, and the candidate identifier is added to the corresponding data set for each epoch. (2 data files).

  2. Multicolour high-speed photometry and Hα spectroscopy of XY UMa

    NASA Astrophysics Data System (ADS)

    Kjurkchieva, D.; Marchev, D.; Ogloza, W.

    2000-02-01

    BVRI photometry and Hα -line spectroscopy of the short-period RS CVn-binary XY UMa are presented. The light curves as a whole as well as the two eclipse minima are asymmetric. The light level after the primary minimum is lower by about 0.04-0.05 mag than that after the secondary one. Two cool spots on the primary with sizes 20degr and 10degr , temperatures 4630 and 4330 K at middle latitudes reproduced well the distortion curve in all colours. The observed Hα profile is quite wide and asymmetric at most the phases out of the eclipses. The radial velocity curve is sinusoidal with semiamplitude K1=120.7+/- 2.9 km/s. The corresponding mass function of the system is 0.082Msun . The phase behaviour of the Hα -profile implies contribution of emission of the chromospheric regions above the photospheric spots.

  3. Buckets of Ash Track Tephra Flux From Halema`uma`u Crater, Hawai`i

    NASA Astrophysics Data System (ADS)

    Swanson, Don; Wooten, Kelly; Orr, Tim

    2009-11-01

    The 2008-2009 eruption at Kīlauea Volcano's summit made news because of its eight small discrete explosive eruptions and noxious volcanic smog (vog) created from outgassing sulfur dioxide. Less appreciated is the ongoing, weak, but continuous output of tephra, primarily ash, from the new open vent in Halema`uma`u Crater. This tephra holds clues to processes causing the eruption and forming the new crater-in-a-crater, and its flux is important to hazard evaluations. The setting of the vent—easily accessible from the Hawaiian Volcano Observatory (HVO)—is unusually favorable for near-daily tracking of tephra mass flux during this small prolonged basaltic eruption. Recognizing this, scientists from HVO are collecting ash and documenting how ejection masses, components, and chemical compositions vary through time.

  4. VizieR Online Data Catalog: Mid-eclipse times of DV UMa (Han+, 2017)

    NASA Astrophysics Data System (ADS)

    Han, Z.-T.; Qian, S.-B.; Irina, V.; Zhu, L.-Y.

    2017-08-01

    New CCD photometric observations of DV UMa were carried out by using three different telescopes. Beginning on 2009 November 12, this star was continuously monitored with the 2.4m telescope at the Lijiang observational station of Yunnan Observatories (YNAO). To collect more data for this binary, an observation was made on 2016 March 29 with an Andor DW436 1K CCD camera mounted on the 85cm reflecting telescope at the XingLong station of the National Astronomical Observatory and another observation made on 2017 January 23 with an Andor DW936 2K CCD camera attached to the 1.0m reflecting telescope at YNAO. During the observations, no filters were used in order to improve the time resolution. (1 data file).

  5. Photometric and Period Investigation of the Late F-type Overcontact Binary II UMa

    NASA Astrophysics Data System (ADS)

    Zhou, X.; Qian, S.-B.; Zhang, J.; Zhang, B.; Kreiner, J.

    2016-03-01

    II UMa is a late F-type (F5) contact binary with a close-in tertiary and a distant visual companion. According to the four-color (B V RcIc) light curves’ solutions of II UMa, it is a high fill-out (f = 86.6%) and low-mass ratio (q = 0.172) contact binary system, which indicates that it is at the late evolutionary stage of late-type tidal-locked binary stars. The masses of the primary star and secondary star are calculated to be {M}1=1.99{M}⊙ and {M}2=0.34{M}⊙ . The primary star has evolved from the zero-age main sequence, but it still appeared before the terminal-age main sequence, and the secondary star is even more evolved. Considering the mass ratio ({M}3/{M}1=0.67) obtained by spectroscopic observations, the mass of the close-in tertiary is estimated to be {M}3=1.34{M}⊙ . The period variations of the binary system are investigated for the first time. According to the observed-calculated (O-C) curve analysis, a continuous period increase at a rate of {dP}/{dt}=4.88× {10}-7 {day} {{yr}}-1 is determined. The parabolic variation in the O-C curve may be part of a cyclic period of change, or the combined period of change of a parabolic variation and a cyclic one. More instances of minimum light are needed to confirm this. The presence of the tertiary component may play an important role in the formation and evolution of this binary system by drawing angular momentum from the central system during the pre-contact stage.

  6. Habitable Zones for Earth-Like Planets in the 47UMa Planetary System

    NASA Astrophysics Data System (ADS)

    Ji, Jianghui; Liu, Lin

    The Habitable zones are usually believed to be appropriate environment for terrestrial planets that can provide the liquid-water, subtle temperature, atmosphere components of CO2, H2O, and N2 [Kasting et al., Icarus 101 (1993) 108], supporting the development and biological evolution of life on their surfaces. In this work [see an accompanied paper, Ji et al., Astrophysical Journal 631 (2005) 1191 for details], we investigated the dynamical architecture of 47 UMa with the planetary configuration of the best-fit orbital solutions by Fischer et al. [Astrophysical Journal 586 (2003) 1394], to study the existence of the Earth-like planets in the region for 0.05 AU ≤ a ≤ 2.0 AU for 47 UMa by numerical simulations. In the study, we found that the “hot Earths” at 0.05 AU ≤ a ≤ 0.4 AU can dynamically survive at least for 1 Myr. The Earth-like planets can eventually remain in the system for 10 Myr at the areas involved in mean motion resonance (MMR) (e.g., 3:2 MMR and 9:5 MMR) with the inner companion. Moreover, we showed that the 2:1 and 3:1 resonances could be marginally stable, but the 5:2 MMR is unstable. In a dynamical sense, we point out that the most possible candidate habitable environment is that the Earth-like planets may bear the orbits of 0.8 AU ≤ a ≤ 1.0 AU and 1.0 AU ≤ a ≤ 1.30 AU (except 5:2 MMR) for relatively lower eccentricities. We also conducted similar studies in other multi-planet systems and found the potential existence of the Earth-like planets in habitable zones.

  7. THE LEECH EXOPLANET IMAGING SURVEY: ORBIT AND COMPONENT MASSES OF THE INTERMEDIATE-AGE, LATE-TYPE BINARY NO UMa

    SciTech Connect

    Schlieder, Joshua E.; Skemer, Andrew J.; Hinz, Philip; Leisenring, Jarron; Defrère, Denis; Close, Laird M.; Eisner, Josh A.; Maire, Anne-Lise; Desidera, Silvano; Skrutskie, Michael F.; Bailey, Vanessa; Esposito, Simone; Strassmeier, Klaus G.; Weber, Michael; Biller, Beth A.; Bonnefoy, Mickaël; Buenzli, Esther; Henning, Thomas; Crepp, Justin R.; Hofmann, Karl-Heinz; and others

    2016-02-10

    We present high-resolution Large Binocular Telescope LBTI/LMIRcam images of the spectroscopic and astrometric binary NO UMa obtained as part of the LBT Interferometer Exozodi Exoplanet Common Hunt exoplanet imaging survey. Our H-, K{sub s}-, and L′-band observations resolve the system at angular separations <0.″09. The components exhibit significant orbital motion over a span of ∼7 months. We combine our imaging data with archival images, published speckle interferometry measurements, and existing spectroscopic velocity data to solve the full orbital solution and estimate component masses. The masses of the K2.0 ± 0.5 primary and K6.5 ± 0.5 secondary are 0.83 ± 0.02 M{sub ⊙} and 0.64 ± 0.02 M{sub ⊙}, respectively. We also derive a system distance of d = 25.87 ± 0.02 pc and revise the Galactic kinematics of NO UMa. Our revised Galactic kinematics confirm NO UMa as a nuclear member of the ∼500 Myr old Ursa Major moving group, and it is thus a mass and age benchmark. We compare the masses of the NO UMa binary components to those predicted by five sets of stellar evolution models at the age of the Ursa Major group. We find excellent agreement between our measured masses and model predictions with little systematic scatter between the models. NO UMa joins the short list of nearby, bright, late-type binaries having known ages and fully characterized orbits.

  8. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. II The Second Year (2009-2010)

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Maehara, Hiroyuki; Uemura, Makoto; Henden, Arne; Miguel, Enrique De; Miller, Ian; Dubovsky, Pavol A.; Kudzej, Igor; Kiyota, Seiichiro; Hambsch, Franz-Josef; Tanabe, Kenji; Imamura, Kazuyoshi; Kunitomi, Nanae; Takagi, Ryosuke; Nose, Mikiha; Akazawa, Hidehiko; Masi, Gianluca; Nakagawa, Shinichi; Iino, Eriko; Noguchi, Ryo; Matsumoto, Katsura; Fujii, Daichi; Kobayashi, Hiroshi; Ogura, Kazuyuki; Ohtomo, Sachi; Yamashita, Kousei; Yanagisawa, Hirofumi; Itoh, Hiroshi; Bolt, Greg; Monard, Berto; Ohshima, Tomohito; Shears, Jeremy; Ruiz, Javier; Imada, Akira; Oksanen, Arto; Nelson, Peter; Gomez, Tomas L.; Staels, Bart; Boyd, David; Voloshina, Irina B.; Krajci, Thomas; Crawford, Tim; Stockdale, Chris; Richmond, Michael; Morelle, Etienne; Novák, Rudolf; Nogami, Daisaku; Ishioka, Ryoko; Brady, Steve; Simonsen, Mike; Pavlenko, Elena P.; Ringwald, Frederick A.; Kuramoto, Tetsuya; Miyashita, Atsushi; Pickard, Roger D.; Hynek, Tomáš; Dvorak, Shawn; Stubbings, Rod; Muyllaert, Eddy

    2010-12-01

    Continued from Kato et al. (2009, PASJ, 61, S395), we collected the times of superhump maxima for 68 SU UMa-type dwarf novae, mainly observed during the 2009-2010 season. The newly obtained data confirmed the basic findings reported in Kato et al. (ibid.): the presence of stages A-C and the predominance of positive period derivatives during stage B in systems with superhump periods shorter than 0.07 d. There was a systematic difference in the period derivatives for the systems with superhump periods longer than 0.075 d between this study and Kato et al. (ibid.). We suggest that this difference was possibly caused by a relative lack of frequently outbursting SU UMa-type dwarf novae in this period regime in the present study. We recorded a strong beat phenomenon during the 2009 superoutburst of IY UMa. A close correlation between the beat period and the superhump period suggests that the changing angular velocity of the apsidal motion of the elliptical disk is responsible for the variation of the superhump periods. We also described three new WZ Sge-type objects with established early superhumps and one with likely early superhumps. We suggest that two systems, VX For and EL UMa, are WZ Sge-type dwarf novae with multiple rebrightenings. The O - C variation in OT J213806.6+261957 suggests that the frequent absence of rebrightenings in very short-Porb objects can be the result of a sustained superoutburst plateau at the epoch when usual SU UMa-type dwarf novae return to quiescence, preceding a rebrightening. We also present a formulation for a variety of Bayesian extensions to traditional period analyses.

  9. The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate-Age, Late-Type Binary NO UMa

    NASA Astrophysics Data System (ADS)

    Schlieder, Joshua E.; Skemer, Andrew J.; Maire, Anne-Lise; Desidera, Silvano; Hinz, Philip; Skrutskie, Michael F.; Leisenring, Jarron; Bailey, Vanessa; Defrère, Denis; Esposito, Simone; Strassmeier, Klaus G.; Weber, Michael; Biller, Beth A.; Bonnefoy, Mickaël; Buenzli, Esther; Close, Laird M.; Crepp, Justin R.; Eisner, Josh A.; Hofmann, Karl-Heinz; Henning, Thomas; Morzinski, Katie M.; Schertl, Dieter; Weigelt, Gerd; Woodward, Charles E.

    2016-02-01

    We present high-resolution Large Binocular Telescope LBTI/LMIRcam images of the spectroscopic and astrometric binary NO UMa obtained as part of the LBT Interferometer Exozodi Exoplanet Common Hunt exoplanet imaging survey. Our H-, Ks-, and L‧-band observations resolve the system at angular separations <0.″09. The components exhibit significant orbital motion over a span of ∼7 months. We combine our imaging data with archival images, published speckle interferometry measurements, and existing spectroscopic velocity data to solve the full orbital solution and estimate component masses. The masses of the K2.0 ± 0.5 primary and K6.5 ± 0.5 secondary are 0.83 ± 0.02 M⊙ and 0.64 ± 0.02 M⊙, respectively. We also derive a system distance of d = 25.87 ± 0.02 pc and revise the Galactic kinematics of NO UMa. Our revised Galactic kinematics confirm NO UMa as a nuclear member of the ∼500 Myr old Ursa Major moving group, and it is thus a mass and age benchmark. We compare the masses of the NO UMa binary components to those predicted by five sets of stellar evolution models at the age of the Ursa Major group. We find excellent agreement between our measured masses and model predictions with little systematic scatter between the models. NO UMa joins the short list of nearby, bright, late-type binaries having known ages and fully characterized orbits. Based on data obtained with the STELLA robotic telescope in Tenerife, an AIP facility jointly operated by AIP and IAC.

  10. Astronomia cultural e meio ambiente segundo uma abordagem holística

    NASA Astrophysics Data System (ADS)

    Jafelice, L. C.

    2003-08-01

    Neste trabalho ampliamos a discussão da abordagem holística para o ensino de astronomia que temos desenvolvido nos últimos anos, analisamos novos resultados e apresentamos exemplos práticos para interessados em experimentá-la. A constatação básica a orientar este enfoque é que cursos introdutórios em astronomia costumam ser excessiva e prematuramente técnicos, além de assumirem uma visão tradicional, muito estreita, do que seja educação científica, herdada da era cartesiana e positivista da ciência. Fundamentamos porque é importante que elementos de astronomia cultural ofereçam o mote e constituam o eixo norteador daqueles cursos e porque é urgente revermos a visão que temos da relação entre astronomia e meio ambiente. Um ponto central nesta abordagem é explorar formas de reativar e atualizar uma relação orgânica com o meio e excitar a consciência de nossa inevitável e profunda interdependência com ele em nível cósmico. Neste trabalho exemplificamos a possibilidade de concretização desta proposta em três diferentes situações: disciplinas de cursos de licenciatura em geografia e em física; escolas de nível fundamental; e, neste caso ainda a ser implementada, comunidades carentes. Estes casos envolvem públicos e espaços diferenciados para educação formal e não-formal. Dos casos já implementados, destacamos os resultados alcançados pelos alunos: enriquecimento cultural, aprendizagem significativa de conteúdos astronômicos tradicionais; mudanças de comportamento, incorporando contato diário com o céu; e freqüentes vivências de sentimentos empáticos que redirecionam a relação com a natureza e a consciência ecológica global. Além disto, para interessados em aplicar esta proposta, também socializamos procedimentos e cuidados para a implementação de ações alternativas consonantes com a mesma. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP)

  11. JH and K-band spectra of three SU UMa-type Dwarf Novae

    NASA Astrophysics Data System (ADS)

    Ishioka, R.; Sekiguchi, K.; Maehara, H.

    2007-08-01

    We present the results of JH and K-band spectroscopy on three SU UMa-type dwarf novae with orbital periods of 1.33 ~1.37 hr. We performed the SED fitting for the obtained spectra by assuming a power law distribution for the accretion disk and using template spectra of late-type dwarfs for secondary star. ASAS 002511+1217.2 and EQ J183926+260409 are WZ Sge-type or WX Cet-type dwarf novae. We found strong water absorption features in their spectra, which are characteristic in late M- or L-type dwarfs. The SED fitting suggests that their secondary contributions to the overall SED are less than one third. We identified the secondary stars as M9 and L1 type dwarfs, which are rather less massive but still normal stars. The spectrum of SDSS J013701-091235 is dominated by the secondary component. Spectral features of this object are similar to those of an early M-type dwarf in spite of its short orbital period. The spectrum of SDSS0137 strongly suggests that the evolutionary path of this object is different from that of ordinary CVs, and this object is a candidate of EI Psc-like systems.

  12. Implementation of UMA concept in advanced Internet environments using MPEG-21

    NASA Astrophysics Data System (ADS)

    Rovira, Marc; Freixes, Marc; Lopez, Alejandro; Fernandez, Gabriel

    2005-10-01

    This work presents a partial development within the Internet2 Catalan project called "Integrated Project" which aims to design and build an advanced Internet environment based on Universal Multimedia Access (UMA) concept using MPEG-21 standard tools in order to enable transparent and augmented use of multimedia content across a wide range of networks, devices and by different users. The project is integrated with several modules using Web Service architecture in an interoperable manner to accomplish a complete distributed system. Within this framework, the DI Management & Personalization module provides services such as content recommendation, advanced searches, best content adaptation possibilities and session mobility management. By means of cataloguing tools, user preferences setting and update according to user's habit consumption, it offers content recommendations taking also into account user preferences, terminal capabilities, and network characteristics. Finally, during the consumption process, the Adaptation Decision Engine selects the best adaptation process in each case taking into account network characteristics, terminal capabilities, and state of AV content transcoding servers. The module provides extensive use of MPEG-21 and MPEG-7 standards ensuring interoperability with other similar systems.

  13. An Orbital Period Study of the W UMa-Type Binary RZ Comae Berenicis

    NASA Astrophysics Data System (ADS)

    Qian, Sheng-Bang; He, Jia-Jia

    2005-12-01

    New photoelectric and CCD photometry observations of a short-period W UMa-type binary system, RZ Com, are presented. The light curves of Broglia (1960, Contr. Milano-Merate, 165) were symmetric in V band, while the present light curve shows a typical O'Connell effect, with Maximum I brighter than Maximum II by 0.015mag. It is found that the light curve of the binary star has changed from W-subtype to A-subtype according to Binnendijk's classification. This variation may be caused by the activity of dark spot on the primary component. Combining four newly determined times of the light minimum with others published in the literature, the orbital period change of the system was investigated. A small-amplitude oscillation (A = 0.0058 d), with a period of 44.8yr has been discovered to be superimposed on a long-term period increase with a rate of dP/dt = +4.12 × 10-8 d yr-1. The period oscillation can be explained either by the light-time effect via the presence of an unseen third body or by magnetic-activity cycles of the components. The mass ratio of RZ Com is q = 0.43. The secular period variation is in agreement with the conclusions of Qian (2001, MNRAS, 328, 914; 2003, MNRAS, 342, 1260). This indicates that it is on the TRO-controlled stage of the evolutionary scheme proposed by Qian.

  14. Absolute-magnitude Calibration for W UMa-type Systems Based on Gaia Data

    NASA Astrophysics Data System (ADS)

    Mateo, Nicole M.; Rucinski, Slavek M.

    2017-09-01

    Tycho-Gaia Astrometric Solution (TGAS) parallax data are used to determine absolute magnitudes M V for 318 W UMa-type (EW) contact binary stars. A very steep (slope ≃ ‑9), single-parameter ({log}P), linear calibration can be used to predict M V to about 0.1–0.3 mag over the whole range of accessible orbital period, 0.22< P< 0.88 days. A similar calibration for the most common systems with 0.275< P< 0.575 days predicts M V values to about 0.06–0.16 mag. For orbital period values both shorter and longer than the central range, the period dependence is respectively steeper and shallower, i.e., the binaries are fainter in M V than predicted by the whole-range linear law. The steepness of the relation for short-period systems implies important consequences for the detectability of the faintest binaries, defining the short-period cut-off of the period distribution. Although the scatter around the linear {log}P-fit is fairly large (0.2–0.4 mag), the current data do not support the inclusion of a B-V color term in the calibration. ). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

  15. Observations and light curve solutions of six deep-contact W UMa binaries

    NASA Astrophysics Data System (ADS)

    Kjurkchieva, D. P.; Popov, V. A.; Vasileva, D. L.; Petrov, N. I.

    2017-10-01

    This work presents photometric observations of the W UMa binaries V0637 Peg. V0473 Cam, CSS J153314.8+560527, CSS J075258.0+382035, V0416 Gem and NSVS 6859986, made using Sloan g' and i'$ filters. The periods of these binaries are in the range of 0.26-0.43 d. The light curve solutions revealed that the components of each binary system are almost equal in temperature. The stellar components are of G and K spectral types and undergo total eclipses. All observation targets have deep-contact configurations with a fill-out factor of f≥0.5. NSVS 6859986 has one of the highest fill-out factors that have been determined, f=0.84. We studied the empirical dependencies between the fill-out factor and the stellar parameters (temperature, period, mass ratio, relative component radii, and luminosity ratio) in a sample of around thirty stars; they are consistent with theoretical predictions, although there are deviations from the main tendencies.

  16. Phenomenological Parameters of the Prototype Eclipsing Binaries Algol, β Lyrae and W UMa

    NASA Astrophysics Data System (ADS)

    Tkachenko, Mariia G.; Andronov, Ivan L.; Chinarova, Lidia L.

    2016-12-01

    The phenomenological parameters of eclipsing binary stars, which are the prototypes of the EA, EB and EW systems are determined using the expert complex of computer programs, which realizes the NAV ("New Algol Variable") algorithm (Andronov 2010, 2012) and its possible modifications are discussed, as well as constrains for estimates of some physical parameters of the systems in a case of photometric observations only, such as the degree of eclipse, ratio of the mean surface brightnesses of the components. The half-duration of the eclipse is 0.0617(7), 0.1092(18) and 0.1015(7) for Algol, β Lyrae and W UMa, respectively. The brightness ratio is 6.8±1.0, 4.9±1.0 and 1.15±0.13. These results show that the eclipses have distinct begin and end not only in EA (as generally assumed), but also in EB and EW - type systems as well. The algorithm may be applied to classification and study of the newly discovered (or poorly studied) eclipsing variables based on own observations or that obtained using photometric surveys.

  17. Curious Variables Experiment (CURVE). RZ LMi - the Most Active SU UMa Star

    NASA Astrophysics Data System (ADS)

    Olech, A.; Wisniewski, M.; Zloczewski, K.; Cook, L. M.; Mularczyk, K.; Kedzierski, P.

    2008-06-01

    We report extensive photometry of the frequently outbursting dwarf nova RZ Leo Minoris. During two seasons of observations we detected 12 superoutbursts and 7 normal outbursts. The V magnitude of the star varied in range from 16.5 mag to 13.9 mag. The superoutbursts occur quite regularly flashing every 19.07(4) days and lasting slightly over 10 days. The average interval between two successive normal outbursts is 4.027(3) days. The mean superhump period observed during the superoutbursts is P_sh=0.059396(4) days (85.530+/-0.006 min). The period of the superhumps was constant except for one superoutburst when it increased with a rate of dot P/P_sh=7.6(1.9)x10^-5. Our observations indicate that RZ LMi enters the stage of permanent superhumps, both in superoutbursts and quiescence. This may indicate that decoupling of thermal and tidal instabilities play important role in ER UMa systems. No periodic light variations which can be connected with orbital period of the binary were seen, thus the mass ratio and evolutionary status of RZ LMi are still unknown.

  18. VizieR Online Data Catalog: HD 163151: a new W UMa type system (Rodriguez+ 1998)

    NASA Astrophysics Data System (ADS)

    Rodríguez, E.; Claret, A.; García, J. M.; Zerbi, F. M.; Garrido, R.; Martín, S.; Akan, C.; Luedeke, K.; Keskin, V.; Ibanoglu, C.; Evren, S.; Tunca, Z.; Pekunlu, R.; Paparo, M.; Nuspl, J.; Krisciunas, K.; Jiang, S. Y.

    1998-06-01

    Table 2 contains 408 simultaneous measurements collected in each of the four uvby colours of the Stromgren photometric system for the W UMa system HD 163151. The data are magnitude differences (Du, Dv, Db, Dy, D(b-y), Dm1, Dc1) of the variable star minus comparison star in the standard system versus Heliocentric Julian Day. Tables 3, 4 and 5 are the same, but for Hβ (65 points), Johnson B data (212 points) and Johnson V data (355 points). The comparison star is HD 166095. The origin in time is the Julian Day 2449858. The observations were carried out (by E. Rodriguez, A. Claret, J.M. Garcia, F.M. Zerbi, R. Garrido, S. Martin, C. Akan, K. Luedeke, V. Keskin, C. Ibanoglu, S. Evren, Z. Tunca, R. Pekunlu, M. Paparo, J. Nuspl, K. Krisciunas and S.Y. Jiang) in 1995 during the course of a multisite campaign. The following telescopes were used: 90cm telescope of the Sierra Nevada Observatory, Spain (uvby-Hβ photometry); 50cm telescope at the Ege University Observatory, Turkey (BV-uvby); 50cm telescope at Piszkesteto mountain station, Konkoly Observatory, Hungary (BV); 50cm telescope at the Merate Observatory, Italy (V); 30cm telescope at Albuquerque, New Mexico, USA (V) and 15cm telescope at Mauna Kea, Hawaii, USA (V). (4 data files).

  19. The Effect of Blowsand Reduction on the Abundance of the Fringe-Toed Lizard (Uma inornata) in the Coachella Valley, California,

    DTIC Science & Technology

    1981-10-01

    dunes" (England and Nelson 1976). In fact, Plot 1 included one of the study areas used by England and Nelson. Both Norris (1958) and Pough (1970) have...inhibit burrowing by Uma (Norris 1958, Pough 1970), these measures were of little use in understanding the densities of Uma in Plots 1-9. In fact, when...situations (Stebbins 1944, Norris 1958) but some of Pough’s (1970) observations are at odds with these earlier ideas. Pough observed that Uma retreated at

  20. Backyard Research on Cataclysmic Variables by a Consortium of Professional and Amateur Astronomers: DV UMa-A Case Study

    NASA Astrophysics Data System (ADS)

    Vanmunster, T.

    2006-06-01

    The Center for Backyard Astrophysics (CBA) is a multi-longitude network of small photometric telescopes, owned by talented amateurs, who study periodic phenomena in Cataclysmic Variables (CVs). The CBA is among the leading examples of successful partnerships between professional and amateur enthusiasts, producing vast amounts of high-quality variable star data. This poster paper highlights observational CBA results obtained on DV UMa, a most interesting eclipsing UGSU-type dwarf nova, that has been intensively monitored during its April 1997 superoutburst.

  1. Survey of period variations of superhumps in SU UMa-type dwarf novae. V. The fifth year (2012-2013)

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Hambsch, Franz-Josef; Maehara, Hiroyuki; Masi, Gianluca; Nocentini, Francesca; Dubovsky, Pavol A.; Kudzej, Igor; Imamura, Kazuyoshi; Ogi, Minako; Tanabe, Kenji; Akazawa, Hidehiko; Krajci, Thomas; Miller, Ian; de Miguel, Enrique; Henden, Arne; Noguchi, Ryo; Ishibashi, Takehiro; Ono, Rikako; Kawabata, Miho; Kobayashi, Hiroshi; Sakai, Daisuke; Nishino, Hirochika; Furukawa, Hisami; Masumoto, Kazunari; Matsumoto, Katsura; Littlefield, Colin; Ohshima, Tomohito; Nakata, Chikako; Honda, Satoshi; Kinugasa, Kenzo; Hashimoto, Osamu; Stein, William; Pickard, Roger D.; Kiyota, Seiichiro; Pavlenko, Elena P.; Antonyuk, Oksana I.; Baklanov, Aleksei V.; Antonyuk, Kirill; Samsonov, Denis; Pit, Nikolaj; Sosnovskij, Aleksei; Oksanen, Arto; Harlingten, Caisey; Tyyskä, Jenni; Monard, Berto; Shugarov, Sergey Yu.; Chochol, Drahomir; Kasai, Kiyoshi; Maeda, Yutaka; Hirosawa, Kenji; Itoh, Hiroshi; Sabo, Richard; Ulowetz, Joseph; Morelle, Etienne; Michel, Raúl; Suárez, Genaro; James, Nick; Dvorak, Shawn; Voloshina, Irina B.; Richmond, Michael; Staels, Bart; Boyd, David; Andreev, Maksim V.; Parakhin, Nikolai; Katysheva, Natalia; Miyashita, Atsushi; Nakajima, Kazuhiro; Bolt, Greg; Padovan, Stefano; Nelson, Peter; Starkey, Donn R.; Buczynski, Denis; Starr, Peter; Goff, William N.; Denisenko, Denis; Kochanek, Christopher S.; Shappee, Benjamin; Stanek, Krzysztof Z.; Prieto, José L.; Itagaki, Koh-ichi; Kaneko, Shizuo; Stubbings, Rod; Muyllaert, Eddy; Shears, Jeremy; Schmeer, Patrick; Poyner, Gary; Rodríguez-Marco, Miguel

    2014-04-01

    Continuing the project described in Kato et al. (2009, PASJ, 61, S395), we collected times of superhump maxima for SU UMa-type dwarf novae mainly observed during the 2012-2013 season. We found three objects (V444 Peg, CSS J203937, and MASTER J212624) having strongly positive period derivatives despite the long orbital period (Porb). By using the period of growing stage (stage A) superhumps, we obtained mass ratios for six objects. We characterized nine new WZ Sge-type dwarf novae. We made a pilot survey of the decline rate in the slowly fading parts of SU UMa-type and WZ Sge-type outbursts. The decline time scale was found to generally follow an expected P_orb^{1/4} dependence, and WZ Sge-type outbursts also generally follow this trend. There are some objects which show slower decline rates, and we consider these objects good candidates for period bouncers. We also studied unusual behavior in some objects, including BK Lyn which made a transition from an ER UMa-type state to a novalike (standstill) state in 2013, and unusually frequent occurrences of superoutbursts in NY Ser and CR Boo. We applied the least absolute shrinkage and selection operator (Lasso) power spectral analysis, which has been proven to be very effective in analyzing the Kepler data, to the ground-based photometry of BK Lyn, and detected a dramatic disappearance of the signal of negative superhumps in 2013. We suggested that the mass-transfer rates did not strongly vary between the ER UMa-type state and novalike state in BK Lyn, and this transition was less likely caused by a systematic variation of the mass-transfer rate.

  2. THE FIRST PHOTOMETRIC INVESTIGATION OF THE NEGLECTED W-UMa-TYPE BINARY STAR UZ CMi

    SciTech Connect

    Qian, S.-B.; Li, K.; Liao, W.-P.; Liu, L.; Zhu, L.-Y.; He, J.-J.; Wang, J.-J.; Zhao, E.-G.

    2013-04-15

    UZ CMi was a W-UMa-type binary star found more than 80 years ago. However, it has been neglected in photometric investigations. Here, the first complete light curves in the B, V, R, and I bands are presented and analyzed using the Wilson and Devinney method. It is discovered that UZ CMi is a contact binary (f = 38.4({+-} 2.3)%) with a mass ratio of 0.45. The derived orbital inclination (i = 87 Degree-Sign ) indicates that it is a total eclipsing binary, which suggests that the determined parameters are reliable. By using 17 new eclipse times together with those collected from the literature, we found that the general trend of the observed-calculated (O - C) curve shows an upward parabolic variation that corresponds to a long-term increase in the orbital period at a rate of P-dot = +4.1 x 10{sup -8} days yr{sup -1}. The continuous increase may be caused by a mass transfer from the less massive component to the more massive one. This suggests that UZ CMi is in the thermal relaxation oscillation controlled stage of the evolutionary scheme proposed by Qian. UZ CMi will oscillate around a critical mass ratio and the contact configuration cannot be broken. After the upward parabolic change was removed, the (O - C){sub 2} curve of the photoelectric and charge-coupled device data revealed a cyclic variation with a small amplitude of 0.0026 days and a period of 21.1 yr. The cyclic change was analyzed for the light-travel time effect via the presence of an extremely cool stellar companion.

  3. Infrasonic harmonic tremor and degassing bursts from Halema'uma'u Crater, Kilauea Volcano, Hawaii

    USGS Publications Warehouse

    Fee, David; Garcés, Milton; Patrick, Matt; Chouet, Bernard; Dawson, Phil; Swanson, Donald A.

    2010-01-01

    The formation, evolution, collapse, and subsequent resurrection of a vent within Halema'uma'u Crater, Kilauea Volcano, produced energetic and varied degassing signals recorded by a nearby infrasound array between 2008 and early 2009. After 25 years of quiescence, a vent-clearing explosive burst on 19 March 2008 produced a clear, complex acoustic signal. Near-continuous harmonic infrasonic tremor followed this burst until 4 December 2008, when a period of decreased degassing occurred. The tremor spectra suggest volume oscillation and reverberation of a shallow gas-filled cavity beneath the vent. The dominant tremor peak can be sustained through Helmholtz oscillations of the cavity, while the secondary tremor peak and overtones are interpreted assuming acoustic resonance. The dominant tremor frequency matches the oscillation frequency of the gas emanating from the vent observed by video. Tremor spectra and power are also correlated with cavity geometry and dynamics, with the cavity depth estimated at ~219 m and volume ~3 x 106 m3 in November 2008. Over 21 varied degassing bursts were observed with extended burst durations and frequency content consistent with a transient release of gas exciting the cavity into resonance. Correlation of infrasound with seismicity suggests an open system connecting the atmosphere to the seismic excitation process at depth. Numerous degassing bursts produced very long period (0.03-0.1 Hz) infrasound, the first recorded at Kilauea, indicative of long-duration atmospheric accelerations. Kilauea infrasound appears controlled by the exsolution of gas from the magma, and the interaction of this gas with the conduits and cavities confining it.

  4. Photometric Analysis of the Recently Discovered W UMa Star NR Camelopardalis: Period Change and Spot Migration

    NASA Astrophysics Data System (ADS)

    Shoup, Jenae; Reed, Phillip A.; Joner, Michael D.; Jensen, Eric L. N.; Collins, Karen A; Pepper, Joshua

    2014-06-01

    NR Cam is a short period (P=0.26 days) eclipsing binary of the W UMa type that was relatively recently discovered in the ROTSE1 data of the Northern Sky Variability Survey (NSVS) and was originally listed in the New Catalog of Suspected Variable Stars (NSV) with the identifier NSV 3754. Here we present the first known detailed study of NR Cam, which includes multi-band light curves, color curves, and a photometric orbital solution. NR Cam exhibits a strong O'Connell effect that can be attributed to magnetically induced spot activity on one of the components. Absolute photometry was performed in B and V at the Kutztown University Observatory in 2013 October and November and complementary high precision differential light curves were obtained in BVRI at the same time, as part of the KELT follow-up network, at Brigham Young University's West Mountain Observatory, Swarthmore College's Peter Van de Kamp Observatory, and the University of Louisville's Moore Observatory. After the B-V color curves were used to approximate the stellar surface temperatures and spot locations, the Wilson-Devinney code was employed with a differential corrections routine to determine the most likely stellar properties and orbital parameters. Our solution indicates that the two stars are in contact, sharing a common envelope, and their surface temperatures are approximately 4500 K and 4200 K. The inclination of the orbit was determined to be 68.0 (±0.6) degrees. When compared with the NSVS data, we find that the orbital period of NR Cam has changed over the past decade and that the strength of the O'Connell effect, and the associated spot activity, has also varied significantly.

  5. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Imada, Akira; Uemura, Makoto; Nogami, Daisaku; Maehara, Hiroyuki; Ishioka, Ryoko; Baba, Hajime; Matsumoto, Katsura; Iwamatsu, Hidetoshi; Kubota, Kaori; Sugiyasu, Kei; Soejima, Yuichi; Moritani, Yuuki; Ohshima, Tomohito; Ohashi, Hiroyuki; Tanaka, Junpei; Sasada, Mahito; Arai, Akira; Nakajima, Kazuhiro; Kiyota, Seiichiro; Tanabe, Kenji; Imamura, Kazuyoshi; Kunitomi, Nanae; Kunihiro, Kenji; Taguchi, Hiroki; Koizumi, Mitsuo; Yamada, Norimi; Nishi, Yuichi; Kida, Mayumi; Tanaka, Sawa; Ueoka, Rie; Yasui, Hideki; Maruoka, Koichi; Henden, Arne; Oksanen, Arto; Moilanen, Marko; Tikkanen, Petri; Aho, Mika; Monard, Berto; Itoh, Hiroshi; Dubovsky, Pavol A.; Kudzej, Igor; Dancikova, Radka; Vanmunster, Tonny; Pietz, Jochen; Bolt, Greg; Boyd, David; Nelson, Peter; Krajci, Thomas; Cook, Lewis M.; Torii, Ken'ichi; Starkey, Donn R.; Shears, Jeremy; Jensen, Lasse-Teist; Masi, Gianluca; Hynek, Tomáš; Nová; K, Rudolf; Kociá; N, Radek; Krá; L, Lukáš; Kučá; Ková, Hana; Kolasa, Marek; Štastný, Petr; Staels, Bart; Miller, Ian; Sano, Yasuo; de Ponthière, Pierre; Miyashita, Atsushi; Crawford, Tim; Brady, Steve; Santallo, Roland; Richards, Tom; Martin, Brian; Buczynski, Denis; Richmond, Michael; Kern, Jim; Davis, Stacey; Crabtree, Dustin; Beaulieu, Kevin; Davis, Tracy; Aggleton, Matt; Morelle, Etienne; Pavlenko, Elena P.; Andreev, Maksim; Baklanov, Alexander; Koppelman, Michael D.; Billings, Gary; Urbancok, L'ubomír; Ögmen, Yenal; Heathcote, Bernard; Gomez, Tomas L.; Voloshina, Irina; Retter, Alon; Mularczyk, Krzysztof; Zoczewski, Kamil; Olech, Arkadiasz; Kedzierski, Piotr; Pickard, Roger D.; Stockdale, Chris; Virtanen, Jani; Morikawa, Koichi; Hambsch, Franz-Josef; Garradd, Gordon; Gualdoni, Carlo; Geary, Keith; Omodaka, Toshihiro; Sakai, Nobuyuki; Michel, Raul; Cárdenas, A. A.; Gazeas, Kosmas D.; Niarchos, Panos G.; Yushchenko, Alexander V.; Mallia, Franco; Fiaschi, Marco; Good, Gerry A.; Walker, Stan; James, Nick; Douzu, Ken-Ichi; Julian, Wm Mack, II; Butterworth, Neil D.; Shugarov, Sergey Yu.; Volkov, Igor; Chochol, Drahomir; Katysheva, Natalia; Rosenbush, Alexander E.; Khramtsova, Maria; Kehusmaa, Petri; Reszelski, Maciej; Bedient, James; Liller, William; Pojmanski, Grzegorz; Simonsen, Mike; Stubbings, Rod; Schmeer, Patrick; Muyllaert, Eddy; Kinnunen, Timo; Poyner, Gary; Ripero, Jose; Kriebel, Wolfgang

    2009-12-01

    We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly obtained data and past publications. In many systems, the evolution of the superhump period is found to be composed of three distinct stages: an early evolutionary stage with a longer superhump period, a middle stage with systematically varying periods, and a final stage with a shorter, stable superhump period. During the middle stage, many systems with superhump periods of less than 0.08 d show positive period derivatives. We present observational characteristics of these stages and give greatly improved statistics. Contrary to an earlier claim, we found no clear evidence for a variation of period derivatives among different superoutbursts of the same object. We present an interpretation that the lengthening of the superhump period is a result of the outward propagation of an eccentricity wave, which is limited by the radius near the tidal truncation. We interpret that late-stage superhumps are rejuvenated excitation of a 3:1 resonance when superhumps in the outer disk are effectively quenched. The general behavior of the period variation, particularly in systems with short orbital periods, appears to follow a scenario proposed in Kato, Maehara, and Monard (2008, PASJ, 60, L23). We also present an observational summary of WZ Sge-type dwarf novae. Many of them have shown long-enduring superhumps during a post-superoutburst stage having longer periods than those during the main superoutburst. The period derivatives in WZ Sge-type dwarf novae are found to be strongly correlated with the fractional superhump excess, or consequently with the mass ratio. WZ Sge-type dwarf novae with a long-lasting rebrightening or with multiple rebrightenings tend to have smaller period derivatives, and are excellent candidates for those systems around or after the period minimum of evolution of cataclysmic variables.

  6. V344 Lyrae: A Touchtone SU UMa Cataclysmic Variable in the Kepler Field

    NASA Technical Reports Server (NTRS)

    Smale, Alan P.; Wood, Matt A.; Still, Martin D.; Howell, Steve B.; Cannizzo, John K.

    2012-01-01

    We report on the analysis of the Kepler short-cadence (SC) light curve of V344 Lyr obtained during 2009 June 20 through 2010 Mar 19 (Q2-Q4). The system is an SU UMa star showing dwarf nova outbursts and superoutbursts, and promises to be a touchstone for CV studies for the foreseeable future. The system displays both positive and negative super humps with periods of 2.20 and 2.06-hr, respectively, and we identify an orbital period of 2.11-hr. The positive super humps have a maximum amplitude of approximately 0.025-mag, the negative super humps a maximum amplitude of approximately 0.8 mag, and the orbital period at quiescence has an amplitude of approximately 0.025 mag. The quality of the Kepler data is such that we can test vigorously the models for accretion disk dynamics that have been emerging in the past several years. The SC data for V344 Lyr are consistent with the model that two physical sources yield positive superhumps: early in the superoutburst. the superhump signal is generated by viscous dissipation within the periodically flexing disk. but late in the superoutburst, the signal is generated as the accretion stream bright spot sweeps around the rim of the non-axisymmetric disk. The disk super humps are roughly anti-phased with the stream/late superhumps. The V344 Lyr data also reveal negative super humps arising from accretion onto a tilted disk precessing in the retrograde direction, and suggest that negative superhumps may appear during the decline of DN outbursts. The period of negative superhumps has a positive P(raised dot) in between outbursts.

  7. BVRI Photometric Study of the Twin, Detached, Near-Contact W UMA Binary, GQ Cancri

    NASA Astrophysics Data System (ADS)

    Caton, Daniel B.; Samec, Ronald G.; Olsen, Amber; Van Hamme, Walter V.; Faulkner, Danny R.

    2017-01-01

    CCD BVRcIc light curves of GQ Cancri were observed in April, 2013 on the SARA North 0.9-m Telescope at Kitt Peak National Observatory in Arizona in remote mode. It is a high amplitude (V~0.9-mag) K0-type eclipsing binary (T1~5250 K) with a photometrically determined mass ratio of M2/M1= 0.99. Its spectral type classifies it as a pre-contact W UMa Binary (PCWB). Binary Maker fits and the Wilson-Devinney Mode 2 solutions show that the binary has a detached binary configuration with fill-outs of 94 and 98% for the primary and secondary component, respectively. As expected, the light curve is asymmetric due to spot activity.Three times of minimum light were calculated, for 2 primary and 1 secondary eclipses from our present observations:HJD I = 2456390.66196±0.00002, 2456406.7056±0.0001HJD II = 2456405.6505±0.0002In total, some 20 times of minimum light covering 17 years of observation were used to determine the following linear ephemeris:JDHelMinI=2456406.70556±0. 00088d + 0. 42220887± 0.00000009 × EAn ephemeris with a weak negative quadratic term with a one probable error significance.It is noted that the solution remained in a detached state for every iteration of the computer runs. The components are truly twins with a computed temperature difference of only 25 K, with the flux of the primary component accounting for 52% of the systems light in B,V,Rc and Ic. A 15 degree equatorial hot spot was iterated on the primary component.

  8. Land use impacts on river health of Uma Oya, Sri Lanka: implications of spatial scales.

    PubMed

    Jayawardana, J M C K; Gunawardana, W D T M; Udayakumara, E P N; Westbrooke, M

    2017-04-01

    Human actions on landscapes are a principal threat to the ecological integrity of river ecosystems worldwide. Tropical landscapes have been poorly investigated in terms of the impact of catchment land cover alteration on water quality and biotic indices in comparison to temperate landscapes. Effects of land cover in the catchment at two spatial scales (catchment and site) on stream physical habitat quality, water quality, macroinvertebrate indices and community composition were evaluated for Uma Oya catchment in the upper Mahaweli watershed, Sri Lanka. The relationship between spatial arrangement of land cover in the catchment and water quality, macroinvertebrate indices and community composition was examined using univariate and multivariate approaches. Results indicate that chemical water quality variables such as conductivity and total dissolved solids are mostly governed by the land cover at broader spatial scales such as catchment scale. Shannon diversity index was also affected by catchment scale forest cover. In stream habitat features, nutrients such as N-NO3(-), macroinvertebrate family richness, %shredders and macroinvertebrate community assemblages were predominantly influenced by the extent of land cover at 200 m site scale suggesting that local riparian forest cover is important in structuring macroinvertebrate communities. Thus, this study emphasizes the importance of services provided by forest cover at catchment and site scale in enhancing resilience of stream ecosystems to natural forces and human actions. Findings suggest that land cover disturbance effects on stream ecosystem health could be predicted when appropriate spatial arrangement of land cover is considered and has widespread application in the management of tropical river catchments.

  9. First Photometric Investigation of the Newly Discovered W UMa-type Binary Star MR Com

    NASA Astrophysics Data System (ADS)

    Qian, S.-B.; Liu, N.-P.; Liao, W.-P.; He, J.-J.; Liu, L.; Zhu, L.-Y.; Wang, J.-J.; Zhao, E.-G.

    2013-08-01

    By analyzing multi-color light curves of the newly discovered W UMa-type binary, MR Com, we discovered that it is a shallow-contact binary with a degree of contact factor of f = 10.0% ± 2.1%. Photometric solutions reveal that MR Com is a W-type system with a mass ratio of q = 3.9 where the less massive component is about 90 K hotter than the more massive one. By investigating all of the available times of minimum light, we found that the general trend of the Observed-Calculated (O - C) curve shows a downward parabolic variation while it undergoes a cyclic variation with a small amplitude of 0.0031 days and a period of 10.1 yr. The downward parabolic change corresponds to a long-term decrease in the orbital period at a rate of \\dot{P}=-5.3\\times {10^{-7}} days yr-1 that may be caused by a combination of a mass transfer and an angular momentum loss (AML) via magnetic braking. Among the 16 shallow-contact systems with a decreasing orbital period, MR Com has the lowest mass ratio (e.g., 1/q = 0.26). The shallow-contact configuration, the low-mass ratio, and the long-term period decrease all suggest that systems similar to MR Com are on the AML-controlled stage of the evolutionary scheme proposed by Qian. They will oscillate around a critical mass ratio and evolve into a deep contact with a higher mass ratio. The small-amplitude cyclic change in the O - C curve was analyzed for the light-travel time effect via the presence of an extremely cool stellar companion.

  10. FIRST PHOTOMETRIC INVESTIGATION OF THE NEWLY DISCOVERED W UMa-TYPE BINARY STAR MR Com

    SciTech Connect

    Qian, S.-B.; Liu, N.-P.; Liao, W.-P.; He, J.-J.; Liu, L.; Zhu, L.-Y.; Wang, J.-J.; Zhao, E.-G.

    2013-08-01

    By analyzing multi-color light curves of the newly discovered W UMa-type binary, MR Com, we discovered that it is a shallow-contact binary with a degree of contact factor of f = 10.0% {+-} 2.1%. Photometric solutions reveal that MR Com is a W-type system with a mass ratio of q = 3.9 where the less massive component is about 90 K hotter than the more massive one. By investigating all of the available times of minimum light, we found that the general trend of the Observed-Calculated (O - C) curve shows a downward parabolic variation while it undergoes a cyclic variation with a small amplitude of 0.0031 days and a period of 10.1 yr. The downward parabolic change corresponds to a long-term decrease in the orbital period at a rate of P-dot = -5.3 x 10{sup -7} days yr{sup -1} that may be caused by a combination of a mass transfer and an angular momentum loss (AML) via magnetic braking. Among the 16 shallow-contact systems with a decreasing orbital period, MR Com has the lowest mass ratio (e.g., 1/q = 0.26). The shallow-contact configuration, the low-mass ratio, and the long-term period decrease all suggest that systems similar to MR Com are on the AML-controlled stage of the evolutionary scheme proposed by Qian. They will oscillate around a critical mass ratio and evolve into a deep contact with a higher mass ratio. The small-amplitude cyclic change in the O - C curve was analyzed for the light-travel time effect via the presence of an extremely cool stellar companion.

  11. Modeling the Radial Velocity Curve of the Water Vapor Maser in VX UMa

    NASA Astrophysics Data System (ADS)

    Salter, D. M.; Benson, P. J.; Strelnitski, V. S.

    1999-12-01

    VX UMa is a unique Mira-type star that demonstrates a triple-peaked spectrum of its 1.35-cm H2O maser emission. We used the high-precision curves of radial velocities of the spectral peaks, obtained by Benson & Little-Marenin from 1988 to 1992, as probes of the kinematics of the masing region. The pronounced periodicity of the radial velocity of the central component, with a period equal to the pulsational period of the optical variations, suggests the involvement of pulsations in the observed excursions of radial velocity. However, the radial velocity of the central spectral component produced by a symmetrical, pulsating spherical layer should be constantly zero. Rotation seems to be the most obvious mechanism to impart a small non-zero component to the central feature. We assume that the bulk of maser radiation originates in the equatorial "belt" around the star and approximate this region as a two-dimensional, rotating and pulsating ring. We found that any combination of rotation and pulsation produces a quadruple peaked, not a triple peaked spectrum. Therefore, some asymmetry in the disk or unequal absorption of the two central peaks by ionized gas (e.g. in the shock responsible for the maser emission) is needed. We demonstrate that one of the central peaks can then undergo periodic changes of its radial velocity with the period of pulsation, as observed. A VLBA experiment that may verify our model is under way. This project was supported by the NSF/REU grant AST-9820555.

  12. An extensive analysis of the triple W UMa type binary FI BOO

    SciTech Connect

    Christopoulou, P.-E.; Papageorgiou, A.

    2013-12-01

    We present a detailed analysis of the interesting W UMa binary FI Boo in view of the spectroscopic signature of a third body through photometry, period variation, and a thorough investigation of solution uniqueness. We obtained new BVR{sub c}I{sub c} photometric data that, when combined with spectroscopic data, enable us to analyze the system FI Boo and determine its basic orbital and physical properties through PHOEBE, as well as the period variation by studying the times of the minima. This combined approach allows us to study the long-term period changes in the system for the first time in order to investigate the presence of a third body and to check extensively the solution uniqueness and the uncertainties of derived parameters. Our modeling indicates that FI Boo is a W-type moderate (f = 50.15% ± 8.10%) overcontact binary with component masses of M {sub h} = 0.40 ± 0.05 M {sub ☉} and M {sub c} = 1.07 ± 0.05 M {sub ☉}, temperatures of T {sub h} = 5746 ± 33 K and T {sub c} = 5420 ± 56 K, and a third body, which may play an important role in the formation and evolution. The results were tested by heuristic scanning and parameter kicking to provide the consistent and reliable set of parameters that was used to obtain the initial masses of the progenitors (1.71 ± 0.10 M {sub ☉} and 0.63 ± 0.01 M {sub ☉}, respectively). We also investigated the evolutionary status of massive components with several sets of widely used isochrones.

  13. OT J002656.6+284933 (CSS101212:002657+284933): an SU UMa-type dwarf nova with the longest superhump period

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Tordai, Tamás; Littlefield, Colin; Kasai, Kiyoshi; Shugarov, Sergey Yu.; Katysheva, Natalia; Zaostrojnykh, Anna M.; Pickard, Roger D.; de Miguel, Enrique; Antonyuk, Kirill; Antonyuk, Oksana; Pavlenko, Elena P.; Pit, Nikolai; Itoh, Hiroshi; Ruiz, Javier; Isogai, Keisuke; Kimura, Mariko; Wakamatsu, Yasuyuki; Vanmunster, Tonny; Stone, Geoff

    2017-06-01

    We observed the 2016 outburst of OT J002656.6+284933 (CSS101212:002657+284933) and found that it has the longest recorded [0.13225(1) d on average] superhumps among SU UMa-type dwarf novae. The object is the third known SU UMa-type dwarf nova above the period gap. The outburst, however, was unlike ordinary long-period SU UMa-type dwarf novae in that it showed two post-outburst rebrightenings. It showed superhump evolution similar to short-period SU UMa-type dwarf novae. We could constrain the mass ratio to less than 0.15 (most likely between 0.10 and 0.15) by using superhump periods in the early and post-superoutburst stages. These results suggest the possibility that OT J002656.6+284933 has an anomalously undermassive secondary and it should have followed a different evolutionary track from the standard one.

  14. Uma grade de perfis teóricos para estrelas massivas em transição

    NASA Astrophysics Data System (ADS)

    Nascimento, C. M. P.; Machado, M. A.

    2003-08-01

    Na XXVIII Reunião Anual da Sociedade Astronômica Brasileira (2002) apresentamos uma grade de perfis calculados de acordo com os pontos da trajetória evolutiva de metalicidade solar, Z = 0.02 e taxa de perda de massa () padrão, para estrelas com massa inicial de 25, 40, 60, 85 e 120 massas solares. Estes perfis foram calculados com o auxílio de um código numérico adequado para descrever os ventos de objetos massivos, supondo simetria esférica, estacionaridade e homogeneidade. No presente trabalho, apresentamos a complementação da grade com os perfis teóricos relativos às trajetórias de Z = 0.02 com taxa de perda de massa dobrada em relação a padrão (2´), e de metalicidade Z = 0.008. Para cada ponto das três trajetórias obtemos os perfis teóricos de Ha, Hb, Hg e Hd, e como esperado eles se apresentam em pura emissão, pura absorção ou em P-Cygni. Para valores de taxa de perda de massa muito baixos (~10-7) não há formação de linhas, o que é visto nos primeiros pontos em todas as trajetórias. Em geral, para um mesmo ponto a componente de emissão diminui e a absorção aumenta de Ha para Hd. É verificado que as trajetórias com Z = 0.02 e padrão possuem menos circuitos (loops) do que as com metalicidade Z = 0.02 e 2´ padrão, e seus perfis são, em geral, menos intensos. Em relação a trajetória de Z = 0.008, verifica-se menos circuitos e maior variação em luminosidade, e seus perfis mostram-se em, algumas trajetórias, mais intensos. Verificamos também que, pontos distintos em uma mesma trajetória, apresentam perfis diferentes para valores similares de luminosidade e temperatura efetiva. Sendo assim, uma grade de perfis teóricos parece ser útil para fornecer uma informação preliminar sobre o estágio evolutivo de uma estrela massiva.

  15. [Cirurgia Taurina--emergency medical treatment of bullfighters in Spain].

    PubMed

    Lehmann, V; Lehmann, J

    2003-08-01

    A considerable risk of life-threatening injury is inherent to bullfighting. Thus, a unique form of emergency treatment has evolved over recent decades of organized bull-fighting. Today bullfight arenas in larger cities are equipped with emergency facilities including fully furnished operating rooms. During a fiesta these facilities are run by a medical team consisting of three surgeons, one intensive care specialist, and one anesthesiologist with their supporting medical personnel. In smaller arenas or villages immediate care units consist of emergency vehicles, and a mobile container equipped with a fully functional operating room. Of all toreros the matadores including the novilleros are most often injured in 56 % of cases. This rate decreases for banderillos (30 %), and for picadores (14 %). Parts of the body that are most frequently affected are thighs, and the inguinal region (54 %). Head and neck injuries are seen in 19 %, and 12 % of cases present with open abdominal wounds including liver or gastrointestinal tract traumas. 10 % of injuries affect the thorax, and 4 % the pelvic floor. The particular form of organised medical treatment for bullfighters in Spain has only developed since the nineteen-thirties. In 1972 a scientific society for bullfight surgery was founded in Spain by specialized surgeons, and immediate care specialists holding a first convention that year. The society is continuously striving to improve technical and logistical aspects of immediate medical care for injured bullfighters.

  16. WZ Cephei: A Dynamically Active W UMa-Type Binary Star

    NASA Astrophysics Data System (ADS)

    Jeong, Jang-Hae; Kim, Chun-Hwey

    2011-09-01

    An intensive analysis of 185 timings of WZ Cep, including our new three timings, was made to understand the dynamical picture of this active W UMa-type binary. It was found that the orbital period of the system has complexly varied in two cyclical components superposed on a secularly downward parabola over about 80y. The downward parabola, corresponding to a secular period decrease of -9.d97 × 10-8 y-1, is most probably produced by the action of both angular momentum loss (AML) due to magnetic braking and mass-transfer from the massive primary component to the secondary. The period decrease rate of -6.d72 × 10-8 y-1 due to AML contributes about 67% to the observed period decrease. The mass flow of about 5.16 × 10-8 M⊙ y-1 from the primary to the secondary results the remaining 33% period decrease. Two cyclical components have an 11.y8 period with amplitude of 0.d0054 and a 41.y3 period with amplitude of 0.d0178. It is very interesting that there seems to be exactly in a commensurable 7:2 relation between their mean motions. As the possible causes, two rival interpretations (i.e., light-time effects (LTE) by additional bodies and the Applegate model) were considered. In the LTE interpretation, the minimum masses of 0.30 M⊙ for the shorter period and 0.49 M⊙ for the longer one were calculated. Their contributions to the total light were at most within 2%, if they were assumed to be main-sequence stars. If the LTE explanation is true for the WZ Cep system, the 7:2 relation found between their mean motions would be interpreted as a stable 7:2 orbit resonance produced by a long-term gravitational interaction between two tertiary bodies. In the Applegate model interpretation, the deduced model parameters indicate that the mechanism could work only in the primary star for both of the two period modulations, but could not in the secondary. However, we couldn't find any meaningful relation between the light variation and the period variability from the historical

  17. Survey of period variations of superhumps in SU UMa-type dwarf novae. IX. The ninth year (2016-2017)

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Isogai, Keisuke; Hambsch, Franz-Josef; Vanmunster, Tonny; Itoh, Hiroshi; Monard, Berto; Tordai, Tamás; Kimura, Mariko; Wakamatsu, Yasuyuki; Kiyota, Seiichiro; Miller, Ian; Starr, Peter; Kasai, Kiyoshi; Shugarov, Sergey Yu.; Chochol, Drahomir; Katysheva, Natalia; Zaostrojnykh, Anna M.; Sekeráš, Matej; Kuznyetsova, Yuliana G.; Kalinicheva, Eugenia S.; Golysheva, Polina; Krushevska, Viktoriia; Maeda, Yutaka; Dubovsky, Pavol A.; Kudzej, Igor; Pavlenko, Elena P.; Antonyuk, Kirill A.; Pit, Nikolaj V.; Sosnovskij, Aleksei A.; Antonyuk, Oksana I.; Baklanov, Aleksei V.; Pickard, Roger D.; Kojiguchi, Naoto; Sugiura, Yuki; Tei, Shihei; Yamamura, Kenta; Matsumoto, Katsura; Ruiz, Javier; Stone, Geoff; Cook, Lewis M.; de Miguel, Enrique; Akazawa, Hidehiko; Goff, William N.; Morelle, Etienne; Kafka, Stella; Littlefield, Colin; Bolt, Greg; Dubois, Franky; Brincat, Stephen M.; Maehara, Hiroyuki; Sakanoi, Takeshi; Kagitani, Masato; Imada, Akira; Voloshina, Irina B.; Andreev, Maksim V.; Sabo, Richard; Richmond, Michael; Rodda, Tony; Nelson, Peter; Nazarov, Sergey; Mishevskiy, Nikolay; Myers, Gordon; Denisenko, Denis; Stanek, Krzysztof Z.; Shields, Joseph V.; Kochanek, Christopher S.; Holoien, Thomas W.-S.; Shappee, Benjamin; Prieto, José L.; Itagaki, Koh-ichi; Nishiyama, Koichi; Kabashima, Fujio; Stubbings, Rod; Schmeer, Patrick; Muyllaert, Eddy; Horie, Tsuneo; Shears, Jeremy; Poyner, Gary; Moriyama, Masayuki

    2017-10-01

    Continuing the project described by Kato et al. (2009, PASJ, 61, S395), we collected times of superhump maxima for 127 SU UMa-type dwarf novae observed mainly during the 2016-2017 season and characterized these objects. We provide updated statistics of the relation between the orbital period and the variation of superhumps, the relation between period variations and the rebrightening type in WZ Sge-type objects. We obtained the period minimum of 0.05290(2) d and confirmed the presence of the period gap above the orbital period ˜0.09 d. We note that four objects (NY Her, 1RXS J161659.5+620014, CRTS J033349.8-282244, and SDSS J153015.04+094946.3) have supercycles shorter than 100 d but show infrequent normal outbursts. We consider that these objects are similar to V503 Cyg, whose normal outbursts are likely suppressed by a disk tilt. These four objects are excellent candidates to search for negative superhumps. DDE 48 appears to be a member of ER UMa-type dwarf novae. We identified a new eclipsing SU UMa-type object, MASTER OT J220559.40-341434.9. We observed 21 WZ Sge-type dwarf novae during this interval and report 18 of them in this paper. Among them, ASASSN-16js is a good candidate for a period bouncer. ASASSN-16ia showed a precursor outburst for the first time in a WZ Sge-type superoutburst. ASASSN-16kg, CRTS J000130.5+050624, and SDSS J113551.09+532246.2 are located in the period gap. We have newly obtained 15 orbital periods, including periods from early superhumps.

  18. Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015)

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Hambsch, Franz-Josef; Dubovsky, Pavol A.; Kudzej, Igor; Monard, Berto; Miller, Ian; Itoh, Hiroshi; Kiyota, Seiichiro; Masumoto, Kazunari; Fukushima, Daiki; Kinoshita, Hiroki; Maeda, Kazuki; Mikami, Jyunya; Matsuda, Risa; Kojiguchi, Naoto; Kawabata, Miho; Takenaka, Megumi; Matsumoto, Katsura; de Miguel, Enrique; Maeda, Yutaka; Ohshima, Tomohito; Isogai, Keisuke; Pickard, Roger D.; Henden, Arne; Kafka, Stella; Akazawa, Hidehiko; Otani, Noritoshi; Ishibashi, Sakiko; Ogi, Minako; Tanabe, Kenji; Imamura, Kazuyoshi; Stein, William; Kasai, Kiyoshi; Vanmunster, Tonny; Starr, Peter; Oksanen, Arto; Pavlenko, Elena P.; Antonyuk, Oksana I.; Antonyuk, Kirill A.; Sosnovskij, Aleksei A.; Pit, Nikolaj V.; Babina, Julia V.; Sklyanov, Aleksandr; Novák, Rudolf; Dvorak, Shawn; Michel, Raúl; Masi, Gianluca; Littlefield, Colin; Ulowetz, Joseph; Shugarov, Sergey Yu.; Golysheva, Polina Yu.; Chochol, Drahomir; Krushevska, Viktoriia; Ruiz, Javier; Tordai, Tamás; Morelle, Etienne; Sabo, Richard; Maehara, Hiroyuki; Richmond, Michael; Katysheva, Natalia; Hirosawa, Kenji; Goff, William N.; Dubois, Franky; Logie, Ludwig; Rau, Steve; Voloshina, Irina B.; Andreev, Maksim V.; Shiokawa, Kazuhiko; Neustroev, Vitaly V.; Sjoberg, George; Zharikov, Sergey; James, Nick; Bolt, Greg; Crawford, Tim; Buczynski, Denis; Cook, Lewis M.; Kochanek, Christopher S.; Shappee, Benjamin; Stanek, Krzysztof Z.; Prieto, José L.; Denisenko, Denis; Nishimura, Hideo; Mukai, Masaru; Kaneko, Shizuo; Ueda, Seiji; Stubbings, Rod; Moriyama, Masayuki; Schmeer, Patrick; Muyllaert, Eddy; Shears, Jeremy; Modic, Robert J.; Paxson, Kevin B.

    2015-12-01

    Continuing the project described by Kato et al. (2009, PASJ, 61, S395), we collected times of superhump maxima for 102 SU UMa-type dwarf novae, observed mainly during the 2014-2015 season, and characterized these objects. Our project has greatly improved the statistics of the distribution of orbital periods, which is a good approximation of the distribution of cataclysmic variables at the terminal evolutionary stage, and has confirmed the presence of a period minimum at a period of 0.053 d and a period spike just above this period. The number density monotonically decreased toward the longer period and there was no strong indication of a period gap. We detected possible negative superhumps in Z Cha. It is possible that normal outbursts are also suppressed by the presence of a disk tilt in this system. There was no indication of enhanced orbital humps just preceding the superoutburst, and this result favors the thermal-tidal disk instability as the origin of superoutbursts. We detected superhumps in three AM CVn-type dwarf novae. Our observations and recent other detections suggest that 8% of objects showing dwarf nova-type outbursts are AM CVn-type objects. AM CVn-type objects and EI Psc-type objects may be more abundant than previously recognized. OT J213806, a WZ Sge-type object, exhibited remarkably different features between the 2010 and 2014 superoutbursts. Although the 2014 superoutburst was much fainter, the plateau phase was shorter than the 2010 one, and the course of the rebrightening phase was similar. This object indicates that the O - C diagrams of superhumps can indeed be variable, at least in WZ Sge-type objects. Four deeply eclipsing SU UMa-type dwarf novae (ASASSN-13cx, ASASSN-14ag, ASASSN-15bu, and NSV 4618) were identified. We studied long-term trends in supercycles in MM Hya and CY UMa and found systematic variations of supercycles of ˜20%.

  19. Impact of Intensive Physiotherapy on Cognitive Function after Coronary Artery Bypass Graft Surgery.

    PubMed

    Cavalcante, Elder Dos Santos; Magario, Rosmeiri; Conforti, César Augusto; Cipriano Júnior, Gerson; Arena, Ross; Carvalho, Antonio Carlos C; Buffolo, Enio; Luna Filho, Bráulio

    2014-11-01

    Background: Coronary artery bypass graft (CABG) is a standard surgical option for patients with diffuse and significant arterial plaque. This procedure, however, is not free of postoperative complications, especially pulmonary and cognitive disorders. Objective: This study aimed at comparing the impact of two different physiotherapy treatment approaches on pulmonary and cognitive function of patients undergoing CABG. Methods: Neuropsychological and pulmonary function tests were applied, prior to and following CABG, to 39 patients randomized into two groups as follows: Group 1 (control) - 20 patients underwent one physiotherapy session daily; and Group 2 (intensive physiotherapy) - 19 patients underwent three physiotherapy sessions daily during the recovery phase at the hospital. Non-paired and paired Student t tests were used to compare continuous variables. Variables without normal distribution were compared between groups by using Mann-Whitney test, and, within the same group at different times, by using Wilcoxon test. The chi-square test assessed differences of categorical variables. Statistical tests with a p value ≤ 0.05 were considered significant. Results: Changes in pulmonary function were not significantly different between the groups. However, while Group 2 patients showed no decline in their neurocognitive function, Group 1 patients showed a decline in their cognitive functions (P ≤ 0.01). Conclusion: Those results highlight the importance of physiotherapy after CABG and support the implementation of multiple sessions per day, providing patients with better psychosocial conditions and less morbidity.Fundamento: A cirurgia de revascularização miocárdica (CRM) é a opção cirúrgica padrão para pacientes com placas arteriais difusas e significativas. Tal procedimento, no entanto, não é desprovido de complicações pós-operatórias, especialmente distúrbios pulmonares e cognitivos. Objetivo: Comparar o impacto de duas abordagens fisioterap

  20. Time sequence spectroscopy of AW UMa. The 518 nm Mg I triplet region analyzed with broadening functions

    SciTech Connect

    Rucinski, Slavek M.

    2015-02-01

    High-resolution spectroscopic observations of AW UMa, obtained on three consecutive nights with a median time resolution of 2.1 minutes, have been analyzed using the broadening function method in the spectral window of 22.75 nm around the 518 nm Mg i triplet region. Doppler images of the system reveal the presence of vigorous mass motions within the binary system; their presence puts into question the solid-body rotation assumption of the contact binary model. AW UMa appears to be a very tight, semi-detached binary; the mass transfer takes place from the more massive to the less massive component. The primary, a fast-rotating star with Vsini=181.4±2.5 km s{sup −1}, is covered with inhomogeneities: very slowly drifting spots and a dense network of ripples more closely participating in its rotation. The spectral lines of the primary show an additional broadening component (called the “pedestal”) that originates either in the equatorial regions, which rotate faster than the rest of the star by about 50 km s{sup −1}, or in an external disk-like structure. The secondary component appears to be smaller than predicted by the contact model. The radial velocity field around the secondary is dominated by accretion of matter transferred from (and possibly partly returned to) the primary component. The parameters of the binary are Asini=2.73±0.11 R{sub ⊙} and M{sub 1}sin{sup 3}i=1.29±0.15 M{sub ⊙}, M{sub 2}sin{sup 3}i=0.128±0.016 M{sub ⊙}. The mass ratio, q{sub sp}=M{sub 2}/M{sub 1}=0.099±0.003, while still the most uncertain among the spectroscopic elements, is substantially different from the previous numerous and mutually consistent photometric investigations which were based on the contact model. It should be studied why photometry and spectroscopy give such discrepant results and whether AW UMa is an unusual object or if only very high-quality spectroscopy can reveal the true nature of W UMa-type binaries.

  1. Mass Flux of Tephra Sampled Frequently During the Ongoing Halema`uma`u Eruption (Invited)

    NASA Astrophysics Data System (ADS)

    Swanson, D.; Wooten, K.; Orr, T. R.

    2009-12-01

    The ongoing summit eruption of Kilauea provides an unparalleled opportunity to track, almost daily, the production of tephra. The eruption began on 19 March 2008, and tephra has been erupted every day since then to the end of August 2009. Most of the time, tephra is ejected quasi-continuously from the vent accompanied by a light gray to white gas plume, occasionally broken by a more vigorous pulse (“brown plume”) richer in ejecta. In early April 2008, an array of 10 plastic buckets was placed within 400 m of the new vent in Halema`uma`u down the prevailing NE wind direction. The configuration of the array, spanning an area of about 73,000 m2, has not changed since then. Buckets are emptied frequently, initially every day and, since summer 2008, on all weekdays. The contents are dried and weighed, and an “average network accumulation rate” is calculated in g/m2/hour. In addition, componentry analyses are made of the >0.5-mm size fraction from a bucket near the vent, in order to categorize the tephra into juvenile and lithic fractions. To estimate the total mass of tephra ejected from the vent for a given collection, we first drew isomass contours for several daily collections and plotted isomass versus square root of area to obtain the total mass of the deposit. From this, we developed an empirical multiplication factor that allows us to estimate, within ~25 percent, the total ejected mass per day in kilograms from the total collected mass in grams. The tephra is a mix of vitric and lithic pyroclasts, mostly ash in size. The vitric clasts, interpreted as juvenile, include Pele’s hair and tears, hollow spherules, dumbbells, pumice, and bits of coarsely vesicular glass. All these clasts were probably produced by weak spattering at the top of the lava column, which has rarely been seen. Especially since fall 2008, some vitric clasts are partly coated with secondary minerals or rock dust. We interpret such clasts as recycled, first erupted during spattering

  2. The 2008-2009 Eruption in Halema`uma`u Crater, Kilauea Volcano

    NASA Astrophysics Data System (ADS)

    Kauahikaua, J. P.; Orr, T. R.; Patrick, M. R.; Swanson, D.; Poland, M. P.; Miklius, A.; Wilson, D.; Sutton, A. J.; Elias, T.; Thornber, C. R.; Wooten, K.

    2009-12-01

    Early in the 26th year of Kilauea volcano’s ongoing east rift zone eruption, a distinct increase in activity was detected at Kilauea summit. By February 2008, the southern part of the summit caldera was bathed in high concentrations of SO2 prompting Hawai`i Volcanoes National Park to close public access. A vigorous fuming area at the base of the east wall of Halema`uma`u Crater was noted on March 12, and the first throat-clearing explosion occurred from that location a week later. This, the first explosive eruption of Kilauea's summit since 1924, was followed by 7 more before the first major vent collapse in early December 2008 buried the lava column beneath rubble, extinguished vent glow, and reduced gas emissions. The vent slowly came back to life in early 2009, exhibiting behavior similar to that in 2008, until another major collapse in mid-2009 reburied the vent and again extinguished glow and reduced gas emissions. As of August 2009, glow had returned and gas emissions had increased, a total of 2,200 tonnes of lithic and juvenile tephra had been erupted, and the dimensions of the vent opening in the crater floor increased to 125 x 133 m. Chemical uniformity of magma erupted from the summit and rift zone vents unambiguously demonstrate their direct connection. The low explosive intensity and location of the 2008-9 explosive activity within the heavily monitored and easily accessible summit have allowed a number of near-vent studies. Near-daily ashfall measurements have revealed temporal variations in tephra production and changes in the proportion of juveniles and lithics. Direct views of the lava surface within the vent allowed cross-correlation with seismic and geodetic signals to suggest new interpretations of tremor, infrasound, and tilt data. Near-source emission measurements allowed uniquely full characterization of gas content and associated hazards. Additional hazards posed by the summit activity include near-vent ballistic impacts and low air quality

  3. A New Look at the Eclipse Timing Variation Diagram Analysis of Selected 3-body W UMa Systems

    NASA Astrophysics Data System (ADS)

    Christopoulou, P.-E.; Papageorgiou, A.

    2015-07-01

    The light travel effect produced by the presence of tertiary components can reveal much about the origin and evolution of over-contact binaries. Monitoring of W UMa systems over the last decade and/or the use of publicly available photometric surveys (NSVS, ASAS, etc.) has uncovered or suggested the presence of many unseen companions, which calls for an in-depth investigation of the parameters derived from cyclic period variations in order to confirm or reject the assumption of hidden companion(s). Progress in the analysis of eclipse timing variations is summarized here both from the empirical and the theoretical points of view, and a more extensive investigation of the proposed orbital parameters of third bodies is proposed. The code we have developed for this, implemented in Python, is set up to handle heuristic scanning with parameter perturbation in parameter space, and to establish realistic uncertainties from the least squares fitting. A computational example is given for TZ Boo, a W UMa system with a spectroscopically detected third component. Future options to be implemented include MCMC and bootstrapping.

  4. Comparing the precision 2009 and 2012 light curves of the precontact W UMa binary V1001 Cassiopeia

    SciTech Connect

    Samec, R. G.; Koenke, S. S.; Faulkner, D. R.

    2015-01-01

    A 2012 follow up to the analysis of 2009 observations is presented for the very short period (∼0.43 days) precontact W UMa binary (PCWB) V1001 Cassiopeia. Its short period, similar to the majority of W UMa binaries, and its distinct EA light curve make it a very rare and interesting system for continuing photometric investigation. Previous photometric VRI standard magnitudes give a K4 spectral type. Our solutions of light curves separated by some three years give approximately the same physical parameters. However, the spots have radically changed in temperature, area, and position. While only one dark spot was used to model the first curves, two hot spots are now needed. This affects the overall shape of the light curve, especially in the secondary eclipses in B and V. Additional eclipse timings now show that the orbital period is changing. We conclude that spots are very active on this solar-type dwarf system and that it may mimic its larger cousins, the RS CVn binaries. The conclusion is that analysis now needs to be directed at the continuous time evolution of PCWBs.

  5. Light curve solutions of six eclipsing binaries at the lower limit of periods for W UMa stars

    NASA Astrophysics Data System (ADS)

    Kjurkchieva, Diana P.; Dimitrov, Dinko P.; Ibryamov, Sunay I.

    2015-09-01

    Photometric observations are presented in V and I bands of six eclipsing binaries at the lower limit of the orbital periods for W UMa stars. Three of them are newly discovered eclipsing systems. The light curve solutions reveal that all short-period targets are contact or overcontact binaries and six new binaries are added to the family of short-period systems with estimated parameters. Four binaries have components that are equal in size and a mass ratio near 1. The phase variability shown by the V-I colors of all targets may be explained by lower temperatures on their back surfaces than those on their side surfaces. Five systems exhibit the O'Connell effect that can be modeled by cool spots on the side surfaces of their primary components. The light curves of V1067 Her in 2011 and 2012 are fitted by diametrically opposite spots. Applying the criteria for subdivision of W UMa stars to our targets leads to ambiguous results.

  6. Observations and light curve solutions of the eclipsing W UMa binaries CSS J071813.2+505000, NSVS 2459652, NSVS 7178717 and NSVS 7377875

    NASA Astrophysics Data System (ADS)

    Kjurkchieva, D. P.; Popov, V. A.; Vasileva, D. L.; Petrov, N. I.

    2017-04-01

    Photometric observations in Sloan g' and i' bands of four eclipsing W UMa binaries are presented. They allowed the improvement of system ephemerides. The light curve solutions led to the following results: (i) CSS J071813.2+505000 is barely an overcontact system, NSVS 2459652 and NSVS 7377875 are overcontact binaries with an intermediate fillout factor, while NSVS 7178717 has a deep-contact configuration; (ii) NSVS 7178717 undergoes total eclipses while the other three targets exhibit partial eclipses; (iii) The components of each target are almost the same in temperature: those of CSS J071813.2+505000 are early G stars while those of the other three targets are of K spectral type; (iv) The targets with late components reveal spot activity; (v) NSVS 2459652 and NSVS 7377875 are W UMa binaries of H subtype; (vi) The relation mass ratio - luminosity ratio of our targets confirms the results from previous statistical analysis of W UMa systems.

  7. Propriedades de estruturas temporais rápidas submilimétricas durante uma grande explosão solar

    NASA Astrophysics Data System (ADS)

    Raulin, J.-P.; Kaufmann, P.; Gimenez de Castro, C. G.; Pacini, A. A.; Makhmutov, V.; Levato, H.; Rovira, M.

    2003-08-01

    Apresentamos novas propriedades de variações rápidas da emissão submilimétrica durante uma das maiores explosões solares do ciclo solar 23. Os dados analisados neste estudo foram obtidos com o Telescópio Solar Submilimétrico (SST), que observa o Sol em 212 GHz e 405 GHz, e comparados com emissões em Raios-X duros e Raios-gama (fótons de energia > 10 MeV), que foram obtidas pelo experimento GRS do Yohkoh. Aplicamos diferentes metodologias para detectar e caracterizar, ao longo do evento, os pulsos submilimétricos (duração de 50-300 ms) detectados acima de uma componente mais lenta (alguns minutos). Os resultados mostram que durante a fase impulsiva, num instante próximo ao tempo do máximo do evento, houve um aumento da ocorrência de maiores e de mais rápidas estruturas temporais. Também identificamos uma boa correlação com as emissões em raios-X e raios-gama (até a faixa de energia 10-100 MeV), indicando que os pulsos rápidos submilimétricos refletiram injeções primárias de energia durante o evento.O espectro do fluxo desses pulsos é crescente com a freqüência entre 212 and 405 GHz, na maioria dos casos, ao contrário do observado para a componente gradual. As posições calculadas para as estruturas rápidas são discretas, compactas e localizadas em toda a área da região ativa, o que é previsto nos modelos de explosões solares decorrentes de instabilidades múltiplas em diferentes pequenas regiões. Por outro lado, a posição calculada para a componente lenta é estável durante a fase impulsiva. Assim, a comparação entre as características do espectro de fluxo e da localização da emissão, para os pulsos rápidos e para a componente gradual, sugere que as respectivas emissões são de natureza diferente.

  8. The first confirmed superoutburst of the SU UMa-type dwarf nova SDSS J083931.35+282824.0

    NASA Astrophysics Data System (ADS)

    Shears, J.; de Miguel, E.; Roberts, G.; Collins, D. F..; Myers, G.; Campbell, T.

    2011-12-01

    We report unfiltered CCD photometry of the first confirmed superoutburst in 2010 April of the recently discovered dwarf nova SDSS J083931.35+282824.0. From a quiescence magnitude of ~19.8 it rose to 14.0, an outburst amplitude of at least 5.8 magnitudes. Only the plateau phase of the outburst was observed, during which superhumps with peak-to-peak amplitude of up to 0.28 magnitudes were present, confirming this to be an SU UMa-type dwarf nova. The mean superhump period was Psh= 0.07836(2) during the first 3 days and this subsequently decreased to 0.07800(3)d. Analysis of the data revealed tentative evidence for an orbital period Porb= 0.07531(25)d. The fractional superhump period excess was e= 0.039(6), which is consistent with other dwarf novae of similar orbital period.

  9. Peculiarities of the SU UMa-Type Dwarf Nova V1504 Cyg Behavior in 1994 - 2012 Years

    NASA Astrophysics Data System (ADS)

    Antonyuk, O. I.; Pavlenko, E. P.

    2013-12-01

    For the SU UMa-type dwarf nova V1504 Cyg on the data base of the CrAO (1998 - 2009), space telescope "Kepler" (2009 - 2011), AAVSO and VSNET (1994 - 2012) we found as follows: 1) the supercycle length varying in average from 100 to 140 d; 2) the normal outbursts show a bimodal cycles lengths distributions with centers 8 - 9 days and 11 days within the range of 5 - 22 days; 3) for the quiescent data JD 2451737-2451745 we have detected the 0.0677-d periodicity that probably connected to the negative superhumps, and for the JD 245497 - 2454974 - these consisting either with simultaneous existing of positive and negative superhumps or with one of these periods.

  10. BVR{sub c}I{sub c} observations and analyses on V2421 Cygni, a precontact W UMa binary

    SciTech Connect

    Samec, R. G.; Shebs, Travis S.; Faulkner, D. R.; Van Hamme, W.; Mathis, R. F.

    2014-01-01

    We present the first precision BVRI light curves, synthetic light curve solutions, and a period study for the high amplitude solar type binary, V2421 Cygni. The light curves have the appearance of an Algol (EA) type; however, it is made up of dwarf solar type components in a detached mode with a period of only 0.6331 days with an amplitude of about a full magnitude, i.e., it is a precontact W UMa binary. Flare-like disruptions occur in the light curves following the primary and secondary eclipses possibly due to the line-of-sight track of a gas stream. An associated stream spot and splash spot cause bright equatorial spots on the stellar surface of the primary star. The more massive star is the gainer, making this system a classic, albeit dwarf, Algol.

  11. CSS090530:144011+494734: a new SU UMa-type dwarf nova in Boötes

    NASA Astrophysics Data System (ADS)

    Boyd, D.; Dunckel, N.; Foote, J.; Miller, I.

    2010-08-01

    We report photometry and analysis of a previously unknown SU UMa-type dwarf nova in Boötes detected in outburst by the Catalina Real-time Transient Survey on 2009 May 30, with the discovery identifier CSS090530:144011+494734. This apparently stellar object had previously been catalogued by the Sloan Digital Sky Survey as SDSS J144011.01+494733.4. We measured its mean superhump period over the first 3 days following detection as 0.06500(4)d, at which point this changed to 0.06438(3)d. We detected a possible orbital period of 0.06322(8)d implying a mean superhump period excess of 0.020(2). After detection, the dwarf nova maintained steady brightness for 5 days before starting to fade. The outburst amplitude was 5.5 magnitudes above its quiescent level.

  12. Survey of period variations of superhumps in SU UMa-type dwarf novae. VIII. The eighth year (2015-2016)

    NASA Astrophysics Data System (ADS)

    Kato, Taichi; Hambsch, Franz-Josef; Monard, Berto; Vanmunster, Tonny; Maeda, Yutaka; Miller, Ian; Itoh, Hiroshi; Kiyota, Seiichiro; Isogai, Keisuke; Kimura, Mariko; Imada, Akira; Tordai, Tamás; Akazawa, Hidehiko; Tanabe, Kenji; Otani, Noritoshi; Ogi, Minako; Ando, Kazuko; Takigawa, Naoki; Dubovsky, Pavol A.; Kudzej, Igor; Shugarov, Sergey Yu.; Katysheva, Natalia; Golysheva, Polina; Gladilina, Natalia; Chochol, Drahomir; Starr, Peter; Kasai, Kiyoshi; Pickard, Roger D.; Miguel, Enrique de; Kojiguchi, Naoto; Sugiura, Yuki; Fukushima, Daiki; Yamada, Eiji; Uto, Yusuke; Kamibetsunawa, Taku; Tatsumi, Taiki; Takeda, Nao; Matsumoto, Katsura; Cook, Lewis M.; Pavlenko, Elena P.; Babina, Julia V.; Pit, Nikolaj V.; Antonyuk, Oksana I.; Antonyuk, Kirill A.; Sosnovskij, Aleksei A.; Baklanov, Aleksei V.; Kafka, Stella; Stein, William; Voloshina, Irina B.; Ruiz, Javier; Sabo, Richard; Dvorak, Shawn; Stone, Geoff; Andreev, Maksim V.; Antipin, Sergey V.; Zubareva, Alexandra M.; Zaostrojnykh, Anna M.; Richmond, Michael; Shears, Jeremy; Dubois, Franky; Logie, Ludwig; Rau, Steve; Vanaverbeke, Siegfried; Simon, Andrei; Oksanen, Arto; Goff, William N.; Bolt, Greg; Dębski, Bartłomiej; Kochanek, Christopher S.; Shappee, Benjamin; Stanek, Krzysztof Z.; Prieto, José L.; Stubbings, Rod; Muyllaert, Eddy; Hiraga, Mitsutaka; Horie, Tsuneo; Schmeer, Patrick; Hirosawa, Kenji

    2016-08-01

    Continuing the project described by Kato et al. (2009, PASJ, 61, S395), we collected times of superhump maxima for 128 SU UMa-type dwarf novae observed mainly during the 2015-2016 season and characterized these objects. The data have improved the distribution of orbital periods, the relation between the orbital period and the variation of superhumps, and the relation between period variations and the rebrightening type in WZ Sge-type objects. Coupled with new measurements of mass ratios using growing stages of superhumps, we now have a clearer and statistically greatly improved evolutionary path near the terminal stage of evolution of cataclysmic variables. Three objects (V452 Cas, KK Tel, and ASASSN-15cl) appear to have slowly growing superhumps, which is proposed to reflect the slow growth of the 3 : 1 resonance near the stability border. ASASSN-15sl, ASASSN-15ux, SDSS J074859.55+312512.6, and CRTS J200331.3-284941 are newly identified eclipsing SU UMa-type (or WZ Sge-type) dwarf novae. ASASSN-15cy has a short (˜0.050 d) superhump period and appears to belong to EI Psc-type objects with compact secondaries having an evolved core. ASASSN-15gn, ASASSN-15hn, ASASSN-15kh, and ASASSN-16bu are candidate period bouncers with superhump periods longer than 0.06 d. We have newly obtained superhump periods for 79 objects and 13 orbital periods, including periods from early superhumps. In order that future observations will be more astrophysically beneficial and rewarding to observers, we propose guidelines on how to organize observations of various superoutbursts.

  13. Radiological (scintigraphic) evaluation of patients with suspected pulmonar thromboembolism

    SciTech Connect

    Biello, D.R.

    1987-06-19

    The optimal strategy for diagnostic evaluation of patients with suspected pulmonary thromboembolism (PE) is subject of controversial and often conflicting opinions. If untreated, as many as 30% of patients with PE may die. Conversely, anticoagulant therapy significantly decreases mortality from PE, but bleeding complications occur. Underdiagnosis may result in a preventable death, and overdiagnosis may lead to significant hemorrhage from unnecessary anticoagulant therapy. This article outlines a practical guide for the use of pulmonary ventilation-perfusion (V-P) scintigraphy in patients with suspected PE. Perfusion imaging involves the intravenous injection of radiolabeled particles ranging from 10 to 60 ..mu..m in diameter (technetium Tc 99m macroaggregated albumin or technetium Tc 99m serum albumin microspheres); these particles are trapped in the capillaries and precapillary arterioles of the lung. The radiolabeled particles are distributed to the lungs in proportion to regional pulmonary blood flow. The correspondence of perfusion defects to bronchopulmonary segments is best appreciated in the posterior oblique views.

  14. Pulmonar collision tumor: metastatic adenoid cystic carcinoma and lung adenocarcinoma.

    PubMed

    Blanco, M; García-Fontán, E; Ríos, J; Rivo, J E; Fernández-Martín, R; Cañizares, M A

    2012-01-01

    We report an extraordinary case of collision tumor consisting of a lung adenocarcinoma and a metastatic adenoid cystic carcinoma in a 56 year-old man. He was diagnosed with a pulmonary nodule 11 years after treatment of an adenoid cystic carcinoma of the right maxillary sinus. A non-small cell carcinoma was observed when a transbronchial biopsy was performed. The other component of the nodule was only diagnosed with pathological examination of the resection specimen.

  15. VizieR Online Data Catalog: TU UMa light curves and maxima, CL Aur minima (Liska+, 2016)

    NASA Astrophysics Data System (ADS)

    Liska, J.; Skarka, M.; Mikulasek, Z.; Zejda, M.; Chrastina, M.

    2016-02-01

    Differential photometry for RR Lyrae star TU UMa in the 1st and 2nd file. The measurements were obtained using 24-inch and 1-inch telescopes, respectively. The observations were performed at the Masaryk University Observatory in Brno (3 nights, 24-inch), and at the private observatory in Brno (16 nights, 1-inch) in the Czech Republic from December 2013 to June 2014. Observing equipments consisted of 24-inch Newtonian telescope (600/2780mm, diameter/focal length) and a Moravian Instruments CCD camera G2-4000 with Stromgren photometric filters vby, and of 1-inch refractor (a photographic lens Sonnar 4/135mm, lens focal ratio/focal length) and ATIK 16IC CCD camera with green photometric filter with similar throughput as the Johnson V filter. Exposures were v - 60s, b - 30s, y - 30s, green - 30s. For the small aperture telescope, five frames were combined to a single image to achieve a better signal-to-noise ratio. The time resolution of a such combined frame is about 170s. CCD images were calibrated in a standard way (dark frame and flat field corrections). The C-Munipack software (Motl 2009) was used for this processing as well as for differential photometry. The comparison star BD+30 2165 was the same for both instruments, but the control stars were BD+30 2164 (for the 24-inch telescope) and HD 99593 (for the 1-inch telescope). The 3rd file contains maxima timings of TU UMa adopted from the GEOS RR Lyr database, from the latest publications, together with maxima timings determined in our study. Times of maxima were calculated from our observations, sky-surveys data (Hipparcos, NSVS, Pi of the Sky, SuperWASP), photographic measurements (project DASCH), and from several published datasets, in which the maxima were omitted or badly determined - Boenigk (1958AcA.....8...13B), Liakos, Niarchos (2011IBVS.6099....1L, 2011IBVS.5990....1L), Liu, Janes (1989ApJS...69..593L), Preston et al. (1961ApJ...133..484P). The 4th file contains minima timings of eclipsing binary CL Aur

  16. Imagens do céu ontem e hoje - um multimídia interativo de astronomia e uma nova exposição no MAST

    NASA Astrophysics Data System (ADS)

    Caretta, C. A.; Lima, F. P.; Requeijo, F.; Vieira, G. G.; Alves, F.; Valente, M. E. A.; de Almeida, R.; de Garcia, G. C.; Quixadá, A. C.

    2003-08-01

    "Imagens do Céu Ontem e Hoje" é o título de uma nova exposição que está sendo inaugurada no Museu de Astronomia e Ciências Afins (MCT), que inclui experimentos interativos, maquetes, réplicas e 8 terminais de computador com um multimídia interativo sobre Astronomia para consulta dos visitantes. O multimídia apresenta um conteúdo bastante extenso, que engloba quase todos os temas em Astronomia, consistindo numa fonte de divulgação e pesquisa para um público que vai das crianças até estudantes universitários. O conteúdo está distribuído em mais de 500 páginas de texto divididas em 4 módulos: "O Universo", "Espectroscopia", "Telescópios" e "Observando o Céu". Cada módulo é subdividido em 5 seções, em média, cada uma iniciada por uma animação que ilustra os temas a serem abordados na seção. Ao final da animação, uma lista de temas é apresentada sob o título "Saiba Mais". Para exemplificar, o módulo "O Universo" contém as seguintes seções: "O Universo visto pelo homem", "Conhecendo o Sistema Solar", "Indo além do Sistema Solar", "Nossa Galáxia, a Via-Láctea" e "Indo mais além, a imensidão do Universo". A seção "Conhecendo o Sistema Solar", por sua vez, tem os seguintes temas: "A origem do Sistema Solar", "O Sol", "Os planetas", "Satélites, asteróides, cometas e outros bichos..." e "O Sistema Solar em números". Cada texto é repleto de imagens, quadros, desenhos, esquemas, etc, além de passatempos ao final de cada seção, incluindo jogos interativos, quadrinhos e curiosidades, que auxiliam o aprendizado de forma divertida. Apresentamos neste trabalho as idéias gerais que permearam a produção da exposição, e uma viagem pelo multimídia para exemplificar sua estrutura e conteúdo. O multimídia será posteriormente disponibilizado para o público externo pela página eletrônica do MAst e/ou por intermédio de uma publicação comercial.

  17. THE GEOMETRY AND IONIZATION STRUCTURE OF THE WIND IN THE ECLIPSING NOVA-LIKE VARIABLES RW TRI AND UX UMa

    SciTech Connect

    Noebauer, Ulrich M.; Long, Knox S.; Sim, Stuart A.; Knigge, Christian

    2010-08-20

    The UV spectra of nova-like variables are dominated by emission from the accretion disk, modified by scattering in a wind emanating from the disk. Here, we model the spectra of RW Tri and UX UMa, the only two eclipsing nova-like variables which have been observed with the Hubble Space Telescope in the far-ultraviolet, in an attempt to constrain the geometry and the ionization structure of their winds. Using our Monte Carlo radiative transfer code, we computed spectra for simply parameterized axisymmetric biconical outflow models and were able to find plausible models for both systems. These reproduce the primary UV resonance lines-N V, Si IV, and C IV-in the observed spectra in and out of eclipse. The distribution of these ions in the wind models is similar in both cases as is the extent of the primary scattering regions in which these lines are formed. The inferred mass-loss rates are 6%-8% of the mass accretion rates for the systems. We discuss the implication of our point models for our understanding of accretion disk winds in cataclysmic variables.

  18. Absolute parameter determination in low-mass eclipsing binaries - Radiative parameters for BH Vir, ZZ UMA and CR CAS

    NASA Astrophysics Data System (ADS)

    Clement, R.; Reglero, V.; Garcia, M.; Fabregat, J.; Bravo, A.; Suso, J.

    1993-01-01

    A new uvby and H-beta monitoring program of low mass eclipsing binaries is currently being carried out in the framework of a 5-yr observational program which also involves radial velocity determinations. The scope of this work is to provide very accurate absolute astrophysical parameters: mass, radius, and effective temperatures, for main-sequence late-type stars. One of the main goals is to improve the mass-luminosity relation in the low and intermediate mass range. A second objective is to perform accurate tests of the most recent grids of evolutionary models. This program is complementary to that currently being implemented by the Copenhagen group. In this contribution we present the photometric preliminary results obtained for three of the systems included in our long-term survey: BH Vir, ZZ UMa, and CR Cas for which primary eclipses have been observed. Particular attention is paid to the determination of reddening, distances, and radiative properties. A more detailed study will be carried out when the light curves and radial velocity measurements are completed.

  19. The first photometric investigation and orbital period variation analysis of the W UMa type binary IK Bootis

    NASA Astrophysics Data System (ADS)

    Kriwattanawong, Wichean; Sanguansak, Nuanwan; Maungkorn, Sakdawoot

    2017-08-01

    With new CCD observations of the W UMa type binary IK Boo, we present the first investigation of photometric parameters and orbital period change. The BVRc light curve fit shows that IK Boo is a W-type contact system with a mass ratio of q = 1.146 and a shallow contact with a fill-out factor of f = 2.22%. The orbital period decrease was found to be a rate of -3.28 × 10-7 d yr-1, corresponding to a mass transfer from the more massive to the less massive component with a rate of -2.83 × 10-6 M⊙ yr-1. The inner and outer critical Roche lobes will contract and cause the contact degree to increase. Therefore, IK Boo may evolve into a deeper contact system. Furthermore, a possible cyclic variation was found with a period of 9.74 yr, which could be explained by the light-travel time effect due to the existence of a third companion in the system.

  20. Optimization of Physiochemical Parameters during Bioremediation of Synthetic Dye by Marasmius cladophyllus UMAS MS8 Using Statistical Approach

    PubMed Central

    Shuib, Fatin Nur Sufinas

    2016-01-01

    In many industrial areas such as in food, pharmaceutical, cosmetic, printing, and textile, the use of synthetic dyes has been integral with products such as azo dye, anthrax, and dyestuffs. As such, these industries produce a lot of waste by-products that could contaminate the environment. Bioremediation, therefore, has become an important emerging technology due to its cost-sustainable, effective, natural approach to cleaning up contaminated groundwater and soil via the use of microorganisms. The use of microorganisms in bioremediation requires the optimisation of parameters used in cultivating the organism. Thus the aim of the work was to assess the degradation of Remazol Brilliant Blue R (RBBR) dye on soil using Plackett-Burman design by the basidiomycete, M. cladophyllus UMAS MS8. Biodegradation analyses were carried out on a soil spiked with RBBR and supplemented with rice husk as the fungus growth enhancer. A two-level Plackett-Burman design was used to screen the medium components for the effects on the decolourization of RBBR. For the analysis, eleven variables were selected and from these four parameters, dye concentration, yeast extract concentration, inoculum size, and incubation time, were found to be most effective to degrade RBBR with up to 91% RBBR removal in soil after 15 days. PMID:27803944

  1. ASCA Observation of a Long-Duration X-Ray Flare from the W UMa--Type Binary VW Cephei

    NASA Astrophysics Data System (ADS)

    Choi, C. S.; Dotani, T.

    1998-01-01

    We analyze X-ray archive data of the W UMa-type binary VW Cephei taken with ASCA on 1993 November 5-6. By analyzing the light curve, we find a long-duration flare of ~7.5 hr with a peak luminosity of 1.2 × 1030 ergs s-1 (0.4-3.0 keV) for the assumed distance of 23.2 pc. A flux dip is detected in the light curve at the orbital phase of ~0.5, and it is identified as an eclipse by the secondary star. We determine the timescale of the eclipse egress to be ~30 minutes from a model fit to the light curve. With this timescale, we estimate that the linear size of the flaring region is ~5.5 × 1010 cm, regardless of the flare models. From the spectral analysis of the data, we find that the spectrum can be well reproduced by the variable-abundance plasma model with a combination of two different temperatures, kT = 0.64 and kT = 1.91 keV. The hotter component is considered to be associated with the flare. The results are interpreted in terms of a two-ribbon flare model, in which we also discuss the possible enhancement of element abundances.

  2. Speciation, population structure, and demographic history of the Mojave Fringe-toed Lizard (Uma scoparia), a species of conservation concern

    PubMed Central

    Gottscho, Andrew D; Marks, Sharyn B; Jennings, W Bryan

    2014-01-01

    The North American deserts were impacted by both Neogene plate tectonics and Quaternary climatic fluctuations, yet it remains unclear how these events influenced speciation in this region. We tested published hypotheses regarding the timing and mode of speciation, population structure, and demographic history of the Mojave Fringe-toed Lizard (Uma scoparia), a sand dune specialist endemic to the Mojave Desert of California and Arizona. We sampled 109 individual lizards representing 22 insular dune localities, obtained DNA sequences for 14 nuclear loci, and found that U. scoparia has low genetic diversity relative to the U. notata species complex, comparable to that of chimpanzees and southern elephant seals. Analyses of genotypes using Bayesian clustering algorithms did not identify discrete populations within U. scoparia. Using isolation-with-migration (IM) models and a novel coalescent-based hypothesis testing approach, we estimated that U. scoparia diverged from U. notata in the Pleistocene epoch. The likelihood ratio test and the Akaike Information Criterion consistently rejected nested speciation models that included parameters for migration and population growth of U. scoparia. We reject the Neogene vicariance hypothesis for the speciation of U. scoparia and define this species as a single evolutionarily significant unit for conservation purposes. PMID:25360285

  3. First BVR light curves and preliminary results of a recently discovered W UMa-type binary: V1848 Ori

    NASA Astrophysics Data System (ADS)

    Kriwattanawong, W.; Poojon, P.

    2014-04-01

    First complete photometric light curves of a recently discovered contact binary, V1848 Ori, are presented. BVR imaging data were used to derive photometric solutions, using Wilson-Devinney code. We discovered that this system is a weak-contact binary, with a fillout factor of f = 13.14%(±1.44%). Preliminary results showed that V1848 Ori is an A-type W UMa system, with a mass ratio of q = 0.7615. The more massive component was found about 400 K hotter than the other one. This system has varied from W-type to A-type during the last decade. According to the preliminary physical parameters, the weak-contact configuration of this system, with the mass ratio close to unity, and no sign of long-term orbital period change yet, is unlikely to be broken. The contact configuration is expected to be maintained and become deeper or not, depending on effect of the AML mechanism.

  4. VRI photometry and light curve analysis of short period W UMa-Type 1SWASP J222514.69 + 361643.0

    NASA Astrophysics Data System (ADS)

    El-Depsey, M. H.; Abo-Alazm, M. S.; Saad, M. S.; Hassan, I. A.; Shaltout, A. M. K.; Zeid, I.; Shokry, A.; Darwish, M.

    2017-10-01

    We present the first light curve analysis and modeling for the short period close binary 1SWASP J222514.69 + 361643.0. The results show that the system is in over contact with factor ƒ = 53%. The primary component is the massive and hotter one. The system is A-subtype W UMa eclipsing binary with spectral types K2 and K3, respectively.

  5. [Epidemiology of bilio-pancreatic cancer in Specialty Hospital UMAE N°71 IMSS in Torreón, Coahuil].

    PubMed

    Güitrón-Cantú, A; Adalid-Martínez, R; Segura-López, Fk

    2011-01-01

    There is a worldwide increase in the incidence of cancer of the biliopancreatic ducts; early diagnosis is difficult and prognosis is poor. To analyze the frequency of malignant biliary strictures diagnosed by Endoscopio Retrograde Cholangiopancreatography (ERCP) at the "Hospital de Especialidades No. 71 UMAE IMSS", Torreon, Coahuila, Mexico. A 5-year retrospective study of consecutive patients referred for ERCP at our institution was performed. Medical records from patients with malignant neoplasms were reviewed. Demographic variables, post-ERCP and final diagnosis, based on cytological and endoscopic or surgical biopsies, imaging studies and clinical outcome were registered. The frequency of biliary-pancreatic neoplasm was 15.6% (301 cases in 1924 ERCP) determined by bile duct cancer (40.7%), pancreas (27.9%) and Vater´s ampulla (12.3%). Brushing was performed for histopathological analysis in 86.7% of cases. The cytology was positive in 91.2%, negative 8.8%, and it was no possible in 13.3% of cases. Therapeutic endoscopy was performed in 273 patients with complications in 1.3% and no procedure-related mortality. Patients with malignant strictures had a higher risk for unsuccessful ERCP (RR 3.01, 95% CI 1.77 - 5.11) and carrying out pre-cut sphincterotomy (RR 1.80, 95% CI 1.38 - 2.35). In our center the incidence of biliary-pancreatic neoplasm was 15.6% among patients sent to ERCP and its presence increases the degree of difficulty in performing diagnostic and therapeutic endoscopic procedures.

  6. Environmental differences in substrate mechanics do not affect sprinting performance in sand lizards (Uma scoparia and Callisaurus draconoides).

    PubMed

    Korff, Wyatt L; McHenry, Matthew J

    2011-01-01

    Running performance depends on a mechanical interaction between the feet of an animal and the substrate. This interaction may differ between two species of sand lizard from the Mojave Desert that have different locomotor morphologies and habitat distributions. Uma scorparia possesses toe fringes and inhabits dunes, whereas the closely related Callisaurus draconoides lacks fringes and is found on dune and wash habitats. The present study evaluated whether these distribution patterns are related to differential locomotor performance on the fine sand of the dunes and the course sand of the wash habitat. We measured the kinematics of sprinting and characterized differences in grain size distribution and surface strength of the soil in both habitats. Although wash sand had a surface strength (15.4±6.2 kPa) that was more than three times that of dune sand (4.7±2.1 kPa), both species ran with similar sprinting performance on the two types of soil. The broadly distributed C. draconoides ran with a slightly (22%) faster maximum speed (2.2±0.2 m s(-1)) than the dune-dwelling U. scorparia (1.8±0.2 m s(-1)) on dune sand, but not on wash sand. Furthermore, there were no significant differences in maximum acceleration or the time to attain maximum speed between species or between substrates. These results suggest that differences in habitat distribution between these species are not related to locomotor performance and that sprinting ability is dominated neither by environmental differences in substrate nor the presence of toe fringes.

  7. BVRI Photometric Study of the Short Period Solar Type Near-Contact W UMa Binary, FF Vulpeculae

    NASA Astrophysics Data System (ADS)

    Caton, Daniel B.; Samec, Ronald G.; Nyaude, Ropafadzo; Van Hamme, Walter V.

    2016-01-01

    High precision BVRcIc light curves of FF Vul were observed during the Fall, 2015 season at the Dark Sky Observatory 0.81-m reflector of Appalachian State University, and the SARA North 0.91-m reflector at KPNO. It is an eclipsing binary with a period of only 0.444983 (2) d. This is the shortest period of our recently studied Pre Contact W UMa Binary (PCWB's), V2421 Cyg, V1043 Cas, ZZ Eri, V500 Peg, and Mis V1287. Our Binary Maker fits and our Wilson-Devinney solution show that the binary is a near-contact, semidetached binary, i.e., a V1010 Oph type configuration (the more massive component has filled its critical lobe while the secondary component is under-filling). Five times of minimum light were calculated, 3 primary and 2 secondary eclipses from our present observations:HJD I = 2457285.7262 ±0.0002, 2457306.6425 ±0.0002, 2457310.6469 ±0.0002HJD II = 2457279.7222 ±0.0006, 2457280.6124 ±0.0017.The following quadratic ephemerides was determined from all available times of minimum light:JDHelMinI=2457310.6473±0.0007d + 0.4449758±0.0000002 X E -0.00000000006± 0.00000000001 X E2The continuous 20 year period study reveals a period decrease in the orbital period at about the 6 sigma level. Our modeling shows a near-equatorial hot spot on the following side of the secondary component. This is probably due to a matter transfer onto the secondary component. The light curve has a large difference in primary and secondary amplitudes and the light curve solution gives a component temperature difference of more than 1500 K. The solution shows a total secondary eclipse of 23 minutes duration. As expected in binaries of this type, it has a cool spot region on its primary component.

  8. Uma comparação entre técnicas de propagação de erros em astrofísica: Monte Carlo x Bootstrap

    NASA Astrophysics Data System (ADS)

    Waelkens, A. H.; Janot Pacheco, E.

    2003-08-01

    Recentemente Dhillon & Watson (2001) criticaram o procedimento de determinação de erros via simulações de Monte Carlo no caso do imageamento indireto de estrelas, por introduzir ruído nos dados e resultar em erros superestimados. Estes autores propuseram a utilização alternativa do método de Bootstrap como uma técnica superior para a estimativa de erros. Neste trabalho apresentamos os resultados de um estudo comparativo da performance das técnicas de simulação por Monte Carlo e por Bootstrap para a determinação de erros em duas situações de interesse: (i) ajuste de modelos a espectros observados e (ii) imageamento indireto de discos de acréscimo com técnicas de mapeamento por eclipse. No caso (i), os dados de entrada são espectros de emissão simples de hidrogênio aos quais é adicionado ruído gaussiano de amplitude selecionada. No caso (ii), são produzidas curvas de luz do eclipse de uma distribuição de brilho seguindo a lei TµR-3/4 para discos estacionários cuja taxa de acréscimo varia ao longo do eclipse segundo uma distribuição gaussiana de amplitude selecionada, simulando o ruído. A avaliação da performance é feita com o auxílio de um diagrama do erro relativo na grandeza ajustada, conforme obtido por cada método, versus o erro relativo (ruído/sinal) dos dados de entrada. O estudo mostra que as duas técnicas produzem resultados semelhantes nos dois casos, e que a suposta superioridade do método de Bootstrap não se confirma.

  9. Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur

    NASA Astrophysics Data System (ADS)

    Luo, Xia; Wang, Kun; Zhang, Xiaobin; Deng, Licai; Luo, Yangping; Luo, Changqing

    2017-09-01

    New photometric observations of a W UMa system, V410 Aur, were carried out over 10 nights from 2014 December 19 to 2015 February 8, from which four sets of light curves were obtained. The light curves show many unusual behavioral features, including changing occultation depths, transit minima, and asymmetric maxima. The four sets of light curves have been separately analyzed with the Wilson-Devinney method. The results suggest a totally eclipsing contact configuration for the system. Over a surprisingly short time span of only 52 days, the dominant spot distortion phase jumped twice between phases 0.0 and 0.5. The light-curve variations can be interpreted by the presence of two cool spots on the massive component. Based on our analysis, it is further suggested that the peculiar behavioral patterns are probably caused by the presence of two permanent, active large spots separated in longitude by about 180°, whose locations remain almost unchanged throughout. Our study demonstrates that the system has been undergoing typical flip-flop activity. We therefore conclude that V410 Aur is a W UMa-type system exhibiting flip-flop activity.

  10. Photometric observations and Numerical modeling of SDSS J162520.29+120308.7, an SU UMa in the CV period gap

    NASA Astrophysics Data System (ADS)

    Montgomery, M. M.; Voloshina, I.; Olenick, Richard; Meziere, Kyle; Metlov, Vladimir

    2017-01-01

    We present R-band photometric observations of Cataclysmic Variable dwarf nova SU UMa SDSS J162520.29+120308.7 during the July 2010 superoutburst, from near maximum through decline and into a single rebrightening. We find a maximum superoutburst amplitude of ∼ 6.1 magnitudes and a maximum rebrightening amplitude of ∼4 magnitudes. Near superoutburst maximum, we find 0.09604(3) days for the mean Stage B positive superhump period and a much longer period for the hump shaped modulation during the rebrightening. For the orbital period, we find Porb = 0.09113(30) days. As all periods both agree and disagree with values reported by others, additional observations are needed. Our 2015 observations of this system in quiescence reveal a 0.09080(20) day orbital period. As our 2010 value is within the error bars of a spectroscopically determined value and our 2015 photometrically determined value, we suggest 0.09113(30) days as the orbital period for this system. As for the secondary-to-primary mass ratio, analytical models using observed orbital and Stage B positive superhump periods as input suggest q = 0.221. As a check, we present a 3D SPH simulation of the rise to, and during the plateau stage of, the SU UMa in superoutburst, assuming Porb=0.09113 days. For Stages A and B, we find 0.09717 days and 0.09702 days, respectively, for the average simulated positive superhump periods. Analytical models using these simulated Stages A and B and the simulated orbital period suggest q = 0.1920(4) and q = 0.221, respectively, for this system. Due to the poorly constrained observational data and the similar mass ratio estimates regardless of stage, we can neither confirm nor deny that Stage A is better than Stage B for determining mass ratio in CV dwarf novae SU UMa systems. Additional observations and simulations are needed to further test this recently proposed hypothesis. For now, we suggest an average q = 0.21(1) for this system.

  11. Uma Visão do Universo Segundo um Grupo de Alunos do Ensino Médio de São Paulo

    NASA Astrophysics Data System (ADS)

    Elias, D. S.; Araújo, M.; Amaral, L. H.; Voelzke, M. R.; Araújo, M.

    2005-08-01

    A astronomia, embora seja uma ciência popular, com inúmeras descobertas de interesse público, ainda é apresentada desconsiderando-se os aspectos históricos e científicos relacionados ao seu desenvolvimento, sendo geralmente veiculada nos meios de comunicação de maneira pouco esclarecedora e não raro com imprecisões. Neste trabalho analisou-se a concepção de um grupo de estudantes de Ensino Médio sobre conceitos de astronomia, visando identificar sua visão de mundo a respeito do Universo, envolvendo idéias sobre espaço e tempo. Para issso, foi aplicado um questionário em três escolas da grande São Paulo em um espaço amostral de 270 alunos. Constatou-se que, embora o ensino de astronomia esteja previsto nos PCNEM, os resultados obtidos na pesquisa mostram que há grande deficiência no conhecimento dos temas investigados. Nesse sentido, verificou-se que apenas 20% dos alunos eram capazes de relacionar a sucessão das semanas com as fases da lua, enquanto 28% associaram as estações do ano à inclinação do eixo de rotação da Terra. Por outro lado, somente 23% dos alunos tinham noções das distâncias entre os objetos celestes próximos da Terra e 56% conseguiram relacionar o Big Bang com a origem do Universo. Finalmente, constatou-se que 37% reconheciam o ano-luz como uma unidade de distância e 60% reconheciam o Sol como sendo uma estrela. Apesar de 60% dos alunos indicarem que a escola é a principal fonte para aquisição dos conhecimentos de astronomia, conclui-se que seus conceitos nessa área ainda são inadequados, havendo necessidade de ampliação e aprimoramento da abordagem desses conteúdos nos ambientes escolares.

  12. Volatiles in gases and melt inclusions erupted during the 2008-9 Halema`uma`u eruption of Kilauea Volcano, Hawai`i

    NASA Astrophysics Data System (ADS)

    Sawyer, G. M.; Sides, I.; Martin, R.; Mead, I.; Roberts, T. J.; Jones, R.; Tsanev, V. I.; Herd, R.; Sutton, A. J.; Elias, T.; Werner, C. A.; Swanson, D.; Allard, P.; Oppenheimer, C.; Edmonds, M.

    2009-12-01

    Parental magmas ascending beneath Kilauea Volcano degas volatile species in the order of their solubility, with deep degassing (up to a few tens of kilometres depth) dominated by carbon dioxide and shallow degassing (less than 1 km depth), by water and sulphur gases. The 2008-9 Halema`uma`u eruption provides a unique opportunity to measure the composition of primary, unfractionated volcanic gas as part of a young and highly concentrated plume, using new miniature gas sensors. The eruption also offers a chance to test models of volatile fractionation and degassing at Kilauea that were originally proposed a quarter century ago and, in doing so, extend our understanding of magma and degassing pathways at this long-lived and well-studied volcano. In April 2009, the composition of volcanic gas was measured by non-dispersive infra-red spectrometers, electrochemical sensors and FTIR spectroscopy on the Halema`uma`u crater rim. CO2 concentration was measured by two 21 cm-pathlength miniature NDIR spectrometers, deployed side by side. SO2, H2S and CO concentrations were measured simultaneously by an array of electrochemical sensors adjacent to the CO2 sensors. Sampling rates of ~1 Hz were achieved on all sensors. The data sets were cross-correlated with one another and gas ratios derived for the summit gas plume. Open-path active source FTIR measurements carried out close to the sensors yielded independent ratios between the major volatile species. Tephra erupted from the new Halema`uma`u vent in September 2008 was sampled, and olivine-hosted melt inclusions were isolated and exposed for analysis by electron microprobe and SIMS for major elements and volatile species. We present S, Cl, F, H2O and CO2 concentrations in melt inclusions and matrix glasses, as well as major and trace element data, in order to establish degassing and melt evolution trends. We compare the data to those collected previously for East Rift eruptions, for the Summit plume during rift eruptions, for

  13. Evidence for gas accumulation beneath the surface crust driving cyclic rise and fall of the lava surface at Halema`uma`u, Kilauea Volcano

    NASA Astrophysics Data System (ADS)

    Patrick, M. R.; Orr, T. R.; Wilson, D.; Sutton, A. J.; Elias, T.; Fee, D.; Nadeau, P. A.

    2010-12-01

    The ongoing eruption in Halema`uma`u crater, at the summit of Kilauea Volcano, has surpassed the two-year mark and is characterized by lava lake activity in the vent. As of August 2010, the lava lake is about 70 m in diameter and 180 m below the rim of a narrow vent cavity. Although the explosive events that typified the first year of activity have abated, episodic rise and fall of the lava surface remains common. Cycles of rise and fall range from several minutes to eight hours in duration and are characterized by a quiescent rise phase and violent, gas-charged fall, spanning a height change of 20-30 m. Several models have been proposed to explain the cyclic rise and fall of lava surfaces at basaltic volcanoes, which in some cases is referred to as “gas pistoning”. In one model, episodic rise and fall is driven by the ascent of gas slugs from depth. In another, the cyclic behavior is driven by gas accumulation beneath the surface crust, with each cycle terminated by an abrupt failure of the crust, resulting in gas release. Seismic and infrasound data, as well as gas and webcam monitoring, at Halema`uma`u over the past two years strongly support the gas accumulation model, based on several lines of evidence. First, gas emission rates drop significantly below background levels during the rise phase, and increase dramatically during the fall phase, suggesting a process of gas buildup and release as opposed to slug flow. Second, the rise phases can last several hours, which is longer than reasonable slug ascent times. Third, the rise rate decreases over time, and in many cases plateaus, as the lava reaches its high stand, which is contrary to the exponential increase expected for gas slugs. Fourth, webcam video has captured numerous instances where rockfalls piercing the surface crust initiate gas release and lava level drop, suggestive of gas accumulation at shallow levels. Lastly, FTIR (Fourier Transform Infrared Spectroscopy) data reveal changes in gas

  14. BVR{sub c}I{sub c} OBSERVATIONS AND ANALYSES OF THE DWARF DETACHED BINARY V1043 CASSIOPEIA AND A COMMENT ON PRECONTACT W UMa'S

    SciTech Connect

    Samec, R. G.; Smith, P. M.; Chamberlain, H.; Faulkner, D. R.; Van Hamme, W.

    2013-01-01

    Complete Bessel BVR{sub c}I{sub c} light curves of V1043 Cassiopeia [2MASS J00371195+5301324, Mis V1292, USNO-A2.0 1425-00875743, {alpha}(2000) = 00{sup h}37{sup m}11.{sup s}95, {delta}(2000) = +53 Degree-Sign 01'32.''5] are analyzed. The system is a member of the small group of pre-contact W UMa binaries (PCWBs). Its light curve has the appearance of an Algol (EA) light curve, however it is made up of dwarf solar type components in a detached mode with a period of only 0.6616 days. The analysis includes a period study, an improved ephemeris, a mass ratio search, and a simultaneous BVR{sub c}I{sub c} Wilson-Devinney solution. We document about 20 other PCWBs given in the literature. Several have RS CVn-like properties.

  15. Photometric observations and light curve solutions of the W UMa stars NSVS 2244206, NSVS 908513, CSS J004004.7+385531 and VSX J062624.4+570907

    NASA Astrophysics Data System (ADS)

    Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Vasileva, Doroteya Lyubenova; Petrov, Nikola Ivanov

    2016-09-01

    Photometric observations in Sloan g‧ and i‧ bands of four W UMa stars, NSVS 2244206, NSVS 908513, CSS J004004.7+385531 and VSX J062624.4+570907, are presented. The light curve solutions reveal that all targets have overcontact configurations with fillout factors within 0.15-0.26. Their components are G-K spectral types and are almost in thermal contact. They are also relatively close in size and luminosity: the radius ratios r2/r1 are within 0.75-0.90 the luminosity ratios l2/l1 are within 0.53-0.63. The results of the light curve solution of CSS J004004.7+385531 imply the weak limb-darkening effect of its primary component and possible presence of additional absorbing features in the system.

  16. Lineage diversification of fringe-toed lizards (Phrynosomatidae: Uma notata complex) in the Colorado Desert: Delimiting species in the presence of gene flow

    USGS Publications Warehouse

    Gottscho, Andrew D.; Wood, Dustin A.; Vandergast, Amy; Lemos Espinal, Julio A.; Gatesy, John; Reeder, Tod

    2017-01-01

    Multi-locus nuclear DNA data were used to delimit species of fringe-toed lizards of theUma notata complex, which are specialized for living in wind-blown sand habitats in the deserts of southwestern North America, and to infer whether Quaternary glacial cycles or Tertiary geological events were important in shaping the historical biogeography of this group. We analyzed ten nuclear loci collected using Sanger sequencing and genome-wide sequence and single-nucleotide polymorphism (SNP) data collected using restriction-associated DNA (RAD) sequencing. A combination of species discovery methods (concatenated phylogenies, parametric and non-parametric clustering algorithms) and species validation approaches (coalescent-based species tree/isolation-with-migration models) were used to delimit species, infer phylogenetic relationships, and to estimate effective population sizes, migration rates, and speciation times. Uma notata, U. inornata, U. cowlesi, and an undescribed species from Mohawk Dunes, Arizona (U. sp.) were supported as distinct in the concatenated analyses and by clustering algorithms, and all operational taxonomic units were decisively supported as distinct species by ranking hierarchical nested speciation models with Bayes factors based on coalescent-based species tree methods. However, significant unidirectional gene flow (2NM >1) from U. cowlesi and U. notata into U. rufopunctata was detected under the isolation-with-migration model. Therefore, we conservatively delimit four species-level lineages within this complex (U. inornata, U. notata, U. cowlesi, and U. sp.), treating U. rufopunctata as a hybrid population (U. notata x cowlesi). Both concatenated and coalescent-based estimates of speciation times support the hypotheses that speciation within the complex occurred during the late Pleistocene, and that the geological evolution of the Colorado River delta during this period was an important process shaping the observed phylogeographic patterns.

  17. Lineage diversification of fringe-toed lizards (Phrynosomatidae: Uma notata complex) in the Colorado Desert: Delimiting species in the presence of gene flow.

    PubMed

    Gottscho, Andrew D; Wood, Dustin A; Vandergast, Amy G; Lemos-Espinal, Julio; Gatesy, John; Reeder, Tod W

    2017-01-01

    Multi-locus nuclear DNA data were used to delimit species of fringe-toed lizards of the Uma notata complex, which are specialized for living in wind-blown sand habitats in the deserts of southwestern North America, and to infer whether Quaternary glacial cycles or Tertiary geological events were important in shaping the historical biogeography of this group. We analyzed ten nuclear loci collected using Sanger sequencing and genome-wide sequence/single-nucleotide polymorphism (SNP) data collected using restriction-associated DNA (RAD) sequencing. A combination of species discovery methods (concatenated phylogenies, parametric and non-parametric clustering algorithms) and species validation approaches (coalescent-based species tree/isolation-with-migration models) were used to delimit species, infer phylogenetic relationships, and to estimate effective population sizes, migration rates, and speciation times. Uma notata, U. inornata, U. cowlesi, and an undescribed species from Mohawk Dunes, Arizona (U. sp.) were supported as distinct in the concatenated analyses and by clustering algorithms, and all operational taxonomic units were decisively supported as distinct species by ranking hierarchical nested speciation models with Bayes factors based on coalescent-based species tree methods. However, significant unidirectional gene flow (2NM>1) from U. cowlesi and U. notata into U. rufopunctata was detected under the isolation-with-migration model. Therefore, we conservatively delimit four species-level lineages within this complex (U. inornata, U. notata, U. cowlesi, and U. sp.), treating U. rufopunctata as a hybrid population (U. notata×cowlesi). Both concatenated and coalescent-based estimates of speciation times support the hypotheses that speciation within the complex occurred during the late Pleistocene, and that the geological evolution of the Colorado River delta during this period was an important process shaping the observed phylogeographic patterns.

  18. Detecção da fase impulsiva de uma explosão solar gigante até 405 GHz

    NASA Astrophysics Data System (ADS)

    Raulin, J.-P.; Makhmutov, V.; Kaufmann, P.; Pacini, A. A.; Luethi, T.; Hudson, H. S.; Gary, D. E.; Yoshimori, M.

    2003-08-01

    A explosão ocorrida no dia 25/08/2001 foi uma das mais intensas do presente ciclo solar em ondas de rádio de altas frequências. Foram medidas em ondas milimétricas e submilimétricas, aproximadamente, 105 e vários milhares de unidades de fluxo solar, respectivamente. Apresentamos um estudo deste evento em múltiplas frequências, desde microondas (1GHz), até ondas submilimétricas (405 GHz) detectadas pelo Telescópio Solar para ondas Submilimétricas (SST). Esta base de dados foi complementada utilizando-se o experimento Yohkoh, incluindo a emissão em raios-X duros e raios-g (até 100 MeV), e imagens em raios-X moles da região ativa envolvida. Enfocamos e discutimos principalmente os seguintes aspectos da fase impulsiva do evento: (i) as implicações deduzidas do espectro eletromagnético, obtido pela primeira vez até 405 GHz; (ii) a dinâmica da região ativa. Os resultados mostram que para explicar o espectro rádio observado, são necessários entre 3.5×1037 e 1.5×1039 elétrons acelerados acima de 20 keV em uma região de campo magnético entre 300 e 800 Gauss. A estimativa do fluxo de fótons que seria produzido por estes elétrons, mostra que grande parte deles não precipitou na baixa atmosfera. A evolução temporal da emissão em raios-X moles revela que a configuração magnética da região ativa foi muito dinâmica durante a fase impulsiva da explosão. Em particular, mostramos que a produção dos elétrons altamente energéticos foi iniciada junto com a aparição, na baixa coroa solar, de um novo sistema compacto de estruturas magnéticas. Este fato sugere que os locais de aceleração estão localizados na baixa atmosfera do Sol, como resultado da interação entre o novo sistema compacto e o campo magnético ambiente da região ativa.

  19. Ensino de gravitação clássica no nível médio: uma proposta de abordagem e resultados preliminares

    NASA Astrophysics Data System (ADS)

    Medeiros, G. C. M.; Jafelice, L. C.

    2003-08-01

    O ensino de gravitação clássica é comumente realizado de maneira formal e descontextualizado da experiência com a força-peso e da história do tema. Fustigados por anos de experiência de ensino no assunto, nem sempre com bons resultados, propomos uma abordagem ancorada nos eixos: a) contextualização histórica; e b) reconhecimento do peso como a força de atração gravitacional. O primeiro eixo integra o tema no desenvolvimento cultural do ser humano, praticando a interdisciplinaridade. O segundo eixo embasa construtivamente a abordagem, levando o aluno a realizar experiências e a vivenciar o reconhecimento de uma força universal. A abordagem foi construída através das etapas: 1) análise crítica do tema em livros didáticos; 2) elaboração de um curso para professores das várias disciplinas do ensino médio, identificando conexões para a prática da interdisciplinaridade; 3) elaboração de material didático; e 4) avaliação da eficácia da abordagem. No trabalho discutimos em detalhe as quatro etapas. Como resultados, adiantamos que: tabulamos a abordagem de gravitação nos livros didáticos, ainda muito tradicional e carecedora de atividades criativas que poderiam melhor explorar esse assunto; mapeamos, junto aos professores, padrões de conceitos espontâneos e erros associados ao tema; e, no curso, adaptamos e testamos a eficiência de materiais instrucionais existentes e criamos outros novos (e.g., para trabalhar excentricidades das órbitas planetárias), além disto elaboramos roteiros e figuras para tratamentos qualitativo e quantitativo da lei da gravitação universal. As avaliações feitas pelos professores foram muito animadoras. O espaço da presente reunião será aproveitado para socializar a proposta e os resultados obtidos e para submeter o projeto à análise crítica. (PPGECNM/UFRN; PRONEX/FINEP; NUPA/USP; Temáticos/FAPESP)

  20. Analysis of the southern pre-contact W UMa binary ZZ Eridani: A 34 year period study yields a possible low-mass companion

    SciTech Connect

    Samec, R. G.; Clark, J. D.; Hamme, W. Van; Faulkner, D. R.

    2015-02-01

    Complete Bessel BVRI light curves of ZZ Eridani [2MASS J04130109-1044545, HV 6280, NSVS 14888164 α(2000) = 04{sup h}13{sup m}1{sub ·}{sup s}10, δ(2000) = −10°44′54{sub ·}{sup ″}5 (ICRS), V = 13.9-14.4-15.0] are observed and analyzed. The system is a southern pre-contact W UMa binary. Its light curve has the appearance of an Algol (EA) light curve, however, it is made up of dwarf solar-type components with a period of only 0.4521 days. Our 34 year period study yields a sinusoidal fit or an increasing quadratic fit. The sinusoid may indicate that a third body is orbiting the close binary. The lower-limit mass of the third body is near that of the brown dwarf limit (0.095 M α). Also included is an improved ephemeris, a mass ratio search, and a simultaneous BVRI Wilson–Devinney solution.

  1. Vesiculation Processes During Transient and Sustained Explosive Activity at Halema'uma'u Crater, Kīlauea in 2008-2013.

    NASA Astrophysics Data System (ADS)

    Houghton, B. F.; Orr, T. R.; Taddeucci, J.; Carey, R.; Del Bello, E.; Scarlato, P.; Patrick, M. R.

    2015-12-01

    The 2008-2015 summit eruption within Halema'uma'u crater, Kilauea has been characterized by alternations of passive degassing with two styles of explosive activity, both frequently triggered by rock falls that perturb the free surface of magma in the vent. In the first, larger rock falls trigger second vesiculation of magma at depths up to 100 m below the free surface ejecting juvenile bomb and lapilli populations of very variable vesicularity. The second, the topic of this presentation, consists of intervals of minutes to tens-of-minutes duration of low fountaining activity often from multiple locations. Vents may migrate with time, first across the free surface to its margins, and then around the margins, in response to convection processes in the underlying melt. Analysis of short sequences of high-speed, high-resolution video footage shows that the sustained fountaining is maintained by not by a continuous discharge but rather by closely spaced bursting of two-to-five meter-wide bubbles. Bubbles accelerate through the free surface at velocities of 10 to 40 m/s disrupting the viscoelastic crust and forming large fall-back, lacework pyroclasts and smaller highly vesicular bombs and lapilli.

  2. Adapting a Common Photographic Camera to Take Pictures of the Sky. (Spanish Title: Adaptando Una Camara Fotografica Comun Para Obtener Fotografias del Cielo.) Adaptando Uma Câmera Fotográfica Manual Simples Para Fotografar o Céu

    NASA Astrophysics Data System (ADS)

    Danhoni Neves, Marcos Cesar; Pereira, Ricardo Francisco

    2007-12-01

    In this paper will be introduced a method of astrophotography using a non-reflex photographic camera (a low-cost method). It will be revised some photographic processes commonly used nowadays for comparison with the aims of this paper. En este trabajo será introducido un método de astrofotografia que utiliza una cámara fotográfica non-reflex (un método de bajo costo). Serán revisados algunos procesos fotográficos comúnmente utilizados actualmente para comparación con los objetivos de este trabajo. O presente artigo procura introduzir um método de astrofotografia utilizando uma câmera fotográfica não reflex, de baixo custo. É feita uma revisão do processo fotográfico comumente empregado para fins de comparação com os objetivos pretendidos no presente trabalho.

  3. Diffuse cystic lung diseases: differential diagnosis.

    PubMed

    Baldi, Bruno Guedes; Carvalho, Carlos Roberto Ribeiro; Dias, Olívia Meira; Marchiori, Edson; Hochhegger, Bruno

    2017-01-01

    Diffuse cystic lung diseases are characterized by cysts in more than one lung lobe, the cysts originating from various mechanisms, including the expansion of the distal airspaces due to airway obstruction, necrosis of the airway walls, and parenchymal destruction. The progression of these diseases is variable. One essential tool in the evaluation of these diseases is HRCT, because it improves the characterization of pulmonary cysts (including their distribution, size, and length) and the evaluation of the regularity of the cyst wall, as well as the identification of associated pulmonary and extrapulmonary lesions. When combined with clinical and laboratory findings, HRCT is often sufficient for the etiological definition of diffuse lung cysts, avoiding the need for lung biopsy. The differential diagnoses of diffuse cystic lung diseases are myriad, including neoplastic, inflammatory, and infectious etiologies. Pulmonary Langerhans cell histiocytosis, lymphangioleiomyomatosis, lymphocytic interstitial pneumonia, and follicular bronchiolitis are the most common diseases that produce this CT pattern. However, new diseases have been included as potential determinants of this pattern. RESUMO As doenças pulmonares císticas difusas se caracterizam pela presença de cistos envolvendo mais de um lobo pulmonar, que se originam por diversos mecanismos, incluindo dilatação dos espaços aéreos distais por obstrução, necrose das paredes das vias aéreas e destruição do parênquima. Essas doenças apresentam evolução variável. A TCAR é fundamental na avaliação dessas doenças uma vez que permite uma melhor caracterização dos cistos pulmonares, incluindo sua distribuição, tamanho, extensão e regularidade das paredes, assim como a determinação de outras lesões pulmonares e extrapulmonares associadas. Frequentemente a TCAR é suficiente para a definição etiológica dos cistos pulmonares difusos, associada a achados clínicos e laboratoriais, sem a necessidade

  4. Ambient air quality effects of the 2008-2009 Halema`uma`u eruption on the Island of Hawai`i

    NASA Astrophysics Data System (ADS)

    Elias, T.; Sutton, A. J.; Kauahikaua, J. P.; Ray, J. D.; Babb, J. L.

    2009-12-01

    While the Halema`uma`u eruption has enlivened volcanologists with the rare opportunity to observe eruptive processes at Kilauea’s summit, it has also caused significant environmental impact on the Island of Hawai`i. Since the beginning of 2008, the combined SO2 emissions from the east rift zone (ERZ) and summit of Kilauea have increased by ~40% as compared to the 2003-2007 long-term average. However, emissions from Kilauea’s summit have increased ~6-fold, averaging 850 t/d during January 2008-August 2009. Although average emissions from the ERZ during this period have been 1-2 times that of the summit, the relative impact of summit emissions is disproportionately large due to the location of the vent and the plume dispersal pattern to downwind communities. Ambient air quality data show that federal standards have been exceeded frequently in various communities on the south half of the island. Between April 2008 and August 2009, primary health standards for SO2 and PM2.5 were exceeded on 41 and 19 occasions respectively in Pahala, located ~30 km downwind of the Kilauea summit under prevailing trade wind conditions. Pahala, which exceeded the SO2 annual standard for 2008, had not exceeded standards prior to the opening of the Halema`uma`u vent in March 2008. In July 2008, the U.S. Secretary of Agriculture designated Hawai`i County a primary natural disaster area due to agricultural losses from volcanic emissions. Many growers of exotic flower crops in the Ka`u district suffered irrecoverable losses. Coffee and macadamia nut farmers also reported damage to their fields. While some livestock farmers reported eye irritation in cattle, more significant damage was observed in the accelerated deterioration of galvanized fencing, gates, pipelines and other infrastructure. The increase in volcanic pollution has spurred health concerns. A rise in respiratory emergencies for visitors to Kilauea caldera in early 2008 led Hawai`i Volcanoes National Park to close areas

  5. Variação temporal do gradiente radial de o/h a partir de uma amostra de nebulosas planetárias

    NASA Astrophysics Data System (ADS)

    Maciel, W. J.; Costa, R. D. D.; Uchida, M. M. M.

    2003-08-01

    Gradientes radiais de abundância são observados no disco de nossa Galáxia e também em outras galáxias espirais. No caso da Galáxia, o principal problema relativo aos gradientes é sua variação temporal, que constitui um dos principais vínculos aos modelos de evolução química da Galáxia. As nebulosas planetárias são particularmente interessantes no estudo dos gradientes e suas variações, tanto espaciais como temporais. São objetos brilhantes, podendo ser observadas a grandes distâncias, e têm abundâncias relativamente precisas de diversos elementos químicos. Além disso, sendo originadas de estrelas com massas entre 0.8 e 8 massas solares na sequência principal, incluem objetos com idades e populações diferentes, o que as torna especialmente interessantes ao estudo da variação temporal dos gradientes. Neste trabalho, apresentamos resultados recentes sobre a variação temporal do gradiente de O/H a partir de uma amostra contendo cerca de 200 nebulosas, para as quais obtivemos distâncias por métodos estatísticos. As abundâncias foram parcialmente obtidas a partir de observações em Itajubá e La Silla, sendo as restantes obtidas da literatura. Os resultados mostram, pela primeira vez, evidências de um achatamento do gradiente de O/H, de -0.11 dex/kpc para -0.06 dex/kpc nos últimos 9 giga-anos ou de -0.08 dex/kpc para -0.06 dex/kpc nos últimos 5 giga-anos. Esses valores apresentam um bom acordo com alguns modelos recentes para a evolução química da Galáxia. (FAPESP/CNPq)

  6. Uso de modelos mecânicos em curso informal de astronomia para deficientes visuais. Resgate de uma experiência

    NASA Astrophysics Data System (ADS)

    Tavares, E. T., Jr.; Klafke, J. C.

    2003-08-01

    O presente trabalho propõe-se a resgatar uma experiência que teve lugar no Planetário de São Paulo nos anos 60. Em 1962, o Sr. Acácio, então com 37 anos, deficiente visual desde os 27, passou a assistir às aulas ministradas pelo Prof. Aristóteles Orsini aos integrantes do corpo de servidores do Planetário. O Sr. Acácio era o único deficiente da turma e, embora possuísse conhecimentos básicos e relativamente avançados de matemática, enfrentava dificuldades na compreensão e acompanhamento da exposição, como também em estudos posteriores. Com o intuito de auxiliá-lo na superação desses problemas, o Prof. Orsini solicitou a construção de modelos mecânicos que, através do sentido do tato, permitissem o acompanhamento das aulas e a transposição do modelo para o "constructo" mental. Essa prática mostrou-se tão eficaz que facilitou sobejamente o aprendizado da matéria pelo sujeito. O Sr. Acácio passou a integrar o corpo de professores do Planetário/Escola Municipal de Astrofísica, tendo ficado responsável pelo curso de "Introdução à Astronomia" por vários anos. Além disso, a experiência foi tão bem sucedida que alguns dos modelos tiveram seus elementos constitutivos pintados diferencialmente para serem utilizados em cursos regulares do Planetário, tornando-se parte integrante do conjunto de recursos didáticos da instituição. É pensando nessa eficácia, tanto em seu objetivo original permitir o aprendizado de um deficiente visual quanto no subsidiário recurso didático sistemático da instituição que decidimos resgatar essa experiência. Estribados nela, acreditamos ser extremamente produtivo, em termos educacionais, o aperfeiçoamento dos modelos originais, agora resgatados e restaurados, e a criação de outros que pudessem ser utilizados no ensino dessa ciência a deficientes visuais.

  7. Percepção astronómica de um grupo de alunos do ensino médio de uma escola da rede estadual de São Paulo

    NASA Astrophysics Data System (ADS)

    de Oliveria, E. F.; Voelzke, M. R.

    2009-03-01

    Sendo a Astronomia uma das cièncias mais antigas da humanidade, e considerando sua importáncia histórica e cultural, é de extrema releváncia que tópicos relacionados a ela sejam tratados nas escolas. Embora os Parámetros Curriculares Nacionais do Ensino Médio (PCN-EM) e as Orientaçiacute;es Complementares aos Parámetros (PCN+) apontem a importáncia de uma abordagem significativa de conceitos relacionados à Astronomia nas aulas de Física, muitos estudantes terminam o Ensino Médio (EM) sem compreender a razão de certos acontecimentos de origem celeste, ainda que estes façam parte de seu cotidiano e sejam alvos da curiosidade natural dos jovens. Da observação dessa curiosidade em alunos de uma escola pública paulista, na cidade de Suzano, surgiu o interesse em investigar os conhecimentos básicos em Astronomia dos alunos do Ensino Médio desta escola, constituindo-se este como principal objetivo desta pesquisa. Para tanto foi elaborado um questionário de múltipla escolha aplicado inicialmente a 34 alunos do primeiro ano e, posteriormente, a mais 310, distribuídos entre as très séries do Ensino Médio dos períodos matutino e noturno. Dessa forma, observou-se que 73,9% dos estudantes identificaram o Sol como sendo uma estrela, 67,1% mostraram compreender a sucessão entre dia e noite e 52,3% relacionaram o Big Bang à origem do Universo. Em contrapartida, apenas 34,5% relacionaram as estaçíes do ano à inclinação do eixo de rotação da Terra, 21,3% indicaram a influència gravitacional simultánea da Lua e do Sol como responsável pelo fenòmeno das marés, 24,5% indicaram corretamente quais são os objetos celestes mais próximos da Terra, 36,1% identificaram ano-luz como uma medida de distáncia e 34,2% reconheceram as estrelas cadentes como meteoros, evidenciando-se assim o pequeno discernimento dos estudantes quanto aos fenòmenos e termos astronòmicos do cotidiano. Além disso, foram comparadas as respostas de alun! os de diferentes s

  8. Robotic pulmonary lobectomy for lung cancer treatment: program implementation and initial experience.

    PubMed

    Terra, Ricardo Mingarini; Araujo, Pedro Henrique Xavier Nabuco de; Lauricella, Leticia Leone; Campos, José Ribas Milanez de; Costa, Herbert Felix; Pego-Fernandes, Paulo Manuel

    2016-01-01

    comparar resultados da lobectomia pulmonar por videotoracoscopia com a robótica. O programa de cirurgia robótica do Instituto do Câncer do Estado de São Paulo, localizado na cidade de São Paulo (SP), foi uma iniciativa multidisciplinar que envolveu diversas especialidades cirúrgicas e equipes de anestesia, enfermagem e engenharia clínica. Nesta análise, avaliamos os pacientes incluídos no braço lobectomia robótica durante os primeiros três meses do estudo (de abril a junho de 2015). Dez pacientes foram incluídos nesta análise. Eram oito mulheres e dois homens. A média de idade foi de 65,1 anos. Todos apresentavam tumores periféricos. Foram realizadas lobectomia superior direita, em quatro pacientes; lobectomia inferior direita, em quatro; e lobectomia superior esquerda, em dois. Os tempos cirúrgicos variaram bastante (variação, 135-435 min). Não foi necessária a conversão para técnica aberta ou videotoracoscópica em nenhum paciente. Não foram observadas complicações intraoperatórias. Apenas o primeiro paciente foi encaminhado à UTI no pós-operatório. Não houve mortalidade nem reinternações em 30 dias após a alta. A única complicação pós-operatória observada foi dor torácica (grau 3), em dois pacientes. O exame anatomopatológico revelou a ressecção completa do tumor em todos os casos. A implantação de um programa de cirurgia torácica robótica, quando há integração e treinamento adequado de todas as equipes envolvidas, é factível e pode reduzir a morbidade e a mortalidade.

  9. Learning Astronomy by Playing in a Park. (Spanish Title: Aprender AstronoMía Jugando en Una Plaza.) Aprender Astronomia Brincando em Uma Praça

    NASA Astrophysics Data System (ADS)

    Camino, Néstor

    2012-12-01

    trabalho alguns jogos de praça, considerados como módulos didáticos para imaginar processos astronômicos, a partir da concepção de que a aprendizagem em Astronomia deve-se desenvolver fortalecendo a relação do próprio corpo com o espaço tridimensional e com o tempo, tal como se vive ao observar o céu, construindo um "diálogo" entre o mundo real e as aprendizagens a construir. Os jogos apresentados (carrosséis e tobogãs) foram desenhados para trabalhar sobre a translação da Terra em torno do Sol, as fases da Lua e a gravidade, e sobre o que um observador percebe dos mesmos. Dá-se a descrição de cada jogo, discutem-se seus fundamentos físicos e astronômicos, e desenvolve-se uma crítica didática dos mesmos. Finalmente, comenta-se o papel que deveriam ter os docentes no apoio aos aprendizes no processo de interação com os jogos apresentados.

  10. Multiwavelength optical observations of chromospherically active binary systems. V. FF UMa (2RE J0933+624): a system with orbital period variation

    NASA Astrophysics Data System (ADS)

    Gálvez, M. C.; Montes, D.; Fernández-Figueroa, M. J.; de Castro, E.; Cornide, M.

    2007-09-01

    Context: This is the fifth paper in a series aimed at studying the chromospheres of active binary systems using several optical spectroscopic indicators to obtain or improve orbital solution and fundamental stellar parameters. Aims: We present here the study of FF UMa (2RE J0933+624), a recently discovered, X-ray/EUV selected, active binary with strong Hα emission. The objectives of this work are, to find orbital solutions and define stellar parameters from precise radial velocities and carry out an extensive study of the optical indicators of chromospheric activity. Methods: We obtained high resolution echelle spectroscopic observations during five observing runs from 1998 to 2004. We found radial velocities by cross correlation with radial velocity standard stars to achieve the best orbital solution. We also measured rotational velocity by cross-correlation techniques and have studied the kinematic by galactic space-velocity components (U, V, W) and Eggen criteria. Finally, we have determined the chromospheric contribution in optical spectroscopic indicators, from Ca ii H & K to Ca ii IRT lines, using the spectral subtraction technique. Results: We have found that this system presents an orbital period variation, higher than previously detected in other RS CVn systems. We determined an improved orbital solution, finding a circular orbit with a period of 3.274 days. We derived the stellar parameters, confirming the subgiant nature of the primary component (MP = 1.67 M⊙ and R sin{i}_P=2.17 R⊙) and obtained rotational velocities (v sin{i}), of 33.57 ± 0.45 km s-1 and 32.38 ± 0.75 km s-1 for the primary and secondary components respectively. From our kinematic study, we can deduce its membership to the Castor moving group. Finally, the activity study has given us a better understanding of the possible mechanisms that produce the orbital period variation. Based on observations collected with the 2.2 m telescope at the Centro Astronómico Hispano Alemán (CAHA

  11. [Congenital absence of the inferior vena cava as a risk factor for pulmonar thromboembolism].

    PubMed

    Castro, F J; Pérez, C; Narváez, F J; Gacía, A; Biosca, M; Vilaseca, J; Vives, J; Argiles, J M

    2003-06-01

    The absence of the inferior vena cava is a rare congenital anomaly. Currently its diagnosis is based on non-invasive imaging techniques (computerised axial tomagraphy and nuclear magnetic resonance). In most cases, it constitutes a casual finding upon practising these image tests unrelated to this congenital anomaly. In the symptomatic patients, the complaints associated are secondary to venous insufficiency and/or deep vein thrombosis. Recently the congenital absence of inferior vena cava has been described as a risk factor of deep vein thrombosis in young patients. We present a case of congenital absence of inferior vena cava that was admitted in our hospital because of pulmonary thromboembolism.

  12. [Pulmonary perfusion in embolism of pulmonar arteries without pulmonary infarction (author's transl)].

    PubMed

    Bordt, J; Müller, K M

    1977-02-01

    Six autopsy lungs with embolism of the pulmonary arteries but without infarction, were subjected to comparative angiographic and morphologic examination of bronchial arteries. In pulmonary embolism without hemorrhagic infarction the disconnected vascular bed of pulmonary arteries can be demonstrated distally of the obstructive thrombo-embolism and with a noncapillary contrast medium. The vascular bed appears in intrapulmonal, precapillary, bronchopulmonal anastoses. The results of the investigation explain an intravital sufficient subsidiary circulation in the pulmonary areas separated from the normal circulation of pulmonary arteries. An extended subsidiary development of bronchial arteries in reaction to previous chronic pulmonary disease would help, according to our findings in postmortem lung angiographies, to support the circulation after embolism of pulmonary arteries.

  13. Pulmonar recruitment in acute respiratory distress syndrome. What is the best strategy?

    PubMed

    Santos, Cíntia Lourenço; Samary, Cynthia dos Santos; Fiorio Júnior, Pedro Laurindo; Santos, Bruna Lourenço; Schanaider, Alberto

    2015-01-01

    Supporting patients with acute respiratory distress syndrome (ARDS), using a protective mechanical ventilation strategy characterized by low tidal volume and limitation of positive end-expiratory pressure (PEEP) is a standard practice in the intensive care unit. However, these strategies can promote lung de-recruitment, leading to the cyclic closing and reopening of collapsed alveoli and small airways. Recruitment maneuvers (RM) can be used to augment other methods, like positive end-expiratory pressure and positioning, to improve aerated lung volume. Clinical practice varies widely, and the optimal method and patient selection for recruitment maneuvers have not been determined, considerable uncertainty remaining regarding the appropriateness of RM. This review aims to discuss recent findings about the available types of RM, and compare the effectiveness, indications and adverse effects among them, as well as their impact on morbidity and mortality in ARDS patients. Recent developments include experimental and clinical evidence that a stepwise extended recruitment maneuver may cause an improvement in aerated lung volume and decrease the biological impact seen with the traditionally used sustained inflation, with less adverse effects. Prone positioning can reduce mortality in severe ARDS patients and may be an useful adjunct to recruitment maneuvers and advanced ventilatory strategies, such noisy ventilation and BIVENT, which have been useful in providing lung recruitment.

  14. [Association of pulmonar tuberculosis with HLA system antigens in Northeastern Mexico].

    PubMed

    Rojas-Alvarado, María de los Angeles; Díaz-Mendoza, María Luisa; Said-Fernández, Salvador; Caballero-Olín, Guillermo; Cerda-Flores, Ricardo M

    2008-01-01

    Genetic susceptibility to pulmonary tuberculosis (PTb) has been associated with the HLA (Antigens of the Human Leukocytes) system of the MHC (Major Histocompatibility Complex), mainly with HLA-DR and-DQ antigens. Based on this assumption we carried out a case control study to determine the association of PTb with the HLA-DR and-DQ antigens among a sample of patients attending a medical unit belonging to the Mexican Social Security System (IMSS). HLA system phenotypes from cases (n=50) and controls (n=417), were defined serologically using a complement dependent microlymphocytotoxic assay. B lymphocytes were obtained using immunobeads. The allele and haplotype frequencies were determined using the Arlequin version 3.01 computer software. Relative risk (RR) was calculated with the Epimax Table Calculator. The alelles HLA-DR11(5), -DR16(2) and -DQ7(3) and haplotypes /DR11(5)-DQ7(3), /DR14(6)-DQS(1) and /DR16(2)-DQ7(3) had a higher frequency in cases than in controls (RR>1, p<0.05). The HLA-DR17(3) and DQ8(3) alelles and /DR17(3)-DQ2 and /DR4-DQ8(3) haplotypes had a higher frequency among controls than among cases (RR<1, p<.05). These results indicate an association between PTb with the HLA-DR and -DQ antigens in a Mexican sample. Our results are similar to those found in the international literature.

  15. Pulmonary thromboembolism after long car travel (Tromboembolismo pulmonar tras viaje prolongado en automóvil).

    PubMed

    Bertos-Polo, Juan; Ortega-Carnicer, Julian; Gutiérrez-Tirado, Carlos; Ambros-Checa, Alfonso

    2003-06-01

    Prolonged immobility, especially bed rest for medical or surgical processes, constitutes one of the main risk factors for developing pulmonary thromboembolism. Immobility during extended plane or coach journeys (economy class syndrome) is not a frequent cause of serious pulmonary thromboembolism in healthy travellers. We report a case of serious pulmonary thromboembolism after a prolonged journey by car.

  16. Uma análise do fenômeno “alternância de línguas” na fala de bilíngues intermodais (Libras e Português)

    PubMed Central

    de Sousa, Aline Nunes; de Quadros, Ronice Müller

    2013-01-01

    Um interessante fenômeno lingüístico presente nas interações das pessoas bilíngues é a alternância de línguas. Neste trabalho, estamos investigando a alternância entre a língua portuguesa oral e a língua de sinais brasileira – Libras, numa mesma cadeia enunciativa, com o objetivo de identificar e analisar o uso dessa alternância na fala de uma criança e de um adulto (ambos ouvintes, filhos de pais surdos), interagindo em uma situação de bilinguismo intermodal, com interlocutores surdos e ouvintes. A alternância de línguas, nesse caso, ocorre quando se para de falar em português e se alterna para sinalizar. O presente trabalho se caracteriza como um estudo inicial, com análise qualitativa de dados. Fazem parte do nosso corpus nove sessões de interações em Libras e em português oral, gravadas em vídeo, que fazem parte do Projeto Desenvolvimento Bilíngue Bimodal da UFSC. Os dados revelam que as características da alternância de línguas pelo adulto e pela criança parecem ter semelhanças e diferenças. O sujeito adulto parece ter feito um uso da alternância mais preocupado com o curso da interação. A criança, por sua vez, não parece tê-la usado com propósitos pragmáticos específicos. Quanto à extensão das alternâncias, pode-se perceber que tanto a criança quanto o adulto utilizaram enunciados maiores do que uma única palavra isolada. O papel dos interlocutores parece ter sido decisivo nas interações aqui investigadas – especialmente nas do adulto, já que a criança ainda está em processo de tomada de consciência do papel do interlocutor na interação. PMID:24379831

  17. Retained Textile Foreign Bodies: Experience of 27 Years.

    PubMed

    Arikan, Soykan; Kocakusak, Ahmet

    2015-01-01

    Introdução e Objetivos: A retenção de materiais têxteis após a cirurgia é uma situação indesejada, tanto para o doente como para o cirurgião. Frequentemente são subnotificados por questões de natureza médico-legal. Apresentamos 14 casos de textilomas (compressoma) que foram tratados ou seguidos pessoalmente por dois cirurgiões gerais num período de 27 anos para descrever e definir as características clínicas e patológicas. Material e Métodos: Foram avaliados retrospectivamente os dados relativos a uma serie de casos, nomeadamente: características dos doentes (sexo e idade), localização anatómica do corpo estranho, intervalo de tempo até ao diagnóstico, apresentação clínica, queixas, abordagem diagnóstica, motivo de cirurgia, tipo de tratamento cirúrgico e complicações. Resultados: Foram identificados nove doentes do sexo feminino e cinco do sexo masculino, com uma média de idades de 43,07 ± 15,23 (mediano: 45) anos para o momento do diagnóstico. Em três doentes a cirurgia prévia foi cesariana, em quatro casos herniorrafia inguinal, um doente submetido a laparotomia exploradora por abdome agudo, um doente no qual foi realizado uma sigmoidectomia, uma doente submetida a apendicectomia e salpingooforectomia direita, uma doente na qual a cirurgia anterior tinha sido para corrigir uma hérnia incisional após laparotomia por neoplasia do ovário, um caso de tiroidectomia total, uma herniorrafia por hérnia epigástricae uma doente submetida cirurgia conservadora bilateral da mama com pesquisa de gânglio sentinela. A localização mais frequente dos compressomas foi intra-abdominal em sete casos, em quatro doentes a localização foi inguinal, um caso localizado na incisão da correcção da hérnia epigástrica, um doente com textiloma na loca de tiroidectomia, e no caso da doente submetida a cirurgia conservadora da mama em ambas regiões axilares se encontraram corpos estranhos/compressomas. O intervalo de tempo foi em média14

  18. Pulmonary Embolism in Ambulatory Oncologic Patients.

    PubMed

    Silva, Patrícia; Rosales, Maria; Milheiro, Maria João; Santos, Luísa L

    2015-01-01

    Introdução: A associação entre a doença oncológica e a doença tromboembólica venosa é conhecida. O doente oncológico apresenta um risco de evento trombótico seis a sete vezes superior à população em geral. O tromboembolismo pulmonar é uma importante causa de morbilidade e mortalidade neste grupo de doentes, encontrando-se a sua prevalência subestimada. Material e Métodos: Estudo retrospetivo de todos os episódios de tromboembolismo pulmonar referenciados num período de cinco anos. Selecionaram-se os doentes oncológicos em regime de ambulatório, tendo sido revistos os dados demográficos, fatores de risco, presença de sintomatologia ao diagnóstico, estratificação de risco de doença tromboembólica venosa pelo modelo de Khorana, probabilidade de mortalidade aos 30 dias e sobrevivência global. O trabalho elaborado está de acordo com a declaração de Helsínquia. Resultados: Avaliaram-se 186 doentes, 55,9% do sexo feminino, mediana de idade de 64 anos. As neoplasias mais prevalentes foram a colo-rectal (24,2%) e a pulmonar (17,7%), sendo que a maioria apresentava metástases (66,1%) ou realizaram quimioterapia (69,4%). O tromboembolismo pulmonar foi um achado imagiológico em 69,4%, sendo que nenhum dado clínico analisado no nosso estudo mostrou ter significado estatístico na apresentação de tromboembolismo pulmonar com sintomatologia clínica evidente. Observou-se uma mortalidade aos 30 dias resultante do tromboembolismo pulmonar de 7,5%, tendo-se verificado que os doentes sintomáticos apresentaram uma sobrevivência média inferior relativamente aos assintomáticos (12 vs. 20 meses; p = 0,029). A aplicação retrospetiva do modelo preditivo de Khorana para doença tromboembólica venosa nos doentes sob quimioterapia permitiu identificar 11% dos indivíduos em alto risco. Discussão: O tromboembolismo pulmonar foi um achado imagiológico na maioria dos doentes, sendo que nenhuma variável clínica se associou à presença ou aus

  19. Predictors of Mediastinitis Risk after Coronary Artery Bypass Surgery: Applicability of Score in 1.322 Cases.

    PubMed

    Oliveira, Fabiana Dos Santos; Freitas, Letícia Delfino Oliveira de; Rabelo-Silva, Eneida Rejane; Costa, Laura Maggi da; Kalil, Renato Abdala Karam; Moraes, Maria Antonieta Pereira de

    2017-08-17

    Mediastinitis is a severe surgical complication of low incidence, but high lethality. Scores used in the preoperative period to stratify the risk of postoperative mediastinitis may contribute to improve the results. To test the applicability of the MagedanzSCORE in predicting the risk factors for mediastinitis in patients undergoing coronary artery bypass grafting at a cardiology reference hospital. Historical cohort study with adult patients who underwent coronary artery bypass grafting. The analyzed variables were contemplated in the MagedanzSCORE: reoperation, chronic obstructive pulmonary disease (COPD), obesity, class IV unstable angina, polytransfusion therapy, mediastinitis and death as outcome variables. Of the 1.322 patients examined, 56 (4.2%) developed mediastinitis. Of these, 26 (46.4%) were classified as high risk for mediastinitis and 15 (26.8%) at very high risk for mediastinitis. Three of the five variables of the Magendanz Score showed statistically significant differences: reoperation, COPD and obesity. Class IV unstable angina and postoperative polytransfusion were not associated with mediastinitis after coronary artery by-pass grafting. The area under the ROC curve was 0.80 (CI 95% 0.73 - 0.86), indicating the model's satisfactory ability to predict the occurrence of mediastinitis. The tool was useful in the preoperative assessment demonstrating the risk for mediastinitis in this population of intensive care patients. (Arq Bras Cardiol. 2017; [online].ahead print, PP.0-0). A mediastinite é uma complicação cirúrgica grave de baixa incidência, porém com alto poder de letalidade. Escores utilizados no período pré-operatório para estratificar o risco de sua ocorrência podem contribuir para melhorar os resultados. Testar a aplicabilidade do MagedanzSCORE em prever risco de mediastinite em pacientes submetidos à cirurgia de revascularização do miocárdio (CRM) em um hospital de referência em cardiologia. Estudo de coorte hist

  20. [Understanding depressive symptoms after bariatric surgery: the role of weight, eating and body image].

    PubMed

    Sousa, Paula; Bastos, Ana Pinto; Venâncio, Carla; Vaz, Ana Rita; Brandão, Isabel; Costa, José Maia; Machado, Paulo; Conceição, Eva

    2014-01-01

    Introdução: A sintomatologia depressiva tem-se revelado prevalente após a cirurgia bariátrica. Este estudo teve como objetivo compreender o papel do peso, alimentação e imagem corporal na sintomatologia depressiva após realização da cirurgia bariátrica. Material e Métodos: Segue um design transversal e possui uma amostra pós-cirúrgica de 52 indivíduos, com um tempo de follow-up entre os 22 e os 132 meses. A avaliação foi realizada através de duas entrevistas clínicas semiestruturadas, incluindo a perturbação de comportamento alimentar (Eating Disorder Examination), e de três instrumentos de autorrelato: Outcome Questionnaire 45 - comprometimento psicológico geral, Beck Depression Inventory - sintomatologia depressiva e Body Shape Questionnaire - imagem corporal. Resultados: Os resultados mostram que a sintomatologia depressiva está associada à ingestão alimentar compulsiva, à preocupação com a imagem corporal e à percentagem do índice de massa corporal ganho. Segundo os resultados da análise de regressão linear múltipla que incluiu estas variáveis, a percentagem de índice de massa corporal ganho após cirurgia, a ingestão alimentar compulsiva e a preocupação com a imagem corporal são os factores que explicam 50% da variância da sintomatologia depressiva após a cirurgia, sendo a preocupação com a imagem corporal mais significativo, na medida em que uma maior insatisfação com a imagem corporal está associada a mais sintomas depressivos. Discussão: Os resultados deste estudo mostraram que um subgrupo de doentes apresenta um aumento de peso significativo após a cirurgia bariátrica que está associado a episódios de ingestão alimentar compulsiva, a preocupações com a imagem corporal e a sintomatologia depressiva. Conclusão: Estes resultados enfatizam a importância de considerar estas preocupações com a imagem corporal na avaliação psicológica da pessoa que fez cirurgia bariátrica de modo a otimizar o seu

  1. [231 laparoscopic cholecystectomy in ambulatory: what results?].

    PubMed

    Goulart, André; Delgado, Margarida; Antunes, Maria Conceição; Braga Dos Anjos, João

    2013-01-01

    Introdução: A colecistectomia laparoscópica é actualmente o gold standard no tratamento da patologia litiásica vesicular e colecistite aguda. A sua realização em regime de cirurgia de ambulatório permanece em discussão. O presente estudo tem por objectivo analisar a qualidade e segurança das colecistectomias laparoscópicas realizadas pela Unidade de Cirurgia de Ambulatório do Hospital de Braga e comparar os resultados com outros centros europeus que realizam colecistectomia laparoscópica em regime de ambulatório.Material e Métodos: Estudo observacional prospectivo de doentes submetidos a colecistectomia laparoscópica em regime de ambulatório durante 26 meses. Foram recolhidos dados referentes à demografia do doente, complicações peri e pós-operatórias, tempo cirúrgico e tempo de permanência no recobro e internamentos não programados.Resultados: Foram submetidos a colecistectomia laparoscópica em regime de ambulatório com pernoita (alta < 24h) 231 doentes. Três doentes tiveram intercorrências intra-operatórias com necessidade de conversão para laparotomia e quatro doentes foram internados após a cirurgia. O tempo médio de cirurgia foi de 58 minutos e o tempo médio de recobro de 19h19m. A morbilidade pósoperatória foi de 7,8% tendo, ocorrido dois internamentos não programados.Discussão: Uma das discussões que existe em torno da colecistectomia laparoscópica em regime de ambulatório é a necessidade de vigilância hospitalar durante a primeira noite após a cirurgia. Na nossa unidade, iniciamos a realização da colecistectomia laparoscópica em regime de ambulatório com pernoita hospitalar. Os resultados de mais de dois anos e 231 doentes operados a colecistectomia laparoscópica mostram que é uma técnica perfeitamente segura em regime de ambulatório.Conclusões: Os dados do estudo mostram que a colecistectomia laparoscópica é uma técnica segura em regime de ambulatório, com resultados semelhantes comparativamente com

  2. [Informed Treatment Consent and Refusal in Advanced Endonasal Surgery: The Ethical Dilemma of Olfaction Sacrifice in Surgery for Chronic Rhinosinusitis with Polyposis].

    PubMed

    Subtil, João; Araújo, João Pedro; Saraiva, José; Santos, Alberto; Vera-Cruz, Paulo; Paço, João; Pais, Diogo

    2015-01-01

    Introdução: Na rino-sinusite crónica com pólipos, ou polipose naso-sinusal, o olfacto está frequentemente afectado de forma significativa, e é reconhecido o impacto importante deste sintoma na qualidade vida. A resolução por cirurgia endonasal nos casos de resistência à terapêutica médica máxima é uma opção para minorar os sintomas, mas a sua extensão é alvo de controvérsia, sendo que uma cirurgia mais radical, como a nasalização, controla melhor a doença com menos recidivas, mas pode comprometer mais o olfacto. A decisão da extensão da cirurgia deve ser partilhada com o doente, devendo o esclarecimento informado ser tão completo quanto possível quanto às expectativas de controlo da doença como à resolução da hipósmia. Material e Métodos: Revisão bibliográfica e discussão por quadro de peritos. Resultados e Discussão: Baseando-nos em revisão de literatura, apresentamos uma proposta de elementos a incluir no esclarecimento cirúrgico, de modo a contemplar de forma abrangente as limitações da cirurgia no que diz respeito ao sintoma anósmia, bem como das diferentes opções e suas consequências quanto à sua radicalidade, focando a atenção no ponto de vista da ética médica. Conclusão: A decisão da extensão da cirurgia deve ser partilhada com o doente, devendo o esclarecimento informado ser tão completo quanto possível quanto às expectativas de controlo da doença como à resolução da hipósmia.

  3. Basic Concepts of Astronomy: a Methodological Proposal. (Spanish Title: Conceptos Básicos de Astronomía: Una Propuesta Metodológica.) Conceitos Básicos de Astronomia: Uma Proposta Metodológica

    NASA Astrophysics Data System (ADS)

    Darroz, Luiz Marcelo; Heineck, Renato; Samudio Pérez, Carlos Ariel

    2011-12-01

    obtenidos en diferentes momentos, por los comentarios efectuados por los participantes durante las actividades y por los altos índices de aprobación al final de la etapa, consideramos que la propuesta atingió los objetivos establecidos y puede ser repetida con certeza de éxito. Neste relato, descreve-se o desenvolvimento de uma proposta metodológica que aborda conceitos básicos de astronomia fundamentada pedagogicamente na Aprendizagem Significativa. A proposta, que compreende quatro encontros, foi desenvolvida por professores e acadêmicos do curso de Licenciatura em Física da Universidade de Passo Fundo (UPF), através de um curso de extensão, a um grupo de dez estudantes do ensino médio de uma escola pública da cidade de Passo Fundo, RS. O trabalho centrou-se em conceitos básicos de astronomia. Os indícios da aprendizagem significativa foram obtidos por instrumentos de pesquisa e avaliação aplicados ao término de cada encontro. A avaliação da proposta foi efetuada através de um questionário final respondido pelos participantes ao término do desenvolvimento das atividades. Pelos resultados obtidos nos diferentes instrumentos, pelos comentários efetuados pelos participantes durante as atividades e pelos altos índices de aprovação alcançados no questionário final, consideramos que a proposta atingiu os objetivos estabelecidos e pode ser repetida com convicção de sucesso.

  4. A Proposed Activity for a Meaningful Learning about the Moon Phases. (Breton Title: Uma Proposta de Atividade Para a Aprendizagem Significativa sobre as Fases da Lua.) Una Actividad Propuesta Para EL Aprendizaje Significativo Acerca de Las Fases de la Luna

    NASA Astrophysics Data System (ADS)

    Martins, Bruno Andrade; Langhi, Rodolfo

    2012-12-01

    This paper presents one of the concepts of Astronomy and its consequent failure in teaching this topic in high school, even when the official documents point out the necessity of Astronomy teaching at this school level. Among the spontaneous conceptions in Astronomy that high school students carry with them, even after the end of the school, we emphasized in this research the Moon phases. The development of different strategies in relation to traditional methods, aimed to teaching-learning process on this topic was considered in this study. These strategies were devised based on the reference frame of the Meaningful Learning, as elaborated by Ausubel. The proposals presented here include the active participation of students in experimental activities and other didactic activities, for their continuous evaluation during the process. These activities finished with a Comics elaboration about the Moon phases. Therefore, the objective of this paper is to present a proposal for differentiated teaching activity about Moon phases supported by the theoretical principles of Meaningful Learning at Physics classes. Este texto foca um dos conteúdos de Astronomia e a consequente falha no ensino deste tema no ensino médio, apesar de os documentos oficiais apresentarem a necessidade de se trabalhar a Astronomia neste nível de ensino. Dentre as concepções alternativas em Astronomia que os alunos do ensino médio carregam consigo, mesmo após o término dos estudos, destacamos, nesta pesquisa, o fenômeno das fases da Lua. O desenvolvimento de estratégias diferenciadas em relação ao ensino tradicional, visando o processo de ensino-aprendizagem sobre este tema, foi contemplado neste trabalho como um dos resultados obtidos sob a luz dos referenciais da aprendizagem significativa, fundamentados em Ausubel. Segundo a proposta aqui apresentada, a participação ativa dos alunos na execução de uma atividade experimental e outras atividades didáticas, que visam sua cont

  5. Portuguese and the Computer: "uma bossa nova".

    ERIC Educational Resources Information Center

    Kelly, John R.

    This paper describes the process of preparing a computer study of Brazilian Portuguese literary texts to be used both in teaching and in the preparation of a reference text. Procedural difficulties encountered in the project point out the potential and limitations of computerized research in literary studies. Seven possible areas for computer…

  6. Pleuroparenchymal fibroelastosis: report of two cases in Brazil.

    PubMed

    Gomes, Paula Silva; Shiang, Christina; Szarf, Gilberto; Coletta, Ester Nei Aparecida Martins; Pereira, Carlos Alberto de Castro

    2017-01-01

    Pleuroparenchymal fibroelastosis (PPFE) is a rare lung disease. It can be idiopathic or associated with any one of various conditions. To our knowledge, this is the first report of two cases of PPFE in Brazil. Our first patient presented with pleural and subpleural fibrosis in the upper lobes; a spiculated nodule in the left upper lobe; and a mild reticular pattern in the lower lobes. Surgical lung biopsy revealed PPFE in the upper lobes, including the nodule, and unclassified interstitial pneumonia in the left lower lobe. Our second patient had a history of exposure to domestic birds, indicating a risk of hypersensitivity pneumonitis, and presented with advanced lung disease, predominantly in the upper lobes, together with subpleural fibrosis.That patient underwent lung transplantation. In the explant specimen, PPFE and granulomas were identified, suggesting hypersensitivity pneumonitis as an associated cause. RESUMO A fibroelastose pleuroparenquimatosa (FEPP) é uma doença pulmonar rara, podendo ser idiopática ou associada a diversas condições. Pelo que sabemos, este é o primeiro relato de dois casos de FEPP no Brasil. Nosso primeiro paciente apresentava fibrose pleural e subpleural nos lobos superiores, um nódulo espiculado no lobo superior esquerdo e um padrão reticular discreto nos lobos inferiores. A biópsia pulmonar cirúrgica demonstrou FEPP nos lobos superiores, incluindo no nódulo, e pneumonia intersticial não classificada no lobo inferior esquerdo. Nosso segundo paciente tinha história de exposição a aves domésticas, indicando um risco de pneumonite de hipersensibilidade, e doença pulmonar avançada predominando em lobos superiores, com fibrose subpleural. Esse paciente foi submetido a transplante pulmonar. No espécime do explante, FEPP e granulomas foram identificados, sugerindo pneumonite de hipersensibilidade como causa associada.

  7. [Pulmonar pseudotumor in granulomatosis with polyangiitis (GPA). Pulmonary cancer and/or GPA? Diagnostic implications of pulmonary nodules].

    PubMed

    Horta-Baas, Gabriel; Meza-Zempoaltecatl, Esteban; Pérez-Cristóbal, Mario; Barile-Fabris, Leonor Adriana

    2016-01-01

    Granulomatosis with polyangiitis (GPA), formerly known as Wegener's granulomatosis, is a systemic necrotizing vasculitis, which affects small and medium sized blood vessels and is often associated with cytoplasmic anti-neutrophil cytoplasmic antibodies (ANCA). Inflammatory pseudotumor is a rare condition characterized by the appearance of a mass lesion that mimics a malignant tumor both clinically and on imaging studies, but that is thought to have an inflammatory/reactive pathogenesis. We report a patient with a GPA which was originally diagnosed as malignancy.

  8. [Type 2 Diabetes Mellitus, Depression and Eating Disorders in Patients Submitted to Bariatric Surgery].

    PubMed

    Brandão, Isabel; Marques Pinho, Ana; Arrojado, Filipa; Pinto-Bastos, Ana; Maia da Costa, José; Coelho, Rui; Calhau, Conceição; Conceição, Eva

    2016-03-01

    Introdução: A obesidade associa-se a um elevado número de comorbilidades, entre as quais a diabetes mellitus tipo 2 e a patologia psiquiátrica. A cirurgia bariátrica tem demonstrado ser a melhor solução para a perda de peso e a melhoria das complicações nos casos de obesidade mórbida. O objetivo deste estudo é o de analisar a evolução da diabetes mellitus tipo 2 e de variáveis psicopatológicas antes e depois da cirurgia bariátrica e verificar o seu impacto na perda de peso. Material e Métodos: É um estudo longitudinal, que avalia 75 indivíduos antes e depois de serem submetidos a cirurgia bariátrica (47 - banda gástrica; 19 - bypass Roux-en-Y gástrico; 9 - sleeve gástrico), com tempo de follow-up entre 18 e 46 meses. Os instrumentos de avaliação foram a entrevista clínica e os questionários Eating Disorder Examination questionnaire - EDE-Q e Beck Depression Inventory - BDI. Resultados: Verificou-se melhoria relativamente à variável dicotómica diabetes mellitus tipo 2 após a cirurgia (X(1) = 26,132, p < 0,001). Não ocorreu melhoria significativa em termos de patologia psiquiátrica quando a análise foi controlada para o tipo de cirurgia. Encontrámos uma associação significativa entre as variáveis em estudo no pós-cirúrgico e a perda de peso. Este modelo explica 27% da variação do peso após a cirurgia (R2 = 0,265) e é significativo F (3,33) = 2,981, p = 0,038. Discussão: A diabetes mellitus tipo 2, patologia depressiva ou do comportamento alimentar mostraram estar relacionados com a perda de peso. Não ficou esclarecido em que sentido esta relação é estabelecida, nem a relação que estas variáveis metabólicas e psicológicas possam ter entre si ao longo do período pós cirurgia bariátrica. Conclusão: A diabetes mellitus tipo 2 evoluiu favoravelmente após a cirurgia. Diabetes mellitus tipo 2, depressão e patologia alimentar no período pós-cirúrgico associaram-se a menor perda de peso. As variáveis estudadas no

  9. Economic analysis of rivaroxaban for the treatment and long-term prevention of venous thromboembolism in Portugal.

    PubMed

    Santos, Isabel Fonseca; Pereira, Sónia; McLeod, Euan; Guillermin, Anne-Laure; Chatzitheofilou, Ismini

    2014-01-01

    Introdução: O tromboembolismo venoso representa uma carga substancial para os sistemas de saúde. O objectivo foi estimar os resultados clínicos e económicos a longo-prazo associados a rivaroxabano relativamente à prática clínica (enoxaparina/varfarina) no tratamento e prevenção secundária de tromboembolismo venoso em Portugal.Material e Métodos: Foi desenvolvido um modelo de Markov baseado nos ensaios clínicos EINSTEIN e dados da literatura para complicações a longo-prazo. Foram avaliados custos e anos de vida ajustados pela qualidade de vida totais e incrementais e rácio custo-efectividade incremental. As indicações trombose venosa profunda e embolismo pulmonar foram analisados separadamente. Adoptou-se a perspectiva da sociedade portuguesa e um horizonte temporal de cinco anos. Aplicou-se uma taxa de actualização de cinco por cento para custos e consequências. Foram desenvolvidas análises de sensibilidade e diversas análises de cenário para avaliação da variação dos resultados em função de determinados pressupostos.Resultados: Rivaroxabano está associado a menores custos na trombose venosa profunda e constitui uma alternativa associada a menores custos e a maior eficácia no tratamento de embolismo pulmonar, relativamente a enoxaparina/varfarina.Discussão: O recurso a um painel de peritos para identificação de alguns recursos e a ausência de utilidades específicas para Portugal constituem as principais limitações.Conclusão: Rivaroxabano constitui uma alternativa eficaz, estando associado a menores custos (para ambas as indicações) e a mais anos de vida ajustados pela qualidade de vida (para embolismo pulmonar) relativamente a enoxaparina/varfarina em Portugal.

  10. Anatomic pulmonary resection by video-assisted thoracoscopy: the Brazilian experience (VATS Brazil study).

    PubMed

    Terra, Ricardo Mingarini; Kazantzis, Thamara; Pinto-Filho, Darcy Ribeiro; Camargo, Spencer Marcantonio; Martins-Neto, Francisco; Guimarães, Anderson Nassar; Araújo, Carlos Alberto; Losso, Luis Carlos; Ghefter, Mario Claudio; Lima, Nuno Ferreira de; Gomes-Neto, Antero; Brito-Filho, Flávio; Haddad, Rui; Saueressig, Maurício Guidi; Lima, Alexandre Marcelo Rodrigues; Siqueira, Rafael Pontes de; Pinho, Astunaldo Júnior de Macedo E; Vannucci, Fernando

    2016-01-01

    The objective of this study was to describe the results of anatomic pulmonary resections performed by video-assisted thoracoscopy in Brazil. Thoracic surgeons (members of the Brazilian Society of Thoracic Surgery) were invited, via e-mail, to participate in the study. Eighteen surgeons participated in the project by providing us with retrospective databases containing information related to anatomic pulmonary resections performed by video-assisted thoracoscopy. Demographic, surgical, and postoperative data were collected with a standardized instrument, after which they were compiled and analyzed. The surgeons provided data related to a collective total of 786 patients (mean number of resections per surgeon, 43.6). However, 137 patients were excluded because some data were missing. Therefore, the study sample comprised 649 patients. The mean age of the patients was 61.7 years. Of the 649 patients, 295 (45.5%) were male. The majority-521 (89.8%)-had undergone surgery for neoplasia, which was most often classified as stage IA. The median duration of pleural drainage was 3 days, and the median hospital stay was 4 days. Of the 649 procedures evaluated, 598 (91.2%) were lobectomies. Conversion to thoracotomy was necessary in 30 cases (4.6%). Postoperative complications occurred in 124 patients (19.1%), the most common complications being pneumonia, prolonged air leaks, and atelectasis. The 30-day mortality rate was 2.0%, advanced age and diabetes being found to be predictors of mortality. Our analysis of this representative sample of patients undergoing pulmonary resection by video-assisted thoracoscopy in Brazil showed that the procedure is practicable and safe, as well as being comparable to those performed in other countries. O objetivo deste estudo foi descrever os resultados de ressecções pulmonares anatômicas por videotoracoscopia no Brasil. Cirurgiões torácicos (membros da Sociedade Brasileira de Cirurgia Torácica) foram convidados, por correio eletr

  11. [Bronchopleurocutaneous Fistula: A Rare Complication of Pulmonary Tuberculosis].

    PubMed

    Montez, Ana Sofia José; Coutinho, Daniel; Velez, Jorge; Freitas, Filomena; Oliveira, Célia

    2015-01-01

    Introdução: A tuberculose pulmonar pode cursar com diversas complicações. As fístulas bronco-pleuro-cutâneas consistem em comunicações anormais entre o brônquio, o espaço pleural e a pele.Caso Clínico: Apresentamos o caso de um homem, 47 anos, esquizofrénico, enviado ao Serviço de Urgência por toracalgia esquerda, tosse produtiva e emagrecimento. Apresentava-se caquético, sendo evidente um orifício cutâneo torácico latero-anterior esquerdo com drenagem purulenta, na qual o exame direto revelou bacilos ácido-álcool resistentes. A radiografia torácica evidenciava infiltrado heterogéneo bilateral. Foi internado com o diagnóstico de tuberculose pulmonar fistulizada. Na expetoração, a pesquisa de bacilos ácido-álcool resistentes foi igualmente positiva, sendo evidenciado Mycobacterium tuberculosis por reação de polimerase em cadeia e exame cultural. Iniciou terapêutica antituberculosa quádrupla apresentando evolução clínica favorável.Conclusões: A formação de fístulas bronco-pleuro-cutâneas é atualmente e em países desenvolvidos, uma complicação rara de tuberculose pulmonar. Assim, apesar da tuberculose ser frequente em Portugal, a raridade deste tipo de complicações torna pertinente a apresentação deste caso clínico.

  12. Effects of positive expiratory pressure on pulmonary clearance of aerosolized technetium-99m-labeled diethylenetriaminepentaacetic acid in healthy individuals.

    PubMed

    Albuquerque, Isabella Martins de; Cardoso, Dannuey Machado; Masiero, Paulo Ricardo; Paiva, Dulciane Nunes; Resqueti, Vanessa Regiane; Fregonezi, Guilherme Augusto de Freitas; Menna-Barreto, Sérgio Saldanha

    2016-01-01

    To evaluate the effects of positive expiratory pressure (PEP) on pulmonary epithelial membrane permeability in healthy subjects. We evaluated a cohort of 30 healthy subjects (15 males and 15 females) with a mean age of 28.3 ± 5.4 years, a mean FEV1/FVC ratio of 0.89 ± 0.14, and a mean FEV1 of 98.5 ± 13.1% of predicted. Subjects underwent technetium-99m-labeled diethylenetriaminepentaacetic acid (99mTc-DTPA) radioaerosol inhalation lung scintigraphy in two stages: during spontaneous breathing; and while breathing through a PEP mask at one of three PEP levels-10 cmH2O (n = 10), 15 cmH2O (n = 10), and 20 cmH2O (n = 10). The 99mTc-DTPA was nebulized for 3 min, and its clearance was recorded by scintigraphy over a 30-min period during spontaneous breathing and over a 30-min period during breathing through a PEP mask. The pulmonary clearance of 99mTc-DTPA was significantly shorter when PEP was applied-at 10 cmH2O (p = 0.044), 15 cmH2O (p = 0.044), and 20 cmH2O (p = 0.004)-in comparison with that observed during spontaneous breathing. Our findings indicate that PEP, at the levels tested, is able to induce an increase in pulmonary epithelial membrane permeability and lung volume in healthy subjects. Avaliar os efeitos da pressão expiratória positiva (PEP) na permeabilidade da membrana epitelial pulmonar em indivíduos saudáveis. Foi avaliada uma coorte de 30 indivíduos saudáveis (15 homens e 15 mulheres), com média de idade de 28,3 ± 5,4 anos, média da relação VEF1/CVF de 0,89 ± 0,14 e média de VEF1 de 98,5 ± 13,1% do previsto. Os indivíduos foram submetidos a cintilografia pulmonar por inalação de radioaerossol de ácido dietilenotriaminopentacético marcado com tecnécio-99m (99mTc-DTPA em inglês) em dois estágios: durante respiração espontânea e durante respiração com uma máscara de PEP de 10 cmH2O (n = 10), 15 cmH2O (n = 10) ou 20 cmH2O (n = 10). O 99mTc-DTPA foi nebulizado por 3 min, e sua depuração foi registrada por cintilografia por um

  13. Analysis of the Presence of Content about Astronomy in a Decade of the National High School Examination (1998-2008). (Spanish Title: Análisis de la Presencia de Contenidos de Astronomía em Uma Década del Examen Nacional de Enseñaza Secundária (1998-2008).) Análise da Presença de Conteúdos de Astronomia em Uma DÉcada do Exame Nacional do Ensino Médio (1998-2008)

    NASA Astrophysics Data System (ADS)

    Gomide, Hanny Angeles; Longhini, Marcos Daniel

    2011-07-01

    In this paper we analyzed the presence of contents of Astronomy in the National High School Examination (ENEM) in its first decade (1998-2008). We verified the number of questions addressing this topic that were present over the years, as well as the most recurrent subjects. We discussed the results from what is proposed by the official documents regarding the teaching of Astronomy in the Elementary and Secondary Education and we entertain future expectations about the presence of contents of this science in future official examinations. En este trabajo realizamos un análisis de la presencia de contenidos de Astronomía em las pruebas del Examen Nacional de Enseñanza Secundaria (ENEM) em su primera década de existência (1998-2008). Contabilizamos la cantidad de preguntas incluyendo este tema que estuvieron presentes en el transcurso de los años, así como los temas más recurrentes. Discutimos los resultados a partir de lo propuesto por los documentos oficiales en relación a la enseñanza de Astronomía en la Educación Básica y elaboramos algunos apuntes sobre futuras expectativas em relación a la presencia de contenidos de esta ciencia en examenes oficiales. No presente trabalho fizemos uma análise da presença de conteúdos de Astronomia nas provas do Exame Nacional do Ensino Médio (ENEM), em sua primeira década de existência (1998-2008). Verificamos a quantidade de questões envolvendo essa temática que estiveram presentes no decorrer dos anos, assim como os temas mais recorrentes. Discutimos os resultados a partir do que é proposto pelos documentos oficiais em relação ao ensino de Astronomia na Educação Básica e tecemos alguns apontamentos sobre a expectativa futura quanto à presença de conteúdos dessa ciência nesse exame oficial.

  14. ROBOTIC SURGERY: BIOETHICAL ASPECTS.

    PubMed

    Siqueira-Batista, Rodrigo; Souza, Camila Ribeiro; Maia, Polyana Mendes; Siqueira, Sávio Lana

    2016-01-01

    The use of robots in surgery has been increasingly common today, allowing the emergence of numerous bioethical issues in this area. To present review of the ethical aspects of robot use in surgery. Search in Pubmed, SciELO and Lilacs crossing the headings "bioethics", "surgery", "ethics", "laparoscopy" and "robotic". Of the citations obtained, were selected 17 articles, which were used for the preparation of the article. It contains brief presentation on robotics, its inclusion in health and bioethical aspects, and the use of robots in surgery. Robotic surgery is a reality today in many hospitals, which makes essential bioethical reflection on the relationship between health professionals, automata and patients. A utilização de robôs em procedimentos cirúrgicos tem sido cada vez mais frequente na atualidade, o que permite a emergência de inúmeras questões bioéticas nesse âmbito. Apresentar revisão sobre os aspectos éticos dos usos de robôs em cirurgia. Realizou-se revisão nas bases de dados Pubmed, SciELO e Lilacs cruzando-se os descritores "bioética", "cirurgia", "ética", "laparoscopia" e "robótica". Do total de citações obtidas, selecionou-se 17 artigos, os quais foram utilizados para a elaboração do artigo. Ele contém breve apresentação sobre a robótica, sua inserção na saúde e os aspectos bioéticos da utilização dos robôs em procedimentos cirúrgicos. A cirurgia robótica é uma realidade, hoje, em muitas unidades hospitalares, o que torna essencial a reflexão bioética sobre as relações entre profissionais da saúde, autômatos e pacientes.

  15. Periprosthetic humeral fractures after reverse shoulder arthroplasty. Case report.

    PubMed

    Wajnsztejn, Andre; Foni, Noel Oizerovici; Oizerovici, Dan; Pires, Robinson Esteves Santos; Ejnisman, Benno

    2017-09-21

    Periprosthetic fractures is a severe complication after joint replacement. The rapidly increase of reverse shoulder arthroplasty surgeries, periprosthetic humeral fractures, which are described as rare, may increase in the near future. We report the case of displaced humeral fracture bellow the stem of reverse shoulder prosthesis. The patient was an 85-year-old woman who had a total shoulder replacement 6 years previously. The surgical solution consisted of plate osteossynthesis and cerclage. This report describes an unprecedented case in Brazilian literature; and gives an overview of the existing literature including this injury classification. RESUMO As fraturas periprotéticas do ombro representam uma grave complicação após a substituição da articulação. Devido ao rápido aumento do número de cirurgias de artroplastia reversa no ombro, as fraturas periprótese do úmero, descritas como raras, podem aumentar no futuro próximo. Descrevemos um caso de fratura desviada do úmero abaixo do componente umeral de uma artroplastia reversa. A paciente era uma mulher de 85 anos de idade, que tinha uma artroplastia reversa do ombro há 6 anos. O tratamento cirúrgico consistiu em osteossíntese com placa, parafusos e cerclagem. Os objetivos do presente trabalho foram reportar um caso inédito na literatura brasileira, e revisar a literatura existente e as classificações da lesão.

  16. The Universe in a Box: Introduction to the Study of Astronomy in the Initial Formation of Physics Teachers. (Spanish Title: El Universo Representado en Una Caja: Introducción al Estudio de la Astronomía en la Formación Inicial de Profesores de Física.) O Universo Representado em Uma Caixa: Introdução ao Estudo da Astronomia NA Formação Inicial de Professores de Física

    NASA Astrophysics Data System (ADS)

    Longhini, Marcos Daniel

    2009-07-01

    This is a report of an activity of introduction to the study of Astronomy developed with a group of future Physics teachers at a Brazilian public university. Such activity had the goal of giving privileged emphasis to notions of spatiality, alternative conceptions of the participants and the process of interaction among peers, and consisted of the representation, in a three dimensional space, of the models of the universe that the participants had. The results, which were categorized as miscellaneous, geocentric, heliocentric and acentric models of the universe, were qualitatively analyzed. Analyses of the activity in the perspective of the participants are indicated and additional considerations are made regarding its use as a resource for teaching Astronomy and for teacher training. Este es el informe de una actividad para presentar un estudio introductorio de la Astronomía, desarrollado con una clase de futuros profesores de física en una universidad pública brasileña. Esta actividad tuvo como objetivo centrar las nociones de espacialidad, las concepciones alternativas de los participantes y el proceso de interacción entre pares, y consistió en la representación en un espacio tridimensional, de los modelos del universo que los participantes habían. Los resultados, que se clasificaron en universo miscelania, geocéntrico, heliocéntrico y acentrico, se analizaron cualitativamente. Son identificadas análisis de la actividad por los participantes, e hizo observaciones sobre su uso como recurso para la enseñanza de la astronomía y la formación de docentes. Trata-se do relato de uma atividade de introdução ao estudo da Astronomia, desenvolvida com uma turma de futuros professores de Física, em uma universidade pública brasileira. Tal atividade teve como meta privilegiar noções de espacialidade, as concepções alternativas dos participantes e o processo de interação entre pares e constou da representação, em um espaço tridimensional, dos

  17. Experience of the MALA bag in the open abdomen management in an obstetrical intensive care unit.

    PubMed

    Malagón Reyes, Ricardo Mauricio; Reyes Mendoza, Luis Emilio; Angeles Vásquez, María de Jesús; Mendieta Zerón, Hugo

    2013-01-01

    Introdução: As indicações atuais para a gestão de abdómen aberto são a cirurgia de controlo de danos, a abordagem de sepsis intraabdominal grave, a síndrome de compartimento abdominal, o encerramento da parede abdominal sob tensão e a perda de massa da parede abdominal.Objetivo: Descrever a experiência em gestão e cirurgias de abdómen aberto usando a bolsa MALA (Maior Absorção de Líquido Abdominal).Material e Métodos: Estudo descritivo, incluindo todos os doentes com o diagnóstico de abdómen aberto gerido com a bolsa MALA internados na Unidade de Cuidados Intensivos Obstétricos de Fevereiro de 2009 a Junho de 2012.Resultados: Dos 25 casos identificados no período do estudo, sete foram eliminados por arquivos incompletos, permanecendo 18 casos para a análise. A média de idade foi de 31,5 anos. Setenta e oito por cento dos doentes eram multíparas, 50% com uma história de dois ou mais partos, 83% com uma cesariana anterior e 78% histerectomizadas, por atonia uterina, na maioria dos casos. A principal indicação para tratamento cirúrgico foi o controlo de danos. Uma doente morreu e uma segunda foi transferida para outra instituição, tendo as demais tido melhoria clínica. Doze doentes (67%) permaneceram menos de 14 dias na Unidade de Cuidados Intensivos Obstétricos e apenas uma precisou de mais de 30 dias na unidade.Conclusão: A bolsa MALA pode oferecer uma opção económica e eficaz para a gestão cirúrgica abdominal aberta, bem como umatécnica de drenagem.

  18. Liver hydatid cyst leading to bilateral pulmonary artery embolism and bilateral multiple pulmonar echinococcosis via inferior vena cava: report of a case.

    PubMed

    Bayaroğullari, Hanifi; Davran, Ramazan; Cavuş, Yeliz; Yetim, Tülin Durgun; Evirgen, Ömer

    2013-01-01

    Hydatid disease (HD) is a worldwide parasitic disease. Echinococcosis may involve many organs but affect most commonly liver and lungs. The location of echinococcal cysts inside pulmonary artery is extremely rare. Radiologic findings range from purely cystic lesions to a completely solid appearance. Hydatid cysts (HC) can be solitary or multiple and varies size. Pulmonary artery embolism of HC can be symptomatic or asymptomatic. When symptomatic, we see the chest pain, dyspnea, cough, hemoptysis and sometimes acute cor pulmonale or sudden death secondary to massive giant pulmonary artery embolism of HC. Copyright © 2013 Elsevier Inc. All rights reserved.

  19. Frequency of self-reported COPD exacerbation and airflow obstruction in five Latin American cities: the Proyecto Latinoamericano de Investigacion en Obstruccion Pulmonar (PLATINO) study.

    PubMed

    Montes de Oca, Maria; Tálamo, Carlos; Halbert, Ronald J; Perez-Padilla, Rogelio; Lopez, Maria Victorina; Muiño, Adriana; Jardim, José Roberto B; Valdivia, Gonzalo; Pertuzé, Julio; Moreno, Dolores; Menezes, Ana Maria B

    2009-07-01

    Recurrent exacerbations are common in COPD patients. Limited information exists regarding exacerbation frequency in COPD patients from epidemiologic studies. We examined the frequency of self-reported exacerbations and the factors influencing exacerbation frequency among COPD patients in a population-based study conducted in Latin America. We used a post-bronchodilator FEV(1)/FVC ratio of < 0.70 to define COPD. Exacerbation was self-reported and defined by symptoms (deterioration of breathing symptoms that affected usual daily activities or caused missed work). Spirometry was performed in 5,314 subjects. There were 759 subjects with airflow limitation; of these, 18.2% reported ever having had an exacerbation, 7.9% reported having an exacerbation, and 6.2% reported having an exacerbation requiring at least a doctor visit within the past year. The proportion of individuals with an exacerbation significantly increased by Global Initiative for Chronic Obstructive Lung Disease (GOLD) stages, from 4.2% in stage 1 to 28.9% in stages 3 and 4. The self-reported exacerbation rate was 0.58 exacerbations per year. The rate of exacerbations requiring at least a doctor visit and length of stay in hospital due to exacerbations also increased as COPD severity progressed. The factors associated with having an exacerbation in the past year were dyspnea, prior asthma diagnosis, receiving any respiratory therapy, and disease severity of GOLD stages 3 and 4. The proportion of individuals with airflow limitation and self-reported exacerbation increases as the disease severity progresses. Dyspnea, prior asthma diagnosis, receiving any respiratory therapy, and more severe obstruction were significantly associated with having an exacerbation in the past year.

  20. STT Doubles with Large DM - Part II: Leo and UMa

    NASA Astrophysics Data System (ADS)

    Ahad, Abdul

    2016-02-01

    This paper documents the discovery of a new double star in Cygnus, currently not listed in the WDS catalog. On observed photometric and proper motion characteristics, calibration of distances, and other assumptions, it is concluded that the components comprise a wide gravitationally-bound visual binary system.

  1. Molecular Hydrogen in the Quiescent Disk of SW UMa

    NASA Technical Reports Server (NTRS)

    Raymond, John C.

    2004-01-01

    The FUSE observation has been reduced and a paper has been submitted to ApJ. The analysis has been slow because of the very noisy quality of the data, but we have derived line profile information for O VI and limits to the continuum brightness which place an interesting limit on the white dwarf temperature. The primary results are that a narrow O VI emission component seems to arise from the accretion flow onto the white dwarf itself, in agreement with cooling flow models for the X-ray spectra of low accretion rate dwarf novae. The broad component of the O VI lines is weaker than the observed C IV emission, suggesting that the UV line emission from the disk comes from photoionized plasma. A secondary result is that there is no H-2 fluorescent emission. The upper limits indicate that if molecular gas is present in the disk, it is shielded from Ly alpha photons by a layer of atomic hydrogen on the disk surface. We also derive an upper limit to the continuum level is below that observed by IUE. The limits are compatible with the lower end of the WD temperature range derived from IUE measurements, and they appear to agree with unpublished analysis of HST spectra. The grant has provided partial support for a data aide (Matt Povich) and a postdoc (Alex Lobel). It purchased a computer for M. Menou.

  2. Impact of long-term treatment with inhaled corticosteroids and bronchodilators on lung function in a patient with post-infectious bronchiolitis obliterans.

    PubMed

    Calabrese, Cecilia; Corcione, Nadia; Rea, Gaetano; Stefanelli, Francesco; Meoli, Ilernando; Vatrella, Alessandro

    2016-01-01

    Post-infectious bronchiolitis obliterans (PIBO) is a small airways disease characterized by fixed airflow limitation. Therefore, inhaled bronchodilators and corticosteroids are not recommended as maintenance therapy options. The management of PIBO currently consists only of close monitoring of affected patients, aimed at the prevention and early treatment of pulmonary infections. In recent years, there has been an increase in the incidence of PIBO in the pediatric population. Patients with PIBO are characterized by a progressive decline in lung function, accompanied by a decrease in overall functional capacity. Here, we report the case of a relatively young man diagnosed with PIBO and followed for three years. After short- and long-term therapy with an inhaled corticosteroid/long-acting 2 agonist combination, together with an inhaled long-acting antimuscarinic, the patient showed relevant improvement of airway obstruction that had been irreversible at the time of the bronchodilator test. The lung function of the patient worsened when he interrupted the triple inhaled therapy. In addition, a 3-week pulmonary rehabilitation program markedly improved his physical performance. RESUMO A bronquiolite obliterante pós-infecciosa (BOPI) é uma doença das pequenas vias aéreas caracterizada por limitação fixa do fluxo aéreo. Portanto, os broncodilatadores e os corticosteroides inalatórios não são recomendados como opções de terapia de manutenção. Atualmente, o manejo da BOPI consiste apenas de um acompanhamento rigoroso dos pacientes afetados, visando à prevenção e ao tratamento precoce de infecções pulmonares. A incidência de BOPI tem aumentado na população pediátrica nos últimos anos. Os pacientes com BOPI caracterizam-se por um declínio progressivo da função pulmonar, associado a uma diminuição da capacidade funcional global. Relatamos aqui o caso de um homem relativamente jovem diagnosticado com BOPI, acompanhado por três anos. Ap

  3. Robotic Transversus Abdominis Release (TAR): is it possible to offer minimally invasive surgery for abdominal wall complex defects?

    PubMed

    Amaral, Maria Vitória França DO; Guimarães, José Ricardo; Volpe, Paula; Oliveira, Flávio Malcher Martins DE; Domene, Carlos Eduardo; Roll, Sérgio; Cavazzola, Leandro Totti

    2017-01-01

    We describe the preliminary national experience and the early results of the use of robotic surgery to perform the posterior separation of abdominal wall components by the Transversus Abdominis Release (TAR) technique for the correction of complex defects of the abdominal wall. We performed the procedures between 04/2/2015 and 06/15/2015 and the follow-up time was up to six months, with a minimum of two months. The mean surgical time was five hours and 40 minutes. Two patients required laparoscopic re-intervention, since one developed hernia by peritoneal migration of the mesh and one had mesh extrusion. The procedure proved to be technically feasible, with a still long surgical time. Considering the potential advantages of robotic surgery and those related to TAR and the results obtained when these two techniques are associated, we conclude that they seem to be a good option for the correction of complex abdominal wall defects. RESUMO Descrevemos a experiência preliminar nacional na utilização da cirurgia robótica para realizar a separação posterior de componentes da parede abdominal pela técnica transversus abdominis release (TAR) na correção de defeitos complexos da parede abdominal e seus resultados precoces. As cirurgias foram realizadas entre 02/04/2015 e 15/06/2015 e o tempo de acompanhamento dos resultados foi de até seis meses, com tempo mínimo de dois meses. O tempo cirúrgico médio foi de cinco horas e 40 minutos. Dois pacientes necessitaram reintervenção por laparoscopia, pois um desenvolveu hérnia por migração peritoneal da tela e um teve escape da tela. A cirurgia provou ser factível do ponto de vista técnico, com um tempo cirúrgico ainda elevado. Tendo em vista as vantagens potenciais da cirurgia robótica e aquelas relacionadas ao TAR e os resultados obtidos ao se associar essas duas técnicas, conclui-se que elas parecem ser uma boa opção para a correção de defeitos complexos da parede abdominal.

  4. Pulmonary function in children and adolescents with sickle cell disease: have we paid proper attention to this problem?

    PubMed

    Vieira, Ana Karine; Alvim, Cristina Gonçalves; Carneiro, Maria Cristina Marquez; Ibiapina, Cássio da Cunha

    2016-01-01

    8; (12,5%) e distúrbio respiratório obstrutivo, em 7 (10,9%). Dos 69 pacientes submetidos ao teste de caminhada de seis minutos, 18 (26,1%) apresentaram resultados alterados na distância em % do previsto para a idade, e houve uma queda ≥ 3% na SpO2 em 36 (52,2%) dos pacientes. Não houve associações significativas entre função pulmonar alterada e as outras variáveis analisadas, exceto para hipoxemia e distúrbio ventilatório restritivo. Observou-se uma significativa prevalência de alterações na função pulmonar nesta amostra de crianças e adolescentes com doença falciforme. A elevada prevalência de distúrbios ventilatórios sugere a necessidade de um olhar mais atento à função pulmonar desde a infância nessa população.

  5. [Deep Vein Thrombosis Prophylaxis in Patients with Traumatic Brain Injury].

    PubMed

    Silva, Vinícius Trindade Gomes da; Iglesio, Ricardo; Paiva, Wellingson Silva; Siqueira, Mario Gilberto; Teixeira, Manoel Jacobsen

    2015-01-01

    Introdução: O risco de trombose venosa profunda encontra-se aumentado em doentes vítimas de traumatismo cranioencefálico, mas a profilaxia da trombose venosa profunda se confronta com o possível risco de piora de lesões hemorrágicas relacionados ao traumatismo cranioencefálico. Neste artigo apresentamos uma revisão crítica do tema e propomos um protocolo de profilaxia para estes doentes.Material e Métodos: Foi realizada uma pesquisa na base de dados Medline/PubMed, Cochrane, e Scielo de janeiro de 1998 a janeiro de 2014 com a expressão de busca âÄúdeep venous thrombosis and prophylaxis and traumatic brain injuryâÄù. Foram encontrados 44 artigos usando os termos MeSH definidos. Destes foram selecionados 23 artigos, usando como critérios: publicação em inglês ou português, fase aguda do traumatismo cranioencefálico moderado e grave, profilaxia mecânica não invasiva ou química.Resultados: O traumatismo cranioencefálico é um fator de risco para trombose venosa profunda e tromboembolismo pulmonar. A chance de trombose venosa profunda é 2,59 vezes maior em doentes com traumatismo cranioencefálico. A prevalência de trombose venosa profunda e embolia pulmonar em doentes que sofreram traumatismo cranioencefálico é de 20%, podendo atingir 30% dos doentes em alguns estudos.Discussão e Conclusão: As diversas formas de traumatismo de forma isolada constituem fator de risco para trombose venosa profunda e tromboembolismo pulmonar. Ensaios clínicos são necessários para estabelecer a eficácia da profilaxia e o melhor momento de iniciar medicação para trombose venosa profunda em doentes com traumatismo craniencefálico.

  6. SURGERY AND CARDIOVASCULAR SURGERY JOURNALS ANALYSIS.

    PubMed

    Schanaider, Alberto

    2015-01-01

    To analyze critically the effectiveness and value of bibliometric indicators in journals of Surgery or Cardiovacular Surgery in the context of the postgraduate programs of CAPES Medicine III. A sampling with 16 academic programs and one professional master of Medicine III, encompassing the General and Digestive System Surgery, Cardiovascular Surgery and Multidisciplinary courses with such contents, was evaluated. Thomson Reuters/ISI (JCR), Elsevier/Scopus (SJR), and also Scielo databases were used. Only in seven programs, the teachers had an average of Qualis A1 articles greater than the others strata. Eleven journals in the surgical area are in stratum A1 (5%) and it reaches 25% in Cardiovascular Surgery. Among the six journals with the largest number of publications Qualis A1 in area Medicine III, five are from non-specific areas. The Acta Cirúrgica Brasileira represented 58% of the publications in the stratum A2. There are some obstacles in the Qualis classification with little uniformity among the Medicine areas I, II and III. A permanent committee should be set to update the Qualis, composed by the three medical areas. It should be considered using other index databases and the unification of the Qualis criteria for journals in medicine. Rating criteria of multi and transdisciplinary journals need to be reviewed. It is essential an institutional financial support for national journals chosen by peers aiming to provide a full computerization process and a professional reviewer of the English language, in order to increase the impact factor. Analisar criticamente a eficácia e valor de indicadores bibliométricos dos periódicos da Cirurgia e Cirurgia Cardiovascular no contexto dos Programas de Pós-Graduação da área Medicina III da CAPES. Foi avaliada uma amostragem com 16 programas acadêmicos e um mestrado profissional da área de Medicina III, compreendendo a Cirurgia Geral e do Aparelho Digestivo, a Cirurgia Cardiovascular e Cursos Multidisciplinares

  7. The Understanding of Astronomy Concepts by Students from Basic Education of a Public School. (Spanish Title: El Entendimiento de Conceptos de Aastronmía Por Los Alumnos de Educación Básica en Una Escuela Pública.) O Entendimento de Conceitos de Astronomia Por Alunos da Educação Básica: O Caso de Uma Escola Pública Brasileira

    NASA Astrophysics Data System (ADS)

    Iria Machado, Daniel; dos Santos, Carlos

    2011-07-01

    movimiento de la Luna, el movimiento aparente del Sol sobre la esfera celeste, los eclipses, las dimensiones y las distancias en el Universo, el brillo de las estrellas y su observación de la Tierra. Si bien ha habido un pequeño progreso en la proporción de respuestas aceptables científicamente cuando se cotejó el octavo grado de la enseñanza primaria con el quinto, y el último año de la enseñanza secundaria con el primero, se observó un predominio de las concepciones alternativas en relación a la mayoría de los temas explorados, que continuó hasta los últimos años de la educación básica. Una comparación con los datos encontrados en investigaciones realizadas en otros contextos socioculturales revelaron, en muchos aspectos, conceptos y dificultades similares expresadas por los estudiantes. Apresentam-se os resultados de uma investigação sobre a compreensão de conceitos astronômicos básicos, da qual participaram 561 estudantes da quinta série do Ensino Fundamental ao terceiro ano do Ensino Médio de uma escola pública da cidade de Foz do Iguaçu. Um teste com 20 questões de múltipla escolha foi aplicado para identificar as concepções mais comuns expressadas pelos alunos. Esse instrumento de coleta de dados foi elaborado com base na literatura sobre concepções alternativas e abordou os seguintes temas: o ciclo dia-noite; os fusos horários; as estações do ano; as fases da Lua; o movimento da Lua; o movimento aparente do Sol na esfera celeste; os eclipses; as dimensões e distâncias no Universo; o brilho das estrelas e sua observação da Terra. Embora se tenha verificado um pequeno progresso na proporção de respostas cientificamente aceitáveis ao se cotejar a oitava série do Ensino Fundamental com a quinta, e a terceira série do Ensino Médio com a primeira, houve o predomínio de concepções alternativas em relação à maior parte dos temas explorados, as quais persistiram até o último ano da Educação Básica. A comparação com

  8. THE ALCOHOL CONSUMPTION IS AMENDED AFTER BARIATRIC SURGERY? AN INTEGRATIVE REVIEW.

    PubMed

    Gregorio, Valeria Duarte; Lucchese, Roselma; Vera, Ivânia; Silva, Graciele C; Silva, Andrecia; Moraes, Rayrane Clarah Chaveiro

    inclusão foram publicações entre junho de 2005 a janeiro de 2016 relacionadas à cirurgia bariátrica e ao consumo de álcool. Foram excluídas teses, dissertações, trabalhos não publicados, relatos de casos e estudos teóricos. No ano de 2005 houve somente uma revisão relacionada à alteração do metabolismo do álcool em pacientes submetidos à cirurgia bariátrica. Não houve publicações em 2006. Em 2007, houve uma publicação fora dos critérios desta revisão. Em 2010, observou-se aumento de 13% e 20% em 2012, atingindo 40% em 2013. A prevalência e a incidência do consumo de álcool em relação ao tempo de pós-operatório foi de seis meses a três anos com maior seguimento do tratamento por homens. O bypass gástrico em Y-de-Roux apresentou maior associação com o aumento do consumo de álcool durante o pós-operatório. O consumo de álcool é problema que deve ser enfrentado na realização da cirurgia bariátrica.

  9. Quality of Recovery after Anesthesia: Validation of the Portuguese Version of the 'Quality of Recovery 15' Questionnaire.

    PubMed

    Sá, Ana Carolina; Sousa, Gabriela; Santos, Alice; Santos, Cristina; Abelha, Fernando José

    2015-01-01

    Introdução: O questionário "Quality of Recovery 15" tem sido utilizado para o estudo da qualidade de recuperação após anestesia. O objetivo deste estudo foi validar a versão Portuguesa do questionário "Quality of Recovery 15". Material e Métodos: Após aprovação pela Comissão de ética institucional, foi realizado um estudo de coorte prospectivo em doentes submetidos a cirurgia eletiva de junho a agosto de 2013. A versão portuguesa do "Quality of Recovery 15" foi aplicada antes da cirurgia (T0) e 24 h após a cirurgia (T1) em 170 doentes. Os doentes incapazes de dar consentimento informado ou com comprometimento cognitivo foram excluídos. Má qualidade de recuperação foi definida para pontuações de "Quality of Recovery 15" em T1 inferiores à média das pontuações de "Quality of Recovery 15" menos 1 desvio padrão. Confiabilidade e discordãncia entre observadores foram avaliadas por meio da correlação intraclasse. Testes não-paramétricos foram utilizados para comparações. Resultados: Observou-se uma correlação negativa entre pontuações de "Quality of Recovery 15" e tempo de internamento na Unidade Pós-Anestésica (p = -0,264, p = 0,004) e tempo de internamento hospitalar (p = -0,274, p = 0,004). Trinta e dois doentes (19%) tiveram má qualidade de recuperação. Os doentes com má qualidade de recuperação tinham mais frequentemente diabetes mellitus e hipertensão arterial e estavam medicados com antidepressivos com mais frequência. Os doentes com má qualidade de recuperação foram mais frequentemente submetidos a anestesia combinada e menos frequente a anestesia geral e locorregional (p = 0,008). O questionário teve boa consistência interna; a confiabilidade do teste-reteste foi boa. Discussão: A versão portuguesa do "Quality of Recovery 15" mostrou boa correlação com a versão original. Conclusão: Este questionário parece ser uma avaliação precisa e confiável para a qualidade de recuperação.

  10. Intraoperative near-infrared fluorescent imaging during robotic operations.

    PubMed

    Macedo, Antonio Luiz de Vasconcellos; Schraibman, Vladimir

    2016-01-01

    The intraoperative identification of certain anatomical structures because they are small or visually occult may be challenging. The development of minimally invasive surgery brought additional difficulties to identify these structures due to the lack of complete tactile sensitivity. A number of different forms of intraoperative mapping have been tried. Recently, the near-infrared fluorescence imaging technology with indocyanine green has been added to robotic platforms. In addition, this technology has been tested in several types of operations, and has advantages such as safety, low cost and good results. Disadvantages are linked to contrast distribution in certain clinical scenarios. The intraoperative near-infrared fluorescent imaging is new and promising addition to robotic surgery. Several reports show the utility of this technology in several different procedures. The ideal dose, time and site for dye injection are not well defined. No high quality evidence-based comparative studies and long-term follow-up outcomes have been published so far. Initial results, however, are good and safe. RESUMO A identificação intraoperatória de certas estruturas anatômicas, por seu tamanho ou por elas serem ocultas à visão, pode ser desafiadora. O desenvolvimento da cirurgia minimamente invasiva trouxe dificuldades adicionais, pela falta da sensibilidade tátil completa. Diversas formas de detecção intraoperatória destas estruturas têm sido tentadas. Recentemente, a tecnologia de fluorescência infravermelha com verde de indocianina foi associada às plataformas robóticas. Além disso, essa tecnologia tem sido testada em uma variedade de cirurgias, e suas vantagens parecem estar ligadas a baixo custo, segurança e bons resultados. As desvantagens estão associadas à má distribuição do contraste em determinados cenários. A imagem intraoperatória por fluorescência infravermelha é uma nova e promissora adição à cirurgia robótica. Diversas séries mostram

  11. Impact of preoperative analytical values on post-operative mortality rate of intertrochanteric fractures.

    PubMed

    Borges, Ana; Torres, João; São Simão, Ricardo; Cabral, Abel Trigo; Pinto, Rui

    2014-01-01

    Introdução: A incidência das fraturas intertrocantéricas tem aumentado ao longo dos últimos anos, bem como todos os problemas a elas associados. É importante pesquisar possíveis formas de reduzir quer co-morbilidades, quer a mortalidade pós-operatória. Decidimos avaliar o impacto de alguns valores analíticos pré-operatórios na mortalidade pós-operatória de doentes com fractura intertrocantérica, com idade igual ou superior a 65 anos.Material e Métodos: De todas as fracturas intertrocantéricas admitidas entre Janeiro de 2007 e Maio 2012, 160 doentes foram incluídos no estudo. As variáveis estudadas foram idade, género, tempo de internamento, e dados analíticos, como hemoglobina, contagem de leucócitos e plaquetas, níveis de ureia e creatinina e concentração de sódio plasmática. Informação relativa à mortalidade foi obtida através do registo civil e, considerando um ponto de corte de seis meses após a cirurgia, os doentes foram divididos em dois grupos de acordo com a sua sobrevida. Os testes de Mann-Whitney e Chi-quadrado foram utilizados para estudar a associação entre as nossas variáveis e a sobrevida dos doentes.Resultados: A nossa população apresentava uma idade mediana de 82 anos de idade e uma maioria de mulheres (79,4%). Nos primeiros 6 meses após a cirurgia, 27 doentes dos iniciais 160 (16,1%) faleceram. A mortalidade estava relacionada com valores baixos de hemoglobina, elevados de plaquetas, elevados de creatinina e baixa concentração de sódio plasmático.Conclusão: A taxa de mortalidade pos-operatória da cirurgia da anca é elevada. Os nossos resultados podem ser utilizados parareduzir esta taxa, corrigindo valores analíticos pré-operatórios.

  12. A Diagnostic Assessment for the Teaching of Astronomy. (Spanish Title: Una Evaluación Diagnóstica Para la Enseñanza de la Astronomia.) Uma Avaliação Diagnóstica Para o Ensino da Astronomia

    NASA Astrophysics Data System (ADS)

    Pacifico Ribeiro de Assis Silveira, Felipa; Soares Gomes de Sousa, Célia Maria; Moreira, Antonio

    2011-07-01

    interpretación, lo que nos permite comprender los significados asignados por el estudiante a estos conceptos. Se desprende de la evaluación diagnóstica que la mayoría de los encuestados ha tenido dificultades para exponer los conceptos científicos sobre el Universo y la Tierra, para iniciar el 6 º grado. Sin embargo, se identificaron ideas relevantes y las representaciones que contribuyeron a la re-significación de los conceptos científicos propuestos para la enseñanza del tema en esta serie. Los resultados de la evaluación diagnóstica han servido como referencia para la organización del Programa, facilitando el proceso de aprendizaje, haciendo coincidir la secuencia didáctica a las características de los estudiantes y el contexto del aula. Se espera que el instrumento presentado en este documento también pueda ser utilizado por otros investigadores en investigaciones relacionadas con el tema. Este artigo tem como objetivo apresentar os resultados de uma avaliação diagnóstica, utilizada como instrumento para a coleta de dados sobre o conhecimento prévio de conceitos científicos, necessários à compreensão do tema Terra e Universo, de um grupo composto por 47 estudantes, da 6ª série do Ensino Fundamental. A ação pedagógica de diagnosticar os conhecimentos prévios, do estudante, antes de ensiná-los, tem fundamento na teoria da Aprendizagem Significativa, proposta por David Ausubel. Essa avaliação diagnóstica foi composta por 25 questões, cujas respostas foram analisadas e categorizadas visando sua interpretação, o que permitiu compreender os significados atribuídos pelo estudante a esses conceitos. Conclui-se, a partir da avaliação diagnóstica, que a maioria dos estudantes pesquisados apresentou dificuldades em expor conceitos científicos sobre o tema Terra e Universo ao iniciar a 6ª série. Entretanto, foram identificadas ideias e representações relevantes que contribuíram para a (re)significação dos conceitos científicos propostos

  13. Is there a rationale for pulmonary rehabilitation following successful chemotherapy for tuberculosis?

    PubMed

    Muñoz-Torrico, Marcela; Rendon, Adrian; Centis, Rosella; D'Ambrosio, Lia; Fuentes, Zhenia; Torres-Duque, Carlos; Mello, Fernanda; Dalcolmo, Margareth; Pérez-Padilla, Rogelio; Spanevello, Antonio; Migliori, Giovanni Battista

    2016-01-01

    funcional (espirometria, pletismografia e DLCO), a gasometria arterial, a capacidade de realizar exercícios, as lesões (radiografia de tórax e TC) e a qualidade de vida justificam o esforço de se considerar o que deve ser feito quando os pacientes completam seu tratamento. Até onde sabemos, nenhuma revisão avaliou esse tópico de forma abrangente. Nosso objetivo foi revisar as evidências disponíveis e obter algumas conclusões sobre o futuro papel da fase de "tratamento pós-tuberculose", que irá potencialmente impactar milhões de casos todos os anos. Realizou-se uma revisão não sistemática da literatura tendo como base uma pesquisa no PubMed usando palavras-chave específicas (várias combinações dos termos "tuberculose", "reabilitação", "tuberculose multirresistente", "doença pulmonar", "doença pulmonar obstrutiva", e "medidas de volume pulmonar"). As listas de referências dos artigos principais foram recuperadas para melhorar a sensibilidade da busca. Foram selecionados manuscritos escritos em inglês, espanhol e russo. As principais áreas de interesse foram sequelas de tuberculose após diagnóstico e tratamento; "pulmão destruído"; avaliação funcional das sequelas; intervenções de reabilitação pulmonar (fisioterapia, oxigenoterapia de longo prazo e ventilação); e tuberculose multirresistente. As evidências encontradas sugerem que a tuberculose é definitivamente responsável por sequelas funcionais, principalmente causando um padrão obstrutivo na espirometria (mas também padrões restritivos e mistos) e que há razão para a reabilitação pulmonar. Fornecemos também uma lista de variáveis a serem discutidas em futuros estudos sobre reabilitação pulmonar em pacientes com sequelas pós-tuberculose.

  14. Inclusion of Astronomy Themes in an Inovative Approach of Informal Physics Teaching for High School Students. (Spanish Title: Inclusión de Temas Astronómicos en Uma Abordaje Innovadora de la Enseñanza Informal de Física Para Estudiantes de Secumdaria.) Inclusão de Temas Astronômicos Numa Abordagem Inovadora do Ensino Informal de Física Para Estudantes do Ensino Médio

    NASA Astrophysics Data System (ADS)

    Tiara Mota, Aline; de Morais Bonomini, Iracema Ariel; Meloni Martins Rosado, Ricardo

    2009-12-01

    The current work reports on an experience on Astronomy education at the Federal University of Itajubá through an extra-curricular course offered for High School students. This initiative was motivated by the low attention paid to the Astronomy subjects at this stage of the Brazilian Formal Education, in spite that the National Curricular Parameters (PCN and PCN+, in Brazil) point out the importance of their inclusion Este artículo relata una experiencia en la enseñanza de la astronomía efectuada en la Universidad Federal de Itajubá en la forma de un curso de extensión orientado para los estudiantes del colegio secundario. Esta iniciativa surgió de constatar la poca atención dada a la Astronomía en esta etapa de la Educación formal brasileña, a pesar que los Parámetros Curriculares Nacionales (PCN y PCN+, en Brasil) destacan la importancia de su inclusión. Este artigo relata uma experiência em ensino de Astronomia realizada na Universidade Federal de Itajubá na forma de um curso de extensão voltado para alunos do Ensino Médio. Esta iniciativa surgiu da pouca atenção que se dá à Astronomia nesta etapa da Educação embora os Parâmetros Curriculares Nacionais (PCN e PCN+) apontem a importância de sua inclusão.

  15. Hard metal lung disease: a case series.

    PubMed

    Mizutani, Rafael Futoshi; Terra-Filho, Mário; Lima, Evelise; Freitas, Carolina Salim Gonçalves; Chate, Rodrigo Caruso; Kairalla, Ronaldo Adib; Carvalho-Oliveira, Regiani; Santos, Ubiratan Paula

    2016-01-01

    To describe diagnostic and treatment aspects of hard metal lung disease (HMLD) and to review the current literature on the topic. This was a retrospective study based on the medical records of patients treated at the Occupational Respiratory Diseases Clinic of the Instituto do Coração, in the city of São Paulo, Brazil, between 2010 and 2013. Of 320 patients treated during the study period, 5 (1.56%) were diagnosed with HMLD. All of those 5 patients were male (mean age, 42.0 ± 13.6 years; mean duration of exposure to hard metals, 11.4 ± 8.0 years). Occupational histories were taken, after which the patients underwent clinical evaluation, chest HRCT, pulmonary function tests, bronchoscopy, BAL, and lung biopsy. Restrictive lung disease was found in all subjects. The most common chest HRCT finding was ground glass opacities (in 80%). In 4 patients, BALF revealed multinucleated giant cells. In 3 patients, lung biopsy revealed giant cell interstitial pneumonia. One patient was diagnosed with desquamative interstitial pneumonia associated with cellular bronchiolitis, and another was diagnosed with a hypersensitivity pneumonitis pattern. All patients were withdrawn from exposure and treated with corticosteroid. Clinical improvement occurred in 2 patients, whereas the disease progressed in 3. Although HMLD is a rare entity, it should always be included in the differential diagnosis of respiratory dysfunction in workers with a high occupational risk of exposure to hard metal particles. A relevant history (clinical and occupational) accompanied by chest HRCT and BAL findings suggestive of the disease might be sufficient for the diagnosis. Descrever aspectos relacionados ao diagnóstico e tratamento de pacientes com doença pulmonar por metal duro (DPMD) e realizar uma revisão da literatura. Estudo retrospectivo dos prontuários médicos de pacientes atendidos no Serviço de Doenças Respiratórias Ocupacionais do Instituto do Coração, localizado na cidade de S

  16. Pulmonary foreign body granulomatosis in a chronic user of powder cocaine.

    PubMed

    Khurana, Shruti; Chhoda, Ankit; Sahay, Sandeep; Pathania, Priyanka

    2017-08-03

    We describe the case of a 33-year-old man, a chronic user of powder cocaine, who presented with dyspnea, fever, night sweats, and significant weight loss. Chest HRCT revealed centrilobular nodules, giving an initial impression of miliary tuberculosis. Therefore, he was started on an empirical, four-drug antituberculosis treatment regimen. Four weeks later, despite the tuberculosis treatment, he continued to have the same symptoms. We then performed transbronchial lung biopsy. Histopathological analysis of the biopsy sample revealed birefringent foreign body granuloma. A corroborative history of cocaine snorting, the presence of centrilobular nodules, and the foreign body-related histopathological findings led to a diagnosis of pulmonary foreign body granulomatosis. This report underscores the fact that pulmonary foreign body granulomatosis should be included in the differential diagnosis of clinical profiles resembling tuberculosis. RESUMO Descrevemos o caso de um homem de 33 anos de idade, usuário crônico de cocaína em pó, que apresentava dispneia, febre, sudorese noturna e perda de peso significativa. A TCAR de tórax revelou nódulos centrolobulares, dando uma impressão inicial de tuberculose miliar. Por isso, o paciente passou a receber tratamento empírico com quatro tuberculostáticos. Quatro semanas depois, apesar do tratamento antituberculose, o paciente continuou a apresentar os mesmos sintomas. Foi então realizada a biópsia pulmonar transbrônquica. A análise histopatológica da amostra obtida revelou granuloma de corpo estranho birrefringente. A história de uso de cocaína por inalação, a presença de nódulos centrolobulares e os achados histopatológicos de corpos estranhos confirmaram o diagnóstico de granulomatose pulmonar de corpo estranho. Este relato destaca o fato de que a granulomatose pulmonar de corpo estranho deve ser incluída no diagnóstico diferencial de perfis clínicos que se assemelham a tuberculose.

  17. [Esophageal perforation in children: a review of one pediatric surgery institution's experience (16 years)].

    PubMed

    Vieira, Elizabete; Cabral, Maria João; Gonçalves, Mroslava

    2013-01-01

    Introdução: O estudo teve por objetivo avaliar a experiência do nosso Serviço no tratamento das perfurações esofágicas. Material e Métodos: Análise retrospetiva de nove casos ocorridos entre 1 de Janeiro de 1996 e 31 de Dezembro de 2011. Destes casos, sete ocorreram após ingestão acidental de corpos estranhos e em dois tratou-se de lesões iatrogénicas após dilatação esofágica: por estenose péptica num caso e no outro por estenose da anastomose esofágica término-terminal de uma criança operada por atrésia do esófago. Resultados: Em 78% dos casos a abordagem inicial foi médica, com encerramento comprovado da perfuração em média ao fim de 20 dias; 22% dos doentes (dois casos) foram submetidos a cirurgia sem sucesso, acabando um deles por curar sem sequelas com pausa alimentar e terapêutica médica; no outro caso verificou-se necessidade de realizar posteriormente uma esofagocoloplastia. Na nossa série não se registou mortalidade. Discussão: A perfuração esofágica é uma das lesões mais graves do trato alimentar, continuando a ser devastadora, e, de difícil diagnóstico e tratamento. O reconhecimento desta complicação é fundamental para o seu tratamento com sucesso. Conclusões: O atraso do diagnóstico está associado a uma mortalidade que pode oscilar entre os 20 e 40%.

  18. The Meanings of Astronomical Observation: An Analysis on the Basis of Relationship with Knowledge. (Spanish Title: Los Sentidos de la Observación Astronómica: un Análisis sobre la Base de la Relación con el Saber.) Os Sentidos da Observação Astronômica: Uma Análise com Base na Relação com o Saber

    NASA Astrophysics Data System (ADS)

    Klein, Alberto Eduardo; de Mello Arruda, Sergio; Meneghello Passos, Marinez; Vinicius Domenes Zapparoli, Ferdinando

    2010-12-01

    This article presents results of a research which aimed to understand the meanings that people construct for astronomical observation. The subjects, students and school teachers, initially received some instruction on how to view astronomical objects through the telescope. After the observation was realized, they were interviewed. The data analysis allowed the creation of 12 categories, later interpreted on the basis of relationship with knowledge (relation to the world, with himself and with others), as presented by Bernard Charlot. Este artículo presenta los resultados de una investigación que tuvo como objetivo comprender los sentidos que las personas construyen para la observación astronómica. Los sujetos, los estudiantes y maestros de escuela, recibieron inicialmente algunas instrucciones sobre cómo ver los objetos astronómicos a través del telescopio. Al término de la observación, fueron entrevistados. El análisis de datos permitió la creación de 12 categorías que más tarde fueron interpretadas sobre la base de la relación con el conocimiento (relación con el mundo, consigo mismo y con los demás), tal como presentado por Bernard Charlot. Este artigo apresenta resultados de uma pesquisa que objetivou entender quais os sentidos que as pessoas constroem para a observação astronômica. Os sujeitos da pesquisa, estudantes e professores do ensino médio, receberam inicialmente alguma instrução sobre como visualizar os objetos astronômicos através do telescópio. Após a realização da observação, eles foram entrevistados. A análise dos dados permitiu a elaboração de 12 categorias que foram posteriormente interpretadas com base nas relações com o saber (relação com o mundo, consigo mesmo e com o outro), conforme apresentadas por Bernard Charlot.

  19. [Total laparoscopic hysterectomy: retrospective analysis of 262 cases].

    PubMed

    Nogueira-Silva, Cristina; Santos-Ribeiro, Samuel; Barata, Sónia; Alho, Conceição; Osório, Filipa; Calhaz-Jorge, Carlos

    2014-01-01

    Introdução: A histerectomia é a cirurgia ginecológica major mais frequentemente realizada nos países desenvolvidos, considerando-se três principais vias de abordagem: vaginal, abdominal e laparoscópica. Apesar de múltiplas vantagens, a histerectomia totalmente laparoscópica tem-se associado a controvérsia relativamente à taxa de complicações.Objectivos: Análise da nossa casuística de histerectomia totalmente laparoscópica e avaliação da taxa de complicações.Material e Métodos: Análise retrospetiva dos processos clínicos das doentes submetidas a histerectomia totalmente laparoscópica no nosso departamento, pela mesma equipa cirúrgica, entre abril de 2009 e março de 2013 (n = 262).Resultados: As doentes tinham em média 48,9 ± 9 anos e 49,2% tinha antecedentes de cirurgia abdomino-pélvica. O índice de massa corporal médio era 26,5 ± 4,5 kg/m2, sendo que 42% eram obesas ou tinham excesso de peso. O tempo operatório médio para realização da histerectomia totalmente laparoscópica foi 77,7 ± 27,5 minutos, diminuindo significativamente com o aumento da experiência da equipa cirúrgica. O peso médio da peça operatória foi 241 ± 168,4g e a duração média do internamento após a cirurgia foi 1,49 ±0,9 dias. A diferença entre a hemoglobina pré e pós-operatória foi 1,5 ± 0,8g/dL. A morbilidade major foi 1,5% (n = 4) e a minor 11,5% (n = 30). Salienta-se um caso de conversão para laparotomia e dois casos de deiscência da cúpula vaginal. Não ocorreu nenhuma lesão urinária ou gastrointestinal grave.Conclusões: Esta série demonstra que, se realizada por uma equipa cirúrgica adequadamente treinada, a histerectomia totalmente laparoscópica é segura e associada a baixa taxa de complicações.

  20. Learning about the Sky from the Environment: An Experience Working Along One Year with Students of Elementary Education. (Spanish Title: Aprendiendo sobre EL Cielo Desde el Entorno: Una Experiencia Trabajando Durante un Año Junto a Estudiantes del Primario.) Aprendendo sobre o Céu a Partir do Entorno: Uma Experiência de Trabalho ao Longo de um Ano com Alunos de Ensino Fundamental

    NASA Astrophysics Data System (ADS)

    Longhini, Marcos Daniel; Gomide, Hanny Angeles

    2014-12-01

    percepción limitada que los estudiantes tienen de su alrededor la cual, sin embargo, se expandió debido a las actividades llevadas a cabo, sobre todo en relación con la Luna. Trabajar con medidas sistemáticas revela el manejo cuidadoso de los datos para que sean comprensibles para los estudiantes, así como el trabajo con las sombras para que comprendan primero como se forman estas para después trabajarlas en Astronomía. Por último, llegamos a la conclusión de que el proceso desarrollado consistió en una etapa inicial de una obra que debe ser profundizado en los años posteriores de la formación de estos estudiantes. Projeto de pesquisa desenvolvido com 95 alunos do 6º ano do Ensino Fundamental de uma escola pública estadual de Uberlândia, Minas Gerais. Foi um trabalho contínuo, de fevereiro a dezembro de 2013, o qual levou os alunos a participarem de atividades de observação do entorno, dentre ele, o céu, analisando as mudanças ocorridas. Focamos no estudo das variações de temperaturas, chuvas, duração do dia, variações do tamanho das sombras e mudanças nos aspectos da Lua. Nosso foco de análise centrou-se em discutir os conhecimentos que os referidos alunos tinham acerca dos temas indicados no início e ao término da implementação da proposta. Os resultados mostraram a percepção limitada que os estudantes possuem de seu entorno, todavia, ampliada em função das atividades desenvolvidas, principalmente no que se refere à Lua. O trabalho com medidas sistemáticas revela o cuidado no tratamento dos dados para que eles se tornem compreensíveis aos alunos, assim como o trabalho com as sombras sinaliza para que os alunos primeiramente compreendam como as sombras são formadas para depois trabalhar isso em Astronomia. Por fim, concluímos que o processo vivido constituiu-se em uma etapa inicial de um trabalho que deve ser estimulado para os anos subsequentes da formação desses alunos.

  1. Growth, lung function, and physical activity in schoolchildren who were very-low-birth-weight preterm infants.

    PubMed

    Winck, Aline Dill; Heinzmann-Filho, João Paulo; Schumann, Deise; Zatti, Helen; Mattiello, Rita; Jones, Marcus Herbert; Stein, Renato Tetelbom

    2016-01-01

    ) de seus prontuários médicos. Dos 93 escolares avaliados, 48 crianças no grupo RNMBP e 45 no grupo controle. Não houve diferenças significativas entre os grupos em relação às características antropométricas e nutricionais ou aos parâmetros de função pulmonar. Não foram encontradas associações entre as variáveis perinatais/neonatais e parâmetros da função pulmonar dos escolares no grupo RNMBP. Embora sem diferença significativa em relação aos níveis de atividade física, o grupo RNMBP apresentou uma tendência de ser mais ativo que o grupo controle. Nos escolares aqui estudados o crescimento e a função pulmonar parecem não ser afetados por prematuridade, peso ao nascimento ou nível de atividade física.

  2. TIBIOTARSAL COMPRESSION ARTHRODESIS USING A LATERAL LOCKING PLATE.

    PubMed

    Coughlin, Michael J; Nery, Caio; Baumfeld, Daniel; Jastifer, James

    2012-01-01

    Objetivos: A artrodese tibiotársica (TT) continua sendo uma importante opção no tratamento da artrose primária ou pós-traumática do tornozelo mas persiste ainda a controvérsia sobre o melhor método de fixação do foco de artrodese. Independentemente do tipo de material utilizado, o objetivo maior é a obtenção da fusão articular sólida, saudável e indolor. O propósito do presente estudo é apresentar os resultados preliminares de um novo sistema de placa bloqueada lateral compressiva para a artrodese do tornozelo. Método: Treze pacientes consecutivos portadores de artrose tibiotársica foram submetidos à artrodese do tornozelo nove pacientes eram homens e quatro mulheres. Com o auxílio de um guia, as superfícies articulares do talo e da tíbia foram decorticadas. Um sistema de compressão foi aplicado para evitar o alinhamento indesejável dos segmentos e uma placa bloqueada pré-moldada lateral foi utilizada para obter a fusão articular. Resultados: Tanto o escore AOFAS quanto o VAS melhoraram com a cirurgia. Todos os tornozelos operados consolidaram dentro do prazo de seis meses. Em todos os pacientes, foi obtido um ótimo alinhamento nos planos sagital, coronal e transverso. Conclusão: Acreditamos que a combinação de compressão bilateral, cortes ósseos com contornos pré-demarcados e placa lateral bloqueada, constitui uma técnica moderna, segura e útil para a artrodese do tornozelo.

  3. Surgical correction of ectopic penis and scrotum associated with bilateral orchidopexy.

    PubMed

    Sobral, Daniel Santos Rocha; Silva, Helder Damásio da; Damázio, Eulálio

    2017-01-01

    Ectopic penis is usually associated with penoscrotal transposition, and it is rarely observed in isolation. We report a surgical approach for an extremely rare case. A 10-year-old male patient with bilateral cryptorchidism and ectopic penis and scrotum in perineal area, with no penoscrotal transposition, representing an association not yet described in literature. A previous orchiopexy failed due to ectopic scrotum. By means of an inverted Y incision, the penis was mobilized and a perineal skin flap in form of a testicular sac was prepared. Finally orchiopexy was performed. The surgery was essential to treat cryptorchidism and to improve the self-image of the patient. RESUMO O pênis ectópico geralmente ocorre associado à transposição peno-escrotal, sendo raro isoladamente. Relatamos uma abordagem cirúrgica para um caso extremamente raro. Tratava-se de paciente do sexo masculino, 10 anos, com criptorquidia bilateral e pênis e escroto ectópicos, na região perineal, sem transposição peno-escrotal, representando uma associação ainda não descrita na literatura. Orquidopexia prévia sem sucesso, devido à ectopia do escroto. Por meio de uma incisão em Y invertido, mobilizou-se o pênis e preparou-se um retalho da pele perineal em forma de bolsa testicular. Por fim, realizou-se a orquidopexia. A cirurgia foi fundamental para tratar a criptorquidia e promover ganho na autoimagem do paciente.

  4. Conversion of Plastic Surgery meeting abstract presentations to full manuscripts: a brazilian perspective.

    PubMed

    Denadai, Rafael; Pinho, André Silveira; Samartine, Hugo; Denadai, Rodrigo; Raposo-Amaral, Cassio Eduardo

    2017-01-01

    to assess the conversion rate of Plastic Surgery meeting abstract presentations to full manuscript publications and examine factors associated with this conversion. we assessed the abstracts presented at the 47th and 48th Brazilian Congresses of Plastic Surgery by cross-referencing with multiple databases. We analyzed the Abstracts' characteristics associated with full manuscript publications. of the 200 abstracts presented, 50 abstracts were subsequently published in full, giving the conference a conversion rate of 25%. The mean time to publish was 15.00±13.75 months. In total, there were 4.93±1.63 authors per abstract and 67.8±163 subjects per abstract; 43.5% of the abstracts were of retrospective studies; 69% comprised the plastic surgery topics head and neck, and chest and trunk, and 88.5% had no statistical analysis. Overall, 80% of the manuscripts were published in plastic surgery journals, 76% had no impact factor and 52% had no citations. Bivariate and multivariate analyses revealed the presence of statistical analysis to be the most significant (p<0.05) predictive factor of conversion of abstracts into full manuscripts. the conversion rate found from this bibliometric research appeared a bit lower than the conversion trend of international plastic surgery meetings, and statistical analysis was a determinant of conversion success. avaliar a taxa de conversão de resumos apresentados em congressos de Cirurgia Plástica em publicações de manuscritos completos e examinar fatores associados a essa conversão. resumos apresentados nos XLVII e XLVIII Congressos Brasileiros de Cirurgia Plástica foram avaliados por meio de referências cruzadas em diversos bancos de dados. Averiguaram-se as características dos resumos associadas às publicações de manuscritos completos. dos 200 resumos apresentados, 50 foram posteriormente publicados na íntegra, determinando uma taxa de publicação de 25%. O tempo médio para publicação foi 15,00±13,75 meses. No total

  5. [Laparoscopic surgery of gastroesophageal reflux in children].

    PubMed

    Dias, Ana; Amaral, Marina; Trindade, Eunice; Dias, Jorge Amil; Campos, Miguel; Estevão-Costa, José

    2013-01-01

    Introdução: O refluxo gastroesofágico na criança é frequente e geralmente inócuo. Contudo, perante doença de refluxo gastroesofágico pode impor-se o tratamento cirúrgico, o qual pode ser realizado por via clássica ou laparoscópica. No presente estudo pretende-se avaliar a exequibilidade, eficácia e segurança da cirurgia antirrefluxo (fundoplicatura de Nissen) por via laparoscópica com ênfase no recém-nascido, lactente e primeira infância.Material e Métodos: Estudaram-se as crianças com refluxo gastroesofágico propostas para cirurgia por via laparoscópica entre janeiro 2006 e dezembro 2012 num Serviço de Cirurgia Pediátrica de um Hospital universitário. Realizou-se uma análise descritiva e comparativa por faixa etária (grupo I: <1 ano, grupo II: 1-3 anos, grupo III: > 3 anos) e presença de comorbilidades. Foram avaliados os seguintes parâmetros: demografia, sintomatologia, comorbilidades, indicações operatórias, perioperatório e evolução pós-operatória. Foi assumido um nível de significância de 5%.Resultados: Foram propostas 55 crianças, das quais 12 do grupo I, 15 do grupo II e 28 do grupo III. 50,9% apresentavam comorbilidades (21 com doença do sistema nervoso central e sete com atresia esofágica). Em 52 (94,5%) casos, a cirurgia foi exequível exclusivamente por via laparoscópica. A duração do procedimento foi de 167 ± 42 minutos, sem diferenças significativas entre grupos etários, mas superior na doença do sistema nervoso central. Com um seguimento de 35,5 ± 23,9 meses, ocorreram as seguintes complicações: síndrome de gas-bloat, dumping e disfagia em oito casos (15,7%) e hérniaparaesofágica em dois casos (3,9%), sem diferenças significativas entre os grupos; verificou-se recidiva clínica com reoperação em dois casos.Conclusão: A fundoplicatura de Nissen laparoscópica é um procedimento exequível, eficaz e com baixa morbilidade, inclusive em recém-nascidos, lactentes e na primeira infância.

  6. An initial experience with a digital drainage system during the postoperative period of pediatric thoracic surgery.

    PubMed

    Costa, Altair da Silva; Bachichi, Thiago; Holanda, Caio; Rizzo, Luiz Augusto Lucas Martins De

    2016-01-01

    To report an initial experience with a digital drainage system during the postoperative period of pediatric thoracic surgery. This was a prospective observational study involving consecutive patients, ≤ 14 years of age, treated at a pediatric thoracic surgery outpatient clinic, for whom pulmonary resection (lobectomy or segmentectomy via muscle-sparing thoracotomy) was indicated. The parameters evaluated were air leak (as quantified with the digital system), biosafety, duration of drainage, length of hospital stay, and complications. The digital system was used in 11 children (mean age, 5.9 ± 3.3 years). The mean length of hospital stay was 4.9 ± 2.6 days, the mean duration of drainage was 2.5 ± 0.7 days, and the mean drainage volume was 270.4 ± 166.7 mL. The mean maximum air leak flow was 92.78 ± 95.83 mL/min (range, 18-338 mL/min). Two patients developed postoperative complications (atelectasis and pneumonia, respectively). The use of this digital system facilitated the decision-making process during the postoperative period, reducing the risk of errors in the interpretation and management of air leaks. Relatar a experiência inicial com um sistema de drenagem digital no pós-operatório de cirurgia torácica pediátrica. Estudo observacional e prospectivo envolvendo pacientes consecutivos do ambulatório de cirurgia torácica pediátrica da instituição, com idade até 14 anos, e com indicação de ressecção pulmonar (lobectomia e/ou segmentectomia através de toracotomia poupadora muscular). Os parâmetros avaliados foram perda aérea (quantificada com o sistema digital), biossegurança, tempo de drenagem, tempo de internação e complicações. O sistema digital foi utilizado em 11 crianças, com média de idade de 5,9 ± 3,3 anos. A média do tempo de internação foi de 4,9 ± 2,6 dias, a de tempo de drenagem foi de 2,5 ± 0,7 dias, e a de volume de drenagem foi de 270,4 ± 166,7 ml. A média da perda aérea máxima foi de 92,78 ± 95,83 ml

  7. Establishing the Empirical Relationship Between Non-Science Majoring Undergraduate Learners' Spatial Thinking Skills and Their Conceptual Astronomy Knowledge. (Spanish Title: Estableciendo Una Relación Empírica Entre el Razonamiento Espacial de los Estudiantes de Graduación de Carreras no Científicas y su Conocimento Conceptual de la Astronomía.) Estabelecendo Uma Relação Empírica Entre o RacioCínio Espacial dos Estudantes de Graduação EM Carreiras Não Científicas e Seu Conhecimento Conceitual da Astronomia

    NASA Astrophysics Data System (ADS)

    Heyer, Inge; Slater, Stephanie J.; Slater, Timothy F.

    2013-12-01

    normalizadas, en el desempeño de los estudiantes en estos dos asuntos foram pequenas, 0.26 e 0.13 respectivamente. El razonamiento espacial de los estudiantes fue medido utilizando un instrumento específico desarrollado para este trabaljo. Las correlaciones entre los resultados de los tests astronómicos y este instrumento específico, antes y después del curso mostraron una relación entre moderada y fuerte, sugiriendo que la relación entre el razonamiento espacial y el conocimiento astronómico puede explicar hasta un 25% de la variación em el desempeño de los estudiantes. A comunidade da educação em astronomia tem suposto de forma implícita que o aprendizado da astronomia consiste em um domínio conceitual fundamentado no raciocínio espacial. Como um primeiro passo para identificar formalmente uma relação empírica entre estas duas coisas, utilizamos como amostra os estudantes de graduação de carreiras não científicas de um curso exploratório em uma universidade norte-americana do meio-oeste de médio porte com programa de Doutorado em andamento, onde estes estudantes foram submetidos a um diagnóstico de raciocino espacial e conceitos astronômicos antes e depois do mesmo. As ferramentas utilizadas foram o Test Of Astronomy Standards (TOAST) e o questionário What do you know? Utilizando somente dados completamente consistentes para esta análise, nossa amostra consistiu de 86 estudantes de graduação. As melhoras, depois de normalizadas, do desempenho dos estudantes nos dois quesitos foram pequenas, 0.26 e 0.13 respectivamente. O raciocínio espacial dos estudantes foi medido utilizando um instrumento específico desenhado para este trabalho. As correlações entre os resultados dos testes astronômicos e este instrumento específico antes e depois do curso mostraram uma relação entre moderada e forte, sugerindo que a relação entre o raciocínio espacial e o conhecimento astronômico pode explicar até um 25% na variação no desempenho dos

  8. An Invited Preface for the Following Book: Astrobiologia, Uma Ciencia Emergente

    NASA Technical Reports Server (NTRS)

    Rothschild, Lynn J.

    2016-01-01

    Since the dawn of civilization, we have beheld at the beauty and wonder of the natural world around us and wondered how it came to be. We have pondered the past, and have been intrigued about the future. For this we are unique. Our ancestors looked to the vastness of space and thought surely there are others out there. We are now at a new time in human history where we can address these age-old questions with a scientific approach and study rigorously the three big questions of astrobiology: Where do we come from? Where are we going? and Are we alone? These fundamental questions of astrobiology correspond to those of humanity, and arguably, what makes us human. And so we cannot help but be drawn to the field. Unlike other scientific disciplines, Astrobiology draws on the latest advances in a multitude of fields, from evolutionary and molecular biology, to prebiotic and interstellar chemistry, from astrophysics to astronomy, with a healthy dose of earth and planetary science. Astrobiology is in reality a "metadiscipline" drawing on useful science wherever it is to be found. From a practical point of view, this endeavor requires the interaction of scientists who might not normally meet each other, much less work on a common research project. And, unlike most other scientific disciplines, Astrobiology has implications for how we see ourselves, and how we interact with the earth and beyond. "Where do we come from" touches on the "why" questions that have intrigued not just scientists but philosophers and theologians. "Where are we going" adds to these an economic and political involvement that is currently being played out with discussions of climate change. "And are we alone" will someday force us to face the fact that we as living creatures are not unique, or perhaps that we are utterly alone in the universe, the result of a chemical history that was so improbable as to result in a sample size of one. Either result will force ethical considerations of either "the other" and their relationship to us, or our solitude and thus responsibility as the only life form in our cosmos. So what is Astrobiology? Let's start with the "Where do we come from?" A biologist will approach this looking at the evolution of life on earth, using such traditional tools as comparative anatomy and paleontology and newer tools such as molecular techniques. But this doesn't address why this happened the way it did without a comprehensive understanding of the environment. What was the temperature at such and such a time? Was the earth in a snowball phase or being bombarded by meteorites -- or even just a single large, well-placed one such as struck off the Yucatan peninsula 65 million years ago. This event could not have been predicted by population genetics alone, yet it had the most profound influence on our evolution as without it, we could still be in a world dominated by dinosaurs with the mammals cowering under cover. But it is not enough to go back to LUCA, the Last Universal Common Ancestor of all extant life. One must go back to the dawn of life. How did life arise? What was the environmental backdrop that allowed it to happen? How did we happen to end up with a habitable planet? Indeed, what is the origin and evolution of our solar system, galaxy, biogenic elements all the way back to the Big Bang. The "Where are we going?" tends to be ignored in many astrobiology programs, but in fact this is of the most immediate importance to us. Whereas the past was dominated by physical and chemical processes, and organismal interactions, the future has a new major player: us. While we probably don't have the power (yet) to stop our galaxy passing through another, or even reset the sun or stop the movement of the moon away from the earth, all of these things will influence the future of life on earth. We are already proving that we have the power to visit other bodies in our solar system, either with humans or our robotic surrogates. We are changing our atmospheric composition and thus our climate. We have the power to render species extinct, including our own. But we also have the power to use these tools for the common good, to extend our lifetimes and reclaim our rivers and forests. Which will it be? And then there is the question where science fiction becomes a reality: "Are we alone?" While many people are anxious to find signs of intelligent life out there, such a creature may not share either our curiosity or values. But what if there was a beneficent alien civilization that could communicate with us, perhaps forging a mutual understanding? More likely in the forseeable future is finding a small life, less evolved, life form. Note I did not use the word "simple" as there is nothing "simple" about life, ever. Which brings us back to the question: what is life? So where does Brazil come in? For nearly a decade there has been interest in a Brazilian astrobiology program, from a small side meeting held by the Brazilian Exobiology Program (BEP) of the Brazilian National Research Council, held in Rio de Janeiro, Brazil, on August 12, 2009, in association with the IAU Assembly to subsequent workshops held in several locations and membership of the Brazilian program in the NASA Astrobiology Institute (NAI). Each time I go to Brazil, I am impressed by the enthusiasm of the community, both scientific and student, the latter an excellent omen for the future of astrobiology in Brazil. Facilities are being built to supplement the natural laboratories that Brazil is blessed to have. In my own lab I have been privileged to have a wonderful Brazilian postdoctoral fellow, Dr. Ivan Paulino-Lima, resulting in a daily reminder of the program. I am honored to have been part of the development of astrobiology in Brazil, and hope that this relationship will continue to flourish. Clearly to advance astrobiology needs new knowledge, a reorganization of that which is known, and space missions. To help the reader join on this quest, what follows is a buffet of topics that will allow the reader to nibble on the richness that is Astrobiology. And, like a fabulous meal, it should make you want more. Welcome to Astrobiology.

  9. CCD photometric analysis of the W UMa-type binary V376 Andromeda

    NASA Astrophysics Data System (ADS)

    Çiçek, C.

    2011-01-01

    This study presents the absolute parameters of the contact binary system V376 And. CCD photometric observations were made at the Çanakkale Onsekiz Mart University Observatory in 2004. The instrumental magnitudes of all observed stars were converted into standard magnitudes. New BV light curves of the system were analysed using the Wilson-Devinney method supplemented with a Monte Carlo type algorithm. Since there are large asymmetries between maxima (i.e., O'Connell effect) in these light curves, two different models (one with a cool spot and one with a hot spot) were applied to the photometric data. The best fit, which was obtained with a large hot spot on the secondary component, gives V376 And as an A sub-type contact binary in poor thermal contact and a small value of the filling factor ( f ≈ 0.07). Combining the solutions of our light curves and Rucinski et al. (2001)'s radial velocity curves, the following absolute parameters of the components were determined: M1 = 2.44 ± 0.04 M ⊙, M2 = 0.74 ± 0.03 M ⊙, R1 = 2.60 ± 0.03 R ⊙, R2 = 1.51 ± 0.02 R ⊙, L1 = 40 ± 4 L ⊙ and L2 = 5 ± 1 L ⊙. We also discuss the evolution of the system, which appears to have an age of 1.6 Gyr. The distance to V376 And was calculated as 230 ± 20 pc from this analysis, taking into account interstellar extinction.

  10. Model computations of blue stragglers and W UMa-type stars in globular clusters

    NASA Astrophysics Data System (ADS)

    Stȩpień, K.; Kiraga, M.

    2015-05-01

    Context. It was recently demonstrated that contact binaries occur in globular clusters (GCs) only immediately below turn-off point and in the region of blue straggler stars (BSs). In addition, observations indicate that at least a significant fraction of BSs in these clusters was formed by the binary mass-transfer mechanism. Aims: The aim of our present investigation is to obtain and analyze a set of evolutionary models of cool, close detached binaries with a low metal abundance, which are characteristic of GC. Methods: We computed the evolution of 975 models of initially detached, cool close binaries with different initial parameters. The models include mass exchange between components as well as mass and angular momentum loss due to the magnetized winds for very low-metallicity binaries with Z = 0.001. The models are interpreted in the context of existing data on contact binary and blue straggler members of GCs. The models are based on our recently developed code for evolutionary modeling of cool close and contact binaries. Results: The model parameters agree well with the observed positions of the GC contact binaries in the Hertzsprung-Russell diagram, and we achieve detailed parameters of several individual contact and near-contact binaries. Contact binaries in the lower part of the cluster main sequence are absent because there are no binaries with initial orbital periods shorter than 1.5 d. Contact binaries end their evolution as mergers that appear in the BS region. Binary-formed BSs populate the whole observed BS region in a GC, but a gap is visible between low-mass mergers that are concentrated along the zero-age main sequence and binary BSs occupying the red part of the BS region. Very few binary mergers are expected to rotate rapidly and/or possess chemical peculiarities resulting from the exposure of the layers processed by CNO nuclear reactions. All other binary mergers are indistinguishable from the collisionally formed mergers. The results show that binary-formed BSs may constitute at least a substantial fraction of all BSs in a GC. Tables 2-7 are available in electronic form at http://www.aanda.org

  11. An Orbital Period Investigation of the W UMa-Type Binary Y Sextantis

    NASA Astrophysics Data System (ADS)

    He, Jia-Jia; Qian, Sheng-Bang

    2007-12-01

    Four charge-coupled device (CCD) photometric times of light minimum of the overcontact binary Y Sex obtained from 2004 to 2007 are presented. It has been discovered that the light curve of Y Sex is variational. Combining the present times of light minimum with values collected from the literature, we investigated the orbital period changes of the system. It has been found that there may exist two cyclic period oscillations in the O - C diagram of Y Sex. One oscillates at a period of 51.22yr with an amplitude of 0.0218d, and the other changes at a period of 32.10yr with an amplitude of 0.0100d. The period oscillations can be explained either by the light-time effect via the presence of an unseen third body and an unseen fourth body or by magnetic-activity cycles of the components.

  12. Unified Multi-speed analysis (UMA) for the condition monitoring of aero-engines

    NASA Astrophysics Data System (ADS)

    Nembhard, Adrian D.; Sinha, Jyoti K.

    2015-12-01

    For rotating machinery in which speeds and dynamics constantly change, performing vibration-based condition monitoring can be challenging. Thus, an effort is made here to develop a Unified Multi-speed fault diagnosis technique that can exploit useful vibration information available at various speeds from a rotating machine in a single analysis. Commonly applied indicators are computed from data collected from a rig at different speeds for a baseline case and different faults. Four separate analyses are performed: single speed at a single bearing, integrated features from multiple speeds at a single bearing, single speed for integrated features from multiple bearings and the proposed Unified Multi-speed analysis. The Unified Multi-speed approach produces the most conspicuous separation and isolation among the conditions tested. Observations made here suggest integration of more dynamic features available at different speeds improves the learning process of the tool which could prove useful for aero-engine condition monitoring.

  13. Controls on lava lake level at Halema`uma`u Crater, Kilauea Volcano

    NASA Astrophysics Data System (ADS)

    Patrick, M. R.; Orr, T. R.

    2013-12-01

    Lava level is a fundamental measure of lava lake activity, but very little continuous long-term data exist worldwide to explore this aspect of lava lake behavior. The ongoing summit eruption at Kilauea Volcano began in 2008 and is characterized by an active lava lake within the eruptive vent. Lava level has been measured nearly continuously at Kilauea for several years using a combination of webcam images, laser rangefinder, and terrestrial LIDAR. Fluctuations in lava level have been a common aspect of the eruption and occur over several timescales. At the shortest timescale, the lava lake level can change over seconds to hours owing to two observed shallow gas-related processes. First, gas pistoning is common and is driven by episodic gas accumulation and release from the surface of the lava lake, causing the lava level to rise and fall by up to 20 m. Second, rockfalls into the lake trigger abrupt gas release, and lava level may drop as much as 10 m as a result. Over days, cyclic changes in lava level closely track cycles of deflation-inflation (DI) deformation events at the summit, leading to level changes up to 50 m. Rift zone intrusions have caused large (up to 140 m) drops in lava level over several days. On the timescale of weeks to months, the lava level follows the long-term inflation and deflation of the summit region, resulting in level changes up to 140 m. The remarkable correlation between lava level and deflation-inflation cycles, as well as the long-term deformation of the summit region, indicates that the lava lake acts as a reliable 'piezometer' (a measure of liquid pressure in the magma plumbing system); therefore, assessments of summit pressurization (and rift zone eruption potential) can now be carried out with the naked eye. The summit lava lake level is closely mirrored by the lava level within Pu`u `O`o crater, the vent area for the 30-year-long eruption on Kilauea's east rift zone, which is 20 km downrift of the summit. The coupling of these lava levels implies an efficient hydraulic connection between the summit and east rift zone vents. This connection has been indicated previously with geophysical data and is reinforced in a new quantitative manner with lava level data. Lastly, the current lava level at the summit is significantly lower than the mean level measured in the crater during continuous lava lake activity in the early 1900s. This is probably because the ongoing eruption at Pu`u `O`o 'taps' the magma supplied to the summit reservoir. Should the Pu`u `O`o eruption stop, the lava level at the summit would certainly rise in response. The precise correspondence between lava lake level and deformation of the summit implies that the lake level is a good indication of the pressure state of the magma reservoir. Tracking lava level over time may therefore provide an indication of the potential for future changes in eruptive activity. Such an observation has clear relevance for monitoring analogous open-vent basaltic volcanoes, especially where other measures of volcanic activity, like seismic or deformation measurements, may be lacking.

  14. Contact binary stars of the W UMa-type as distance tracers

    NASA Astrophysics Data System (ADS)

    Rucinski, Slavek M.

    2004-07-01

    Contact binaries can be used for distance determinations of stellar systems. They are easy to discover and identify and are very abundant among solar-type stars, particularly for MV>+3. The period-luminosity-colour (PLC) relations have similar properties to those for pulsating stars and can currently predict individual values of MV to about ±0.25 mag.

  15. Escola versus Televisao: Uma Questao de Linguagem (School versus Television: A Question of Language).

    ERIC Educational Resources Information Center

    Belloni, Maria Luiza

    1995-01-01

    Discusses the increasing presence of technology in social life and its effects on the educational processes. Presents research results about cognitive abilities and the "audiovisual language" typical of the younger generations. Discusses how to adapt the practice of education to these new requirements or necessities of the children who…

  16. First photometric study of the W UMa system GSC 1042-2191

    NASA Astrophysics Data System (ADS)

    Bulut, A.; Bulut, İ.; Demircan, O.

    2016-04-01

    We present new photometric observations covering eight minima times for the eclipsing binary GSC 1042-2191. The light curves in BVRI colors were analyzed by using WD-code for the system parameters. Eight minima times were obtained from the new observations. The system is found a low mass ratio (q = 0.148), A-type over-contact binary with a fill out parameter of f = 65.01 ± 12.18%. The preliminary absolute dimensions (M1= 1.26 ± 0.06 M⊙, M2 = 0.18 ± 0.06 M⊙, R1 = 1.54 ± 0.20 R⊙, R2 = 0.69 ± 0.01 R⊙, L1 =3.30 ± 0.30 L⊙ and L2 = 0.59 ± 0.20 L⊙) indicate the very much oversized and over-luminous secondary component, by assuming the present luminosity of the secondary is its main sequence luminosity, we predict the original mass is about 0.8 M⊙, this means the present secondary could be transferred and/or lost 77% of its original mass and only its core is left.

  17. Depression and anxiety following deep brain stimulation in Parkinson's disease: systematic review and meta-analysis.

    PubMed

    Couto, Maria Inês; Monteiro, Ana; Oliveira, Ana; Lunet, Nuno; Massano, João

    2014-01-01

    Introdução: A estimulação cerebral profunda (ECP) é eficaz na doença de Parkinson (DP) avançada, melhorando sintomas motores, flutuações e a qualidade de vida. No entanto, têm sido reportados efeitos adversos psiquiátricos, mas de uma forma variável e não padronizada. O objectivo deste artigo é analisar e sumarizar a evidência publicada sobre sintomas depressivos e ansiedade em doentes com DP após ECP, através de revisão sistemática e meta-análise. Material e Métodos: A PubMed foi pesquisada até Maio 2012 para identificar os estudos que avaliaram sintomas depressivos e ansiedade em doentes com doença de Parkinson submetidos a estimulação cerebral profunda bilateral do núcleo subtalâmico (NST) ou globo pálido interno (GPi). Foram feitas meta-análises com modelo de efeitos aleatórios para grupos de pelo menos três estudos homogéneos em relação ao desenho e instrumentos utilizados. Resultados: Foram selecionadas 63 referências; 98,4% continham dados relativos a escalas de avaliação de depressão e 38,1% relativos a ansiedade. Dois estudos não discriminavam o alvo usado; nos restantes 61 foi feita avaliação de curto prazo em 37 (60,7%), de médio prazo em 36 (59,0%) e de longo prazo em 5 (8,2%). Foram encontrados dados sobre variação pré/pós operatória em 57 (93,4%) estudos e 16 (26,2%) continham dados comparando ECP-NST versus outros grupos: ECP-GPi (n = 4 estudos, 25,0%), elegíveis para cirurgia (n = 6, 37,5%), e tratamento médico (n = 7, 43,8%). Discussão: É aparente a melhoria de depressão e ansiedade após ECP, sobretudo a curto prazo, efeito que tende a esbater-se em avaliações posteriores. Em relação à depressão a ECP-NST mostrou-se superior ao tratamento médico, mas não em comparação com o grupo de controlo elegível para cirurgia. Verificou-se o resultado oposto para a ansiedade, uma vez que os resultados favorecem o tratamento médico sobre a ECP-NST, e esta sobre o grupo de elegíveis para cirurgia

  18. TIBIOTALOCALCANEAL ARTHRODESIS WITH LATERAL COMPRESSION PLATE

    PubMed Central

    Coughlin, Michael J.; Nery, Caio; Baumfeld, Daniel; Jastifer, James

    2015-01-01

    Objective: The objective of this study was to evaluate the short-term clinical and radiographic results from a TTC fusion procedure using a lateral locking plate specifically designed for this purpose. Methods: All the fourteen patients were evaluated using a variety of methods, including a visual analogue scale (VAS), the AOFAS hindfoot score and a subjective satisfaction scale. The average follow-up was 10 months. Results: The average AOFAS score improved from 41 points preoperatively to 63 points postoperatively. The VAS pain score decreased from 7 to 3 points. Four patients reported excellent results, eight good, one fair and one poor. Conclusion: Our study provides support for using a specially designed plate for TTC fusion in hindfoot salvage surgery. RESUMO Objetivo: O propósito deste estudo é avaliar os resultados clínicos e radiológicos a curto prazo do procedimento de fusão tíbio-talo-calcaneana (TTC) com o uso de uma placa lateral bloqueada específicamente concebida para este fim. Métodos: Todos os 14 pacientes foram avaliados usando uma variedade de métodos, incluindo a escala analógico visual da dor (EAV), escore da AOFAS para o retropé e escala subjetiva de satisfação. O acompanhamento médio foi de 10 meses. Resultados: O escore AOFAS médio melhorou de 41 pontos no período pré-operatório para 63 pontos no período pós-operatório. O escore da dor (EAV) caiu de 7 para 3 pontos. Quatro pacientesforam classificados como excelentes resultados, oito bons, um moderado e um ruim. Conclusão: Nosso estudo dá suporte ao uso da placa especialmente desenhada para a fusão tibio-talo-calcaneana (TTC) nas cirurgias de salvamento do retropé. PMID:27047852

  19. [Identification and preservation of parathyroid glands in cadaver parts].

    PubMed

    Melo, Catarina; Bernardes, António; Carvalho, Lina

    2013-01-01

    Introdução: É indispensável ter um conhecimento profundo da morfologia da glândula tiróide e das estruturas com ela relacionadas no compartimento anterior do pescoço, para minimizar a morbilidade decorrente da cirurgia da tiróide, nomeadamente a lesão das glândulas paratiróides e dos nervos laríngeos. Este estudo pretendeu identificar glândulas paratiróides em peças de cadáver, confirmando-as histologicamente.Material e Métodos: Foram usadas 20 peças de cadáver para simular tiroidectomias. Durante a dissecção, foram isoladas as glândulas tiróides e eventuais glândulas paratiróides, que foram submetidas a estudo histológico.Discussão: Foram dissecadas 20 peças de cadáver (regiões cervicais anteriores), sendo isolados 48 fragmentos que correspondiam a eventuais glândulas paratiróides, dos quais 35 foram confirmados histologicamente como sendo efectivamente paratiróides. Os 20 casos foram, então, divididos em três grupos, de acordo com o número de paratiróides confirmadas histologicamente. No primeiro grupo, constituído por 11 casos, todas as eventuais paratiróides foram confirmadas. No segundo grupo, constituído por seis casos, apenas algumas paratiróides foram confirmadas. No terceiro grupo, constituído por três casos, nenhuma das eventuais paratiróides isoladas era efectivamente paratiróide. Em sete das 20 glândulas tiróides isoladas, foram identificadas oito paratiróides no estudo histológico: quatro sub-capsulares; três extra-capsulares e uma intra-tiróideia. As dimensões das paratiróides não tinham relação estatisticamente significativa.Conclusão: O conhecimento da anatomia das estruturas do compartimento central do pescoço e das suas variações mais frequentes diminui, mas não elimina a morbilidade da cirurgia da tiróide, nomeadamente a excisão iatrogénica das paratiróides, cuja dificuldade de identificação foi evidenciada nas peças dissecadas.

  20. Chest CT findings in patients with dysphagia and aspiration: a systematic review.

    PubMed

    Scheeren, Betina; Gomes, Erissandra; Alves, Giordano; Marchiori, Edson; Hochhegger, Bruno

    2017-07-31

    The objective of this systematic review was to characterize chest CT findings in patients with dysphagia and pulmonary aspiration, identifying the characteristics and the methods used. The studies were selected from among those indexed in the Brazilian Virtual Library of Health, LILACS, Indice Bibliográfico Español de Ciencias de la Salud, Medline, Cochrane Library, SciELO, and PubMed databases. The search was carried out between June and July of 2016. Five articles were included and reviewed, all of them carried out in the last five years, published in English, and coming from different countries. The sample size in the selected studies ranged from 43 to 56 patients, with a predominance of adult and elderly subjects. The tomographic findings in patients with dysphagia-related aspiration were varied, including bronchiectasis, bronchial wall thickening, pulmonary nodules, consolidations, pleural effusion, ground-glass attenuation, atelectasis, septal thickening, fibrosis, and air trapping. Evidence suggests that chest CT findings in patients with aspiration are diverse. In this review, it was not possible to establish a consensus that could characterize a pattern of pulmonary aspiration in patients with dysphagia, further studies of the topic being needed. RESUMO O objetivo deste estudo foi realizar uma revisão sistemática dos achados de TC de tórax que caracterizem aspiração pulmonar em pacientes com disfagia, identificando as características e os métodos utilizados. Para a seleção dos estudos, foram utilizadas as bases de dados da Biblioteca Virtual em Saúde, LILACS, Indice Bibliográfico Español de Ciencias de la Salud, Medline, Biblioteca Cochrane, SciELO e PubMed. A busca foi realizada no período entre junho e julho de 2016. Foram incluídos e revisados cinco artigos, todos realizados nos últimos cinco anos, publicados em língua inglesa e oriundos de diferentes países. O tamanho da amostra nos estudos selecionados variou de 43 a 56 pacientes

  1. Comparing the performance of the SF-6D and the EQ-5D in different patient groups.

    PubMed

    Ferreira, Lara N; Ferreira, Pedro L; Pereira, Luis N

    2014-01-01

    Introdução: O objectivo geral deste artigo consiste em comparar o desempenho do EQ-5D e do SF-6D em quatro grupos de doentes que sofrem de asma, doença pulmonar obstrutiva crónica, cataratas e artrite reumatóide. Em particular, este artigo tem dois objectivos específicos: 1) estudar o nível de concordância entre os índices e os sistemas descritivos das dimensões do SF-6D e EQ-5D, e 2) analisar a capacidade de discriminação dos instrumentos.Material e Métodos: Uma amostra de 643 doentes respondeu ao SF-36v2 e ao EQ-5D. Foram analisados a capacidade de discriminação dos instrumentos, bem como o nível de concordância entre os índices e os sistemas descritivos das dimensões do SF-6D e EQ-5D. O nível de concordância entre os instrumentos foi estudado com base em coeficientes de correlação e nos gráficos de Bland-Altman, enquanto a influência da condição médica e de outras variáveis de natureza sociodemográfica nos índices foi analisada com o recurso a testes não paramétricos. Utilizaram-se também testes para amostras emparelhadas para identificar diferenças entre osscores finais dos instrumentos.Resultados e Discussão: Verificou-se a existência de uma correlação forte e de uma concordância elevada entre os dois índices. Em termos globais, os índices diferem por condição médica e por grupo sociodemográfico e ambos os instrumentos demonstraram uma capacidade discriminativa semelhante entre grupos sociodemográficosConclusão: Confirmou-se a hipótese de que o SF-6D gera valores de utilidade superiores em populações com doenças. O SF-6D e o EQ-5D parecem comportar-se de forma diferente em cada uma das doenças analisadas, uma vez que as medidas descritivas diferem entre instrumentos e os coeficientes de correlação não são uniformes. Os resultados demonstraram que o EQ-5D e o SF-6D geram valores de utilidade diferentes, mas que existe uma concordância elevada entre os dois instrumentos. Pode-se concluir que os resultados

  2. [Laparoscopic cholecystectomy and open cholecystectomy in acute cholecystitis: critical analysis of 520 cases].

    PubMed

    Teixeira, João Araújo; Ribeiro, Carlos; Moreira, Luís M; de Sousa, Fabiana; Pinho, André; Graça, Luís; Maia, José Costa

    2014-01-01

    IntroduçÉo: Apesar do cepticismo com que inicialmente foi encarada, a colecistectomia laparoscópica é hoje a técnica de eleiçÉo na colecistite aguda. Torna-se, porém, importante avaliar os seus resultados, em comparaçÉo com a colecistectomia clássica, uma vez que esta última ainda é seguida por alguns cirurgiões em determinadas situações.Material e Métodos: No nosso estudo foram incluídos 520 doentes com colecistites agudas operados no Serviço de Cirurgia Geral do Hospital de S. JoÉo, entre 2007 e 2013, dos quais 412 (79,2%) por laparoscopia e 108 (20,8%) por via aberta, com uma incidência de conversÉo de 10,7%. Procedeu-se ao estudo relativo às doenças coexistentes, leucocitose, tempo decorrido entre o diagnóstico na urgência e a cirurgia, classificaçÉo ASA, complicações intra e pós-operatórias, mortalidade, reintervenções, lesÉo biliar e estadia hospitalar. Os doentes convertidos foram incluídos no grupo das colecistectomias laparoscópicas. A análise estatística baseou-se em processos descritivos e a avaliaçÉo das diferenças entre grupos foi realizada com base no teste exato de Fisher, sendo considerados valores significativos para p < 0,05.Resultados: Colecistectomia laparoscópica versus Colecistectomia aberta: Mortalidade: 0,7% vs 3,7% (p = 0,0369); Complicações per-operatórias: 3,6% vs 12,9% (p = 0,0006); Complicações pós-operatórias cirúrgicas: 7,7% vs 17,5% (p = 0,0055); Pós-operatórias médicas: 4,3% vs 5,5% (p = 0,6077); LesÉo da via biliar principal: 0,9% vs 1,8% (p = 0,6091); Reintervenções: 2,9% vs 5,5% (p = 0,2315); Internamento hospitalar inferior ou igual a quatro dias: 64,8% vs 18,5% (p < 0,0001). Na colecistectomia laparoscópica houve 10,7% de conversões: nas precoces (intervenções realizadas antes das 96 h após o diagnóstico na urgência) esta taxa foi de 8,8% e nas tardias (após aquele período de tempo mas no mesmo internamento) de 13,7% (p = 0,1425); Complicações nos doentes

  3. Phenotypes of asthma in low-income children and adolescents: cluster analysis.

    PubMed

    Cabral, Anna Lucia Barros; Sousa, Andrey Wirgues; Mendes, Felipe Augusto Rodrigues; Carvalho, Celso Ricardo Fernandes de

    2017-01-01

    objetivo foi determinar como crianças e adolescentes asmáticas de baixa renda no Brasil são distribuídos através de uma análise de clusters. Foram incluídos 306 crianças e adolescentes (6-18 anos de idade) com diagnóstico clínico de asma e sob tratamento médico por pelo menos um ano de acompanhamento. No momento da inclusão, todos os pacientes estavam clinicamente estáveis. Vinte variáveis comumente determinadas na prática clínica e consideradas importantes na definição dos fenótipos de asma foram selecionadas para a análise de clusters. As variáveis com alta multicolinearidade foram excluídas. Uma análise de clusters foi realizada utilizando-se um teste aglomerativo em duas etapas e log-likelihood distance measure. Três clusters foram definidos para nossa população. O cluster 1 (n = 94) incluiu indivíduos com função pulmonar normal, inflamação eosinofílica leve, poucas exacerbações, início mais tardio da asma e atopia leve. O cluster 2 (n = 87) incluiu pacientes com função pulmonar normal, número moderado de exacerbações, início precoce da asma, inflamação eosinofílica mais grave e atopia moderada. O cluster 3 (n = 108) incluiu pacientes com função pulmonar ruim, exacerbações frequentes, inflamação eosinofílica e atopia graves. A asma foi caracterizada por presença de atopia, número de exacerbações e função pulmonar em crianças e adolescentes de baixa renda no Brasil. As muitas semelhanças entre esta e outras análises de clusters de fenótipos indicam que essa abordagem apresenta boa generalização.

  4. Woman experiencing gynecologic surgery: coping with the changes imposed by surgery.

    PubMed

    Silva, Carolina de Mendonça Coutinho E; Vargens, Octavio Muniz da Costa

    2016-08-29

    Traqueloplastia. Realizadas entrevistas individuais em profundidade, gravadas e analisadas segundo a técnica de análise comparativa da Grounded Theory. a partir dos dados emergiram duas categorias - Percebendo um corpo diferente e sentindo-se uma pessoa diferente e Construindo o significado de mutilação. As mudanças vivenciadas fazem as mulheres construírem novos significados e mudar a percepção de si e do seu meio social. A partir da interação consigo mesmas e com este meio, ocorreu a reflexão sobre relacionamentos, a diferença no corpo e em si, nas funções que desempenha e sobre a mutilação provocada pela cirurgia. as participantes sentiram-se mulheres diferentes; a mutilação sentida desdobrou-se em concreta, pela perda do órgão, e abstrata, vinculada ao impacto na identidade social e funcional feminina. Percebe-se a importância da enfermeira estabelecer um cuidado multidimensional, que identifique as necessidades que vão além do corpo biológico. describir las sensaciones y percepciones que surgen de la cirugía ginecológica para las mujeres y analizar cómo experimentan los cambios generados por la cirugía. estudio cualitativo, descriptivo-exploratorio, que tenía el Interaccionismo Simbólico y la Grounded Theory como marco teórico y metodológico. Los sujetos fueron 13 mujeres sometidas a cirugía: Histerectomía abdominal total, Histerectomía Abdominal Total con Anexectomía bilateral, cirugía Wertheim-Meigs, Ooforectomía, Salpingectomía, Mastectomía, Cuadrantectomía y Traqueloplastia. Se realizaron entrevistas individuales en profundidad, registradas y analizadas de acuerdo con la técnica de análisis comparativo de la Grounded Theory. a partir de los datos surgieron dos categorías - Darse cuenta de un cuerpo diferente y sentirse una persona diferente y Construyendo el significado de la mutilación. Los cambios experimentados hacen que las mujeres construyan nuevos significados y cambien la percepción de si misma y el entorno social. A

  5. Translation, Cultural Adaptation and Validation of the Power of Food Scale for Use by Adult Populations in Portugal.

    PubMed

    Ribeiro, Gabriela; Santos, Osvaldo; Camacho, Marta; Torres, Sandra; Mucha-Vieira, Filipa; Sampaio, Daniel; Oliveira-Maia, Albino J

    2015-01-01

    Introdução: A Power of Food Scale é uma escala que avalia um constructo designado por fome hedónica, frequentemente definido como o apetite por alimentos de elevada palatibilidade, mais do que a sua ingestão propriamente dita. Este estudo teve como objetivo a caracterização das propriedades psicométricas de uma versão portuguesa da Power of Food Scale, nomeadamente da sua fiabilidade e validade de constructo. Material e Métodos: Os dados foram obtidos de 1266 participantes adultos, provenientes de três amostras distintas: duas amostras não clínicas e uma amostra clínica de indivíduos com obesidade severa, candidatos a cirurgia da obesidade. Resultados: Verificamos que a estrutura factorial da versão portuguesa da Power of Food Scale é semelhante à do questionário original e que apresenta fiabilidade teste-reteste e validade de constructo adequadas. Adicionalmente, apresentamos neste estudo o primeiro contributo para a definição de normas populacionais para os scores da Power of Food Scale. Discussão: A versão portuguesa da Power of Food Scale apresentou boas propriedades psicométricas: é um instrumento válido e fiável para a avaliação do constructo fome hedónica, suportando a sua utilização tanto em amostras clínicas como não clínicas, bem como em estudos longitudinais. Conclusão: Estes resultados demostram que a versão portuguesa da Power of Food Scale é um instrumento útil, tanto em contexto clínico, como de investigação, nomeadamente para o estudo do constructo fome hedónica em populações de língua portuguesa, incluindo populações clínicas de indivíduos com obesidade.

  6. Osteotomy at low-speed drilling without irrigation versus high-speed drilling with irrigation: an experimental study.

    PubMed

    Gaspar, João; Borrecho, Gonçalo; Oliveira, Pedro; Salvado, Francisco; Martins dos Santos, José

    2013-01-01

    Introdução: A cirurgia traumática pode afetar a maturação do tecido ósseo e, diminuir a previsibilidade de osteointegração, pelo que a lesão mecânica e térmica deve ser minimizada. O objectivo deste estudo foi avaliar as alterações histológicas imediatas provocadas pela osteotomia a 50 rpm sem irrigação e a 800 rpm com irrigação, no osso do coelho.Material e Métodos: Foram efectuadas 36 perfurações (18 com cada técnica) nas tíbias de seis coelhos adultos. A sequência debrocas utilizada foi: uma broca esférica com 1,5 mm de diâmetro, uma broca piloto com 2,0 mm de diâmetro, e uma broca com 3,5 mm de diâmetro. A cortical posterior das tíbias foi preservada, constituindo o osso de controlo. Procedeu-se à recolha das tíbias com os defeitos a analisar, para observação com microscópio óptico e análise qualitativa.Resultados: Os defeitos ósseos apresentaram bordos regulares. Observou-se tecido ósseo viável, vascularizado e com presença de osteócitos junto aos defeitos. A estrutura haversiana e lamelar do tecido encontrou-se mantida, bem como a rede vascular. A matriz extracelular não apresentou alterações. Os resultados indicam não haver diferenças histológicas entre as osteotomias a 800 rpm com irrigação e a 50 rpm sem irrigação.Conclusão: O nosso estudo sugere que as alterações no tecido ósseo provocadas pela osteotomia a 50 rpm sem irrigação e a 800 rpm com irrigação são semelhantes, e que ambas as técnicas mantêm o tecido ósseo viável para a colocação de implantes e respectiva osteointegração, cabendo ao clínico a escolha, em função de outras variáveis.

  7. Tuberculosis recurrence in a priority city in the state of São Paulo, Brazil.

    PubMed

    Vieira, Amadeu Antonio; Leite, Danila Torres; Adreoni, Solange

    2017-01-01

    To describe cases of tuberculosis recurrence (TBR), stratified by temporal classification (early or late TBR), and to identify possible predictors of such recurrence. This was an analytical retrospective observational epidemiological study involving a cohort of 963 new cases of pulmonary tuberculosis, reported and treated via the Tuberculosis Control Program in the city of Carapicuíba, Brazil. The study period was from 2000 to 2010. All of the pulmonary tuberculosis patients who successfully completed the treatment (with or without confirmation of cure) were selected and followed until December 31, 2012. Of the 963 cases, TBR occurred in 47 (4.88%). The mean time between the first and second tuberculosis episodes was 36.12 months. Of the 47 TBR cases, 16 (34.04%) occurred within the first 18 months after the completion of the initial treatment (early TBR) and 31 (65.96%) occurred thereafter (late TBR). There were statistically significant differences between the early and late TBR groups only regarding level of education (≤ 3 vs. > 3 years of schooling; p < 0.004) and weight gain at completion of the initial treatment (1.78 kg vs. 5.31 kg; p < 0.045)-not regarding any of the other variables studied. A low level of education might translate to poor treatment adherence, which impedes the killing of bacilli and facilitates their survival in a latent state, making it appear as if the treatment was effective. Minimal or no weight gain at completion of the initial treatment might be a reliable biomarker to be used by health care facilities that provide tuberculosis treatment. Descrever os casos de recorrência de tuberculose (RTB) e identificar possíveis preditores segundo a classificação RTB recente ou tardia. Estudo epidemiológico observacional analítico retrospectivo a partir de uma coorte de 963 casos novos de tuberculose pulmonar notificados e tratados no Programa de Controle de Tuberculose de Carapicuíba (SP). O período de estudo foi de 2000 a 2010. Todos

  8. Title: BVRI Photometric Study and Spectra of Algol type Pre-contact W UMa Binary, V500 Pegasi

    NASA Astrophysics Data System (ADS)

    Caton, Daniel B.; Samec, Ronald G.; Van Hamme, Walter V.; Robb, Russell M.; Clark, Jeremy; Faulkner, Danny R.

    2015-01-01

    V500 Pegasi is a NSVS and TYCHO variable, fortuitously observed by ASAS-3, 2003-2009. It is an eclipsing binary with a period of 0.57983 d. The light curves have the appearance of a detached binary. Our spectroscopy reveals that it is of F5V-type. A continuous14-year period study reveals a period increase in the orbital period at about the 1 sigma level. This is probably due to weak matter transfer to the primary component. The light curve has a large difference in primary and secondary amplitudes which is typical of detached binaries. The final solution shows a total secondary eclipse. The solution is that of a classical Algol system, but of solar type. As expected in binaries of this type, it has a large cool spot region. The secondary component has a temperature of ~4700 K (K3), which means it is somewhat over-luminous for its mass.

  9. VizieR Online Data Catalog: BVRI light curves and RV curves of 65 UMa (Zasche+, 2012)

    NASA Astrophysics Data System (ADS)

    Zasche, P.; Uhlar, R.; Slechta, M.; Wolf, M.; Harmanec, P.; Nemravova, J. A.; Korcakova, D.

    2012-04-01

    We perform a combined analysis of the light and radial velocity curves, as well as the period variation by studying the times of the minima and the interferometric orbit. A disentangling technique is used to perform the spectra decomposition. This combined approach allows us to study the long-term period changes in the system for the first time, identifying the period variation due to the motion on the visual orbit, in addition to some short-term modulation. (4 data files).

  10. Queda dos homicídios em São Paulo, Brasil: uma análise descritiva

    PubMed Central

    Peres, Maria Fernanda Tourinho; Vicentin, Diego; Nery, Marcelo Batista; de Lima, Renato Sérgio; de Souza, Edinilsa Ramos; Cerda, Magdalena; Cardia, Nancy; Adorno, e Sérgio

    2012-01-01

    Objetivo Descrever a evolução da mortalidade por homicídios no Município de São Paulo segundo tipo de arma, sexo, raça ou cor, idade e áreas de exclusão/inclusão social entre 1996 e 2008. Métodos Estudo ecológico de série temporal. Os dados sobre óbitos ocorridos no Município foram coletados da base de dados do Programa de Aprimoramento das Informações sobre Mortalidade, seguindo a Classificação Internacional de Doenças, Décima Revisão (CID-10). Foram calculadas as taxas de mortalidade por homicídio (TMH) para a população total, por sexo, raça ou cor, faixa etária, tipo de arma e área de exclusão/inclusão social. As TMH foram padronizadas por idade pelo método direto. Foram calculados os percentuais de variação no período estudado. Para as áreas de exclusão/inclusão social foram calculados os riscos relativos de morte por homicídio. Resultados As TMH apresentaram queda de 73,7% entre 2001 e 2008. Foi observada redução da TMH em todos os grupos analisados, mais pronunciada em homens (−74,5%), jovens de 15 a 24 anos (−78,0%) e moradores de áreas de exclusão social extrema (−79,3%). A redução ocorreu, sobretudo, nos homicídios cometidos com armas de fogo (−74,1%). O risco relativo de morte por homicídio nas áreas de exclusão extrema (tendo como referência áreas com algum grau de exclusão social) foi de 2,77 em 1996, 3,9 em 2001 e 2,13 em 2008. Nas áreas de alta exclusão social, o risco relativo foi de 2,07 em 1996 e 1,96 em 2008. Conclusões Para compreender a redução dos homicídios no Município, é importante considerar macrodeterminantes que atingem todo o Município e todos os subgrupos populacionais e microdeterminantes que atuam localmente, influenciando de forma diferenciada os homicídios com armas de fogo e os homicídios na população jovem, no sexo masculino e em residentes em áreas de alta exclusão social. PMID:21390415

  11. A critical review of period analyses and implications for mass exchange in W UMa eclipsing binaries: Part 2

    NASA Astrophysics Data System (ADS)

    Nelson, R. H.; Terrell, D.; Milone, E. F.

    2015-12-01

    This is the second of a series of four papers, the goal of which is to identify the overcontact eclipsing binary star systems for which a solid case can be made for mass exchange. To reach this goal, it is necessary first to identify those systems for which there is a strong case for period change. We have identified 60 candidate systems; in the first paper (Nelson et al., 2014) we discussed 20 individual cases; this paper continues with the next 20. For each system, we present a detailed discussion and evaluation concerning the observational and interpretive material presented in the literature. An eclipse timing (ET) diagram (or diagrams), commonly referred to as an "O-C diagram", that includes the latest available data accompanies each discussion. In paper 4, we will discuss the mechanisms that can effect period change and which of the 60 systems can be reliably concluded to exhibit mass exchange; we will also provide a list of marginal and rejected cases suitable for future work.

  12. A critical review of period analyses and implications for mass exchange in W UMa eclipsing binaries: Paper 3

    NASA Astrophysics Data System (ADS)

    Nelson, R. H.; Terrell, D.; Milone, E. F.

    2016-02-01

    This is the third of a series of four papers, the goal of which is to identify the overcontact eclipsing binary star systems for which a solid case can be made for mass exchange. To reach this goal, it is necessary first to identify those systems for which there is a strong case for period change. We have identified 60 candidate systems; in the first two papers (Nelson et al. 2014, 2016) we discussed 40 individual cases; this paper continues with the last 20. For each system, we present a detailed discussion and evaluation concerning the observational and interpretive material presented in the literature. At least one eclipse timing (ET) diagram, commonly referred to as an "O-C diagram", that includes the latest available data, accompanies each discussion. In paper 4, we will discuss the mechanisms that can cause period change and which of the 60 systems can be reliably concluded to exhibit mass exchange; we will also provide a list of marginal and rejected cases - suitable for future work.

  13. Revidierte Lichtwechselelemente für die W UMa-Sterne V417 Aql undSS Com.

    NASA Astrophysics Data System (ADS)

    Kämper, B.-C.

    The author presents period studies for V417 Aql and SS Com, using all available material. Recently published revised period for V417 Aql (Faulkner, 1983) is confirmed and further improved. There is evidence for period changes in the past, but not exceeding 10-5 P. In the A-type system SS Com, since 1937 a marked period increase of almost 2s has taken place.

  14. STS-116 MS Fuglesang works on the UMA on the STBD side of the S0 Truss during EVA 4

    NASA Image and Video Library

    2006-12-19

    S116-E-06880 (18 Dec. 2006) --- European Space Agency (ESA) astronaut Christer Fuglesang, STS-116 mission specialist, participates in the mission's fourth session of extravehicular activity (EVA) while Space Shuttle Discovery was docked with the International Space Station. Astronaut Robert L. Curbeam Jr. (out of frame), mission specialist, worked in tandem with Fuglesang, using specially-prepared, tape-insulated tools, to guide the array wing neatly inside its blanket box during the 6-hour, 38-minute spacewalk.

  15. CCD Photometric Study of the W UMa-Type Binary II Canis Majoris in the Field of Berkeley 33

    NASA Astrophysics Data System (ADS)

    Liu, Liang; Qian, Sheng-Bang; Zhu, Li-Ying; He, Jia-Jia; Yuan, Jinzhao; Dai, Zhibin; Liao, Wenping; Zhang, Jia

    2008-06-01

    The CCD photometric data of an EW-type binary, IICMa, which is a contact star in the field of the middle-aged open cluster Berkeley33, are presented. Acomplete R light curve was obtained. In the present work, using the five CCD epochs of light minimum [three of them were calculated from Mazur etal. (1993 MNRAS, 265, 405)'s data and two from our new data], the orbital period P was revised to 0.22919704days. The complete R light curve was analyzed by using the 2003 version of W-D (Wilson-Devinney) program. It is found that this is a contact system with a mass ratio of q=0.9 and a contact factor of f=4.1%. The high mass ratio (q=0.9) and the low contact factor (f=4.1%) indicate that the system just evolved into the marginal contact stage.

  16. [Multiple pulmonary nodules and posterior uveitis as unusual manifestation of pulmonary tuberculosis].

    PubMed

    Ibarburen González-Arenas, C; Zapatero Gaviria, A; Gómez Santos, D; García-Castaño, B; Tomás Ros, M; Merino Morales, F

    1990-12-01

    Pulmonar tuberculosis still being one of the diseases more frequent in our area, this producing different clinical and radiological presentation. A case with posterior uveitis and bilateral lungs nodules which required a thoracotomy to perform a diagnosis, is presented.

  17. THE ASSOCIATION OF EXPOSURE TO PARTICULATE MATTER AND RELATED AIR POLLUTANTS WITH SPECIFIC HEALTH EFFECTS IN HEALTHY HIGHWAY PATROL OFFICERS

    EPA Science Inventory

    Estimated exposures to ambient respirable particulate matter (PM) and related co-pollutants have been statistically associated with mortality and morbidity in epidemiological studies conducted throughout the world. Although some subpopulations (e.g., asthmatics; elderly, pulmonar...

  18. THE ASSOCIATION OF EXPOSURE TO PARTICULATE MATTER AND RELATED AIR POLLUTANTS WITH SPECIFIC HEALTH EFFECTS IN HEALTHY HIGHWAY PATROL OFFICERS

    EPA Science Inventory

    Estimated exposures to ambient respirable particulate matter (PM) and related co-pollutants have been statistically associated with mortality and morbidity in epidemiological studies conducted throughout the world. Although some subpopulations (e.g., asthmatics; elderly, pulmonar...

  19. [Surgical treatment of spinal tuberculosis: an orthopedic service experience].

    PubMed

    Soares do Brito, Joaquim; Batista, Nuno; Tirado, António; Fernandes, Pedro

    2013-01-01

    Introdução: A espondilodiscite de etiologia tuberculosa é responsável por mais de 40% do universo destas infeções. Enquanto a quimioterapia tuberculostática se mantém como gold-standard da terapêutica desta patologia, o tratamento cirúrgico tem lugar em situações muito específicas. Neste trabalho apresentam-se os resultados de 33 doentes com espondilodiscite tuberculosa operados no nosso serviço durante os últimos 15 anos.Objetivo: Avaliar retrospetivamente doentes com diagnóstico de espondilodiscite tuberculosa operados num período de 15 anos(1996 a 2011); avaliar opções cirúrgicas tomadas e respetivos resultados relativamente à resolução da infeção, controlo da deformidade e evolução da lesão neurológica.Material e Métodos: Análise retrospetiva dos processos clínicos e avaliações imagiológicas de doentes com diagnóstico de espondilodiscite tuberculosa operados entre 1996 e 2011. Foram identificados 33 doentes com idade média de 46,7 anos; 17 doentes apresentavam infeção torácica, 11 lombar e cinco toraco-lombar. O abcesso paravertebral foi identificado em 26 dos casos estudados, existindo extensão intracanalar em 16 doentes. Nove dos doentes avaliados apresentavam lesão neurológica. A abordagem cirúrgica por via anterior foi utilizada em sete casos, a via posterior em 11 e a abordagem combinada foi a preferida em 15 ocasiões. A quimioterapia antibacilar foi mantida em média por 14 meses, com seguimento médio de 24 meses.Resultados: Verificámos cura da infeção em todos os doentes, sendo documentados critérios de fusão óssea, em média, 10,6 meses pós-cirurgia. A abordagem anterior isolada não permitiu obter correção da deformidade inicial, enquanto a via posterior permitiu uma correção média de 12,7º e a via combinada uma correção média de 8,7º. Cinco dos doentes com lesão neurológica melhoraram 2 a 3 níveis na escala ASIA durante o seguimento pós-operatório. Como complicações referem-se 2

  20. Effects of indacaterol versus tiotropium on exercise tolerance in patients with moderate COPD: a pilot randomized crossover study.

    PubMed

    Berton, Danilo Cortozi; Santos, Álvaro Huber Dos; Bohn, Ivo; Lima, Rodrigo Quevedo de; Breda, Vanderléia; Teixeira, Paulo José Zimermann

    2016-01-01

    longa duração administrado uma vez por dia (indacaterol 150 µg) a um anticolinérgico de longa duração administrado uma vez por dia (tiotrópio 5 µg) quanto a seus efeitos na resistência ao exercício (limite de tolerância, Tlim) em pacientes com DPOC moderada. Os desfechos secundários foram seus efeitos na hiperinsuflação pulmonar, na dispneia causada pelo exercício e na dispneia na vida diária. Estudo piloto randomizado cruzado e simples cego com 20 pacientes (média de idade: 60,9 ± 10,0 anos; média do VEF1: 69 ± 7% do previsto). Parâmetros espirométricos, pontuação no Transition Dyspnea Index, Tlim e dispneia aos esforços foram comparados após três semanas de cada tratamento (com uma semana de intervalo entre os tratamentos). Dezenove pacientes completaram o estudo - um foi excluído por causa de exacerbação da DPOC. A melhora no Tlim tendeu a ser maior com tiotrópio do que com indacaterol (96 ± 163 s vs. 8 ± 82 s; p = 0,06). Em comparação com os valores basais, o Tlim melhorou significativamente com tiotrópio (aumentando de 396 ± 319 s para 493 ± 347 s; p = 0,010), mas não com indacaterol (aumentando de 393 ± 246 para 401 ± 254 s; p = 0,678). Não houve diferença entre os tratamentos quanto à melhora na pontuação na escala de dispneia de Borg e na insuflação pulmonar no "isotempo" e no pico do exercício. Também não houve diferenças significativas entre os tratamentos quanto à pontuação no Transition Dyspnea Index (1,5 ± 2,1 vs. 0,9 ± 2,3; p = 0,39). Em pacientes com DPOC moderada, o tiotrópio tende a melhorar o Tlim em comparação com o indacaterol. Não houve diferenças significativas entre os tratamentos quanto a seus efeitos na insuflação pulmonar, na dispneia durante o exercício e na dispneia na vida diária. São necessários mais estudos, com um número maior de pacientes, para confirmar nossos achados e explorar explicações mecanicistas. (ClinicalTrials.gov identifier: NCT01693003 [http://www.clinicaltrials.gov/]).

  1. Pulmonary Function in a Diving Population Aged Over 40 Years Old: A Cross-Sectional Study

    DTIC Science & Technology

    2000-08-01

    1992. Universidad de Murcia. Br.J.Ind.Med. 1987; 44:467-469. 14. MELERO MORENO C. Enfermedad 3. CALI-CORLEO R. Special medical pulmonar obstructiva...habilidades en patologia infecciosa Medical assessment of fitness to dive. Ewell. respiratoria. Sociedad espafiola de medicina Biomedical Seminars...diving experience to pulmonary function REQUENA JM. CARRERAS CASTELLET among U.S. Navy Divers.Undersea JM. Enfermedad pulmonar obstructiva Bimedical

  2. The history of the parathyroid surgery.

    PubMed

    Toneto, Marcelo Garcia; Prill, Shandi; Debon, Leticia Manoel; Furlan, Fernando Zucuni; Steffen, Nedio

    2016-01-01

    The authors conducted a review of the major aspects of progression of knowledge about the surgical treatment of hyperparathyroidism. Through literature review, we analyzed articles on the history of the evolution of anatomical, physiological, pathological and surgical knowledge of the parathyroid glands. Because of their unique anatomical features, the parathyroid glands were the last of the endocrine glands to be discovered, which greatly hindered proper treatment until the first decades of the twentieth century. Technological developments in the last 30 years greatly facilitated the location of the glands and hyperparathyroidism surgery. However, an experienced and dedicated surgeon is still essential to the excellence of treatment. RESUMO Os autores fizeram uma revisão dos principais aspectos históricos da progressão do conhecimento sobre o tratamento cirúrgico do hiperparatireoidismo. Por meio de revisão bibliográfica, foram analisados artigos selecionados sobre a história da evolução do conhecimento anatômico, fisiológico, patológico e cirúrgico das glândulas paratireoides. Devido às suas características anatômicas peculiares, as paratireoides foram as últimas das glândulas endócrinas a serem descobertas, o que dificultou sobremaneira seu tratamento adequado até as primeiras décadas do Século XX. A evolução tecnológica ocorrida nos últimos 30 anos facilitou sobremaneira a localização das glândulas e a cirurgia do hiperparatireoidismo. Contudo, um cirurgião experiente e dedicado ao tratamento dessa enfermidade ainda é fundamental para a excelência do tratamento.

  3. Causes of Death in an Acute Psychiatric Inpatient Unit of a Portuguese General Hospital.

    PubMed

    Barbosa, Sofia; Sequeira, Márcia; Castro, Sara; Manso, Rita; Klut Câmara, Catarina; Trancas, Bruno; Borja-Santos, Nuno; Maia, Teresa

    2016-08-01

    Introdução: Os doentes afectos de patologia psiquiátrica apresentam maior risco de morte, tanto por causas naturais como não naturais. Este estudo avalia as causas de morte de todos os doentes de uma unidade de internamento de agudos de Psiquiatria num hospital geral em Portugal, ao longo de dezasseis anos (de 1998 a 2013). Material e Métodos: Vinte e um doentes morreram na unidade de internamento de doentes agudos entre 1998 e 2013 (média 1,3 por ano). As características demográficas, os diagnósticos médicos e psiquiátricos foram recolhidos através de um estudo retrospectivo que consistiu na análise dos processos clínicos da amostra selecionada. Os doentes transferidos para outras enfermarias durante o internamento não foram incluídos no estudo. Resultados: As doenças do sistema circulatório foram as causas de morte mais prevalentes, ocorrendo em 2/3 dos doentes, incluindo embolismo pulmonar (n = 6), acidente vascular cerebral (n = 3), arritmia cardíaca (n = 2), enfarte agudo do miocárdio (n = 1), rutura de aneurisma da aorta abdominal (n = 1) e insuficiência cardíaca (n = 1). Dois doentes morreram de pneumonia e em quatro casos a causa de morte foi indeterminada. Apenas um caso de suicídio foi registado. Discussão: As doenças do aparelho circulatório foram as causas de morte mais frequentes nesta unidade de agudos. O suicídio em doentes internados, apesar de constituir um evento raro, é uma realidade que comporta consequências complexas para os profissionais de saúde, familiares e restantes doentes, devendo permanecer como foco de prevenção continuada. Conclusão: Os estudos de mortalidade são importantes para determinar a qualidade dos cuidados de saúde e criar recomendações para medidas preventivas.

  4. Myocardial Viability on Cardiac Magnetic Resonance.

    PubMed

    Souto, Ana Luiza Mansur; Souto, Rafael Mansur; Teixeira, Isabella Cristina Resende; Nacif, Marcelo Souto

    2017-05-01

    The study of myocardial viability is of great importance in the orientation and management of patients requiring myocardial revascularization or angioplasty. The technique of delayed enhancement (DE) is accurate and has transformed the study of viability into an easy test, not only for the detection of fibrosis but also as a binary test detecting what is viable or not. On DE, fibrosis equal to or greater than 50% of the segmental area is considered as non-viable, whereas that below 50% is considered viable. During the same evaluation, cardiac magnetic resonance (CMR) may also use other techniques for functional and perfusion studies to obtain a global evaluation of ischemic heart disease. This study aims to highlight the current concepts and broadly emphasize the use of CMR as a method that over the last 20 years has become a reference in the detection of infarction and assessment of myocardial viability. Resumo O estudo de viabilidade miocárdica é de grande importância para a orientação e manejo de pacientes que necessitam de cirurgia de revascularização miocárdica ou angioplastia. A técnica de realce tardio (RT) é precisa e transformou o estudo de viabilidade em um teste fácil, não só para a detecção de fibrose, mas também como um modelo binário para a detecção do que é ou não é viável. Uma fibrose identificada pelo RT é considerada como não viável quando igual ou maior do que 50% da área segmentar e como viável quando menor que 50%. A ressonância magnética cardíaca (RMC) também pode lançar mão de outras técnicas para estudo funcional e de perfusão para uma avaliação global da doença isquêmica do coração no mesmo exame. Este estudo tem como objetivo destacar os conceitos atuais e enfatizar amplamente o uso da RMC como um método que nos últimos 20 anos se tornou referência na detecção de infarto e avaliação de viabilidade miocárdica.

  5. Fungus ball of the paranasal sinuses: Report of two cases and literature review.

    PubMed

    Bosi, Guilherme Rasia; de Braga, Gustavo Lisbôa; de Almeida, Tobias Skrebsky; de Carli, Adriana

    2012-04-01

    Introdução: Bola fúngica dos seios paranasais é uma infecção não invasiva que se caracteriza por sua cronicidade, sendo a maioria relacionada com tratamento endodôntico prévio. Acomete principalmente o seio maxilar, embora todos os seios possam ser envolvidos. O principal agente etiológico é o Aspergillus spp. A tomografia computadorizada, devido às apresentações radiológicas características, sugere o diagnóstico que é realizado definitivamente através de análises histopatológicas. O tratamento padrão-ouro é a cirurgia sinusal endoscópica com antrostomia meatal média.Objetivo: Relatar dois casos de bola fúngica dos seios paranasais e ressaltar aspectos importantes desta patologia.Relato dos Casos: Caso 1) Paciente do sexo feminino, 78 anos, apresentou-se com queixas de dor facial há 6 meses e história prévia de tratamento endodôntico. Ao exame físico constatou-se a presença de secreção purulenta em meato médio esquerdo. O Raio X apresentou velamento completo do seio maxilar esquerdo, enquanto a tomografia computadorizada mostrou lesão calcificada neste local. Realizou-se sinusotomia que evoluiu bem. Caso 2) Paciente do sexo feminino, 70 anos, procurou atendimento por história de sinusites de repetição. Ao exame físico não se percebeu nenhuma particularidade. A tomografia computadorizada, assim como a ressonância magnética, detectou espessamento da parede mucosa do seio maxilar esquerdo, além de uma massa calcificada. Realizou-se a mesma sequência de tratamento e a paciente também evoluiu bem.Considerações finais: A infecção fúngica deve ser considerada nos pacientes que se apresentam com sinusite crônica, que não respondem ao uso de antibióticos e que possuem história de manipulação endodôntica.

  6. Impaired pulmonary function after treatment for tuberculosis: the end of the disease?

    PubMed

    Chushkin, Mikhail Ivanovich; Ots, Oleg Nikolayevich

    2017-01-01

    To evaluate the prevalence of pulmonary function abnormalities and to investigate the factors affecting lung function in patients treated for pulmonary tuberculosis. A total of 214 consecutive patients (132 men and 82 women; 20-82 years of age), treated for pulmonary tuberculosis and followed at a local dispensary, underwent spirometry and plethysmography at least one year after treatment. Pulmonary impairment was present in 102 (47.7%) of the 214 patients evaluated. The most common functional alteration was obstructive lung disease (seen in 34.6%). Of the 214 patients, 60 (28.0%) showed reduced pulmonary function (FEV1 below the lower limit of normal). Risk factors for reduced pulmonary function were having had culture-positive pulmonary tuberculosis in the past, being over 50 years of age, having recurrent tuberculosis, and having a lower level of education. Nearly half of all tuberculosis patients evolve to impaired pulmonary function. That underscores the need for pulmonary function testing after the end of treatment. Avaliar a prevalência de alterações da função pulmonar e investigar os fatores que afetam a função pulmonar em pacientes tratados para tuberculose pulmonar. Um total de 214 pacientes consecutivos (132 homens e 82 mulheres; 20-82 anos de idade), tratados para tuberculose pulmonar e acompanhados em um dispensário local, foi submetido a espirometria e pletismografia pelo menos um ano após o tratamento. O comprometimento pulmonar estava presente em 102 (47,7%) dos 214 pacientes avaliados. A alteração funcional mais comum foi o distúrbio ventilatório obstrutivo (observado em 34,6%). Dos 214 pacientes, 60 (28,0%) apresentaram função pulmonar reduzida (VEF1 abaixo do limite inferior de normalidade). Os fatores de risco para função pulmonar reduzida foram tuberculose pulmonar com cultura positiva no passado, idade acima de 50 anos, recidiva de tuberculose e menor nível de escolaridade. Quase metade de todos os pacientes com tuberculose

  7. [Contribution for the validation of the Portuguese version of EQ-5D].

    PubMed

    Ferreira, Pedro Lopes; Ferreira, Lara Noronha; Pereira, Luis Nobre

    2013-01-01

    Introdução: O EQ-5D permite a junção de duas componentes essenciais de qualquer medida de qualidade de vida relacionada com a saúde a ser usada em avaliações económicas de custo-utilidade: (i) um perfil descrevendo o estado de saúde em termos de domínios ou dimensões; e (ii) um valor numérico associado ao estado de saúde anteriormente descrito.Objectivo: A versão portuguesa do questionário EQ-5D foi finalizada em 1998, com base em normas de orientação definidas pelo Grupo EuroQol, incluindo os procedimentos de tradução e retroversão. Apesar da sua larga utilização em Portugal, até agora ainda não tinham sido publicados os estudos que conduziram inicialmente à versão portuguesa e à garantia de aceitabilidade, fiabilidade e validade. O propósito do presente artigo é, assim, documentar estes primeiros valores referentes à versão portuguesa do EQ-5D.Material e Métodos: Foram utilizadas três amostras diferentes: uma primeira com 1.500 indivíduos representativa da populaçãoportuguesa; uma segunda com 140 indivíduos apenas destinada ao teste da fiabilidade; e uma terceira amostra com 643 indivíduos doentes com cataratas, asma, doença pulmonar obstrutiva crónica ou artrite reumatoide.Resultados: A aceitabilidade foi avaliada pelo número de respostas em falta. Foi também encontrado um marcado efeito de teto com grande parte da amostra a não reportar quaisquer problemas nas dimensões do EQ-5D.Discussão: A validade de construção foi testada pela análise do grau com que valores baixos de EQ-5D estavam positivamente associados ao aumento da idade, ao ser do sexo feminino, e ao estar doente, assim como a valores de dimensões da escala SF-36v2. A validade convergente foi baseada nas correlações entre valores do EQ-5D e outras escalas específicas de condição de saúde. O EQ-5D apresentou correlações moderadas a altas com outras medidas de estado de saúde e de qualidade de vida relacionada com a saúde, específicas de cada

  8. Evaluation of pulmonary function and respiratory symptoms in pyrochlore mine workers.

    PubMed

    Borges, Ritta de Cássia Canedo Oliveira; Barros, José Cerqueira; Oliveira, Fabrício Borges; Brunherotti, Marisa Andrade; Quemelo, Paulo Roberto Veiga

    2016-01-01

    To identify respiratory symptoms and evaluate lung function in mine workers. This was a cross-sectional observational study involving production sector workers of a pyrochlore mining company. The subjects completed the British Medical Research Council questionnaire, which is designed to evaluate respiratory symptoms, occupational exposure factors, and smoking status. In addition, they underwent pulmonary function tests with a portable spirometer. The study involved 147 workers (all male). The mean age was 41.37 ± 8.71 years, and the mean duration of occupational exposure was 12.26 ± 7.09 years. We found that 33 (22.44%) of the workers had respiratory symptoms and that 26 (17.69%) showed abnormalities in the spirometry results. However, we found that the spirometry results did not correlate significantly with the presence of respiratory symptoms or with the duration of occupational exposure. The frequencies of respiratory symptoms and spirometric changes were low when compared with those reported in other studies involving occupational exposure to dust. No significant associations were observed between respiratory symptoms and spirometry results. Determinar a presença de sintomas respiratórios e avaliar a função pulmonar de trabalhadores da mineração. Estudo observacional de caráter transversal realizado com trabalhadores do setor de produção de uma mineradora de pirocloro. Para avaliar os sintomas respiratórios, fatores de exposição ocupacional e tabagismo, foi aplicado o questionário de sintomas respiratórios British Medical Research Council, e a função pulmonar foi avaliada utilizando-se um espirômetro portátil. Participaram do estudo 147 trabalhadores, todos do sexo masculino, com média de idade de 41,37 ± 8,71 anos e com tempo de exposição ocupacional de 12,26 ± 7,09 anos. Foi observado que 33 (22,44%) dos trabalhadores apresentaram sintomas respiratórios e que 26 (17,69%) dos trabalhadores apresentaram alguma alteração nos

  9. [Acute respiratory distress syndrome: case series, two years at an intensive care unit].

    PubMed

    Taborda, Lúcia; Barros, Filipa; Fonseca, Vitor; Irimia, Manuel; Carvalho, Ramiro; Diogo, Cláudia; Ramos, Armindo

    2014-01-01

    Introdução: A Síndrome de Dificuldade Respiratória Aguda apresenta incidência e mortalidade significativas em Cuidados Intensivos, justificando estudos adicionais, nomeadamente para definição de novas abordagens terapêuticas. Os autores propuseram-se caracterizaros casos duma Unidade de Cuidados Intensivos em dois anos.Material e Métodos: Procedeu-se a um estudo observacional retrospectivo dos casos admitidos numa Unidade de Cuidados Intensivos, cumprindo os critérios diagnósticos da American-European Consensus Conference on ARDS, tendo sido excluídos os não ventilados invasivamente. Pesquisados e submetidos a tratamento estatístico: dados demográficos, etiologia do Síndrome de Dificuldade Respiratória Aguda, comorbilidades, Índices de Gravidade, PaO2/FiO2, modalidades e parâmetros ventilatórios, compliance pulmonar, dias de ventilação mecânica invasiva, corticoterapia, terapêuticas de resgate, complicações, duração do internamento, óbitos.Resultados: Obtiveram-se 40 doentes, com uma mediana de 72,5 anos (amplitude interquartil 22) e um ratio feminino:masculino ≈1:1,86. Cinquenta e cinco por cento dos Síndrome de Dificuldade Respiratória Aguda tiveram etiologia pulmonar. A média do PaO2/ FiO2 mínimo foi 88mm Hg (IC 95%: 78,5-97,6). A média da PEEP máxima aplicada foi 12,4 cmH2O (Desvio Padrão 4,12) e a médiado Volume Corrente máximo utilizado foi 8,2 mL/Kg peso ideal (IC 95%: 7,7-8,6). A mediana dos dias de ventilação mecânica invasiva foi 10. Em 47,5% dos doentes foram administrados corticóides. Em 52,5% foi executado recrutamento alveolar. A complicação mais frequente foi a Pneumonia Associada a Ventilação (20%). A mediana da duração do internamento foi 10,7 dias (amplitude interquartil10,85). Faleceram 60% dos doentes. A probabilidade de outcome favorável ‘não óbito na Unidade de Cuidados Intensivos’ foi 4,4x superior nos doentes sob corticoterapia e 11x superior nos doentes com idade < 65 anos

  10. Factors associated with malnutrition in adolescent and adult patients with cystic fibrosis.

    PubMed

    Barni, Gabriela Cristofoli; Forte, Gabriele Carra; Forgiarini, Luis Felipe; Abrahão, Claudine Lacerda de Oliveira; Dalcin, Paulo de Tarso Roth

    2017-07-31

    , de acordo com seu estado nutricional: nutrição adequada, risco nutricional e desnutrição. O estudo incluiu 73 pacientes (média de idade: 25,6 ± 7,3 anos), dos quais 40 (54,8%) eram do sexo feminino. A média do índice de massa corporal foi de 21,0 ± 3,0 kg/m2, e a média do VEF1 foi de 59,7 ± 30,6% do previsto. Nessa amostra de pacientes, 32 (43,8%) ficaram no grupo com nutrição adequada, 23 (31,5%) ficaram no grupo com risco nutricional e 18 (24,7%) ficaram no grupo com desnutrição. A análise de regressão logística identificou três fatores independentes relacionados com o risco de desnutrição: escore de Shwachman-Kulczycki, VEF1 em % do previsto e idade. A desnutrição ainda é uma complicação comum em adolescentes e adultos com FC, não obstante o aconselhamento dietético. A desnutrição está relacionada com a idade, a gravidade clínica e o comprometimento da função pulmonar.

  11. Effects of passive inhalation of cigarette smoke on structural and functional parameters in the respiratory system of guinea pigs.

    PubMed

    Vasconcelos, Thiago Brasileiro de; Araújo, Fernanda Yvelize Ramos de; Pinho, João Paulo Melo de; Soares, Pedro Marcos Gomes; Bastos, Vasco Pinheiro Diógenes

    2016-01-01

    passivo apresentou um aumento significativo na degranulação de mastócitos (19,75 ± 3,77% vs. 42,53 ± 0,42%; p < 0,001), nos níveis de glutationa reduzida (293,9 ± 19,21 vs. 723,7 ± 67,43 nM/g de tecido; p < 0,05) e uma redução significativa no transporte mucociliar (p < 0,05), provocando alterações significativas na função pulmonar, tanto na PImáx como na PEmáx (p < 0,05 para ambas), e hiper-reatividade nas vias aéreas. A inalação passiva da fumaça de cigarro ocasionou aumentos significativos na degranulação de mastócitos e no estresse oxidativo. Esse processo inflamatório parece ter influenciado a diminuição do transporte mucociliar e causado alterações na função pulmonar, proporcionando um quadro de hiper-reatividade traqueal.

  12. Parcial Nephrectomies - results of 12 years from an Oncology Institution.

    PubMed

    Freitas, Rui; Cruz, Ricardo; Antunes, Luís; Araújo, Paulo; Silva, Pedro; Saraiva, Luis; Magalhães, Sanches; Moreira Silva, Vitor; Morais, António; Lobo, Francisco; Oliveira, Jorge

    2016-02-01

    Introdução: O diagnóstico de carcinoma de células renais tem vindo a aumentar nos últimos anos, sobretudo pelo seu diagnóstico incidental, e de forma paralela tem aumentado as indicações para cirurgia preservadora de nefrónios.Objectivos: Rever uma série de nefrectomias parciais de uma instituição oncológica em termos técnicos, sobrevida, variação da função renal. Material e Métodos: Análise retrospectiva de todos os doentes com neoplasia renal, submetidos a nefrectomia parcial na nossa instituição entre janeiro de 2000 e dezembro de 2012. Resultados: Foram realizadas 156 nefrectomias parciais, 85 em homens e 71 em mulheres, com média de idades de 62 '± 15 anos. A abordagem foi em 23 casos transperitoneal laparoscópica sendo nos restantes 133 por lombotomia. O tempo médio de isquemia foi < 25 minutos em todos os doentes. A taxa de complicações foi de 10,9%, a maioria grau 2 e 3 da escala de Clavien-Dindo. Os tumores tinham dimensões médias de 2,9 '± 1,4 cm e a margem cirúrgica estava focalmente atingida por tumor em 9,6% dos casos. Em termos histológicos, verificou-se em 26,2% dos casos a existência de carcinoma de células renais de células claras, sendo os oncocitomas a neoplasia benigna mais frequente com 14,7% do total. No seguimento dos doentes verificaram-se 4 casos de recidiva e um óbito pela doença. A variação média na taxa de filtração glomerular estimada foi de -5,3 mL/min por 1,73 m2 (p < 0,001). Não se verificou associação entre tempo de isquemia, índice de massa corporal, idade, score ASA, existência de complicações com este decréscimo da taxa de filtração glomerular. Discussão: Os casos de margens cirúrgicas positivas são ligeiramente superiores ao descrito na literatura, todavia não foram encontrados factores preditivos para tal e em última análise não foi encontrada recidiva tumoral ou qualquer influência na sobrevida destes doentes. Apesar de ter se ter verificado uma diminui

  13. FROM COMPLEX EVOLVING TO SIMPLE: CURRENT REVISIONAL AND ENDOSCOPIC PROCEDURES FOLLOWING BARIATRIC SURGERY.

    PubMed

    Zorron, Ricardo; Galvão-Neto, Manoel Passos; Campos, Josemberg; Branco, Alcides José; Sampaio, José; Junghans, Tido; Bothe, Claudia; Benzing, Christian; Krenzien, Felix

    complicated endoscopic solutions. Bypass gástrico em Y-de-Roux (BGYR) é procedimento padrão em cirurgia bariátrica. Gastrectomia vertical e banda gástrica, embora com bons resultados na literatura, estão mostrando taxas mais elevadas de insucesso no tratamento para reduzir a morbidade associada à obesidade e peso corporal. Outros problemas pós-operatórios podem ocorrer, como a erosão da banda, e doença do refluxo gastroesofágico refratária à medicação. Portanto, conversão laparoscópica para BGYR pode ser alternativa eficaz, desde que indicações específicas para a revisão sejam cumpridas. Analisar os nossos dados e os da literatura sobre procedimentos bariátricos revisionais para avaliar melhores alternativas para a prática atual. Foram efetuados experiência institucional e revisão sistemática da literatura sobre cirurgia bariátrica revisional. Procedimentos endoscópicos estão sendo aplicados recentemente para melhorar a falha e complicações de procedimentos bariátricos. Falha terapêutica após BGYR ocorre em até 20%. A redução transoral é atualmente um método alternativo para reduzir a anastomose gastrojejunal. A gastrectomia vertical pode apresentar aumento de volume e do diâmetro do pouch , o qual podem ser reduzidos por meio de sutura total endoscópica longitudinal. Síndrome de dumping e episódios de hipoglicemia grave (neuroglicopenia) podem estar presentes nos pacientes com BGYR. Os episódios hipoglicêmicos devem ser avaliados e geralmente podem ser tratados convencionalmente. Para evitar pancreatectomia parcial ou conversão à anatomia normal, uma nova abordagem laparoscópica com ressecção do remanescente gástrico e interposição de jejuno, pode ser aplicada como alternativa em não-respondedores. Episódios de hipoglicemia melhoram, enquanto a perda de peso é mantida. Procedimentos revisionais endoscópicos podem ser aplicados após cirurgia bariátrica em pacientes com sintomas colaterais ou na falha do tratamento

  14. PSYCHOLOGICAL PROFILE OF PATIENTS ELIGIBLE FOR BARIATRIC SURGERY.

    PubMed

    Ribeiro, Graziela Aparecida Nogueira de Almeida; Giampietro, Helenice Brizolla; Belarmino, Lídia Barbieri; Salgado-Júnior, Wilson

    The psychologist who works in bariatric surgery has a role to receive, evaluate, prepare and educate the patient who will undergo the surgical procedure. Psychological evaluation becomes important in so far as allows us to obtain data on personal and familiar history and allow tracing of possible psychopathology. To collect data on psychological evaluations of patients in a bariatric surgery service of a public hospital in order to describe the psychological profile of patients in this service. Data were collected from 827 patients between 2001 and 2015, using data from an interview, Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI) and Binge Eating Scale (BES). The mean age of patients before surgery was 39 years+/- 10, the mean BMI was 51 kg/m²+7, and most patients (81%) were female. The average score on the BDI was 14.8+8 and women had significantly higher scores than men. On the BAI the average score was 11+8 and on the ECAP was 14+8, both with no difference between groups. Psychosocial characteristics of the patients points to the significant presence of indicators of depression, with low levels of anxiety and binge eating. O psicólogo que atua na área da cirurgia bariátrica tem papel de acolher, avaliar, preparar e conscientizar o paciente que vai ser submetido ao procedimento cirúrgico. A avaliação psicológica reveste-se de importância na medida em que obtém dados sobre história pessoal e familiar, além do rastreio de possíveis alterações psicopatológicas. Analisar as avaliações psicológicas dos pacientes de um serviço de cirurgia bariátrica de um hospital público, buscando traçar o perfil psicológico dos pacientes deste serviço. Foram coletados dados de 827 pacientes entre 2001 e 2015, utilizando-se dados de uma entrevista, Inventário Beck de Depressão (BDI), Inventário Beck de Ansiedade (BAI) e Escala de Compulsão Alimentar Periódica (ECAP). A idade média dos pacientes antes da operação foi 39 anos+10 e o IMC m

  15. Comparison of Two Central Venous Pressure Control Strategies to Prevent Atrial Fibrillation After Coronary Artery Bypass Grafting.

    PubMed

    Costa, Mario Augusto Cray da; Lirani, Wesley; Wippich, Ana Caroline; Lopes, Luana; Tolentino, Eduardo de Souza; Zampar, Beatriz; Schafranski, Marcelo Derbli

    2017-04-01

    pacientes foram randomizados em dois grupos, G15 e G20, mantidos com PVC máxima de 15 cmH2O e 20 cmH2O, respectivamente. Foram incluídos 70 pacientes em cada grupo. A incidência da arritmia em G15 foi de 8,57% e, no G20, de 22,86%, com redução de risco absoluto de 14,28% e número necessário para tratar (NNT) de 7 (p = 0,03). Mortalidade (G15 = 5,71%; G20 = 11,42%; p = 0,07), tempo de internamento (G15 = 7,14 dias; G20 = 8,21 dias; p = 0,36), número de enxertos (medianas: G15 = 3, G2 = 2; p = 0,22) e uso de circulação extracorpórea (G15 = 67,10%; G20 = 55,70%; p = 0,22) mostraram-se estatisticamente semelhantes. A idade (p = 0,04) e o tempo de internamento (p = 0,001) foram significativamente maiores nos pacientes que desenvolveram FA nos dois grupos. Manter a PVC com valores mais baixos nas primeiras 72h após a cirurgia de RM reduz o risco relativo de FA e pode ser uma ferramenta útil na prevenção da FA após RM.

  16. "Canteiro Escola"--Uma Resposta da Industria da Construcao no Contexto Produtivo Atual (The "Building Site" School--A Construction Industry Answer in the Actual Productive Context).

    ERIC Educational Resources Information Center

    Barone, Rosa Elisa; Letelier, Maria Eugenia

    1995-01-01

    Presents examples of the discourse of construction industry personnel involved in workplace basic education in Brazil. Reports on the perspective of the workers/students and on the experiences and the vision of those who implement the educational programs. Identifies the limits of the schooling process and the difficulties inherent in the present…

  17. Decolourisation Capabilities of Ligninolytic Enzymes Produced by Marasmius cladophyllus UMAS MS8 on Remazol Brilliant Blue R and Other Azo Dyes

    PubMed Central

    Roslan, Hairul Azman

    2017-01-01

    Marasmius cladophyllus was examined for its ability to degradatively decolourise the recalcitrant dye Remazol Brilliant Blue R (RBBR) and screened for the production of ligninolytic enzymes using specific substrates. Monitoring dye decolourisation by the decrease in absorbance ratio of A592/A500 shows that the decolourisation of RBBR dye was associated with the dye degradation. Marasmius cladophyllus produces laccase and lignin peroxidase in glucose minimal liquid medium containing RBBR. Both enzyme activities were increased, with laccase activity recorded 70 times higher reaching up to 390 U L−1 on day 12. Further in vitro RBBR dye decolourisation using the culture medium shows that laccase activity was correlated with the dye decolourisation. Fresh RBBR dye continuously supplemented into the decolourised culture medium was further decolourised much faster in the subsequent round of the RBBR dye decolourisation. In vitro dye decolourisation using the crude laccase not only decolourised 76% of RBBR dye in just 19 hours but also decolourised 54% of Orange G and 33% of Congo red at the same period of time without the use of any exogenous mediator. This rapid dye decolourisation ability of the enzymes produced by M. cladophyllus thus suggested its possible application in the bioremediation of dye containing wastewater. PMID:28168194

  18. BVRI Photometric 2015 WD Analysis of the Southern Totally Eclipsing, Solar-type, Shallow-contact W UMa Binary, DD Indus

    NASA Astrophysics Data System (ADS)

    Samec, Ronald G.; Norris, Cody L.; Van Hamme, Walter; Faulkner, Danny R.; Hill, Robert L.

    2016-12-01

    Observations and a 2015 Wilson-Devinney Program analysis are undertaken for the first precision observations of DD Indi. DD Indi is of solar-type (T 1 ˜ 5750 K) and was determined to be a shallow-contact eclipsing binary. It was observed from 2013 June through September at Cerro Tololo InterAmerican Observatory in remote mode. The 24 inch Boller and Chivens reflector, now under management by The Southeastern Association for Resarch in Astronomomy (SARA) was used. Five new eclipse timings were obtained, for three primary and two secondary eclipses. Seven more eclipse timings were calculated from All Sky Automated Survey data. A possibly increasing period was found from all available eclipse timings with a 5 ± 2 × 10-11 × E 2 quadratic term. A BVR c I c simultaneous synthetic light-curve analysis reveals that the system has a mass ratio of ˜0.46, a ˜ 140 K component temperature difference, and two weak cool spots. The Roche Lobe fill-out of this W-type binary is only ˜11%, and an inclination of ˜86° was determined. A time of constant light of ˜16 minutes is measured around phase zero. More detail is included in this report.

  19. "Canteiro Escola"--Uma Resposta da Industria da Construcao no Contexto Produtivo Atual (The "Building Site" School--A Construction Industry Answer in the Actual Productive Context).

    ERIC Educational Resources Information Center

    Barone, Rosa Elisa; Letelier, Maria Eugenia

    1995-01-01

    Presents examples of the discourse of construction industry personnel involved in workplace basic education in Brazil. Reports on the perspective of the workers/students and on the experiences and the vision of those who implement the educational programs. Identifies the limits of the schooling process and the difficulties inherent in the present…

  20. Uma Comparação entre Técnicas de Propagação de Erros em Astrofísica: Monte Carlo x Bootstrap

    NASA Astrophysics Data System (ADS)

    Zabot, Alexandre; Baptista, Raymundo

    2005-07-01

    Neste trabalho é feito um estudo comparativo entre dois algoritmos numéricos usados para propagação de erros em dados experimentais. Um deles é conhecido por Método de Monte carlo e o outro por Método de Bootstrap. Recentemente, Dhullon & Watson argüiram que a aplicação do método de Monte Carlo introduz ruído nos dados, e propuseram então a utilização do Bootstrap como alternativa capaz de produzir resultados superiores. O objetivo deste trabalho é testar a validade dessa afirmação. As duas técnicas foram aplicadas a três problemas diferentes: o ajsute de modelos de emissão LTE simples e atmosfera estelar a espectros estelares observados e o ajuste de curvas de luz de eclipses de Variáveis Cataclísmicas para a detemrinação da distribuição radial de brilho dos seus discos de acréscimo. Os métodos foram testados quanto à sua robusteza, ou seja, a capacidade de prover resultados coerentes enre si. Além disso, as soluções dos métodos foram comparadas. Os resultados indicam que não existe evidência de superioridade de um métodos em relação ao outro.

  1. Decolourisation Capabilities of Ligninolytic Enzymes Produced by Marasmius cladophyllus UMAS MS8 on Remazol Brilliant Blue R and Other Azo Dyes.

    PubMed

    Sing, Ngieng Ngui; Husaini, Ahmad; Zulkharnain, Azham; Roslan, Hairul Azman

    2017-01-01

    Marasmius cladophyllus was examined for its ability to degradatively decolourise the recalcitrant dye Remazol Brilliant Blue R (RBBR) and screened for the production of ligninolytic enzymes using specific substrates. Monitoring dye decolourisation by the decrease in absorbance ratio of A592/A500 shows that the decolourisation of RBBR dye was associated with the dye degradation. Marasmius cladophyllus produces laccase and lignin peroxidase in glucose minimal liquid medium containing RBBR. Both enzyme activities were increased, with laccase activity recorded 70 times higher reaching up to 390 U L(-1) on day 12. Further in vitro RBBR dye decolourisation using the culture medium shows that laccase activity was correlated with the dye decolourisation. Fresh RBBR dye continuously supplemented into the decolourised culture medium was further decolourised much faster in the subsequent round of the RBBR dye decolourisation. In vitro dye decolourisation using the crude laccase not only decolourised 76% of RBBR dye in just 19 hours but also decolourised 54% of Orange G and 33% of Congo red at the same period of time without the use of any exogenous mediator. This rapid dye decolourisation ability of the enzymes produced by M. cladophyllus thus suggested its possible application in the bioremediation of dye containing wastewater.

  2. O Brincar como uma Acao Mediadora no Trabalho Desenvolvido com Criancas Hospitalizadas (Play as a Mediating Activity in Work Developed with Hospitalized Children).

    ERIC Educational Resources Information Center

    Goulart, Aurea Maria Paes Leme; de Moraes, Silvia Pereira Gonzaga

    2000-01-01

    Describes experiences with hospitalized children through the extension project "Writing and Reading at the University Hospital", State University of Maringa Hospital (Brazil). States the initial project proposal provided educational assistance to the children separated from school due to being in the hospital. Used play and games as an…

  3. Elemente der beiden W-UMa-Sterne GSC 0424-0792 (Brh V62) und GSC 1721-1591 (Brh V127)

    NASA Astrophysics Data System (ADS)

    Bernhard, Klaus; Frank, Peter; Moschner, Wolfgang

    2011-01-01

    CCD observations and ASAS-3 data of GSC 0424-0792 (Brh V62) and GSC 1721-1591 (Brh V127) lead to the following elements and types of variability: GSC 0424-0792: HJD (MinI)= 2453142.489(5)+ E*1.182336(1), type: WUMa GSC 1721-1591: HJD (MinI)= 2455429.5086(4)+E*0.3188963(1), type: WUMa

  4. A murine model of elastase- and cigarette smoke-induced emphysema.

    PubMed

    Rodrigues, Rubia; Olivo, Clarice Rosa; Lourenço, Juliana Dias; Riane, Alyne; Cervilha, Daniela Aparecida de Brito; Ito, Juliana Tiyaki; Martins, Milton de Arruda; Lopes, Fernanda Degobbi Tenório Quirino Dos Santos

    2017-01-01

    To describe a murine model of emphysema induced by a combination of exposure to cigarette smoke (CS) and instillation of porcine pancreatic elastase (PPE). A total of 38 C57BL/6 mice were randomly divided into four groups: control (one intranasal instillation of 0.9% saline solution); PPE (two intranasal instillations of PPE); CS (CS exposure for 60 days); and CS + PPE (two intranasal instillations of PPE + CS exposure for 60 days). At the end of the experimental protocol, all animals were anesthetized and tracheostomized for calculation of respiratory mechanics parameters. Subsequently, all animals were euthanized and their lungs were removed for measurement of the mean linear intercept (Lm) and determination of the numbers of cells that were immunoreactive to macrophage (MAC)-2 antigen, matrix metalloproteinase (MMP)-12, and glycosylated 91-kDa glycoprotein (gp91phox) in the distal lung parenchyma and peribronchial region. Although there were no differences among the four groups regarding the respiratory mechanics parameters assessed, there was an increase in the Lm in the CS + PPE group. The numbers of MAC-2-positive cells in the peribronchial region and distal lung parenchyma were higher in the CS + PPE group than in the other groups, as were the numbers of cells that were positive for MMP-12 and gp91phox, although only in the distal lung parenchyma. Our model of emphysema induced by a combination of PPE instillation and CS exposure results in a significant degree of parenchymal destruction in a shorter time frame than that employed in other models of CS-induced emphysema, reinforcing the importance of protease-antiprotease imbalance and oxidant-antioxidant imbalance in the pathogenesis of emphysema. Descrever um modelo murino de enfisema induzido por exposição a fumaça de cigarro (FC) e instilação de elastase pancreática porcina (EPP). Trinta e oito camundongos C57BL/6 foram aleatoriamente divididos em quatro grupos: controle (uma instilação intranasal

  5. [Brucellar spondylodiscitis: case series of the last 25 years].

    PubMed

    Lebre, Ana; Velez, Jorge; Seixas, Diana; Rabadão, Eduardo; Oliveira, Joaquim; Saraiva da Cunha, J; Silvestre, A Meliço

    2014-01-01

    Introdução: A brucelose é uma zoonose endémica em Portugal, sendo a espondilodiscite brucélica uma das manifestações focaismais frequentes. Pode provocar sequelas graves, apesar da terapêutica dirigida.Material e Métodos: Estudo retrospectivo dos processos dos doentes com espondilodiscite brucélica, internados no Serviço de Doenças Infecciosas do Centro Hospitalar e Universitário de Coimbra, num período de 25 anos (1988-2012).Resultados: Foram identificados 54 doentes, 55,6% do sexo masculino, com idade média de 54,8 anos. Em 81,5% identificou-se contexto epidemiológico, maioritariamente contacto com gado ovino e caprino. A duração da sintomatologia prévia ao diagnóstico foi de 5,5 meses. Os sinais e sintomas mais frequentes foram: dor (98,1%), febre (46,3%) e défices neurológicos (25,9%). A ressonância magnética nuclear da coluna foi o exame imagiológico mais usado (77,8%) evidenciando abcessos em 29,6% dos doentes. A localizaçãolombar predominou (77,7%). O diagnóstico etiológico foi confirmado em 47 doentes (87,0%): microbiologicamente (3 doentes), serologicamente (32 doentes) ou por ambos (12 doentes). As associações de doxiciclina com rifampicina (64,8%), ou estreptomicina (24,1%) foram as mais utilizadas, com duração média de 4,4 meses de tratamento. Um doente teve indicação cirúrgica para drenar abcesso. A evolução foi maioritariamente favorável (92,6%), sem óbitos.Discussão: A investigação de contexto epidemiológico revelou ser uma peça importante na suspeita do diagnóstico. O tratamento da brucelose osteoarticular ainda é controverso.Conclusões: A espondilodiscite brucélica deve ser considerada no diagnóstico diferencial dos doentes com lombalgia, mesmo naausência de febre, particularmente em regiões onde a doença é endémica. O esquema antibiótico, sua duração e a necessidade de cirurgia deverão ser individualizados, com vista a um melhor prognóstico. O número de casos tem diminuído ao longo dos

  6. [Tuberculous ulcer of the tongue: clinical case].

    PubMed

    Ladron de Guevara, R

    1989-12-01

    A 26 year-old female was seeking treatment for a painless ulcerated lesion of the tongue developing 30 days before. No history of a sef biting in that area was told by the patient. Following a provisional diagnosis of tuberculous ulcer or a neoplasm, under local anesthesia, a segment of the lesion was excised and sent to histological diagnosis, which confirmed the existence of a tuberculous ulcer. Additionally, a chest roentgenogram disclosed the presence of an undiagnosed pulmonar tuberculous lesion. The patient underwent a successful treatment with rifampicin, isoniazide and pirazinamide, and two month after the initial diagnosis the oral lesion was almost absent, although the pulmonar lesion was still detected on the roentgenogram. Finally, a total disappearance of the pulmonar lesion was detected six month following drug treatment.

  7. EARLY POSTOPERATIVE COMPLICATIONS IN ROUX-EN-Y GASTRIC BYPASS.

    PubMed

    Stoll, Aluisio; Rosin, Leandro; Dias, Mariana Fernandes; Marquiotti, Bruna; Gugelmin, Giovana; Stoll, Gabriela Fanezzi

    Roux-en-Y gastric bypass is one of the most common bariatric surgery and leads to considerable weight loss in the first months. To quantify the main early postoperative complications in patients submitted to the gastric bypass. Observational retrospective cohort. Data of 1051 patients with class II obesity associated with comorbidities or class III obesity submitted to the gastric bypass with 30 days of follow-up starting from the date of the surgery. The age average was 36 years with a predominance of females (81.1%). The mean preoperative body mass index was 43 kg/m². The major complication was fistula (2.3%), followed by intestinal obstruction (0.5%) and pulmonary embolism (0.5%). Death occurred in 0.6% of the cases. In the period of 30 days after surgery the overall complication rate was 3.8%; reoperation was necessary in 2.6% and death occurred in 0.6%. Fistula was the main complication and the leading cause of hospitalization in intensive care unit, reoperation and death. Bypass gástrico em Y-de-Roux é uma das operações bariátricas mais comuns e leva a perdas consideráveis de peso já nos primeiros meses. Quantificar as principais complicações pós-operatórias precoces em pacientes submetidos ao bypass gástrico. Coorte retrospectiva observacional. Amostra de 1051 pacientes portadores de obesidade grau II associada à comorbidades ou grau III submetidos ao bypass gástrico com acompanhamento de 30 dias a partir da data da operação. A idade média dos pacientes foi de 36 anos com predominância de mulheres (81,1%). O índice de massa corporal pré-operatório médio foi de 43 kg/m². A principal complicação foi fístula (2,3%), seguida de obstrução intestinal (0,5%) e tromboembolismo pulmonar (0,5%). Óbito ocorreu em 0,6% dos casos. No período de 30 dias de pós-operatório a taxa geral de complicações foi de 3,8%; a de reoperação de 2,6% e óbito em 0,6%. A fístula foi a principal complicação e a principal causa de internamento em

  8. Application of botulinum toxin to treat sialorrhea in amyotrophic lateral sclerosis patients: a literature review.

    PubMed

    Oliveira, Ademar Francisco de; Silva, Gêssyca Adryene de Menezes; Almeida, Débora Milenna Xavier

    2016-01-01

    Amyotrophic lateral sclerosis is a progressive and fatal neurodegenerative disease characterized by the degeneration of motor neurons, which are the central nervous system cells that control voluntary muscle movements. The excessive salivation (sialorrhea) is present in approximately 50% of amyotrophic lateral sclerosis cases. Thus, some alternative therapeutic methods are sought, such as anticholinergic drugs and surgery. Recently the use of botulinum toxin applied at a midpoint of the salivary glands, often guided by ultrasound, have demonstrated positive results. The objective was to review the literature to demonstrate an alternative method to treatments of sialorrhea in patients with amyotrophic lateral sclerosis. In recent studies, the efficacy of botulinum toxin is confirmed, although new applications are required. Since the side effects are negligible, this is an alternative to treat amyotrophic lateral sclerosis, and other patients with diseases that present sialorrhea. RESUMO Esclerose lateral amiotrófica é uma doença neurodegenerativa progressiva e fatal, caracterizada pela degeneração dos neurônios motores, as células do sistema nervoso central que controlam os movimentos voluntários dos músculos. A salivação excessiva (sialorreia) está presente em cerca de 50% dos casos de esclerose lateral amiotrófica. Dessa forma, surgem medidas terapêuticas alternativas como drogas anticolinérgicas e cirurgia, e recentemente, o uso da toxina botulínica, aplicada em um ponto central das glândulas salivares, muitas vezes guiado por ultrassonografia, demostrou resultados positivos. Objetivou-se revisar a literatura no intuito de demonstrar um método alternativo aos tratamentos de sialorreia em pacientes com esclerose lateral amiotrófica. Em estudos recentes, a eficácia do tratamento com toxina botulínica foi confirmada e, mesmo requerendo novas aplicações, os efeitos colaterais são ínfimos. Ela surge então como alternativa não só ao

  9. [Patient satisfaction with anesthesia care in a general hospital].

    PubMed

    Moura, Ana Catarina; Ferreira, Maria Amélia; Barbosa, Joselina; Mourão, Joana

    2014-01-01

    Introdução: O nível de satisfação com os cuidados de saúde reflete a qualidade dos cuidados prestados segundo a perspetiva do doente. O objetivo do estudo é avaliar a satisfação dos doentes com os cuidados anestésicos num hospital central português através da aplicação do questionário “Heidelberg Peri-anaesthetic Questionnaire”.Material e Métodos: O questionário foi traduzido e testado segundo critérios de qualidade psicométrica numa amostra de 107 doentes submetidos a cirurgia eletiva com internamento no Hospital de São João. A satisfação total e para cada dimensão foram calculadas. Analisámos as diferenças entre doentes com diferentes níveis de satisfação, identificando potenciais fatores de confundimento.Resultados: A versão portuguesa do questionário é constituída por 32 itens distribuídos por três dimensões: ‘equipa’, ‘desconforto’ e ‘medo’. Os valores médios de satisfação para cada dimensão foram 83,4%; 66,8% e 65,9%, respetivamente. A consistência interna foi demonstrada através de valores alfa de Cronbach de 0,776 a 0,875 nas três dimensões. Os doentes de satisfeitos e insatisfeitos diferiram nas três dimensões, com uma diferença menor em ‘equipa’. Na análise multivariada encontrámos influência significativa do género na dimensão ‘desconforto’.Discussão: O questionário apresentou boas características psicométricas. A dimensão ‘equipa’ inclui três domínios do questionário original.Conclusões: A sua aplicação revelou elevados níveis de satisfação com a equipa profissional. A insatisfação é sobretudo um reflexo das dimensões ‘medo’ e ‘desconforto’, sendo este significativamente menor nos homens.

  10. Efficacy of bacterial cellulose membrane for the treatment of lower limbs chronic varicose ulcers: a randomized and controlled trial.

    PubMed

    Cavalcanti, Luciana Marins; Pinto, Flávia Cristina Morone; Oliveira, Glícia Maria DE; Lima, Salvador Vilar Correia; Aguiar, José Lamartine DE Andrade; Lins, Esdras Marques

    2017-01-01

    to evaluate the efficacy of Bacterial Cellulose (BC) membrane dressings in the treatment of lower limb venous ulcers. we carried out a prospective, randomized, controlled study of 25 patients with chronic venous ulcer disease in the lower limbs from the Angiology and Vascular Surgery Service of the Federal University of Pernambuco Hospital and from the Salgado Polyclinic of the County Health Department, Caruaru, Pernambuco. We randomly assigned patients to two groups: control group, receiving dressings with triglyceride oil (11 patients) and experimental group, treated with BC membrane (14 patients). We followed the patients for a period of 120 days. There was a reduction in the wound area in both groups. There were no infections or reactions to the product in any of the groups. Patients in the BC group showed decreased pain and earlier discontinuation of analgesic use. BC membrane can be used as a dressing for the treatment of varicose ulcers of the lower limbs. avaliar a eficácia de curativos com membrana de Celulose Bacteriana (CB) no tratamento de úlceras venosas de membros inferiores. estudo prospectivo, randomizado e controlado de 25 pacientes com úlceras decorrentes de doença venosa crônica nos membros inferiores provenientes do Serviço de Angiologia e Cirurgia Vascular do Hospital de Clínicas da Universidade Federal de Pernambuco e da Policlínica do Salgado da Secretaria Municipal de Saúde, Caruaru, Pernambuco. Os pacientes foram distribuídos aleatoriamente em dois grupos: grupo controle, que recebeu curativos com óleo de triglicerídeos (11 pacientes) e grupo experimental, tratado com membrana de CB (14 pacientes). Os pacientes foram acompanhados por um período de 120 dias. houve uma redução na área de ferida em ambos os grupos. Não houve infecção ou reações ao produto em nenhum dos grupos. Pacientes do grupo CB mostraram diminuição da dor e interrupção mais precoce do uso de analgésicos. a membrana de CB pode ser usada como

  11. Duodenum inclusion in alimentary transit for preventing or correcting nutritional deficiencies resulting from Roux-en-y gastric bypass in obesity treatment.

    PubMed

    Ceneviva, Reginaldo

    2016-01-01

    Nutritional and metabolic complications can develop after Roux-en-Y gastric bypass (RYGB) when there is an exaggerated response to the anatomical and functional changes or when there is inadequate nutritional supplementation. Severe malnutrition is rare, but deficiencies of vitamin B12, iron, calcium and thiamin, metabolic bone disease and gallstones are common after RYGB. Shortage of vitamin B12, iron, calcium and also cholelithiasis are caused at least partially by excluding the duodenum and proximal jejunum from food transit. We designed a new procedure, with the maintenance of the duodenum and proximal jejunum in the gastrointestinal transit through interposition of jejunal loop, as a primary operation to prevent such deficiencies or as corrective surgery for severe malnutrition after RYGB with failure in responding to conservative treatment. Complicações nutricionais e metabólicas podem se desenvolver após a derivação gástrica em Y de Roux (DGYR) quando há uma resposta exagerada às mudanças anatômicas e funcionais ou quando há suplementação nutricional inadequada. A desnutrição grave é rara, mas deficiências de vitamina B12, ferro, cálcio e tiamina, doença óssea metabólica e cálculos biliares são comuns após a DGYR. Dessas deficiências mencionadas, a de vitamina B12, de ferro, de cálcio e também a colelitíase, são causadas, ao menos parcialmente, pela exclusão do duodeno e jejuno proximal. Um novo procedimento com a manutenção do duodeno e do jejuno proximal no trânsito gastrointestinal, mediante interposição de alça jejunal, foi idealizado como operação primária para prevenir essas deficiências ou como cirurgia corretiva de desnutrição grave após DGYR com falha na resposta a exaustivas tentativas de tratamento conservador.

  12. [Portuguese Consensus on the Diagnosis, Prevention and Treatment of Anaemia in Inflammatory Bowel Disease].

    PubMed

    Magro, Fernando; Ramos, Jaime; Correia, Luís; Lago, Paula; Peixe, Paula; Gonçalves, Ana Rita; Rodrigues, Ãngela; Vieira, Catarina; Ferreira, Daniela; Pereira Silva, João; Túlio, Maria Ana; Salgueiro, Paulo; Fernandes, Samuel

    2016-02-01

    Introdução: A anemia pode ser considerada a manifestação extra-intestinal mais comum na doença inflamatória intestinal. Ainda assim, a anemia é subdiagnosticada e subtratada tanto em adultos como em crianças com doença inflamatória intestinal. Assim, apresentamos o consenso alcançado pelo Grupo de Estudo da Doença Inflamatória Intestinal - GEDII relativamente à gestão da anemia na doença inflamatória intestinal, com o objetivo de facilitar o acompanhamento clínico dos doentes com doença inflamatória intestinal. Material e Métodos: Foi conduzida uma revisão exaustiva da literatura, por forma a preparar statements de consenso nos seguintes tópicos: (1) prevalência e diagnóstico de anemia na doença inflamatória intestinal, (2) ferro da prevenção da anemia na doença inflamatória intestinal e (3) tratamento da anemia na doença inflamatória intestinal. Os statements finais para cada tópico foram discutidos na reunião de consenso e classificados de acordo com os níveis de evidência definidos em 2011 pelo Oxford Centre for Evidence-Based Medicine. Consensos: Concluiu-se que a anemia tem elevada incidência e prevalência na doença inflamatória intestinal, particularmente entre pacientes com doença ativa e hospitalizados. Indicações absolutas para terapia intravenosa devem ser consideradas quando existe: (1) anemia moderada a severa (hemoglobina < 10,5 g/dL) ou anemia claramente sintomática; (2) intoler'ncia prévia à terapêutica com ferro por via oral; (3) resposta inadequada à terapêutica com ferro por via oral; (4) doença intestinal ativa severa; (5) necessidade de resposta terapêutica rápida (e.g. cirurgia a curto prazo); (6) terapêutica concomitante com agente estimulante da eritropoiese; e (7) preferência do paciente.

  13. SIMPLIFIED LAPAROSCOPIC GASTRIC BYPASS WITH GASTROJEJUNAL LINEAR MECHANICAL ANASTOMOSIS: TECHNICAL ASPECTS.

    PubMed

    Palermo, Mariano; Serra, Edgardo

    Gastric bypass is a restrictive and malabsorptive surgery. The restrictive part consists in the creation of a small gastric pouch. The gastrointestinal bypass serves as the malabsorptive element. To describe a simplified gastric bypass approach for morbid obese patients, showing our results, and also remarking the importance of this technique for reducing the learning curve. The patient is positioned in a split legs position and carefully strapped to the operating room table, with the surgeon between the patient's legs. Five trocars are inserted after pneumoperitoneum at the umbilicus. Dissection of the esophagogastric angle and lesser curvature is mandatory before the gastric pouch manufacturing. This pouch is done with two blue load staplers. Using a blue load linear stapler inserted only half way into the hole in the pouch is used to perform the gastrojejunal anastomosis and in order to create an anastomosis that is about 2 cm in length. A side-to-side jejunojejunostomy is done with a white load linear stapler. The last step of the gastric bypass consists in the cut of the jejunum between the two anastomosis with a white load linear stapler. Blue test is performed in order to detect leaks. From January 2012 to December 2015, 415 simplified RYGB were performed. Gender: 67% female and 33 % males. Average of BMI 44.7. Mean age was 42 years old. Mean operative time 79 min. 39 % of this sample had T2 diabetes. Regarding complications were observed, one fistula, one gastrojejunal stenosis and one obstruction due to a bezoar. The described technique is a simplified approach in which all the anastomosis are performed in the upper part of the abdomen, allowing the surgeons to be more systematized and avoiding them to make mistakes in the confection of the Roux-en-Y anastomosis. This simplified gastric bypass is a safe and reproducible technique. Bypass gástrico é cirurgia restritiva e malabsortiva. A parte restritiva consiste na criação de uma pequena bolsa g

  14. [Physical activity and respiratory function: corporal composition and spirometric values analysis].

    PubMed

    Paulo, Rui; Petrica, João; Martins, Júlio

    2013-01-01

    Objetivo: A presente investigação tem como principal objetivo verificar os efeitos da atividade física na composição corporal (índice de massa corporal e perímetro da cintura), nos valores espirométricos e relacionar esses indicadores com a função respiratória.Material e Métodos: A amostra, constituída por 86 indivíduos, alunos do ensino superior, com média de idade de 21,3 ± 2,4 anos, foi dividida em dois grupos: grupo de controlo constituído por 28 sujeitos sedentários (20,9 ± 1,3 anos), e grupo experimental constituído por 58 sujeitos (21,5 ± 2,8 anos) praticantes de exercício supervisionado. Para caraterizar a amostra quanto ao tipo de atividade física,aplicámos uma adaptação do questionário de Telama et al. Avaliaram-se os valores de espirometria (DEMI, VEF1 e CVF) com o espirómetro Microquark da Cosmed e os valores de índice de massa corporal e perímetro da cintura. Os dados obtidos foram tratados no S.P.S.S. 19.0, através do t-test, do teste de Levene, do teste Mann-Whitney e do teste de correlação de Spearman, adotando-se um nível de significância de 5%.Resultados: O grupo experimental obteve resultados significativamente melhores (p ≤ 0,05) nos valores de índice de massa corporal, do perímetro da cintura e em todos os valores avaliados pela espirometria (DEMI, VEF1 e CVF), comparativamente ao grupo de controlo. Verificámos também que há uma tendência para correlação negativa entre os valores da composição corporal e os valores espirométricos, apenas observável em algumas variáveis (DEMI, VEF1), ou seja, quanto maiores os valores da composição corporal, menores os valores espirométricos.Conclusão: Os alunos com prática de exercício supervisionado, apresentaram melhores índices de composição corporal e de função respiratória. Valores de índice de massa corporal e de perímetro da cintura desajustados poderão provocar disfunção respiratória, aonível da ventilação e respetivos volumes

  15. HEALTH AND ENVIRONMENTAL IMPACT OF NANOTECHNOLOGY: TOXICOLOGICAL ASSESSMENT OF MANUFACTURED NANOPARTICLES

    EPA Science Inventory

    The microtechnology of the second half of the 20th century has produced a technical revolution that has lead to the production of computers, the Internet and taken us into a new emerging era of nanotechnology. This issue of Toxicological Sciences includes two articles, "Pulmonar...

  16. [Lung eosinophilic syndrome: clinical presentation and cases report].

    PubMed

    Egea, N; Merlo, A; Esponda, L; Cazaux, A; Cambursano, V H; Cortés, J R

    2014-01-01

    Introducción: El síndrome de eosinofilia pulmonar se caracteriza por un grupo de patologías que presentan afección clínico – radiológica pulmonar con eosinofilia periférica o en parénquima pulmonar en su evolución. Materiales y métodos: Se describen las características de presentaciones clínico-radiológicas y evolutivas de pacientes atendidos entre 2007 y 2010 en Hospital Rawson. Resultados: Sobre 8 casos, se observó mayor número de casos en mujeres. Los signos y síntomas principales fueron tos, disnea, fiebre y sibilancias. Los hallazgos radiológicos más prevalentes fueron patrón alveolar y alveolointersticial. En la TAC el más frecuente fue el patrón en vidrio esmerilado. La eosinofilia periférica presentó valores entre 550 y 10.000 cel/mm3. Los pacientes fueron abdordados inicialmente como neumonía adquirida en la comunidad en el 62% de los casos. Los diagnósticos principales realizados fueron neumonía eosinofílica aguda y crónica, ambas con respuesta a esteroides. Conclusiones: El síndrome de eosinofilias pulmonares comparte características clínico-radiológicas comunes con entidades de mayor prevalencia, particularmente NAC.

  17. Load Carriage Induced Alterations of Pulmonary Function

    DTIC Science & Technology

    1989-01-01

    pulmonar , function reductions are directh’ related to the backpack load carried due to the mechanical constraint it imposes on the thoracic cage.2 To...and Fish- man. A.P.. 1965. The regulation of venttlation in diffuse Agostor. E.. D’Angelc, E. and Piolini, M., 1978. Breathing pulmonary fibrosis . J

  18. Modeling Approach for Oxygen Exchange in the Human Lung under Hypobaric Conditions

    DTIC Science & Technology

    2001-06-01

    diseases there is a diminished reserve of gas exchanging surface because of degeneration of alveoli and/or fibrosis of the lungs. For the individual...capillary difference of Pt in Pulmonar csalveolar PA,0 2 for the same venous PV,0 2 ý4 0 mmiHg at t=o sec. function Of time for three values of

  19. The Military Deployment Human Exposure Assessment Study (MDHEXAS): Blood and Urine Exposure Biomarkers as Environmental Surveillance Tools for Assessing Military Personnel Exposure to Chemicals During Deployment to Camp McGovern, Bosnia

    DTIC Science & Technology

    2003-01-01

    dysp = Dyspnea euph = euphoria excitement = excited fib = fibrosis flush face = flush face ftg = fatigue Head = Headache Gidd = giddiness inco...nausea Neck = neck ache nose = irritated nose Pallor Pulm edema= pulmonar y edema Resp sys = Respiratory System skin = irritated skin som = somnolence

  20. A TRIBUTE TO DR. WILLIAM PENN WATKINSON

    EPA Science Inventory

    Dr. William Penn Watkinson (known to colleagues as "Penn") of EPA¿s health research lab (National Health and Environmental Research Laboratory) of Research Triangle Park, North Carolina, died Wednesday, December 13 after a battle with lung cancer. He was a member of the Pulmonar...

  1. Randomized Trial of Efficacy of Crystalloid and Colloid Resuscitation on Hemodynamic Response and Lung Water Following Thermal Injury

    DTIC Science & Technology

    1983-05-01

    roentgenographic evidence of pulmonar % thermodilution techniques. However. by 48 hours post- edema, as did one patient in the crystalloid-treated burn, this...en similar to our patients. This group had low pulmonary artery hour. pressures and very moderate pulmonary hypertension , and this de- The correct

  2. HEALTH AND ENVIRONMENTAL IMPACT OF NANOTECHNOLOGY: TOXICOLOGICAL ASSESSMENT OF MANUFACTURED NANOPARTICLES

    EPA Science Inventory

    The microtechnology of the second half of the 20th century has produced a technical revolution that has lead to the production of computers, the Internet and taken us into a new emerging era of nanotechnology. This issue of Toxicological Sciences includes two articles, "Pulmonar...

  3. Music listening for anxiety relief in children in the preoperative period: a randomized clinical trial.

    PubMed

    Franzoi, Mariana André Honorato; Goulart, Cristina Bretas; Lara, Elizabete Oliveira; Martins, Gisele

    2016-12-19

    to investigate the effects of music listening, for 15 minutes, on the preoperative anxiety levels in children undergoing elective surgery in comparison with conventional pediatric surgical care. randomized controlled clinical trial pilot study with 52 children in the preoperative period, aged 3 to 12 years, undergoing elective surgery and randomly allocated in the experimental group (n = 26) and control group (n = 26). Anxiety was assessed in both groups by the application of the modified Yale Preoperative Anxiety Scale and measurement of the physiological variables, upon arrival and 15 minutes after the first measurement. there was a statistically significant difference in preoperative anxiety between the two groups only in relation to the physiological variable, since the respiratory rate of preschool children in the experimental group reduced in the second measurement compared to the control group (p = 0.0453). The experimental group showed a statistically significant reduction in anxiety levels after 15 minutes of music listening (p = 0.0441), specifically with regard to the behavioral domains of activity, vocalization, emotional expression and apparent awakening state. music listening emerges as a potential nursing intervention for relief of preoperative anxiety in children undergoing surgical procedures. RBR-7mcr59. investigar os efeitos da audição musical, por 15 minutos, nos níveis de ansiedade pré-operatória de crianças submetidas a cirurgias eletivas em comparação ao cuidado convencional de uma clínica cirúrgica pediátrica. estudo piloto do tipo ensaio clínico controlado randomizado realizado com 52 crianças no período pré-operatório, de 3 a 12 anos, submetidas a cirurgias eletivas e alocadas aleatoriamente para o grupo experimental (n = 26) e grupo controle (n = 26). A ansiedade foi avaliada em ambos os grupos, por meio da Escala de Ansiedade Pré-operatória de Yale modificada e pela mensuração das dimensões fisiológicas, na chegada

  4. Cultural adaptation and the Clavien-Dindo surgical complications classification translated to Brazilian Portuguese.

    PubMed

    Moreira, Luis Fernando; Pessôa, Marcelo Castro Marçal; Mattana, Diego Sachet; Schmitz, Fernando Fernandes; Volkweis, Bernardo Silveira; Antoniazzi, Jorge Luiz; Ribeiro, Liacyr

    2016-01-01

    to generate a translated and validated version of the Clavien-Dindo Classification of Surgical Complications (CDC) to Brazilian Portuguese (CDC-BR). the process of translation and adaptation followed the guideline of Beaton et al., 2000. We divided 76 participating surgeons, in different levels of experience, from the Department Surgery of the Hospital de Clínicas de Porto Alegre, into two groups: Group I applied the original version (CDC, n=36);r Group II used the modified version (CDC-BR, n=40). Each group classified 15 clinical cases of surgical complications. We compared performance between the groups (Mann-Whitney test) relating to the level of experience of the surgeon (Kruskal-Wallis test), considering p value <0.05 as significant. the performance of the Group II (CDC-BR) was higher, with 85% accuracy, compared with 79% of Group I (CDC), p-value =0.012. The performance of the groups as for surgeons experience displayed p=0.171 for Group I, p=0.528 for Group II, and p=0.135 for overall performance. we produced a translated and validated version of the CDC for Brazilian Portuguese. The instrument will be a useful tool in the production of evidence on surgical outcomes. gerar uma versão traduzida e validada da Classificação de Complicações Cirúrgicas de Clavien-Dindo (CCD) para o Português-Brasileiro (CCD-BR). o processo de tradução e adaptação seguiu a diretriz de Beaton et al., de 2000. Formaram-se dois grupos, Grupo I, que utilizou a versão original (CCD, n=36) testado em relação ao Grupo II, com a versão modificada (CCD-BR, n=40), com um total de 76 cirurgiões participantes em níveis de experiência distintos do Departamento de Cirurgia do Hospital de Clínicas de Porto Alegre. Quinze casos clínicos de complicações cirúrgicas foram classificados em cada grupo. Comparou-se o desempenho entre grupos (teste de Mann-Whitney) relacionando ao nível de experiência dos cirurgiões (teste de Kruskal-Wallis). Valor de p<0,05 como significativo

  5. [Hypofractionation in locally advanced breast cancer: "flash" scheme].

    PubMed

    Padilha, Marisa; Gonçalves, Sara; Fardilha, Carlos; Melo, Gilberto; Miranda, Cristina; Alves, Paula

    2013-01-01

    Introdução: O carcinoma da mama é uma das principais causas de morte no nosso país. No Serviço de Radioterapia do Instituto Português de Oncologia de Coimbra de Coimbra utilizamos, desde há mais de 30 anos, um esquema de hipofraccionamento de radioterapia, denominado “Flash”, como opção terapêutica em doentes idosos ou com baixo Performance Status, portadores de carcinoma da mama localmente avançado ou com estádios IIb ou IV, com intenção neoadjuvante ou paliativa. Objectivos: Avaliar a resposta ao tratamento, nomeadamente sobrevivência global aos três anos, resposta local e toxicidades aguda e crónica, no grupo de doentes seleccionados submetidos a esquema de hipofraccionamento, em estudo retrospectivo. Metodologia: Entre Janeiro de 2006 e Dezembro de 2008, um total de 83 doentes com diagnóstico de Carcinoma da Mama Localmente Avançado ou com estádios IIb ou IV, foi submetido a “Flash” mamário. A dose de radioterapia prescrita foi de 13Gy / 2Fr / 3 dias (em 23 doentes - 27,7%) e 26Gy / 4Fr / 2,5 semanas (em 60 doentes - 72,3%), com fotões de 4 MV, sobre a mama afectada. Foi avaliada sobrevivência global segundo o método de Kaplan-Meier. A análise estatística foi efectuada através da aplicação SPSS, versão 17.0 e os testes estatísticos foram avaliados ao nível de significância de 5%. Resultados: 80 doentes (96,4%) que efectuaram “Flash” mamário eram do género feminino, com idades compreendidas entre os 59 e os 93 anos (idade média 80,72 + 5,87 anos) e Performance Status (Karnosfsky: 0 - 100) entre 90 e 50%. Em 72 doentes (86,7%) o diagnóstico histológico foi Carcinoma Ductal Invasivo. A cirurgia após a realização do “Flash” Mamário foi realizada em 44 doentes (53%) após evidência de resposta local à radioterapia, sendo a Mastectomia Radical Modificada a técnica cirúrgica mais frequente. Efectuou-se o diagnóstico de metastização óssea em 10 doentes (12%), sendo que a taxa de sobrevivência global foi

  6. [Schwannoma of the Upper Extremity: Retrospective Analysis of 17 Cases].

    PubMed

    Sá, Ângelo; Nobre Azevedo, Leandro; Cunha, Luísa

    2016-09-01

    Introdução: O schwanoma ou neurilemoma é um tumor benigno dos nervos periféricos e apresenta-se habitualmente como uma lesão única de crescimento indolente, com origem na proliferação das células de Schwann. Representa uma pequena percentagem dos tumores benignos do membro superior, contudo é o mais frequente de origem neural. Apresentamos um estudo retrospectivo de schwanomas do membro superior para estabelecer a abordagem pré-operatória adequada, avaliar a eficácia do tratamento e observar a evolução pós-operatória. Material e Métodos: Revisão de 17 doentes tratados desde 2007 a 2014 com schwanoma do membro superior e caracterização quanto à idade, sexo, localização no membro superior, sinais e sintomas, exames pré-operatórios, diagnóstico histológico e vigilância pós-operatória.Resultados: Observou-se que em quatro dos doentes, o schwanoma se localizava no braço, três no antebraço, quatro no punho e seis na mão ou dedos. Procedeu-se a excisão com ampliação óptica para optimização do resultado funcional final. A enucleação foi realizada sem lesão fascicular em 12 doentes. Por sua vez, em cinco doentes efectuou-se a excisão dos fascículos envolvidos pela massa. No pós-operatório imediato as parestesias surgiram em nove doentes, regredindo em cinco daqueles no período pósoperatório de 12 meses. Um doente evidenciou défice motor do nervo radial, com recuperação parcial aos 12 meses. Discussão: Os schwanomas são tumores raros, de morfologia bem delimitada, que atingem esporadicamente o membro superior. O diagnóstico pré operatório é pouco frequente, pelo que normalmente apenas se estabelece o diagnóstico após a excisão e o estudo histopatológico.Conclusão: Os schwanomas deverão ser equacionados nas hipóteses de diagnóstico dos nódulos subcutâneos associados a sintomas neurológicos. Assim, é importante investigar a presença de parestesias e o sinal de Tinel, característicos desta

  7. Retrospective analysis of a case series of patients with traumatic injuries to the craniocervical junction.

    PubMed

    Esteves, Luiz Adriano; Joaquim, Andrei Fernandes; Tedeschi, Helder

    2016-01-01

    sexo masculino e a média de idade foi de 41,7 anos. Inicialmente 32% dos pacientes foram submetidos a tratamento cirúrgico, e 68% foram submetidos a tratamento conservador. Sete pacientes (29%) do grupo conservador foram submetidos posteriormente à cirurgia. No grupo cirúrgico, houve sete casos de fratura de odontóide tipo II, dois casos de fratura de elementos posteriores do áxis, um caso de luxação C1-C2, um caso de deslocamento occipito-cervical e um caso de fraturas de C1 e C2 e luxação facetária. Um paciente apresentava déficit neurológico, melhorando após o tratamento. Houve duas complicações pós-cirúrgicas, uma fístula liquórica e uma infecção de ferida operatória (reabordada). No grupo conservador, predominaram as fraturas do odontóide (oito) e dos elementos posteriores de C2 (cinco). Em dois casos, havia também fraturas em outros segmentos da coluna. Nenhum dos pacientes deste grupo apresentou deterioração neurológica. As lesões da junção craniocervical são raras, sendo mais frequentes as fraturas do odontóide e dos elementos posteriores do áxis. Nossos resultados recomendam o tratamento cirúrgico precoce para os pacientes com fraturas do odontóide tipo II e lesões ligamentares, e tratamento conservador para os demais pacientes.

  8. [Assessment of pulmonary complications in renal transplantation through the use of radiography].

    PubMed

    Ramírez-García, Laura Elena; Juárez-Hernández, Fortunato; Tanus-Hajj, Janet; Avelar-Garnica, Francisco José

    2016-01-01

    Introducción: las infecciones del tracto respiratorio inferior son la complicación más frecuente en pacientes trasplantados de riñón en los primeros seis meses y están asociadas a alta mortalidad. Otras complicaciones pulmonares incluyen edema, embolia y hemorragia pulmonar. Se buscó evaluar las complicaciones pulmonares en los pacientes trasplantados de riñón utilizando la radiografía de tórax. Métodos: se analizaron 516 radiografías de tórax de 150 pacientes que recibieron trasplante renal en el 2014. Las radiografías se tomaron en la valoración preoperatoria, postoperatoria dentro de las 48 horas posteriores, 3 a 7, 8 a 15, 16 a 30, 31 a 90, 91 a 180 y más de 180 días. Para el estudio del parénquima pulmonar se dividió el tórax en cuatro cuadrantes asignando un valor de 1 a cada patrón radiográfico que se encontrara: reticulonodular o de ocupación alveolar, lobar o segmentario, atelectasia y vidrio deslustrado; el parénquima pulmonar obtuvo un valor mínimo de 0 y un mayor de 16 puntos. También se evaluó género, edad, comorbilidad asociada y tipo de trasplante renal. Resultados: se obtuvo la información de un total de 150 pacientes; 19 presentaron complicaciones pulmonares en las primeras 24-48 horas y 15 entre los 90 y los 180 días posteriores al trasplante renal. Las complicaciones más frecuentes fueron edema agudo pulmonar en la etapa temprana e infecciones en la etapa tardía. Conclusión: la prevalencia de complicaciones diagnosticadas por radiografía de tórax fue baja y se observó más en la etapa temprana y tardía.

  9. Lung volumes and airway resistance in patients with a possible restrictive pattern on spirometry.

    PubMed

    Schultz, Kenia; D'Aquino, Luiz Carlos; Soares, Maria Raquel; Gimenez, Andrea; Pereira, Carlos Alberto de Castro

    2016-01-01

    prospectivo de adultos com CVF e VEF1 reduzidos e relação VEF1/CV(F) na faixa prevista. Distúrbio ventilatório restritivo (DVR) foi definido por CPT < 5º percentil por pletismografia. Distúrbio ventilatório obstrutivo (DVO) foi caracterizado por resistência específica de vias aéreas elevada, resposta significativa do VEF1 pós-broncodilatador e/ou um FEF25-75% < 50% do previsto associado a uma relação VR/CPT elevada. Distúrbio ventilatório inespecífico (DVI) foi caracterizado por CPT na faixa prevista e ausência de obstrução. Distúrbio ventilatório combinado (DVC) foi caracterizado por CPT reduzida e achados indicativos de obstrução ao fluxo aéreo. Os diagnósticos clínicos foram baseados em suspeita clínica, um questionário respiratório e revisão de exames de interesse. Foram incluídos 300 pacientes no estudo, dos quais 108 (36%) tiveram diagnóstico de DVR, enquanto 120 (40%) foram diagnosticados com DVO ou DVC e 72 (24%) com DVI. Destes últimos, 24 (33%) tinham diagnóstico clínico de DVO. Nesta amostra, 151 pacientes (50,3%) eram obesos, e isso se associou com todos os padrões de distúrbios funcionais. Medidas dos volumes pulmonares e da resistência das vias aéreas são frequentemente necessárias para a caracterização adequada do tipo de distúrbio funcional em casos com possível restrição à espirometria. A obstrução ao fluxo aéreo é comum nesses casos.

  10. NEW TECHNIQUE FOR OBESITY SURGERY: INTERNAL GASTRIC PLICATION TECHNIQUE USING INTRAGASTRIC SINGLE-PORT (IGS-IGP) IN EXPERIMENTAL MODEL.

    PubMed

    Müller, Verena; Fikatas, Panagiotis; Gül, Safak; Noesser, Maximilian; Fuehrer, Kirs Ten; Sauer, Igor; Pratschke, Johann; Zorron, Ricardo

    2017-01-01

    Bariatric surgery is currently the most effective method to ameliorate co-morbidities as consequence of morbidly obese patients with BMI over 35 kg/m2. Endoscopic techniques have been developed to treat patients with mild obesity and ameliorate comorbidities, but endoscopic skills are needed, beside the costs of the devices. To report a new technique for internal gastric plication using an intragastric single port device in an experimental swine model. Twenty experiments using fresh pig cadaver stomachs in a laparoscopic trainer were performed. The procedure was performed as follow in ten pigs: 1) volume measure; 2) insufflation of the stomach with CO2; 3) extroversion of the stomach through the simulator and installation of the single port device (Gelpoint Applied Mini) through a gastrotomy close to the pylorus; 4) performance of four intragastric handsewn 4-point sutures with Prolene 2-0, from the gastric fundus to the antrum; 5) after the performance, the residual volume was measured. Sleeve gastrectomy was also performed in further ten pigs and pre- and post-procedure gastric volume were measured. The internal gastric plication technique was performed successfully in the ten swine experiments. The mean procedure time was 27±4 min. It produced a reduction of gastric volume of a mean of 51%, and sleeve gastrectomy, a mean of 90% in this swine model. The internal gastric plication technique using an intragastric single port device required few skills to perform, had low operative time and achieved good reduction (51%) of gastric volume in an in vitro experimental model. A cirurgia bariátrica é atualmente o método mais efetivo para melhorar as co-morbidades decorrentes da obesidade mórbida com IMC acima de 35 kg/m2. Técnicas endoscópicas foram desenvolvidas para tratar pacientes com obesidade leve e melhorar as comorbidades, mas habilidades endoscópicas são necessárias, além dos custos. Relatar uma nova técnica para a plicatura gástrica interna

  11. SOCIAL INCLUSION AND SOLIDARITY IN STRICT POST-GRADUATION: EXPERIENCING THE LABORATORY "SCIENTIFIC WAKE FOR THE FUTURE" (PRIMARY AND SECONDARY EDUCATION).

    PubMed

    Noronha, Silvana Aparecida Alves Corrêa de; Bernardes, Linda; Noronha, Samuel Marcos Ribeiro de; Nascimento, Fernanda Amorim de Morais; Ferreira, Lydia Masako

    2015-01-01

    cannot turn them into great researchers thus contributing to the economic, social and intellectual growth of our country through scientific research. Estimular e despertar o interesse dos alunos do ensino médio ou fundamental de escolas públicas na pesquisa e na ciência por meio de estágios de Iniciação Científica Junior no Programa de Pós-Graduação em Cirurgia Translacional da Unifesp. O público alvo para o desenvolvimento das atividades científicas foram alunos regularmente matriculados em curso de nível médio (segundos anos inicialmente) e que tivessem aprovação de sua participação pela direção da escola e responsáveis legais. Quanto aos critérios de inclusão: proximidade física com a instituição de ensino superior, assinatura do termo de consentimento pelos responsáveis dos alunos, pela diretoria da unidade escolar e pelo pesquisador. Inicialmente, os alunos realizaram avaliação diagnóstica acerca dos conhecimentos prévios de biologia, ciências e pesquisa científica. A partir daí as aulas eram elaboradas com base no resultado deste teste, para então iniciar as atividades de Iniciação Científica Junior. A escola escolhida para esta fase inicial do projeto piloto foi a Escola Estadual Rui Bloem que possui 13 salas de aula para o segundo ano do ensino médio com total de 390 alunos. Destes, 160 (41%) apresentaram-se interessados; porém, somente 16 (10%) foram elegíveis para iniciar o projeto piloto no Laboratório de Cirurgia Translacional da Unifesp. Estes alunos apresentaram rendimento médio de 50% na prova diagnóstica e deverão iniciar os próximos treinamentos no Laboratório de Biologia Celular e Molecular e também a frequentar as reuniões científicas. Nesta fase inicial houve interesse dos alunos do ensino médio e o projeto piloto apresentado estimulou e despertou interesse dos alunos de escola pública na pesquisa e na ciência. A escolha de uma escola pública foi para o acesso à universidade e proximidade. Al

  12. [Complications of pediatric renal transplantation].

    PubMed

    Gonçalves, Cristina; Sandes, Ana Rita; Azevedo, Sara; Stone, Rosário; Almeida, Margarida

    2013-01-01

    ,7%. No primeiro mês após transplantação renal as complicações maisfrequentes foram as infecções bacterianas que ocorreram em 15,4% dos doentes e as complicações associadas à cirurgia que ocorreram em 11,5%; entre 1º e 6º mês prevaleceram as infecções bacterianas (em 34,6%) e virais (em 17,9%) e a partir do sexto mês os factores de risco cardiovascular (hipertensão arterial em 85,9% e dislipidémia em 16,7%). Registou-se um óbito.Conclusões: As infecções mais frequentes foram as virais, nomeadamente a infecção citomegalovírus. A disfunção aguda do enxerto permanece uma complicação frequente. Com a evolução de novas estratégias diagnósticas, profilácticas e terapêuticas, assistiu-se a emergência de novas morbilidades, nomeadamente os factores de risco cardiovascular.

  13. Comparative evaluation of ventilatory function through pre and postoperative peak expiratory flow in patients submitted to elective upper abdominal surgery.

    PubMed

    Scheeren, Caio Fernando Cavanus; Gonçalves, José Júlio Saraiva

    2016-01-01

    ós operatório imediatos. dos 47 pacientes, 22 (46,8%) eram do sexo masculino, e 25 (53,20%) do sexo feminino. A média do PFE pré-operatório foi 412,1±91,7, e do pós-operatório de 331,0±87,8, indicando diferenças significantes entre as duas variáveis. O sexo masculino apresentou maiores valores de PFE do que o feminino, tanto no pré-cirúrgico quanto no pós-cirúrgico. Observou-se razoável correlação inversamente proporcional entre as variáveis idade e diminuição do PFE. Ambas as situações mostraram significância estatística (p<0,001). O grupo composto por fumantes apresentou menores valores de PFE tanto no pré como no pós-operatório. O grupo composto por portadores de co-morbidades (HAS e/ou DM) apresentou menores valores de PFE tanto no pré como no pós-operatório (p=0,005). Em ambos os grupos, o pós-operatório determinou uma diminuição significativa do PFE (p<0,001). O tipo de cirurgia realizada e o tipo de anestesia não mostraram diferenças significantes em relação ao PFE. as variáveis mais implicadas na diminuição da função ventilatória, avaliadas através da PFE, foram: idade avançada, tabagismo e presença de comorbidades.

  14. Inflammatory and immunological profiles in patients with COPD: relationship with FEV 1 reversibility.

    PubMed

    Queiroz, Cleriston Farias; Lemos, Antonio Carlos Moreira; Bastos, Maria de Lourdes Santana; Neves, Margarida Célia Lima Costa; Camelier, Aquiles Assunção; Carvalho, Natália Barbosa; Carvalho, Edgar Marcelino de

    2016-01-01

    To determine whether COPD severity correlates with sputum cell counts, atopy, and asthma. This was a cross-sectional study involving 37 patients with COPD and 22 healthy subjects with normal lung function (controls). Sputum cell counts were determined by microscopy after centrifugation of samples. Skin prick tests were performed, and serum cytokines were determined by ELISA. Patients were stratified by bronchodilator response: a non-reversible airflow limitation (nonRAL) group comprised 24 patients showing no significant post-bronchodilator change in FEV1; and a partially reversible airflow limitation (partialRAL) group comprised 13 patients showing FEV1 reversibility (post-bronchodilator FEV1 increase ≥ 12%). The proportion of eosinophils in sputum was higher in the partialRAL group than in the nonRAL group (p < 0.01), and there was an inverse correlation between the proportion of eosinophils and FEV1 (p < 0.05). However, none of the patients had a history of asthma and skin prick test results did not differ between the two groups. In the patient sputum samples, neutrophils predominated. Serum levels of TNF, IL-6, IL-8, and RANTES (CCL5) were higher in patients than in controls (p < 0.001) but did not differ between the two patient groups. COPD patients with partial FEV1 reversibility appear to have higher sputum eosinophil counts and greater airway hyperresponsiveness than do those with no FEV1 reversibility. However, we found that COPD severity did not correlate with atopy or with the cytokine profile. Determinar se a gravidade da DPOC se correlaciona com a contagem de células no escarro, atopia e asma. Estudo transversal com 37 pacientes com DPOC e 22 indivíduos saudáveis com função pulmonar normal (controles). As contagens de células no escarro foram determinadas por microscopia após a centrifugação das amostras. Foram realizados testes cutâneos de puntura, e as citocinas séricas foram determinadas por ELISA. Os pacientes foram estratificados pela

  15. The halo sign: HRCT findings in 85 patients.

    PubMed

    Alves, Giordano Rafael Tronco; Marchiori, Edson; Irion, Klaus; Nin, Carlos Schuler; Watte, Guilherme; Pasqualotto, Alessandro Comarú; Severo, Luiz Carlos; Hochhegger, Bruno

    2016-01-01

    The halo sign consists of an area of ground-glass opacity surrounding pulmonary lesions on chest CT scans. We compared immunocompetent and immunosuppressed patients in terms of halo sign features and sought to identify those of greatest diagnostic value. This was a retrospective study of CT scans performed at any of seven centers between January of 2011 and May of 2015. Patients were classified according to their immune status. Two thoracic radiologists reviewed the scans in order to determine the number of lesions, as well as their distribution, size, and contour, together with halo thickness and any other associated findings. Of the 85 patients evaluated, 53 were immunocompetent and 32 were immunosuppressed. Of the 53 immunocompetent patients, 34 (64%) were diagnosed with primary neoplasm. Of the 32 immunosuppressed patients, 25 (78%) were diagnosed with aspergillosis. Multiple and randomly distributed lesions were more common in the immunosuppressed patients than in the immunocompetent patients (p < 0.001 for both). Halo thickness was found to be greater in the immunosuppressed patients (p < 0.05). Etiologies of the halo sign differ markedly between immunocompetent and immunosuppressed patients. Although thicker halos are more likely to occur in patients with infectious diseases, the number and distribution of lesions should also be taken into account when evaluating patients presenting with the halo sign. O sinal do halo consiste em uma área de opacidade em vidro fosco ao redor de lesões pulmonares em imagens de TC de tórax. Pacientes imunocompetentes e imunodeprimidos foram comparados quanto a características do sinal do halo a fim de identificar as de maior valor diagnóstico. Estudo retrospectivo de tomografias realizadas em sete centros entre janeiro de 2011 e maio de 2015. Os pacientes foram classificados de acordo com seu estado imunológico. Dois radiologistas torácicos analisaram os exames a fim de determinar o número de lesões e sua distribui

  16. [Pulmonary age-chronological age relation as indicator of improvement and severity of patients with bronchial asthma].

    PubMed

    Castrejón-Vázquez, María Isabel; Galicia-Tapia, Jorge; Guido-Bayardo, Ricardo Leopoldo; Ortiz-Contreras, Felipe; Cícero-Sabido, Raúl; Vargas-Camaño, María Eugenia

    2014-01-01

    Antecedentes: la espirometría es una prueba clínica que se utiliza para evaluar la función pulmonar en asmáticos. La función pulmonar puede estar afectada por el género, tiempo de evolución clínica, edad pulmonar y edad cronológica. Objetivo: evaluar la relación edad pulmonar-edad cronológica (EP/EC) como indicador de gravedad en pacientes asmáticos. Material y método: estudio prospectivo en el que se evaluó la gravedad del asma mediante la clasificación GINA. La espirometría se realizó al inicio del estudio y a los días 46, 96 y 192, durante 10 meses de seguimiento. Se usaron la prueba t Student, ANOVA de dos vías, modelos de correlación y regresión múltiple y curvas ROC; un valor p<0.05 se consideró significativo. Resultados: se incluyeron 70 pacientes asmáticos (22 hombres y 48 mujeres); la media de la edad cronológica (EC) fue de 35 años, la media de la edad pulmonar (EP) fue de 48 años, con valor del indicador EP-EC=1.4 y la evolución clínica de la enfermedad fue de 13 años. El valor del indicador EP-EC=1 (intervalo de 0.5 a 0.9) se observó en pacientes asintomáticos. El indicador EP-EC mayor a 1 se relacionó con obstrucción de la vía aérea y el indicador EP-EC mayor a 2 se correlacionó con grado 3 de GINA. El análisis de la edad cronológica y pulmonar en las mujeres demostró diferencia de más de 10 años entre ambas edades (GINA grados 2 y 3); mientras que en los hombres se observaron (GINA grados 1, 2 y 3). El valor del indicador EP-EC menor o igual que 1 se consideró normal. Conclusiones: la relación edad pulmonar-edad cronológica puede usarse como indicador clínico de la gravedad y mejoría clínica de pacientes asmáticos, con buena correlación entre la función pulmonar y la edad cronológica.

  17. Comparative study of abdominal cavity temporary closure techniques for damage control.

    PubMed

    Ribeiro, Marcelo A F; Barros, Emily Alves; Carvalho, Sabrina Marques DE; Nascimento, Vinicius Pereira; Cruvinel, José; Fonseca, Alexandre Zanchenko

    2016-01-01

    The damage control surgery, with emphasis on laparostomy, usually results in shrinkage of the aponeurosis and loss of the ability to close the abdominal wall, leading to the formation of ventral incisional hernias. Currently, various techniques offer greater chances of closing the abdominal cavity with less tension. Thus, this study aims to evaluate three temporary closure techniques of the abdominal cavity: the Vacuum-Assisted Closure Therapy - VAC, the Bogotá Bag and the Vacuum-pack. We conducted a systematic review of the literature, selecting 28 articles published in the last 20 years. The techniques of the bag Bogotá and Vacuum-pack had the advantage of easy access to the material in most centers and low cost, contrary to VAC, which, besides presenting high cost, is not available in most hospitals. On the other hand, the VAC technique was more effective in reducing stress at the edges of lesions, removing stagnant fluids and waste, in addition to acting at the cellular level by increasing proliferation and cell division rates, and showed the highest rates of primary closure of the abdominal cavity. RESUMO A cirurgia de controle de danos, com ênfase em peritoneostomia, geralmente resulta em retração da aponeurose e perda da capacidade de fechar a parede abdominal, levando à formação de hérnias ventrais incisionais. Atualmente, várias técnicas oferecem maiores chances de fechamento da cavidade abdominal, com menor tensão. Deste modo, este estudo tem por objetivo avaliar três técnicas de fechamento temporário da cavidade abdominal: fechamento a vácuo (Vacuum-Assisted Closure Therapy - VAC), Bolsa de Bogotá e Vacuum-pack. Realizou-se uma revisão sistemática da literatura com seleção de 28 artigos publicados nos últimos 20 anos. As técnicas de Bolsa de Bogotá e Vacuum-pack tiveram como vantagem o acesso fácil ao material, na maioria dos centros, e baixo custo, ao contrário do que se observa na terapia a vácuo, VAC, que além de apresentar

  18. Sugammadex ED90 dose to reverse the rocuronium neuromuscular blockade in obese patients.

    PubMed

    Silva, Mauro Prado DA; Matsui, Christiano; Kim, Daniel Dongiou; Vieira, Joaquim Edson; Malheiros, Carlos Alberto; Mathias, Ligia Andrade Silva Telles

    2017-01-01

    to determine the ED90 (minimum effective dose in 90% of patients) of sugammadex for the reversal of rocuronium-induced moderate neuromuscular blockade (NMB) in patients with grade III obesity undergoing bariatric surgery. we conducted a prospective study with the biased coin up-and-down sequential design. We chosen the following doses: 2.0mg/Kg, 2.2mg/Kg, 2.4mg/Kg, 2.6mg/Kg, 2.8mg/Kg. The complete reversal of rocuronium-induced NMB considered a T4/T1 ratio ≥0.9 as measured by TOF. After induction of general anesthesia and calibration of the peripheral nerve stimulator and accelerometer, we injected rocuronium 0.6mg/kg. We administered propofol and remifentanil by continuous infusion, and intermittent boluses of rocuronium throughout the procedure. we evaluated 31 patients, of whom 26 had displayed successful reversal of the NMB with sugammadex, and failure in five. The mean time to complete moderate NMB reversal was 213 seconds (172-300, median 25-75%). The ED90 of sugammadex calculated by regression was 2.39mg/kg, with a 95% confidence interval of 2.27-2.46 mg/kg. the ED90 of sugammadex in patients with grade III obesity or higher was 2.39mg/kg. determinar a ED90 (dose mínima eficaz em 90% dos pacientes) de sugamadex para a reversão de bloqueio neuromuscular (BNM) moderado induzido pelo rocurônio em pacientes com obesidade grau III submetidos à cirurgia bariátrica. estudo prospectivo com o método de projeção sequencial para cima e para baixo da moeda enviesada. As seguintes doses foram escolhidas: 2,0mg/kg-1, 2,2mg/kg-1, 2,4mg/kg-1, 2,6mg/kg-1, 2,8mg/kg-1. A reversão completa de BNM induzido por rocurônio considerou uma relação T4/T1 ≥0,9 na medida do TOF. Após a indução da anestesia geral e calibração do estimulador de nervo periférico e acelerômetro, rocurônio 0,6mg/kg-1 foi injetado. Infusão contínua de propofol e remifentanil, e bolus intermitente de rocurônio foram injetados durante todo o procedimento. trinta e um pacientes foram

  19. PROPOSAL OF A REVISIONAL SURGERY TO TREAT SEVERE NUTRITIONAL DEFICIENCY POST-GASTRIC BYPASS.

    PubMed

    Sampaio-Neto, José; Branco-Filho, Alcides José; Nassif, Luis Sérgio; Nassif, André Thá; Masi, Flávia David João De; Gasperin, Graciany

    The gastric bypass has nutritional and electrolyte disturbances rate of approximately 17%. The most common deficits are protein malnutrition, ferric and zinc, in addition to the vitamin. Although rare, some malnutrition stages reach such severity that ends up being necessary hospitalization and sometimes revisional or reversal surgical procedures. To present a proposal of surgical revision for treatment of severe malnutrition after bariatric surgery. The procedure is to reconstitute the food transit through the duodenum and proximal jejunum, keeping the gastric bypass restrictive component. As an additional strategy, the gastric fundus resection is performed, aiming to intensify the suppression of the greline and avoiding excessive weight regain. After initial stabilization, nutritional and electrolytic support, the procedure was performed in two patients as definitive treatment of malnutrition status. Good results were observed at one year follow up. As improvement option and/or resolution of the nutritional alterations, surgical therapy is one of the alternatives. There is still no consensus on the surgical technique to be performed. This procedure is based on pathophysiological factors for the treatment of this condition, with good initial results, without significant clinical alterations. Longer follow-up will determine its effectiveness. O bypass gástrico consta com taxa de distúrbios nutricionais e eletrolíticos de aproximadamente 17%. Os déficits mais frequentes são a desnutrição proteica, férrica e de zinco, além das vitamínicas. Apesar de raros, alguns quadros de desnutrição atingem tal gravidade que acaba sendo indicada internação e, por vezes, procedimentos cirúrgicos revisionais ou de reversão. Apresentar proposta de cirurgia revisional para tratamento de desnutrição severa após bypass gástrico. O procedimento consiste em reconstituir o trânsito alimentar pelo duodeno e jejuno proximal, mantendo o componente restritivo do bypass g

  20. [Cardiovascular involvement in Behçet's disease. (author's transl)].

    PubMed

    Godeau, P; Wechsler, B; Maaouni, A; Fagard, M; Herreman, G

    1980-01-01

    35 cases of Behçet disease are presented including 16 vascular manifestations: 14 veinous thrombosis with 9 vena cava obstruction; 1 femoral aneurysm; 2 pulmonar arteries thrombosis; 3 pericarditis; 2 myocardial infarction. In all these cases corticosteroids and anti-coagulation therapy were instituted. With a follow-up from 5 to 36 months, only 5 relapsed in the five first months of therapy. The authors suggest systematic anticoagulation or anti-agregant therapy in Behçet disease.

  1. Telemedicine Based Ultrasound for Detecting Neonatal Heart Disease in Babies at Remote Military or Native American Health Care Facilities

    DTIC Science & Technology

    2005-03-01

    year. Dr. Wells used the SonoSite system he had in Fairbanks to correctly diagnose a truncus arteriosus type 2 abnormality . He described his findings by...Patent ductus arteriosus ,Pulmonary artery - pulmonary hypertension Anomalous Left coronary artery !. Anomalous pulmonary venous return - partial...septal defect - patent foramem ovale,Patent ductus arteriosus ,Pulmonary artery - pulmonarTy hypertension Anomalous left coronary artery Anomalous

  2. The Use of Centrifugal Flow Pumps in a Model of Experimental Right Heart Failure

    DTIC Science & Technology

    1988-12-01

    clinical situations such as right ventricular in- farction, pulmonary hypertension , and pulmonary embolism. O"" 147 E0ION OF I NOV 6S IS OBSOLETE SD C...study was to an- pulmonary hypertension , and pulmonary em- swer three questions: Can ischemic right bolism. - ventricular failure be induced...proximal 4 pulmonar . a rtc r., S3 AL B2 gation baseline values were reached for the 2 84 values outlined earlier. The pump was then turned off and the

  3. [Management of pulmonary stenosis in the correction of the tetralogy of Fallot].

    PubMed

    López Soriano, F; Pérez Molina, J; Attie, F

    1980-01-01

    Successful surgical correction of (la estenosis pulmonar en la tetralogía de Fallot), requires that the postoperative ratio between the (right ventricular pressure) and (left ventricular pressure) (PVD/PVI) be less than 0.70. By measuring the ring diameter and pulmonary branch on relation to the (superficie corporal) it is possible to predict the outcome of this ratio and therefore indicate whether or not it is necessary to increase (AP). This paper presents our experience with 24 patients subjected to total correction of (tetralogía de Fallot) from March of 1975 to the present using the above criteria. The average age was 7 years (ranging from 2 to 20). In all cases the (cresta supraventricular) was (resected). In 14 (58%) a (valvultomia pulmonar) was performed and in 9 patients (37) it was necessary to increase the ring and pulmonary branch of the pulmonary artery according to measurements taken. The post-operative relationship PVD/PVI was 0.2-0.3: 15%, 0.4-0.5: 60%, 0.6-0.7: 25% In no case was the ratio greater than 0.70. No significant difference was found between those cases requiring... (parche transanular) and those where such treatment was not necessary. Three patients (12%) died immediately following the operation. It is concluded that measurement of the diameter of the pulmonary ring in comparison to the (superficie corporal) is extremely useful in management during surgery of (estenosis pulmonar) in patients with (tetralogía de Fallot).

  4. An overview of recently published medical papers in Brazilian scientific journals

    PubMed Central

    Rocha e Silva, Mauricio; Gomes, Ariane

    2011-01-01

    A brief review intended as information to the readership of Clinics on papers recently published under various medical headings in Brazilian scientific journals recently indexed or about to be indexed in ISI-THOMSON Journal Citation Reports. Journals covered in this review are Acta Ortopédica Brasileira, Arquivos Brasileiros de Cardiologia, Jornal Brasileiro de Pneumologia, Revista Brasileira de Cirurgia Cardiovascular and Revista da Associação Médica Brasileira. PMID:22086531

  5. Applications for a hybrid operating room in thoracic surgery: from multidisciplinary procedures to --image-guided video-assisted thoracoscopic surgery.

    PubMed

    Terra, Ricardo Mingarini; Andrade, Juliano Ribeiro; Mariani, Alessandro Wasum; Garcia, Rodrigo Gobbo; Succi, Jose Ernesto; Soares, Andrey; Zimmer, Paulo Marcelo

    2016-01-01

    The concept of a hybrid operating room represents the union of a high-complexity surgical apparatus with state-of-the-art radiological tools (ultrasound, CT, fluoroscopy, or magnetic resonance imaging), in order to perform highly effective, minimally invasive procedures. Although the use of a hybrid operating room is well established in specialties such as neurosurgery and cardiovascular surgery, it has rarely been explored in thoracic surgery. Our objective was to discuss the possible applications of this technology in thoracic surgery, through the reporting of three cases. RESUMO O conceito de sala híbrida traduz a união de um aparato cirúrgico de alta complexidade com recursos radiológicos de última geração (ultrassom, TC, radioscopia e/ou ressonância magnética), visando a realização de procedimentos minimamente invasivos e altamente eficazes. Apesar de bem estabelecido em outras especialidades, como neurocirurgia e cirurgia cardiovascular, o uso da sala hibrida ainda é pouco explorado na cirurgia torácica. Nosso objetivo foi discutir as aplicações e as possibilidades abertas por essa tecnologia na cirurgia torácica através do relato de três casos.

  6. [Radiographic changes in children with primary immunodeficiency].

    PubMed

    González-Uribe, Víctor; Pietropaolo-Cienfuegos, Dino Roberto; Del Río-Navarro, Blanca Estela; Del Río-Chivardi, Jaime Mariano; Sienra-Monge, Juan José Luis

    2015-01-01

    Antecedentes: si bien se cuenta con información epidemiológica de las inmunodeficiencias primarias, la información disponible en México es escasa. Objetivos: dar información epidemiológica del retraso del diagnóstico de las inmunodeficiencias primarias y de su correlación con daño pulmonar crónico. Material y método: estudio retrospectivo, analítico, efectuado en pacientes de 0 a 18 años de edad con diagnóstico de inmunodeficiencias primarias durante 11 años en el Hospital Infantil de México Federico Gómez; las variables estudiadas fueron: edad al inicio de los síntomas, edad al diagnóstico, tiempo desde el inicio de los síntomas al diagnóstico, número de neumonías previas y estudios radiográficos con datos de daño pulmonar crónico. Resultados: se incluyeron 48 pacientes que cumplieron los criterios de inclusión; 33 tenían daño pulmonar al diagnóstico, el déficit de anticuerpos fue el grupo con mayor afectación. Al correlacionar la edad de inicio de los síntomas y la diferencia de tiempo del inicio de los síntomas al diagnóstico se obtuvo una fuerte correlación (p <0.001, Rho > 0.80). Se observó una correlación moderada entre la diferencia en tiempo vs número de neumonías (p=0.005, Rho=0.495) y la correlación entre número de neumonías y daño pulmonar mostró significación alta (p <0.001, Rho=0.704). Conclusión: se encontró una relación estrecha entre el tiempo transcurrido desde el inicio de los síntomas y el número de neumonías con el daño pulmonar, por lo que las neumonías de repetición (más de dos) deben hacer sospechar el diagnóstico de inmunodeficiencia primaria, como se recomienda en la bibliografía mundial.

  7. [Structural and functional heart diseases in adult patients with common variable immunodeficiency].

    PubMed

    Cambray-Gutiérrez, Julio César; Fernández-Muñoz, María Jesús; Del Rivero-Hernández, Leonel Gerardo; López-Pérez, Patricia; Chávez-García, Aurora Alejandra; Segura-Méndez, Nora Hilda

    2015-01-01

    Antecedentes: la inmunodeficiencia común variable es la inmunodeficiencia primaria con mayor cantidad de comorbilidades en la vida adulta. Se ha asociado con bronquiectasias en 17 a 76%, y éstas, con complicaciones cardiovasculares, como hipertensión arterial pulmonar e insuficiencia cardiaca. Los nuevos métodos diagnósticos de imagen permiten evaluar la conformación estructural y funcional cardiovascular de los pacientes adultos con bronquiectasias y, de esta manera, establecer diagnósticos más eficientes y oportunos. Objetivo: determinar las cardiopatías estructurales y funcionales en pacientes con inmunodeficiencia común variable mediante ecocardiografía transtorácica. Material y método: estudio transversal, descriptivo, efectuado en una cohorte de 26 pacientes adultos con diagnóstico de inmunodeficiencia común variable y tratamiento sustitutivo con inmunoglobulina intravenosa (IgIV), pertenecientes a la Clínica de Inmunodeficiencias. A todos los pacientes se les realizó ecocardiografía transtorácica con ecocardiograma doppler y tisular; los resultados fueron evaluados por un médico cardiólogo ecocardiografista. Resultados: evaluamos a 26 pacientes; de ellos, 10 fueron del género masculino, con media de edad de 35.7 ± 13.7 años. Los resultados de la ecocargiografia torácica en las cavidades cardiacas izquierdas reportaron las siguientes alteraciones funcionales: 17 de 26 pacientes tuvieron insuficiencia mitral y sólo 2 tuvieron insuficiencia aórtica; ninguno de ellos con síntomas. Respecto de las alteraciones estructurales de las cavidades derechas: 8 pacientes adultos con inmunodeficiencia común variable tuvieron crecimiento de las cavidades derechas y en 5 pacientes se encontró tabique interauricular delgado e hipermóvil; respecto de las alteraciones funcionales, 24 pacientes tuvieron insuficiencia tricuspídea, en 21 de ellos fue leve y sólo en 3 fue moderada. Además, 12 pacientes tuvieron insuficiencia de la válvula pulmonar

  8. Thromboembolism and bleeding risk scores and predictors of cardiac death in a population with atrial fibrillation.

    PubMed

    Silva, Rose Mary Ferreira Lisboa da; Silva, Pollyana Ardavicius E; Lima, Marcos Correia; Sant'Anna, Lívia Tanure; Silva, Túlio Corrêa; Moreira, Pedro Henrique Vilela; Gandra, Robert Moreira; Cavalcanti, Túlio Ramos; Mourão, Plínio Henrique Vaz

    2017-07-01

    Atrial fibrillation (AF) is a common arrhythmia, with risk of systemic embolism and death. It presents rheumatic etiology in up to 32% of developing countries, whose anticoagulation and evolution data are scarce. to determine the predictors of cardiac death considering the clinical profile, thromboembolism and bleeding scores of patients with AF of a single center, with high prevalence of rheumatic heart disease. 302 patients with AF were studied, mean age 58.1 years; 161 women; 96 pts with rheumatic etiology. Patients underwent clinical and laboratory evaluation, measurement of risk scores and the mean follow-up of 12.8 months. 174 were using warfarin. The averages of the HAS-BLED and ATRIA scores were 1.4 and 1.2, respectively. Percent time in therapeutic range of international normalized ratio was 45.8%. Thirty patients (9.9%) had cardiac death and 41 had some type of bleeding due to warfarin. By univariate analysis, there was statistical significance between cardiac death and permanent AF, blood pressure, systolic dysfunction, R2CHADS2, CCS, EHRA and HAS-BLED. There was no association with valvular AF. By multivariate analysis, systemic arterial and pulmonary artery pressures, classification CCS and systolic dysfunction showed statistical significance. There was no association between cardiac death and valvular AF. Independent predictors of cardiac death were low measures of blood pressure, higher score CCS classification and the presence of systolic ventricular dysfunction. A fibrilação atrial (FA) é uma arritmia comum, com risco de embolia sistêmica e morte. Apresenta etiologia reumática em até 32% dos países em desenvolvimento, cujos dados de anticoagulação e evolução são escassos. Verificar as variáveis preditoras de morte cardíaca (MC) conforme o perfil clínico, os escores de tromboembolismo e de sangramento dos pacientes com FA de uma única instituição universitária, com alta prevalência de cardiopatia reumática. Foram estudados 302

  9. SADI-S WITH RIGHT GASTRIC ARTERY LIGATION: TECHNICAL SYSTEMATIZATION AND EARLY RESULTS.

    PubMed

    Gebelli, Jordi Pujol; Gordejuela, Amador Garcia Ruiz de; Ramos, Almino Cardoso; Nora, Mario; Pereira, Ana Marta; Campos, Josemberg Marins; Ramos, Manoela Galvão; Bastos, Eduardo Lemos de Souza; Marchesini, João Batista

    Bariatric surgery is performed all over the world with close to 500.000 procedures per year. The most performed techniques are Roux-en-Y gastric bypass and sleeve gastrectomy. Despite this data, the most effective procedure, biliopancreatic diversion with or without duodenal switch, represents only no more than 1.5% of the procedures. Technical complexity, morbidity, mortality, and severe nutritional adverse effects related to the procedure are the main fears that prevent most universal acceptance. To explain the technical aspects and the benefits of the SADI-S with right gastric artery ligation as an effective simplification from the original duodenal switch. Were included all patients undergoing this procedure from the November 2014 to May 2016, describing and analysing aspects of this technique, the systematization and early complications associated with the procedure. A series of 67 patients were operated; 46 were women (68.7%); mean age of the group was 44 years old (33-56); and an average BMI of 53.5 kg/m2 (50-63.5). Surgical time was 115 min (80-180). A total of five patients (7.5%) had any complication and two (2.9%) had to be reoperated. There were two patients with leak, one at the duodenal stump and other at the esophagogastric angle. There was no mortality. Patients stayed at the hospital a median of 2.5 days (1-25). SADI-S with right gastric artery ligation is a safe procedure with few preliminary complications. The technical variations introduced to the classical duodenal switch are reproducible and may allow this procedure to be more popular. All the complications in this series were not related to the ligation of the right gastric artery. Cerca de 500.000 cirurgias bariátricas são realizadas a cada ano em todo o mundo. As técnicas mais realizadas são o bypass gástrico em Y-de-Roux e a gastrectomia vertical. A derivação biliopancreática, com ou sem duodenal switch, é considerada técnica mais eficaz no tratamento cirúrgico do paciente obeso

  10. [Carotid and brachial intima-media thickness of the allelic variants G894T and T-789C of eNOS in systemic sclerosis patients].

    PubMed

    Martínez-Godínez, Ángeles; Miliar-García, Ángel; Bautista-Jiménez, María Itandehui; Jandete-Rivera, Fernando; Vera-Lastra, Olga Lidia; Jara, Luis J; Bizueto-Rosas, Héctor; del Pilar Cruz-Domínguez, María

    2015-01-01

    Introducción: el objetivo de este estudio es evaluar comparativamente el grosor íntima-media (IMT) carotídeo y braquial con ultrasonido Doppler, la presión arterial pulmonar ecocardiográfica y la variación alélica de los genes G894T y T-789C de la eNOS en pacientes con esclerodermia. Métodos: estudio transversal en pacientes con esclerodermia. Criterios de inclusión: edad 18-70 años, diagnosticado con esclerodermia, previo consentimiento informado. Se evaluó IMT, índice de resistencia (IR) e índice de pulsatilidad (IP) mediante Doppler carotídeo y braquial, perfil de lípidos, proteína C reactiva, polimorfismo G894T y T-789C de óxido nítrico sin tasa endotelial (eNOS). Analizamos con estadística descriptiva, prueba t de Student o chi cuadrada para asociación de variables y Spearman para correlacionar las variables cuantitativas. Resultados: encontramos IMT anormalmente alto en arterias carotídeas y braquiales. Observamos baja correlación entre ambas braquiales, buena correlación entre carótidas y ninguna correlación entre carótidas y braquiales. El IMT braquial izquierdo > 0.65 corresponde con presión arteria pulmonar > 30 mmHg ecocardiográfica. El polimorfismo del gen G894T se asoció con mayor IMT en carótida derecha.Conclusión: El polimorfismo G894T de eNOS se asocia a mayor IMT en carótida derecha. El IMT carotídeo concuerda con su IMT contralateral. El IMT braquial izquierdo mayor a 0.65 sugiere la posibilidad de hipertensión arterial pulmonar.

  11. [Vitamin D and infectious diseases].

    PubMed

    Ghosn, Jade; Viard, Jean-Paul

    2013-10-01

    Vitamin D plays a role in the synthesis of antibacterial peptids and in autophagy. Several studies have shown that low levels of vitamin D are associated with the susceptibility and the severity of acute infections on one hand, and with an unfavorable outcome of some chronic infections (such as HIV infection). Vitamin D supplementation improves response to treatment of some viral (such as chronic hepatitis C infection) or bacterial infections (such as pulmonar tuberculosis). Vitamin D supplementation demonstrated no benefit in reducing the incidence of pulmonary infections. The target level of vitamin D to be reached after supplementation is not known yet.

  12. [Liver tuberculous abscess in patients with human immunodeficiency virus infection: report of 2 cases and review of the literature].

    PubMed

    Roig Rico, P; Pérez Rodríguez, L; Navarro Ibáñez, V; López Pérezagua, M M; Portilla Sogorb, J; Cuadrado Pastor, J M

    1995-02-01

    Two cases are reported of hepatic tuberculous abscesses (HTBA) in patients infected with the human immunodeficiency virus (HIV), stressing the rarity of this location. Likewise, a review is made of cases reported in the literature. Our two patients presented with a prolonged febrile condition, with constitutional symptoms and nonspecific abdominal discomfort. In one patient the hepatic location was accompanied by a pulmonar location too. The course of the patients was good and symptoms subsided with tuberculostatic therapy. To note the possibility of finding hepatic tuberculous abscesses in HIV patients with prolonged fever and nonspecific abdominal pain more frequently than considered until now.

  13. [Nonspecific interstitial pneumonitis: a clinicopathologic entity, histologic pattern or unclassified group of heterogeneous interstitial pneumonitis?].

    PubMed

    Morais, António; Moura, M Conceição Souto; Cruz, M Rosa; Gomes, Isabel

    2004-01-01

    Nonspecific interstitial pneumonitis (NSIP) initially described by Katzenstein and Fiorelli in 1994, seems to be a distinct clinicopathologic entity among idiopathic interstitial pneumonitis (IIP). Besides different histologic features from other IIP, NSIP is characterized by a better long-term outcome, associated with a better steroids responsiveness than idiopathic pulmonar fibrosis (IPF), where usually were included. Thus, differentiating NSIP from other IIP, namely IPF is very significant, since it has important therapeutic and prognostic implications. NSIP encloses different pathologies, namely those with inflammatory predominance (cellular subtype) or fibrous predominance (fibrosing subtype). NSIP is reviewed and discussed by the authors, after two clinical cases description.

  14. Mechanical Ventilation in Hypobaric Atmosphere - Aeromedical Transport of Critically Ill Patients

    DTIC Science & Technology

    2004-09-01

    RTO-MP-HFM-109 36 - 7 [15] Came X. Arnaiz J.A. Vallve C. Variables subrogadas en ensayos clínicos en el entorno de Cuidados Intensivos . En: El...ventilators. Prob Crit Care 1990; 4: 254-74. [24] Ginestal P. Controles durante la ventilación mecánica. En: Cuidados Intensivos . Ginestal P. ELA...Circulación Pulmonar en el Paciente Gran Quemado. En: Cuidados Intensivos del paciente quemado. Springer-Verlag Ibérica. Barcelona 1988. [40] Beaumont M

  15. [Corneal manifestations in systemic diseases].

    PubMed

    Zarranz Ventura, J; De Nova, E; Moreno-Montañés, J

    2008-01-01

    Systemic diseases affecting the cornea have a wide range of manifestations. The detailed study of all pathologies that cause corneal alteration is unapproachable, so we have centered our interest in the most prevalent or characteristic of them. In this paper we have divided these pathologies in sections to facilitate their study. Pulmonar and conective tissue (like colagen, rheumatologic and idiopathic inflamatory diseases), dermatologic, cardiovascular, hematologic, digestive and hepatopancreatic diseases with corneal alteration are described. Endocrine and metabolic diseases, malnutrition and carential states are also studied, as well as some otorhinolaryngologic and genetic diseases that affect the cornea. Finally, a brief report of ocular toxicity induced by drugs is referred.

  16. [Retroperitoneal germ cell tumor].

    PubMed

    Borrell Palanca, A; García Garzón, J; Villamón Fort, R; Domenech Pérez, C; Martínez Lorente, A; Gunthner, S; García Sisamón, F

    1999-03-01

    We report a case of retroperitoneal extragonadal germ-cell tumor in an 17 years old patient who presented with aedema and pain in left inferior extremity asociated with hemopthysis caused by pulmonar metastasis, who was treated with chemotherapy and resection of residual mass and pulmonary nodes. Dyagnosis was stableshed by fine neadle aspiration biopsy of the wass. We comment on the difficult of stableshing differential dyagnosis between retroperitoneal extragonadal germ-cell tumor and metastasis of a testicular tumor. Dyagnosis is stableshed by the finding of a histologically malignant germ-cell tumor with normal testis. We considered physical examination and ecographyc exploration enough for a correct dyagnosis.

  17. Endoscopic surveillance of extensive esophageal papillomatosis not amenable to endoscopic therapy.

    PubMed

    Ferrari, Angelo Paulo; Martins, Fernanda Prata

    2017-07-24

    We present two cases of esophageal papillomatosis, a very rare reported disease leading to dysphagia and did not improve after endoscopic treatment. Both patients refused surgery and they were followed-up for 3 years, but no significant clinical or endoscopic changes were seen. RESUMO Apresentamos dois casos de papilomatose esofágica, lesão raramente relatada, que pode levar à disfagia, e que não teve melhora após tratamento endoscópico. Ambos os pacientes recusaram cirurgia e foram acompanhados por até 3 anos, sem alterações clínicas ou endoscópicas importantes.

  18. Multiprofessional committee on auditory health: COMUSA.

    PubMed

    Lewis, Doris Ruthy; Marone, Silvio Antonio Monteiro; Mendes, Beatriz C A; Cruz, Oswaldo Laercio Mendonça; Nóbrega, Manoel de

    2010-01-01

    Created in 2007, COMUSA is a multiprofessional committee comprising speech therapy, otology, otorhinolaryngology and pediatrics with the aim of debating and countersigning auditory health actions for neonatal, lactating, preschool and school children, adolescents, adults and elderly persons. COMUSA includes representatives of the Brazilian Audiology Academy (Academia Brasileira de Audiologia or ABA), the Brazilian Otorhinolaryngology and Cervicofacial Surgery Association (Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico Facial or ABORL), the Brazilian Phonoaudiology Society (Sociedade Brasileira de Fonoaudiologia or SBFa), the Brazilian Otology Society (Sociedade Brasileira de Otologia or SBO), and the Brazilian Pediatrics Society (Sociedade Brasileira de Pediatria or SBP).

  19. Right hepatic artery aneurysm.

    PubMed

    Bernal, Astrid Del Pilar Ardila; Loures, Paulo; Calle, Juan Cristóbal Ospina; Cunha, Beatriz; Córdoba, Juan Camilo

    2016-01-01

    We report a case of an aneurysm of the right hepatic artery and its multidisciplinary management by general surgery, endoscopy and radiology services. Being a case of extremely low incidence, it is important to show its diagnostic and therapeutic approach. RESUMO Relatamos um caso de aneurisma da artéria hepática direita conduzido de forma multidisciplinar pelos Serviços de Cirurgia Geral, Endoscopia e Radiologia. Em se tratando de caso de incidência baixíssima, é importante mostrar o enfoque diagnóstico e terapêutico usado em seu manejo.

  20. Does the Attention Deficit Hyperactivity Disorder interfere with bariatric surgery results?

    PubMed

    Marchesi, Doglas Gobbi; Ciriaco, Jovana Gobbi Marchesi; Miguel, Gustavo Peixoto Soares; Batista, Gustavo Adolfo Pavan; Cabral, Camila Pereira; Fraga, Larissa Carvalho

    2017-01-01

    to analyze possible negative effects of Attention Deficit Hyperactivity Disorder (ADHD) on the success of bariatric surgery. we evaluated forty patients undergoing bariatric surgery and with regular post-operative follow-up of at least one year. To all, we applied the questionnaire advocated in the fourth edition of the Diagnostic and Statistical Manual (DSM-IV) of the American Psychiatric Association for ADHD, as well as analyzed their postoperative data. fifteen (38%) patients presented a positive questionnaire for ADHD. Patients with ADHD presented higher BMI than patients without the disorder (45.8 vs. 40.9 kg/m2, p=0.017), and the difference remained in all postoperative stages. There was no statistically significant difference in surgery success (33.3% x 66.7%, p=0.505) or in BMI reduction (30.71% x 31.88%, p=0.671) one year after the procedure. ADHD patients have a higher BMI. However, the presence of ADHD does not influence the success of bariatric surgery and the reduction of BMI. analisar possíveis efeitos negativos do Transtorno do Déficit de Atenção e Hiperatividade (TDAH) no sucesso da cirurgia bariátrica. foram avaliados 40 pacientes submetidos à cirurgia bariátrica e com acompanhamento pós-operatório regular mínimo de um ano. Todos foram submetidos ao questionário preconizado na quarta edição do Diagnostic and Statistical Manual (DSM-IV) da Associação Americana de Psiquiatria para TDAH e analisados os dados pós operatórios. : quinze (38%) pacientes apresentaram questionário positivo para TDAH. Os pacientes com TDAH apresentaram IMC maior do que os pacientes sem o transtorno (45,8x40,9 Kg/m2; p=0,017), mantendo-se a diferença em todas as etapas do pós-operatório. Não foi encontrada diferença estatisticamente significativa no sucesso da cirurgia (33,3% x 66,7%; p=0,505), e na redução do IMC (30,71% x 31,88%; p=0,671) após um ano do procedimento. : pacientes com TDAH apresentam maior IMC, entretanto, a presença do TDAH n

  1. O Passado como Nacao: Imagens do Imperio nas Falas Reacionarias dos Anos 30 e 40 do Seculo XX: Uma Pequena Arqueologia do Debate Publico e Privado (The Past as Nation: Images of the Empire in the Reactionary Words of the 30s and 40s in the 20th Century: A Small Archaeology of the Public Debate versus the Private One).

    ERIC Educational Resources Information Center

    de Freitas, Marcos Cezar

    1998-01-01

    Suggests an archaeology of the public debate versus the private one in Brazil through analysis of the reactionary speech of a religious leader, Dom Jose Mauricio da Rocha, which produced innumerable representations of the Brazilian Empire. (PA)

  2. O Passado como Nacao: Imagens do Imperio nas Falas Reacionarias dos Anos 30 e 40 do Seculo XX: Uma Pequena Arqueologia do Debate Publico e Privado (The Past as Nation: Images of the Empire in the Reactionary Words of the 30s and 40s in the 20th Century: A Small Archaeology of the Public Debate versus the Private One).

    ERIC Educational Resources Information Center

    de Freitas, Marcos Cezar

    1998-01-01

    Suggests an archaeology of the public debate versus the private one in Brazil through analysis of the reactionary speech of a religious leader, Dom Jose Mauricio da Rocha, which produced innumerable representations of the Brazilian Empire. (PA)

  3. Prevalência de infecção por Helicobacter pylori em uma comunidade indígena em São Paulo e fatores associados: estudo transversalPrevalence of Helicobacter pylori infection in an indigenous community in São Paulo and associated factors: cross-sectional study.

    PubMed

    Roque, Juliana Rejane da Silva; Machado, Rodrigo Strehl; Rodrigues, Douglas; Rech, Patrícia; Kawakami, Elisabete

    2017-01-01

    The prevalence of Helicobacter pylori infection is unevenly distributed among different populations. The aim here was to evaluate the factors associated with Helicobacter pylori infection among children up to five years of age living in a high-risk community. Cross-sectional study in an indigenous community of Guarani Mbya ethnicity, Tekoa Ytu and Tekoa Pyau villages, Jaraguá district, city of São Paulo (SP), Brazil. 74 children aged 0.4 to 4.9 years (mean 2.9 ± 1.3 years; median 3.1), and 145 family members (86 siblings, 43 mothers and 16 fathers) were evaluated for Helicobacter pylori infection using the validated 13C-urea breath test. Clinical and demographic data were collected. The prevalence was 8.3% among children aged 1-2 years and reached 64.3% among those aged 4-5 years (P = 0.018; overall 31.1%). The prevalence was 76.7% among siblings and 89.8% among parents. There was a negative association with previous use of antibiotics in multivariate analysis adjusted for age (odds ratio, OR: 0.07; 95% confidence interval, CI: 0.01 to 0.66; P = 0.02). The prevalence was higher among males (OR: 1.55), and was associated with maternal infection (OR: 1.81), infection of both parents (OR: 1.5), vomiting (OR: 1.28), intestinal parasitosis (OR: 2.25), previous hospitalization (OR: 0.69) and breastfeeding (OR: 1.87). The prevalence was high among subjects older than three years of age, thus suggesting that the incidence of infection was higher over the first three years of life. Previous use of antibiotics was inversely associated with current Helicobacter pylori infection.

  4. Astronomy in Science Textbooks: An Analysis of Pnld 2008. (Spanish Title: Astronomía en los Libros de Ciencia: un Análisis del Pnld 2008.) Astronomia Nos Livros Didáticos de Ciências: Uma Análise do Pnld 2008

    NASA Astrophysics Data System (ADS)

    Amaral, Patrícia; Quintanilha Vaz de Oliveira, Carlos Eduardo

    2011-12-01

    The importance of the textbooks in classrooms is revealed when studies are pointing that these pedagogical sources are, most of the times, the only source used by the elementary school teachers when preparing their Science lessons. When we analyzed the Astronomy contents in the textbooks approved by the Brazilian Textbook Program 2008 and which, in theory, are the best available in the Brazilian editorial market, we examined some categories in the 2008 Textbook Guide. This research characterizes the frequency of Astronomical contents appearing in the texts, in the pictures, and in the hands-on activities. Additionally, it describes some misconceptions and presents additional information on the collections. La importancia de los libros de texto en las aulas se pone de manifiesto cuando los estudios indican que este recurso educativo es a menudo la única fuente de consulta utilizada por el profesor de ciencias de la escuela primaria para preparar sus lecciones. Cuando analizamos el contenido presente en los libros de texto de astronomía aprobados por el Programa Nacional de Libros de Texto de 2008 y que, en teoría, son los mejores libros disponibles en el mercado editorial brasileño, buscamos examinar algunas categorías que figuran en los libros de texto de la Guía de Libros Didácticos de 2008. El estudio caracteriza la frecuencia del contenido de Astronomía en el texto, en las figuras, y en las actividades de experimentación. También describe algunos errores conceptuales y presenta un conjunto de información adicional sobre las colecciones. A importância dos livros didáticos nas salas de aula revela-se quando estudos apontam que este recurso pedagógico é, muitas vezes, a única fonte de consulta utilizada pelo professor de Ciências do ensino fundamental para a preparação de suas aulas. Quando analisamos os conteúdos de Astronomia presentes nos livros didáticos aprovados no Programa Nacional do Livro Didático de 2008 e que, teoricamente, são os melhores livros disponíveis no mercado editorial brasileiro, buscamos esquadrinhar algumas categorias constantes no Guia de Livros Didáticos de 2008. A pesquisa caracteriza a freqüência do conteúdo de Astronomia no texto, nas figuras e nas atividades de experimentação. Além disso, descreve alguns erros conceituais e apresenta um conjunto de informações adicionais sobre as coleções.

  5. Cardiopulmonary Exercise Test: Background, Applicability and Interpretation.

    PubMed

    Herdy, Artur Haddad; Ritt, Luiz Eduardo Fonteles; Stein, Ricardo; Araújo, Claudio Gil Soares de; Milani, Mauricio; Meneghelo, Romeu Sérgio; Ferraz, Almir Sérgio; Hossri, Carlos; Almeida, Antonio Eduardo Monteiro de; Fernandes-Silva, Miguel Morita; Serra, Salvador Manoel

    2016-11-01

    surgimento de sintomas e/ou sinais limitantes. Neste exame se mensura a ventilação (VE), o consumo de oxigênio (VO2), a produção de gás carbônico (VCO2) e as demais variáveis de um teste de exercício convencional. Adicionalmente, podem ser verificadas, em situações específicas, a oximetria de pulso e as alças fluxo-volume antes, durante e após o esforço. A análise integrada dos dados permite a completa avaliação dos sistemas cardiovascular, respiratório, muscular e metabólico no esforço, sendo considerado padrão-ouro na avaliação funcional cardiorrespiratória.1-6 O TCPE permite definir mecanismos relacionados à baixa capacidade funcional, os quais podem ser causadores de sintomas como a dispneia, correlacionando-os com alterações dos sistemas cardiovascular, pulmonar e musculoesquelético. Também pode ser de grande aplicabilidade na avaliação prognóstica em cardiopatas, pneumopatas e em pré-operatório, além de auxiliar na prescrição mais criteriosa do exercício em sujeitos normais, em atletas, em cardiopatas e em pneumopatas. Assim como ocorre com o uso clínico, a pesquisa nesse campo também cresce e várias contribuições científicas de pesquisadores nacionais são publicadas em periódicos de alto fator de impacto. Sendo assim, o objetivo deste documento é fornecer uma revisão ampla da aplicabilidade do TCPE nas diferentes situações clínicas, bem como servir como guia prático na interpretação desse teste propedêutico.

  6. [Pneumocystis Pneumonia in 107 HIV Infected Patients Admitted to the Department of Infectious Diseases at Santa Maria Hospital, Lisbon (2002 - 2013)].

    PubMed

    Grilo, Vilma; Pereira, Aida

    2016-10-01

    Introdução: A pneumonia por Pneumocystis jirovecii é das doenças infecciosas oportunistas mais comuns em infectados por vírus da imunodeficiência humana, sendo, actualmente, em Portugal a infecção definidora de sida mais reportada. Os objectivos deste estudo foram, analisar as características de uma população co-infectada por vírus da imunodeficiência humana e pneumonia por Pneumocystis jirovecii, comparando-a com as referências disponíveis, e avaliar comparativamente subpopulações de doentes, consoante o conhecimento prévio da infecção por vírus da imunodeficiência humana, o método de diagnóstico de pneumonia por Pneumocystis jirovecii e o resultado na alta. Material e Métodos: Realizámos um estudo restrospectivo pela análise dos registos clínicos de 107 doentes internados no Serviço de Doenças Infecciosas do Hospital de Santa Maria, entre 1 de janeiro de 2002 e 31 de dezembro de 2013, com o diagnóstico de pneumonia por Pneumocystis jirovecii e vírus da imunodeficiência humana. As características epidemiológicas e clínicas foram avaliadas, incluindo o estado imunitário, a carga vírica e a terapêutica instituída e foi realizado um estudo estatístico das variáveis.Resultados: Nesta população, os resultados demonstraram predomínio do sexo masculino (81,3%), idade entre 20 - 39 anos (59,2%), transmissão de vírus da imunodeficiência humana por via heterossexual (48,6%), e que 24,3% eram imigrantes. Apesar do conhecimento da infecção por vírus da imunodeficiência humana (62,6%), 76,2% destes doentes não apresentava seguimento médico sustentado. A contagem de linfócitos TCD4+ ≤ 200 células/mm3 (96,3%), carga vírica elevada e candidose orofaríngea (72%) foram os principais factores de risco para o desenvolvimento de pneumonia por Pneumocystis jirovecii, e os marcadores de gravidade, como a hipoxemia (78,5%) e a elevação da LDH (82,2%) não traduziram pior prognóstico. Apenas foi possível isolar

  7. [Silicosis and industrial bronchitis by exposure to silica powders and cement].

    PubMed

    Méndez-Vargas, María Martha; Báez-Revueltas, Fabiola Berenice; López-Rojas, Pablo; Tovalín-Ahumada, José Horacio; Zamudio-Lara, José Othón; Marín-Cotoñieto, Irma Araceli; Villeda, Francisco

    2013-01-01

    Objetivo: asociar la exposición a polvos inorgánicos en trabajadores de una cantera y una cementera y la generación de alteraciones pulmonares. Métodos: estudio transversal con 32 trabajadores expuestos a polvos inorgánicos en una cantera y 57 en una cementera. Se les realizaron pruebas de función respiratoria y telerradiografías de tórax. Se midieron polvos totales. Resultados: existieron diferencias demográficas significativas entre las dos líneas de producción: los empleados de la cantera fueron más jóvenes, menos altos y ligeramente más delgados. La proporción de enfermos fue significativamente diferente entre las dos áreas: en la cementera fue menor que en la cantera. Aun cuando los trabajadores de la cantera tuvieron una antigüedad menor, presentaron problemas pulmonares más graves. Conclusiones: la cantidad de sílice libre que se maneja en la cantera afecta gravemente la salud de los trabajadores, ya que con un promedio de tres años de antigüedad laboral presentaban silicosis. Por ello, deben establecerse mejores programas de higiene industrial para el control de los polvos.

  8. [Mortality-associated factors in pediatric patients with Blalock-Taussig shunt].

    PubMed

    Aguilar-Segura, Perla Roxana; Lazo-Cárdenas, César; Rodríguez-Hernández, Lydia; Márquez-González, Horacio; Giménez-Scherer, Juan Antonio

    2014-01-01

    INTRODUCCIÓN: la supervivencia de los pacientes con cardiopatía congénita con flujo pulmonar disminuido ha aumentado debido a las técnicas de anastomosis quirúrgica entre la circulación sistémica y la pulmonar, sin embargo, pueden presentarse complicaciones. El objetivo de este estudio fue determinar los factores quirúrgicos y bioquímicos relacionados con la muerte en pacientes pediátricos en quienes se realizó derivación de Blalock-Taussig modificada. MÉTODOS: se integró una cohorte de neonatos con cardiopatía congénita sometidos a derivación tipo Blalock-Taussig que sobrevivieron a la cirugía. Al ingreso a cuidados intensivos se documentó tiempo quirúrgico, diámetro del injerto vascular de politetrafluoroetileno, gasometría arterial y saturación venosa central de oxígeno. Se dio seguimiento hasta el egreso o defunción. Para el análisis estadístico se utilizaron medidas de tendencia central y dispersión, chi cuadrada, razón de momios, modelo de regresión de Cox, hazard ratio (HR) y curva de Kaplan-Meier, para la variable más independiente.

  9. HOW TO ACHIEVE AND MAINTAIN NOTE 6: POSTGRADUATE PROGRAM IN TRANSLATIONAL SURGERY - UNIFESP.

    PubMed

    Sabino-Neto, Miguel; Ferreira, Lydia Masako

    2015-01-01

    adequação às normas vigentes. Os pontos principais para alcançar e manter conceito 6 foram: : 1) produção regular de teses de mestrado e doutorado com distribuição adequada entre todos os orientadores; 2) tempo médio de titulação adequado, assim como rígida seleção do alunado que zera as desistências e cancelamentos; 3) produção de artigos científicos alta em revistas de impacto e com participação docente e discente na sua grande maioria; 4) aumento progressivo e substancial da captação de recursos e busca de patentes; 5) aumento progressivo dos intercâmbios internacionais com produção conjunta; 6) visibilidade através de novo site bilíngue e atualizado semanalmente; 7) inúmeras atividades de solidariedade em pesquisa, mas também em Serviços de Saúde para a população e mesmo no ensino básico; 8) rigorosa seleção dos alunos (através de análise de projeto, currículo e programa de estágio docente); 9) manutenção de índices elevados de produção dos docentes; 10) preparação de novos docentes para orientação através de participação como co-orientação e envolvimento no programa para se adequar às necessidades. O Programa de Pós-Graduação em Cirurgia Translacional passou por momentos difíceis e que através de uma série de medidas, ajustes e a colaboração e compreensão do seu corpo docente pode sair da nota 3 e quase fechamento, para um nível de excelência mantendo nota 6 em três triênios seguidos.

  10. SCIENTIFIC LEADERS FOR THE FUTURE: PRIMARY AND SECONDARY EDUCATION.

    PubMed

    Nascimento, Fernanda Amorim de Morais; Gregório, Bianca Martins; Souza, Diogo Benchimol de; Sampaio, Francisco José Barcellos; Ferreira, Lydia Masako

    2015-01-01

    To present a high school insertion pilot project in post graduate programs (PPG) and discuss the mechanisms for the formation of leaders in science. This study presents a review and pilot project. Bibliographic search occurred in sites of CAPES, MEC, SciELO and library of virtual books from January/ 2014 to February/2015. The pilot is in PPG-Medicine III Translational Surgery/UNIFESP and Pathophysiology and Surgical Sciences / UERJ. The junior undergraduate students (ICj) came from public school and develop scientific activities: scientific meetings, graduation and inclusion in research projects. The evaluation will occur at the end of one year, with the results essays, reports and participation in scientific events. In Brazil, one of the main challenges of education is the high average years of study. The PNPG (2011-2020) shows the insertion of basic education in all PPG. In the Pathophysiology and Surgical Sciences/UERJ there are currently 11 high school students who have followed the scientific meetings and are being prepared for the inclusion in research projects. There was 30% of absence, owing to the high school hours. This result and the experience allow creating future alternatives to enhance the integration project. The leadership in science is formed from a complex relationship between basic education and investment in research. PPG-Medicine III courses follow the vanguard with initiatives focused on scientific and technological development. Thus, projects involving basic education students represent promoter model and environment leaders. Apresentar um projeto piloto de inserção do ensino médio em programas de pós-graduação (PPG) e discutir os mecanismos para a formação de líderes em ciência. Realizou-se um estudo de revisão e apresentação de piloto. A busca bibliográfica ocorreu nos sites da CAPES, MEC, Scielo e biblioteca de livros virtuais, de janeiro/2014 a fevereiro/2015. O piloto ocorre nos PPG-Medicina III em Cirurgia Translacional

  11. Factors associated with subendocardial ischemia risk in patients on hemodialysis.

    PubMed

    Silva, Bruno Caldin da; Sanjuan, Adriano; Costa-Hong, Valéria; Reis, Luciene Dos; Graciolli, Fabiana; Consolim-Colombo, Fernanda; Bortolotto, Luiz Aparecido; Moyses, Rosa Maria Affonso; Elias, Rosilene Motta

    2016-01-01

    , um novo marcador de aterosclerose, pode contribuir para este risco. Apesar de associada a aumento de mortalidade na população geral, a avaliação de tal disfunção ainda não foi realizada de modo amplo em pacientes em hemodiálise. Neste estudo transversal, pacientes em hemodiálise foram submetidos à avaliação da vasodilatação mediada por fluxo, razão de viabilidade subendocárdica (RVSE) e índice de duração de ejeção, como estimativas de avaliação dos marcadores de DMO sobre disfunção vascular. Uma coorte pareada com (n = 16) e sem (n = 11) hiperparatireoidismo secundário (HPTS) grave foi estudada. Adicionalmente, o tempo transcorrido do diagnóstico de HPTS grave também foi avaliado. Pacientes com HPTS grave apresentaram menores valores de RVSE e maiores valores de índice de duração de ejeção, apontando maior risco cardiovascular. Baixa RVSE também foi associada à pressão arterial diastólica (r = 0,435, p = 0,049), níveis séricos de 25-Vitamina D (r = 0,479, p = 0,028) e maior tempo transcorrido desde diagnóstico de HPTS grave, definido como tempo em que o paciente permaneceu com valores de paratormônio superiores a 500 pg/ml até realização de cirurgia de paratireoidectomia ou término do estudo (r = -0,642, p = 0,027). Em regressão logística stepwise entre RVSE e variáveis independentes, menor RVSE foi independentemente associado a menores valores de 25-Vitamina D (p = 0,005), sexo feminino (p = 0,012) e maior tempo transcorrido desde diagnóstico de HPTS grave (p = 0,001) em um modelo ajustado para idade, colesterol sérico e pressão arterial (r2 ajustado = 0,545, p = 0,001). A perfusão subendocárdica foi menor em pacientes com DMO, refletindo o maior risco cardiovascular nesta população. Investigações adicionais são necessárias para definir se a paratireoidectomia precoce no curso da doença renal crônica poderia interferir neste risco.

  12. Safe surgery: validation of pre and postoperative checklists.

    PubMed

    Alpendre, Francine Taporosky; Cruz, Elaine Drehmer de Almeida; Dyniewicz, Ana Maria; Mantovani, Maria de Fátima; Silva, Ana Elisa Bauer de Camargo E; Santos, Gabriela de Souza Dos

    2017-07-10

    to develop, evaluate and validate a surgical safety checklist for patients in the pre and postoperative periods in surgical hospitalization units. methodological research carried out in a large public teaching hospital in the South of Brazil, with application of the principles of the Safe Surgery Saves Lives Programme of the World Health Organization. The checklist was applied to 16 nurses of 8 surgical units and submitted for validation by a group of eight experts using the Delphi method online. the instrument was validated and it was achieved a mean score ≥1, level of agreement ≥75% and Cronbach's alpha >0.90. The final version included 97 safety indicators organized into six categories: identification, preoperative, immediate postoperative, immediate postoperative, other surgical complications, and hospital discharge. the Surgical Safety Checklist in the Pre and Postoperative periods is another strategy to promote patient safety, as it allows the monitoring of predictive signs and symptoms of surgical complications and the early detection of adverse events. elaborar, avaliar e validar um checklist de segurança cirúrgica para os períodos pré e pós-operatório de unidades de internação cirúrgica. pesquisa metodológica, realizada em hospital de ensino público de grande porte do Sul do Brasil, com aplicação dos fundamentos do Programa Cirurgias Seguras Salvam Vidas da Organização Mundial da Saúde. O checklist foi aplicado a 16 enfermeiros de oito unidades cirúrgicas, e submetido à validação por meio da técnica Delphi on-line com oito especialistas. o instrumento foi validado, obtendo-se ranking médio ≥1, grau de concordância ≥75% e Alfa de Cronbach >0,90. A versão final contemplou 97 indicadores de segurança organizados em seis categorias: identificação, pré-operatório, pós-operatório imediato, pós-operatório mediato, outras complicações cirúrgicas, e alta hospitalar. o Checklist de Segurança Cirúrgica Pré e P

  13. [Chronic hypocalcemia due to anti-calcium sensing receptor antibodies].

    PubMed

    Marques, Pedro; Santos, Rita; Cavaco, Branca; Leite, Valeriano

    2014-01-01

    Introdução: O hipoparatiroidismo cursa com hipocalcemia e é mais frequentemente registado após cirurgia cervical. A etiologia autoimune é mais rara e difícil de diagnosticar. Caso clínico: Mulher, 52 anos, sem antecedentes pessoais, medicamentosos ou familiares relevantes, referenciada por hipocalcemia e calcificação dos núcleos da base, detetados no decurso de investigação de quadro de mialgias. Além de hipocalcemia (4,6 mg/dL), foi verificada hiperfosfatemia (8,7 mg/dL), hormona paratiroideia indetetável, calciúria, fosfatúria e magnesúria baixas. A análise molecular do gene CaSR excluiu mutações germinais. A pesquisa de anticorpos anti-receptor sensível do cálcio (anti-CaSR) foi positiva. Atualmente está assintomática e normocalcémica sob terapêutica com cálcio e vitamina D. Discussão: Embora rara, a hipocalcemia por hipoparatiroidismo autoimune deve ponderar-se em adultos sem antecedentes de cirurgia cervical, medicação hipocalcemiante, história familiar ou fenótipo sugestivo de doença genética. Hormona paratiroideia diminuída ou indetetável exclui pseudohipoparatiroidismo e a positividade para anti-CaSR confirma o diagnóstico.

  14. JOURNALS ANALYSIS IN UROLOGY AND PLASTIC SURGERY.

    PubMed

    Antunes, Alberto Azoubel

    2015-01-01

    Find out the main journals used in Urology and Plastic Surgery. Was consulted the WebQualis database and selected the "consult" after the "rating" and finally by "journal title." Also was crossed the following keywords: urology, urologic, urological, prostate, prostatic, plastic, reconstructive, aesthetic. The journals classified in the field of Capes Medicine III were selected, and registered their respective strata. To confirm the 2014 impact factor, was consulted the http://www.impactfactorsearch.com/ database; simply typing the journal title its impact factor appears automatically. Was found 23 journals in Urology and 12 in Plastic Surgery. The average impact factor of urological journals was 2,256 and in Plastic Surgery 1,060. Among the urological journals, seven (30.4%) were in the A WebQualis rating and among Plastic Surgery only one (8.3%) was found in this stratum. There are quantitative and qualitative differences between journals in Urology and Plastic Surgery. These data can help to develop appropriate assessment methods for each specialty, considering the different features of the presented papers. Procurar destacar os principais periódicos utilizados na urologia e na cirurgia plástica. Foi consultada a base de dados WebQualis. Selecionou-se a opção "consultar", depois a opção "classificação" e por fim por "título do periódico". Cruzaram-se também os seguintes descritores: urology, urologic, urological, prostate, prostatic, plastic, reconstructive, aesthetic. Os periódicos classificados na área da Medicina III da Capes foram selecionados, e seus respectivos estratos registrados. Para confirmação do fator de impacto de 2014, consultou-se a base de dados http://www.impactfactorsearch.com/, onde a digitação do nome do periódico revela automaticamente seu impacto. Foram encontrados 23 periódicos urológicos e 12 na cirurgia plástica. O fator de impacto médio dos urológicos foi de 2.256 e o da cirurgia plástica de 1.060. Entre os peri

  15. Analysis of obese patients' medical conditions in the pre and postoperative periods of bariatric surgery.

    PubMed

    Rêgo, Anderson DA Silva; Zulin, Aline; Scolari, Sandro; Marcon, Sônia Silva; Radovanovic, Cremilde Aparecida Trindade

    2017-01-01

    to compare the clinical conditions of obese patients in the pre and postoperative period of bariatric surgery. we carried out a descriptive, retrospective, quantitative study by consulting the charts of 134 patients who underwent bariatric surgery in the period from 2009 to 2014. We collected the data between September and November 2015. We performed a descriptive statistical analysis and comparative analysis of anthropometric, metabolic, biochemical and clinical variables, considering six months before and after surgery. the majority of the patients were female (91.8%), with a higher prevalence (35%) in the age group 18-29 years old, complete high-school education (65.6%) and grade III obesity (60.4%). Six months after surgery, weight and lipid profile reduction were significant in both genders, but the impact on biochemical, anthropometric, metabolic and clinical parameters was significant only in female subjects, with a reduction in morbidities associated with obesity, such as arterial hypertension, diabetes mellitus, dyslipidemia and metabolic syndrome and in the use of drugs to control them. bariatric surgery was effective in weight loss, with improvements in anthropometric, metabolic and biochemical parameters and in the reduction of morbidities associated with obesity. comparar as condições clínicas de pacientes obesos em período pré e pós-operatório de cirurgia bariátrica. estudo descritivo, retrospectivo, de abordagem quantitativa, por meio de consulta ao prontuário de 134 pacientes submetidos à cirurgia bariátrica no período de 2009 a 2014. Os dados foram coletados entre os meses de setembro e novembro de 2015. Foi realizada análise estatística descritiva e comparativa das variáveis antropométricas, metabólicas, bioquímicas e clínicas, considerando seis meses antes e após a cirurgia. a maioria dos pacientes era do sexo feminino (91,8%), com maior prevalência (35%) na faixa etária de 18 aos 29 anos, com ensino médio completo (65

  16. Diaphragmatic mobility: relationship with lung function, respiratory muscle strength, dyspnea, and physical activity in daily life in patients with COPD.

    PubMed

    Rocha, Flávia Roberta; Brüggemann, Ana Karla Vieira; Francisco, Davi de Souza; Medeiros, Caroline Semprebom de; Rosal, Danielle; Paulin, Elaine

    2017-01-01

    To evaluate diaphragmatic mobility in relation to lung function, respiratory muscle strength, dyspnea, and physical activity in daily life (PADL) in patients with COPD. We included 25 patients with COPD, classified according to the Global Initiative for Chronic Obstructive Lung Disease criteria, and 25 healthy individuals. For all of the participants, the following were evaluated: anthropometric variables, spirometric parameters, respiratory muscle strength, diaphragmatic mobility (by X-ray), PADL, and the perception of dyspnea. In the COPD group, diaphragmatic mobility was found to correlate with lung function variables, inspiratory muscle strength, and the perception of dyspnea, whereas it did not correlate with expiratory muscle strength or PADL. In patients with COPD, diaphragmatic mobility seems to be associated with airway obstruction and lung hyperinflation, as well as with ventilatory capacity and the perception of dyspnea, although not with PADL. Avaliar a relação da mobilidade diafragmática com a função pulmonar, força muscular respiratória, dispneia e atividade física de vida diária (AFVD) em pacientes com DPOC. Foram avaliados 25 pacientes com diagnóstico de DPOC, classificados de acordo com critérios da Global Initiative for Chronic Obstructive Lung Disease, e 25 indivíduos saudáveis. Todos foram submetidos às seguintes avaliações: mensuração antropométrica, espirometria, força muscular respiratória, mobilidade diafragmática (por radiografia), AFVD e percepção de dispneia. No grupo DPOC, houve correlações da mobilidade diafragmática com variáveis de função pulmonar, força muscular inspiratória e percepção de dispneia. Não houve correlações da mobilidade diafragmática com força muscular expiratória e AFVD. A mobilidade diafragmática parece estar associada tanto com a obstrução das vias aéreas quanto com a hiperinsuflação pulmonar em pacientes com DPOC, assim como com a capacidade ventilatória e percep

  17. [Ocular complications in treatment with antitubercular agents in patients with chronic kidney failure on regular dialysis therapy].

    PubMed

    Stibor, V; Lachmanová, J; Tomásek, R

    1989-02-01

    A 22 years old woman suffering from renal insufficiency has been treated for 4 years by means of regular dialysis. Two years after the beginning of this therapy the renal transplantation was performed, but the graft was removed after 3 weeks. The hypertonic neuropathy was diagnosed. Patient was treated with antituberculotics, Imuran and Prednisone. After Ethambutol treatment indicated for pulmonar tbc (daily dose 11 mg per kg, the total dose of 33,6 g) the ocular side effects were pronounced: the toxical damage of both optical nerves, bilateral decrease of vision for distance and near, minute scotoma in the retinal centre of the left eye, deterioration of the vision of colours in the sense of deuteranopia. Complications were reversible, when the therapy with Ethambutol was discontinued and patient was treated with vitamins and Prednison in the total dose of 1,420 g. Authors mention also some other signs of ocular toxicity of antituberculotics.

  18. Effects of emissions from sugar cane burning on the trachea and lungs of Wistar rats.

    PubMed

    Matos, Verena Sampaio Barbosa; Gomes, Felipe da Silva; Oliveira, Tarcio Macena; Schulz, Renata da Silva; Ribeiro, Lídia Cristina Villela; Gonzales, Astria Dias Ferrão; Lima, Januário Mourão; Guerreiro, Marcos Lázaro da Silva

    2017-01-01

    To evaluate the effects of exposure to emissions from sugar cane burning on inflammatory mechanisms in tissues of the trachea and lung parenchyma in Wistar rats after different periods of exposure. This was an experimental open randomized study. The animals were divided into four groups: a control group (CG) underwent standard laboratory conditions, and three experimental groups were exposed to emissions from sugar cane burning over different periods of time, in days-1 (EG1), 7 (EG7), and 21 (EG21). After euthanasia with 200 mg/kg of ketamine/xylazine, fragments of trachea and lung were collected and fixed in 10% formalin. Histological analyses were performed with H&E and picrosirius red staining. No inflammatory infiltrates were found in the tissues of CG rats. The histological examination of tissues of the trachea and lung parenchyma revealed that the inflammatory process was significantly more intense in EG7 than in the CG (p < 0.05 and p < 0.01, respectively). In comparison with the CG and EG1, angiogenesis in the lung parenchyma and collagen deposition in tracheal tissues were significantly greater only in EG21 (p < 0.001 and p < 0.01, respectively). In this sample, emissions from sugar cane burning induced acute focal and diffuse inflammation in the lamina propria of tracheal tissues, with no loss of ciliated epithelial tissue. In the lung parenchyma of the animals in the experimental groups, there was interstitial and alveolar edema, together with polymorphonuclear cell infiltrates. Avaliar os efeitos da exposição à fumaça da queima da cana-de-açúcar sobre mecanismos inflamatórios em tecidos de traqueia e de parênquima pulmonar de ratos Wistar após diferentes períodos de exposição. Estudo experimental, randomizado, não cego. Os animais foram divididos em quatro grupos: controle (GC), sob condições padrão de laboratório e os demais expostos à fumaça da queima da cana-de-açúcar por diferentes períodos: em 1 (GE1), 7 (GE7) e 21 (GE21) dias

  19. Educational intervention for collecting sputum for tuberculosis: a quasi-experimental study.

    PubMed

    Sicsú, Amélia Nunes; Salem, Julia Ignez; Fujimoto, Luciana Botinelly Mendonça; Gonzales, Roxana Isabel Cardozo; Cardoso, Maria do Socorro de Lucena; Palha, Pedro Fredemir

    2016-06-07

    to evaluate the quality of the sputum sample before and after the Nursing guidance to patients. this is a quasi-experimental research design, single group type, before and after, non-randomized study. The study enrolled patients with suspected pulmonary tuberculosis, respiratory symptomatic patients for over three weeks, aged over 18 years, of both genders and without tuberculosis history in the last two years. The educational intervention consisted of individualized guidance on the collection of sputum sample, which was based on the guidelines of the Ministry of Health of Brazil and on the explanatory folder delivery. in this study participated 138 patients with suspected pulmonary tuberculosis. The results showed significant increase of the samples with purulent particles, volume greater than 5 mL and increased rate of patients diagnosed with tuberculosis, after the educational intervention. it was shown that after the educational intervention, it was observed sputum samples with better quality, with satisfactory aspect and volume for the effectiveness of the bacilloscopic examination. avaliar a qualidade da amostra de escarro antes e após as orientações de Enfermagem ao paciente. estudo com delineamento de pesquisa quase experimental, do tipo grupo único, antes e depois, não randomizado. Participaram do estudo pacientes com suspeita de tuberculose pulmonar, sintomáticos respiratórios por mais de três semanas, maiores de 18 anos, de ambos os sexos e sem antecedente de tuberculose nos últimos dois anos. A intervenção educativa consistiu em orientações individualizadas sobre a coleta da amostra de escarro, fundamentadas nas diretrizes do Ministério da Saúde do Brasil e na entrega de folder explicativo. participaram 138 pacientes com suspeita de tuberculose pulmonar. Os resultados evidenciaram importante acréscimo das amostras com partículas purulentas, volume maior que 5mL e aumento na taxa de pacientes diagnosticados com tuberculose, após a

  20. [2 cases of substitution of the portal vein with a dacron prosthesis during pancreatectomy for carcinoma of the head of the pancreas].

    PubMed

    Marni, A; Meroni, R; Aseni, P

    1979-09-30

    The Authors report their experience concerning two cases of pancreatic carcinoma in which growth involvement of retropancreatic venous peduncle required the removal of a tract 6 and 8 cm long of the mesenteric-portal axis and its replacement with knitted dacron graft. The first patient died 8 months later due to massive pulmonar and hepatic metastases. The second patient died in the early post-operative course due to septic shock and dacron graft did not show any evidence of lumen obstruction at post-mortem examination. In spite of the lack of controlled clinical trials which provide a well defined method of staging for carcinoma of the pancreas, the authors' experience shows the possibility of extending radical resections also to cases which usually are considered unresectable and in absence of politetrafluoroethylene graft also with the use of interposed knitted dacron graft good results can be achieved.

  1. Post Secondary Education Through Telecommunications. Final Report of Twelve CY 1974 Work Assignments to the National Institute of Education.

    ERIC Educational Resources Information Center

    McBride, Jack G.

    Described are the investigatory procedures, research and development, and achievements and conclusions for each of 12 work assignments for the 13-month period from January 1, 1974 through January 31, 1975 relating to the University of Mid-America (UMA). UMA is a regional consortium, comprised of the University of Kansas, Kansas State University,…

  2. Drug-induced sleep endoscopy in the identification of obstruction sites in patients with obstructive sleep apnea: a systematic review.

    PubMed

    Viana, Alonço da Cunha; Thuler, Luiz Claudio Santos; Araújo-Melo, Maria Helena de

    2015-01-01

    Obstructive sleep apnea syndrome has multifactorial causes. Although indications for surgery are evaluated by well-known diagnostic tests in the awake state, these do not always correlate with satisfactory surgical results. To undertake a systematic review on endoscopy during sleep, as one element of the diagnosis routine, aiming to identify upper airway obstruction sites in adult patients with OSAS. By means of electronic databases, a systematic review was performed of studies using drug-induced sleep endoscopy to identify obstruction sites in patients with OSAS. Ten articles were selected that demonstrated the importance of identifying multilevel obstruction, especially in relation to retrolingual and laryngeal collapse in OSAS. DISE is an additional method to reveal obstruction sites that have not been detected in awake patients. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  3. Dysprosody nonassociated with neurological diseases--a case report.

    PubMed

    Pinto, José Antonio; Corso, Renato José; Guilherme, Ana Cláudia Rocha; Pinho, Sílvia Rebelo; Nóbrega, Monica de Oliveira

    2004-03-01

    Dysprosody also known as pseudo-foreign dialect, is the rarest neurological speech disorder. It is characterized by alterations in intensity, in the timing of utterance segments, and in rhythm, cadency, and intonation of words. The terms refers to changes as to duration, fundamental frequency, and intensity of tonic and atonic syllables of the sentences spoken, which deprive an individual's particular speech of its characteristics. The cause of this disease is usually associated with neurological pathologies such as brain vascular accidents, cranioencephalic traumatisms, and brain tumors. The authors report a case of dysprosody attended to at the Núcleo de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço de São Paulo (NOSP). It is about a female patient with bilateral III degree Reinke's edema and normal neurological examinations that started presenting characteristics of the German dialect following a larynx microsurgery.

  4. [Thymus surgery in a general surgery department].

    PubMed

    Mega, Raquel; Coelho, Fátima; Pimentel, Teresa; Ribero, Rui; Matos, Novo de; Araújo, António

    2005-01-01

    Evaluation of thymectomy cases between 1990-2003, in a General Surgery Department. Evaluation of the therapeutic efficacy in Miastenia Gravis patients. Retrospective study based on evaluation of data from Serviço de Cirurgia, Neurologia and Consult de Neurology processes, between 1990-2003, of 15 patients submitted to total thymectomy. 15 patients, aged 17 to 72, 11 female and 4 male. Miastenia Gravis was the main indication for surgery, for uncontrollable symptoms or suspicion of thymoma. In patients with myasthenia, surgery was accomplish after compensation of symptoms. There weren't post-surgery complications. Pathology were divided in thymic hyperplasia and thymoma. Miastenia patients have there symptoms diminished or stable with reduction or cessation of medical therapy. Miastenia was the most frequent indication for thymectomy. Surgery was good results, with low morbimortality, as long as the protocols are respected.

  5. Transeptal suturing - a cost-efficient alternative for nasal packing in septal surgery.

    PubMed

    Plasencia, Daniel Pérez; Falcón, Juan Carlos; Barreiro, Silvia Borkoski; Bocanegra-Pérez, María Sacramento; Barrero, Mario Vicente; Macías, Ángel Ramos

    2016-01-01

    Nasal packing is routinely used in septal surgery to prevent postoperative bleeding. To demonstrate the possibility of transeptal suture as a safe and effective way to avoid nasal packing and to improve efficiency. This is a prospective, descriptive, inferential cost study comprising 92 patients. Two randomized groups of patients were analyzed, one with nasal packing and the other with transeptal suture. In the group of transeptal suture no patient experienced postoperative bleeding, and a statistically significant reduction of pain and headache was demonstrated. At the same time, we improved efficiency by saving on material costs. Transeptal suture is an effective and safe alternative to classic nasal packing in septal surgery. Moreover, it improves the efficiency of the intervention by saving costs. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  6. [Transobturator slings for female stress urinary incontinence].

    PubMed

    Sousa, Ana; Jesus, André; Carvalho, Maria; Carvalho, Giselda; Marques, João; Falcão, Francisco; Torgal, Isabel

    2014-01-01

    Introdução: A incontinência urinária de esforço afeta 20 a 40% das mulheres. Os slings colocados sob a uretra média, aplicados por via transobturadora, são a terapêutica consensualmente aceite na atualidade. O objetivo do estudo foi avaliar a eficácia e possíveis complicações associadas à aplicação dos slings colocados por via transobturadora no tratamento da incontinência urinária de esforço. Material e Métodos: Avaliaram-se retrospetivamente 363 doentes submetidas a cirurgia de incontinência urinária de esforço por via transobturadora, nos Hospitais da Universidade de Coimbra do Centro Hospitalar e Universitário de Coimbra, no período de 1 Janeiro de 2008 a 1 Julho de 2010. Resultados: A média das idades das doentes foi de 56 anos [28-86]. Além da correção da incontinência urinária de esforço, em 13,5% das mulheres foi associada outra cirurgia vaginal. A maioria (95,3%) das mulheres apresentou hipermobilidade da uretra. Ocorreram complicações per-operatórias em 0,8%, complicações pós-operatórias imediatas em 5,2% e complicações pós-operatórias tardias em 15,7%. A taxa de sucesso global foi de 93,7%. A taxa de sucesso nas doentes com uretra fixa foi 77,8%, verificando-se melhores resultados (94,5%) naquelas com hipermobilidade da uretra (p = 0,02). A taxa de sucesso foi comparável nas doentes com e sem cirurgias vaginais associadas. Discussão: As técnicas transobturadoras têm taxas de sucesso elevadas, tendo-se tornado o tratamento de primeira linha para as doentes com IUE, independentemente se tratadas pela técnica outside-in (TOT®) ou pela inside-out (TVT-O®). Ambas as técnicas foram concebidas com o intuito de evitar a passagem no espaço retropúbico, reduzindo assim o número de complicações. Conclusão: As taxas de cura para as abordagens transobturadoras oscilam entre 80 e 95%. A taxa de cura aumenta quando o mecanismo responsável pela incontinência urinária de esforço é a hipermobilidade da uretra

  7. [Citing of national articles: the (de)valuation of Brazilian journals].

    PubMed

    Teixeira, Renan Kleber Costa; Silveira, Tiago Santos; Botelho, Nara Macedo; Petroianu, Andy

    2012-01-01

    To evaluate whether there is a preference for foreign periodicals over Brazilian one. We evaluated all references of articles published in the years 2011 and 2007 in the journals Acta Cirúrgica Brasileira, Arquivos Brasileiros de Cirurgia Digestiva and the Journal of the Brazilian College of Surgeons, verifying the quantity of papers from Brazilian and foreign publications. We analyzed a total of 7,343 references arranged in 348 articles in those three journals; of these, 856 (11.65%) were from Brazilian journals. There was no difference between the three magazines, nor between the two periods. One hundred and eleven (31.9%) articles did not cite any Brazilian journal article and 36 (10.34%) cited Brazilian articles more than foreign ones. There is need for the Brazilian researcher to appreciate more the Brazilian journals, increasing citation from Brazil, without a scientific xenophobia.

  8. [Is allastrim small pox?].

    PubMed

    Tiexeira, L A

    2000-01-01

    Between 1910 and 1913, two renowned physicians in the city of Sao Paulo found themselves engaged in a scientific controversy regarding the classification of a disease then assailing the state. Antonio Carini, director of the Instituto Pasteur de Sao Paulo, believed the illness to be small pox, while Emilio Ribas, director of the Servico Sanitario, claimed it was allastrim, or milk pox. The controversy started in the Sociedade de Medicina e Cirurgia but later migrated to other forums and came to incorporate other figures as well. This presentation and discussion of the polemic is meant as a contribution to our understanding of the process by which a scientific consensus is constructed and solidified within the field of the biomedical sciences.

  9. Proliferative verrucous leukoplakia: diagnosis, management and current advances.

    PubMed

    Capella, Diogo Lenzi; Gonçalves, Jussara Maria; Abrantes, Adelino António Artur; Grando, Liliane Janete; Daniel, Filipe Ivan

    Proliferative verrucous leukoplakia is a multifocal and progressive lesion of the oral mucosa, with unknown etiology, and commonly resistant to all therapy attempts with frequent recurrences. It is characterized by a high rate of oral squamous cell carcinoma and verrucou carcinoma transformations. To analyze the studies about Proliferative verrucous leukoplakia and develop a concise update. A Pubmed search identifying studies (laboratory research, case series and reviews of literature) that examined patients with Proliferative verrucous leukoplakia was realized. There are not enough studies about Proliferative verrucous leukoplakia in the literature. The few found studies not present a consensus about its etiology and diagnosis criteria. Although several treatment strategies have been proposed, most of them still show a high recurrence rate. More research about Proliferative verrucous leukoplakia is necessary to understand and treat this disease. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  10. Postural control in Parkinson's disease.

    PubMed

    Fukunaga, Jackeline Yumi; Quitschal, Rafaela Maia; Doná, Flávia; Ferraz, Henrique Ballalai; Ganança, Maurício Malavasi; Caovilla, Heloísa Helena

    2014-01-01

    Postural instability is one of the most disabling features of Parkinson's disease. To evaluate postural balance in Parkinson's disease. Thirty patients with Parkinson's disease were compared with controls using Tetrax™ interactive balance system posturography. For different positions, patients with Parkinson's disease showed a significantly higher weight distribution index, fall index, Fourier transformation at low-medium frequencies (F2-F4), and significantly lower right/left and toe/heel synchronization versus controls. Postural imbalance in Parkinson's disease patients is characterized by the abnormalities of weight distribution index, synchronization index, Fourier transformation index, and fall index as measured by Tetrax™ posturography. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  11. Medieval orthopaedic history in Germany: Hieronymus Brunschwig and Hans von Gersdorff.

    PubMed

    Hernigou, Philippe

    2015-10-01

    Hans von Gerssdorff and Hieronymus Brunschwig, who flourished in Germany in the latter half of the fifteenth century, have both left early printed treatises on Surgery which give excellent woodcuts showing pictures of instruments, operations, and costumes, at the end of the medieval period. Hieronymus Brunschwig or Hieronymus Brunschwygk (ca. 1450 - ca. 1512), was a German surgeon (wundartzot), alchemist and botanist. He was notable for his methods of treatment of gunshot wounds. His most influential book was the Buch der Cirurgia. Gersdorff(1455-1529) was a military surgeon who gained wide experience during 40 years of campaigning and was an expert in the treatment of battlefield injuries. His work covers anatomy, surgery, leprosy, and glossaries of anatomical terms, diseases, and medications.

  12. Impact of delay in the diagnosis and treatment of head and neck cancer.

    PubMed

    Felippu, André Wady Debes; Freire, Eduardo Cesar; Silva, Ricardo de Arruda; Guimarães, André Vicente; Dedivitis, Rogério Aparecido

    2016-01-01

    Head and neck tumors can be easily recognized through clinical evaluation. However, they are often diagnosed at advanced stages. To evaluate the delay from the patient's initial symptoms to the definitive treatment. Retrospective study of patients enrolled in 2011 and 2012. A questionnaire was filled in about socioeconomic aspects, patient history, tumor data, professionals who evaluated the patients, and the respective time delays. The following time delay medians were observed: ten months between symptom onset and the first consultation; four weeks between the latter and the first consultation with a specialist; four weeks between the specialist consultation and diagnosis attainment; and 12 weeks between diagnosis and the start of treatment. Most head and neck tumors are diagnosed at advanced stages, due to patient and health care factors. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  13. Profile of the newly graduated physicians in southern Brazil and their professional insertion.

    PubMed

    Purim, Kátia Sheylla Malta; Borges, Luiza DE Martino Cruvinel; Possebom, Ana Carolina

    2016-01-01

    Knowledge of the profile and professional integration of new graduates enables adjustments in medical education. This study evaluated 107 graduates from a private institution in the Brazilian South region, using a self-administered electronic questionnaire. There were similar participation of young physicians of both genders and higher male concentration in general surgery. Graduates are inserted in the public and private labor market. Most do extra shifts in emergency services and trauma surgery, where there is greater need for clinical and surgical skills. These findings suggest that adequate surgical training during graduation is critical to employability. RESUMO O conhecimento do perfil e inserção profissional dos recém-formados possibilita ajustes na educação médica. Este estudo avaliou 107 egressos de instituição privada no sul do país, utilizando questionário eletrônico autoaplicável. Houve participação similar de jovens de ambos os sexos e maior concentração masculina na área de cirurgia geral. Os egressos estão inseridos no mercado de trabalho público e privado. A maioria faz plantões extras em serviços de emergência e cirurgia do trauma, onde há maior necessidade de habilidades clinicas e cirúrgica. Esses achados apontam que a formação cirúrgica adequada durante a graduação é fundamental para a empregabilidade.

  14. The role of surgery in the management of women with gestational trophoblastic disease.

    PubMed

    Lima, Lana DE Lourdes Aguiar; Padron, Lílian; Câmara, Raphael; Sun, Sue Yazaki; Rezende, Jorge; Braga, Antônio

    2017-01-01

    The Gestational Trophoblastic Disease includes an interrelated group of diseases originating from placental tissue, with distinct behaviors concerning local invasion and metastasis. The high sensitivity of the serial dosages of human chorionic gonadotrophin, combined with advances in chemotherapy treatment, have made gestational trophoblastic neoplasia curable, most often through chemotherapy. However, surgery remains of major importance in the management of patients with gestational trophoblastic disease, improving their prognosis. Surgery is necessary in the control of the disease's complications, such as hemorrhage, and in cases of resistant/relapsed neoplasia. This review discusses the indications and the role of surgical interventions in the management of women with molar pregnancy and gestational trophoblastic neoplasia. RESUMO Doença trofoblástica gestacional inclui um grupo interrelacionado de doenças originadas do tecido placentário, com tendências distintas de invasão local e metástase. A alta sensibilidade das dosagens seriadas de gonadotrofina coriônica humana aliada aos avanços do tratamento quimioterápico tornou a neoplasia trofoblástica gestacional, curável, na maioria das vezes, através da quimioterapia. No entanto, a cirurgia permanece ainda, da maior importância na condução de pacientes com doença trofoblástica gestacional, melhorando seu prognóstico. A cirurgia é necessária no controle de complicações da doença, tais como hemorragia, e em casos de neoplasia resistente/recidivada. Esta revisão discute as indicações e o papel das intervenções cirúrgicas durante o manejo de mulheres com gravidez molar e neoplasia trofoblástica gestacional.

  15. Minilaparoscopy-assisted transumbilical laparoscopic cholecystectomy.

    PubMed

    Lima, Geraldo José DE Souza; Leite, Rodrigo Fabiano Guedes; Abras, Gustavo Munayer; Pires, Livio José Suretti; Castro, Eduardo Godoy

    2016-01-01

    The role of laparoscopy in the modern surgery era is well established. With the prospect of being able to improve the already privileged current situation, new alternatives have been proposed, such as natural orifice endoscopic surgery (NOTES), the method for single transumbilical access (LESS - Laparo-endoscopic single-site surgery) and minilaparoscopy (MINI). The technique proposed by the authors uses a laparoscope with an operative channel like the flexible endoscope used in NOTES. All operative times are carried out through the umbilical trocar as in LESS, and assisted by a minilaparoscopy grasper. This new technic combines, and results from, the rationalization of technical particularities and synergy of these three approaches, seeking to join their advantages and minimize their disadvantages. RESUMO O papel da videolaparoscopia na era moderna da cirurgia encontra-se bem estabelecido. Com a perspectiva de ser possível melhorar a já privilegiada situação atual, novas alternativas têm sido propostas, como a cirurgia por orifícios naturais (NOTES), o método por acesso único transumbilical (LESS - Laparo-endoscopic single-site surgery) e a minilaparoscopia (MINI). A técnica proposta pelos autores utiliza-se de óptica com canal de trabalho como o endoscópio flexível do NOTES, executa-se todos os tempos operatórios pelo trocarte umbilical, como no LESS, e é assistido por pinça de minilaparoscopia. Esta nova técnica combina e resulta da racionalização de particularidades técnicas e do sinergismo destas três abordagens, buscando agregar suas vantagens e minimizar as suas desvantagens.

  16. ALTERNATIVE TECHNIQUE FOR CHOLECYSTECTOMY COMPARABLE TO SINGLE PORT.

    PubMed

    Sabbag, Carlos; Blitzckow, Ana

    2017-01-01

    With the advancement of laparoscopic surgery, new techniques have been proposed and disseminated in order to reduce the surgical aggression and get better cosmetic results. To present alternative technique for videocholecystectomy comparable to single port technique using conventional material for laparoscopic surgery. Introduction of laparoscopic devices using two incisions; gallbladder traction with thread, exposition of Calot triangle, and ligature of cystic pedicle with polymer clips. Nine operations were carried out with this method, without complications and no increase in operative time, being compared to conventional videocholecistectomy, however vastly superior in aesthetic results. The technique is feasible, reproducible, showing benefits to patient´s safety. Com o avanço da cirurgia laparoscópica, novas técnicas têm sido propostas e difundidas com o objetivo de diminuir a agressão cirúrgica e obter melhores resultados estéticos. Apresentar técnica alternativa para videocolecistectomia similar à técnica de single port, contudo utilizando material convencional para cirurgia laparoscópica. Procedimento de videocolecistectomia com uso de duas incisões, exposição do trígono de Calot por tração da vesícula biliar com fio e ligadura dos elementos do hilo cístico com clipes de polímero. Foram realizadas nove operações com esse método, não se observando complicações e nem aumento do tempo operatório em relação à videocolecistectomia convencional, contudo com resultado estético grandemente superior. A técnica é factível, reprodutível e mostra benefícios e segurança ao paciente.

  17. THE ROLE OF METABOLIC SURGERY FOR PATIENTS WITH OBESITY GRADE I ANDCLINICALLY UNCONTROLLED TYPE 2 DIABETES.

    PubMed

    Campos, Josemberg; Ramos, Almino; Szego, Thomaz; Zilberstein, Bruno; Feitosa, Heládio; Cohen, Ricardo

    2016-07-07

    Metabolic Risk Score defined by the surgical societies. Roux-en-Y gastric bypass (RYGB), because of its well known safety and efficacy and longer follow-up studies, is the main surgical technique indicated for patients eligible for surgery through the Metabolic Risk Score. The vertical sleeve gastrectomy may be considered if there is an absolute contraindication for the RYGB. T2DM patients should be evaluated by the multiprofessional team that will assess surgical eligibility, preoperative work up, follow up and long term monitoring for micro and macrovascular complications. Mesmo considerando o avanço do tratamento clínico ocorrido nos últimos 20 anos, com novos e mais eficientes medicamentos, os dados ainda são desanimadores quanto ao controle da obesidade e da diabete melito tipo 2(DMT2),com grande parcela de doentes em tratamento clínico ficando fora da meta desejada de controle. Apresentar proposta de Escore de Risco Metabólico para melhor orientar a indicação cirúrgica do diabete em pacientes com índice de massa corpórea (IMC) mais baixo nos quais o uso de procedimento cirúrgico para obesidade ainda é controverso. Foi realizada pesquisa nas bases de dados PubMed, Medline, PubMed Central, Scielo e Lilacs entre 2003-2015 correlacionando os descritores:cirurgia metabólica, obesidade e diabete melito tipo 2. Adicionalmente, representantes das sociedades envolvidas emitiram opiniões em pontos nos quais não existia na literatura trabalhos com graus de evidência elevados. Foram encontrados 45 artigos relacionadosque foram analisados pelos critérios da medicina baseada em evidências.As opiniões agrupadas procuraram responder as seguintes questões: Porque cirurgia metabólica e não bariátrica?;Mecanismos envolvidos no controle glicêmico; IMC como critério isolado de indicação cirúrgica para o DMT2 não controlado; Resultados de estudos de cirurgia metabólica em IMC<35 kg/m2; Segurança da cirurgia metabólica em pacientes com IMC<35 kg/m2; Efeitos

  18. THE ROLE OF METABOLIC SURGERY FOR PATIENTS WITH OBESITY GRADE I AND TYPE 2 DIABETES NOT CONTROLLED CLINICALLY.

    PubMed

    Campos, Josemberg; Ramos, Almino; Szego, Thomaz; Zilberstein, Bruno; Feitosa, Heládio; Cohen, Ricardo

    Metabolic Risk Score defined by the surgical societies. Roux-en-Y gastric bypass (RYGB), because of its well known safety and efficacy and longer follow-up studies, is the main surgical technique indicated for patients eligible for surgery through the Metabolic Risk Score. The vertical sleeve gastrectomy may be considered if there is an absolute contraindication for the RYGB. T2DM patients should be evaluated by the multiprofessional team that will assess surgical eligibility, preoperative work up, follow up and long term monitoring for micro and macrovascular complications. Mesmo considerando o avanço do tratamento clínico ocorrido nos últimos 20 anos, com novos e mais eficientes medicamentos, os dados ainda são desanimadores quanto ao controle da obesidade e da diabete melito tipo 2 (DMT2),com grande parcela de doentes em tratamento clínico ficando fora da meta desejada de controle. Apresentar proposta de Escore de Risco Metabólico para melhor orientar a indicação cirúrgica do diabete em pacientes com índice de massa corpórea (IMC) mais baixo nos quais o uso de procedimento cirúrgico para obesidade ainda é controverso. Foi realizada pesquisa nas bases de dados Pubmed, Medline, Pubmed Central, Scielo e Lilacs entre 2003-2015 correlacionando os descritores:cirurgia metabólica, obesidade e diabete melito tipo 2. Adicionalmente, representantes das sociedades envolvidas emitiram opiniões em pontos nos quais não existia na literatura trabalhos com graus de evidência elevados. Foram encontrados 45 artigos relacionados que foram analisados pelos critérios da medicina baseada em evidências. As opiniões agrupadas procuraram responder as seguintes questões: Porque cirurgia metabólica e não bariátrica?; Mecanismos envolvidos no controle glicêmico; IMC como critério isolado de indicação cirúrgica para o DMT2 não controlado; Resultados de estudos de cirurgia metabólica em IMC<35 kg/m2; Segurança da cirurgia metabólica em pacientes com IMC<35 kg/m2

  19. ER Ursae Majoris: A dwarf nova with surprises

    NASA Astrophysics Data System (ADS)

    de Miguel, Enrique; Patterson, Joe; Kemp, Jonathan; Stein, William; Roberts, George; Campbell, T.; Hambsch, Franz-J.; Krajci, Tom; Dvorak, Shawn; Koff, Robert A.; Morelle, Etienne; Potter, Michael; Cejudo, David; Brady, Steve; Menzies, Kenneth

    2012-05-01

    ER Ursae Majoris is a relatively bright member of the SU UMa-type dwarf novae that undergoes frequent eruptions of amplitude ~2 mag every ~4 d. In addition to these ordinary dwarf-nova outbursts, ER UMa shows brighter eruptions (superoutbursts) lasting ~20 d with a recurrence time of ~44 d. As other members of the SU UMa class, ER UMa displays a characteristic periodic modulation (superhumps) in its light curve during the course of a superoutburst, the period being a few percent longer than the orbital period of the underlying binary system. A routine photometric patrol of ER UMa during its January 2011superoutburst became much more interesting after noticing the presence of an additional modulation in its light curve, with a period slightly shorter than the orbital period. Similar photometric waves (known as negative superhumps) have already been observed in other cataclysmic variables, mainly in nova-like systems, but only in a small handful of SU UMa-type stars during quiescence, and never before during a superoutburst. We report in this communication the results of a worldwide photometric campaign that was orchestrated right after the discovery of negative superhumps in ER UMa, and provide a thorough analysis of the data obtained from more than 10 stations of the Center of Backyard Astrophysics (CBA) network, which include more than 1000 hours of photometric data over a 4-month baseline on 2011, and a similar (still in progress) dense coverage in 2012.

  20. Anatomy of Ursa Majoris

    NASA Astrophysics Data System (ADS)

    Karachentsev, I. D.; Nasonova, O. G.; Courtois, H. M.

    2013-03-01

    A nearby friable cloud in Ursa Majoris contains 270 galaxies with radial velocities 500 < VLG < 1500 km s-1 inside the area of RA = [11^h. 0, 13^h. 0] and Dec. = [ + 40°, +60°]. At present, 97 galaxies of them have individual distance estimates. We use these data to clarify the structure and kinematics of the UMa complex. According to Makarov & Karachentsev, most of the UMa galaxies belong to seven bound groups, which have the following median parameters: velocity dispersion of 58 km s-1, harmonic projected radius of 300 kpc, virial mass of 2 × 1012 M⊙ and virial mass-to-K-band luminosity ratio of 27 M⊙/L⊙. Almost a half of the UMa cloud population are gas-rich dwarfs (Ir, Im, BCD) with active star formation seen in the GALEX UV-survey. The UMa groups reside within 15-19 Mpc from us, being just at the same distance as the Virgo cluster. The total virial mass of the UMa groups is 4 × 1013 M⊙, yielding the average density of dark matter in the UMa cloud to be Ωm = 0.08, i.e. a factor of 3 lower than the cosmic average. This is despite the fact that the UMa cloud resides in a region of the Universe that is an apparent overdensity. A possible explanation for this is that most mass in the Universe lies in the empty space between clusters. Herewith, the mean distances and velocities of the UMa groups follow nearly undisturbed Hubble flow without a sign of the `Z-wave' effect caused by infall towards a massive attractor. This constrains the total amount of dark matter between the UMa groups within the cloud volume.

  1. UX Ursae Majoris as a SW Sex star

    NASA Astrophysics Data System (ADS)

    Neustroev, V. V.; Suleimanov, V. F.; Borisov, N. V.; Belyakov, K. V.; Shearer, A.

    2010-11-01

    We present an analysis of time-resolved, medium resolution optical spectroscopic observations of UX UMa in the blue (3920-5250 A˚) and red (6100-7200 A˚) wavelength ranges in April 1999 and March 2008, respectively. UX UMa has been in different states during those observations. Doppler tomography method was used to accretion disc structure investigation in both states. During the observations in 1999, UX UMa showed many of the defining properties of the SW Sex stars. However, all these features almost completely disappeared in 2008. We have also estimated the radial velocity semi-amplitude K1.

  2. Pre-treatment with dexamethasone attenuates experimental ventilator-induced lung injury.

    PubMed

    Reis, Fernando Fonseca Dos; Reboredo, Maycon de Moura; Lucinda, Leda Marília Fonseca; Bianchi, Aydra Mendes Almeida; Rabelo, Maria Aparecida Esteves; Fonseca, Lídia Maria Carneiro da; Oliveira, Júlio César Abreu de; Pinheiro, Bruno Valle

    2016-01-01

    To evaluate the effects that administering dexamethasone before the induction of ventilator-induced lung injury (VILI) has on the temporal evolution of that injury. Wistar rats were allocated to one of three groups: pre-VILI administration of dexamethasone (dexamethasone group); pre-VILI administration of saline (control group); or ventilation only (sham group). The VILI was induced by ventilation at a high tidal volume. Animals in the dexamethasone and control groups were euthanized at 0, 4, 24, and 168 h after VILI induction. We analyzed arterial blood gases, lung edema, cell counts (total and differential) in the BAL fluid, and lung histology. At 0, 4, and 24 h after VILI induction, acute lung injury (ALI) scores were higher in the control group than in the sham group (p < 0.05). Administration of dexamethasone prior to VILI induction decreased the severity of the lung injury. At 4 h and 24 h after induction, the ALI score in the dexamethasone group was not significantly different from that observed for the sham group and was lower than that observed for the control group (p < 0.05). Neutrophil counts in BAL fluid were increased in the control and dexamethasone groups, peaking at 4 h after VILI induction (p < 0.05). However, the neutrophil counts were lower in the dexamethasone group than in the control group at 4 h and 24 h after induction (p < 0.05). Pre-treatment with dexamethasone also prevented the post-induction oxygenation impairment seen in the control group. Administration of dexamethasone prior to VILI induction attenuates the effects of the injury in Wistar rats. The molecular mechanisms of such injury and the possible clinical role of corticosteroids in VILI have yet to be elucidated. Avaliar os efeitos da administração de dexametasona antes da indução de lesão pulmonar induzida por ventilação mecânica (LPIVM) na evolução temporal dessa lesão. Ratos Wistar foram alocados em um dos três grupos: administração de dexametasona pr

  3. 76 FR 75470 - Drivers of CMVs: Restricting the Use of Cellular Phones

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-02

    ... Materials Safety Administration PU Power Unit UMA United Motorcoach Association VTTI Virginia Tech... transportation, highway safety, utility providers, waste haulers, concrete manufacturers, and food suppliers. In... Food Association, Southern Company, and the State of New York Department of Motor Vehicles...

  4. Relocation of the 146th Tactical Airlift Wing of the California Air National Guard

    DTIC Science & Technology

    1985-02-01

    jastrum densifolium 0 Blue Mantle Polygonaceae - Buckwheat Family Eriogonum elumatella I Flat-Top Eriogonum mohavense I Mohave Buckwheat Olanaceae...Desert iguana Cnemidophorous jizri Western whiptail (observed) Callisaurus draconoides Zebra-tailed lizard Crotaphytus collaris Collared lizard Uma

  5. Synthesis of polymer materials by low energy electron beam. IV. EB-polymerized urethane-acrylate, -methacrylate and -acrylamide

    NASA Astrophysics Data System (ADS)

    Ando, Masayuki; Uryu, Toshiyuki

    The structure and properties before and after electron beam (EB) irradiation were investigated using urethane prepolymers with different terminal groups of 2-hydroxyethyl acrylate (HEA), 2-hydroxyethyl methacrylate (HEMA) and N-hydroxymethyl acrylamide (HMAAm). The prepolymers were synthesized by reaction of HEA, HEMA and HMAAm with the isocyanate-capped intermediate, which was obtained by reaction of poly(butylene adipate)diol (PBAD) with 4,4'-diphenylmethane diisocyanate. The resulting urethane-acrylate (UA-251M), -methacrylate (UMA-251M) and -acrylamide (UNAA-251M) had the crystallinity arising from PBAD moieties, and UA-251M and UMA-251M had higher crystallinity than UNAA-251M. IR results indicated that UNAA-251M was larger in the fraction of free NH stretching absorption than UA-251M and UMA-251M regardless of the number of NH group per a molecule. Accordingly, it was assumed that the difference in crystallinity was attributed to the polarity of terminal group. Hence, the rate of gel formation for UA-251M and UMA-251M was higher than that of UNAA-251M. The crystallinity based on PBAD of the prepolymers was remained also after EB irradiation. Spherulitic texture was observed on the EB-polymerized gel film surfaces for UA-251M and UMA-251M, while it was almost destroyed for UNAA-251M. Mechanical properties of UA-251M and UMA-251M gel films were much superior to those of UNAA-251M gel film according to the phase structure. Especially, UMA-251M gel film represented most excellent mechanical properties. Schematic models of the phase structure for UA-251M, UMA-251M and UNAA-251M were suggested from all experimental results.

  6. [Long-term home oxygen therapy in children: evidences and open issues].

    PubMed

    Oliveira, Lia; Coelho, Joana; Ferreira, Rosário; Nunes, Teresa; Saianda, Ana; Pereira, Luisa; Bandeira, Teresa

    2014-01-01

    IntroduçÉo: Oxigenoterapia domiciliária de longa duraçÉo está indicada em doentes com hipoxémia crónica. Pretendemos descrever a populaçÉo em programa de oxigenoterapia domiciliária de longa duraçÉo acompanhada numa Unidade de Pneumologia Pediátrica de Hospital Terciário entre 2003-2012 e comparar com revisÉo de 1991-2000; verificar conformidade com orientações nacionais e internacionais, refletindo sobre necessidade de orientações nacionais especificamente pediátricas, inexistentes em Portugal.Material e Métodos: Estudo retrospetivo, descritivo e comparativo por consulta de processo clínico. Pesquisa de orientações sobre oxigenoterapia em idade pediátrica.Resultados: Incluímos 86 doentes (59,3% rapazes). A idade mediana de início da oxigenoterapia foi 0,0 (0,0-216,0) meses e a duraçÉo mediana de 15,0 (3,0-223,0) meses. O diagnóstico mais frequente foi displasia broncopulmonar (53,5%), seguindo-se bronquiolite obliterante (14,0%), doença neurológica (10,5%), fibrose quística (8,1%), síndromes polimalformativas (5,8%), doença de células falciformes (3,5%), outras doenças pulmonares neonatais (2,3%) e doenças pulmonares intersticiais (2,3%). Mantêm acompanhamento 53 (61,6%) doentes, 38 mantendo oxigenoterapia; 12 (13,9%) faleceram. O tempo mediano de seguimento foi 39,5 (1,0-246,0) meses, mínimo nas outras doenças pulmonares neonatais e máximo na fibrose quística. Comparativamente ao estudo anterior revela aumento relativo dos lactentes com bronquiolite obliterante e displasia broncopulmonar, aumento da duraçÉo nestes últimos e inclusÉode doentes neurológicos e hematológicos.DiscussÉo: A prescriçÉo de oxigenoterapia domiciliária de longa duraçÉo em pediatria ocorre sobretudo em doenças específicas dos lactentes e idade pré-escolar. Doentes neurológicos e hematológicos sÉo novos grupos de prescriçÉo, à semelhança da literatura internacional.ConclusÉo: O conhecimento da realidade nacional e orienta

  7. Optimization of Ionic Liquid Based Simultaneous Ultrasonic- and Microwave-Assisted Extraction of Rutin and Quercetin from Leaves of Velvetleaf (Abutilon theophrasti) by Response Surface Methodology

    PubMed Central

    Zhao, Chunjian; Lu, Zhicheng; He, Xin; Li, Zhao; Shi, Kunming; Yang, Lei; Fu, Yujie; Zu, Yuangang

    2014-01-01

    An ionic liquids based simultaneous ultrasonic and microwave assisted extraction (ILs-UMAE) method has been proposed for the extraction of rutin (RU), quercetin (QU), from velvetleaf leaves. The influential parameters of the ILs-UMAE were optimized by the single factor and the central composite design (CCD) experiments. A 2.00 M 1-butyl-3-methylimidazolium bromide ([C4mim]Br) was used as the experimental ionic liquid, extraction temperature 60°C, extraction time 12 min, liquid-solid ratio 32 mL/g, microwave power of 534 W, and a fixed ultrasonic power of 50 W. Compared to conventional heating reflux extraction (HRE), the RU and QU extraction yields obtained by ILs-UMAE were, respectively, 5.49 mg/g and 0.27 mg/g, which increased, respectively, 2.01-fold and 2.34-fold with the recoveries that were in the range of 97.62–102.36% for RU and 97.33–102.21% for QU with RSDs lower than 3.2% under the optimized UMAE conditions. In addition, the shorter extraction time was used in ILs-UMAE, compared with HRE. Therefore, ILs-UMAE was a rapid and an efficient method for the extraction of RU and QU from the leaves of velvetleaf. PMID:25243207

  8. [VITAMIN D AND CHRONIC LUNG COLONIZATION IN PEDIATRIC AND YOUNG ADULTS CYSTIC FIBROSIS PATIENTS].

    PubMed

    González Jiménez, David; Muñoz Codoceo, Rosana; Garriga García, María; Molina Arias, Manuel; Alvarez Beltran, Marina; García Romero, Ruth; Martínez Costa, Cecilia; Meavilla Olivas, Silvia María; Peña Quintana, Luis; Gallego Gutierrez, Silvia; Marugan de Miguelsanz, Jose Manuel; Suarez Cortina, Lucrecia; Castejón Ponce, Esperanza Natividad; Leis Trabazo, Rosaura; Martín Cruz, Fayna; Díaz Martín, Juan Jose; Bousoño García, Carlos

    2015-10-01

    Introducción y objetivos: conocer la situación en la que se encuentran los pacientes con fibrosis quística en relación con sus niveles de vitamina D y su asociación con las colonizaciones pulmonares crónicas. Material y métodos: estudio multicéntrico transversal. Participaron 12 hospitales nacionales. De noviembre a abril del 2012 al 2014 se incluyeron 377 pacientes con fibrosis quística. Se consideraron insuficientes niveles de vitamina D < 30 ng/ml. Presentar al menos dos cultivos positivos en el último año fue considerado un criterio de colonización crónica. Resultados: los pacientes tenían una mediana de edad de 8,9 años (2 meses—20 años). Un 65% presentaban niveles insuficientes de vitamina D. Se observó una correlación inversa entre edad y niveles de vitamina D (r = -0,20 p < 0,001). Los diagnosticados por cribado eran más jóvenes y tenían niveles de vitamina D más altos. Los niveles de vitamina D presentaron una correlación inversa con el número de colonizaciones pulmonares (r = -0,16 p = 0,0015). Ajustando por edad, función pancreática y diagnóstico mediante cribado, la colonización por S. Aureus en menores de seis años y por Pseudomonas sp. en los mayores de esa edad, incrementaban el riesgo de presentar niveles insuficientes de vitamina D: OR 3,17 (IC95% 1,32-7,61) (p=0,010) y OR 3,77 (IC95% 1,37- 10,37)(p = 0,010), respectivamente. Conclusiones: a pesar de una suplementación adecuada, más de la mitad de nuestros pacientes no alcanzan niveles óptimos de vitamina D. La colonización crónica por Pseudomonas sp. en escolares y adolescentes y por S. Aureus en lactantes y preescolares se asocia de forma independiente con la deficiencia de vitamina D.

  9. MINIMALLY INVASIVE SURGERY FOR GASTRIC CANCER: TIME TO CHANGE THE PARADIGM.

    PubMed

    Barchi, Leandro Cardoso; Jacob, Carlos Eduardos; Bresciani, Cláudio José Caldas; Yagi, Osmar Kenji; Mucerino, Donato Roberto; Lopasso, Fábio Pinatel; Mester, Marcelo; Ribeiro-Júnior, Ulysses; Dias, André Roncon; Ramos, Marcus Fernando Kodama Pertille; Cecconello, Ivan; Zilberstein, Bruno

    2016-01-01

    Minimally invasive surgery widely used to treat benign disorders of the digestive system, has become the focus of intense study in recent years in the field of surgical oncology. Since then, the experience with this kind of approach has grown, aiming to provide the same oncological outcomes and survival to conventional surgery. Regarding gastric cancer, surgery is still considered the only curative treatment, considering the extent of resection and lymphadenectomy performed. Conventional surgery remains the main modality performed worldwide. Notwithstanding, the role of the minimally invasive access is yet to be clarified. To evaluate and summarize the current status of minimally invasive resection of gastric cancer. A literature review was performed using Medline/PubMed, Cochrane Library and SciELO with the following headings: gastric cancer, minimally invasive surgery, robotic gastrectomy, laparoscopic gastrectomy, stomach cancer. The language used for the research was English. 28 articles were considered, including randomized controlled trials, meta-analyzes, prospective and retrospective cohort studies. Minimally invasive gastrectomy may be considered as a technical option in the treatment of early gastric cancer. As for advanced cancer, recent studies have demonstrated the safety and feasibility of the laparoscopic approach. Robotic gastrectomy will probably improve outcomes obtained with laparoscopy. However, high cost is still a barrier to its use on a large scale. A cirurgia minimamente invasiva amplamente usada para tratar doenças benignas do aparelho digestivo, tornou-se o foco de intenso estudo nos últimos anos no campo da oncologia cirúrgica. Desde então, a experiência com este tipo de abordagem tem crescido, com o objetivo de fornecer os mesmos resultados oncológicos e sobrevivência à cirurgia convencional. Em relação ao câncer gástrico, o tratamento cirúrgico ainda é considerado o único tratamento curativo, considerando a extensão da

  10. Impact of respiratory therapy in vital capacity and functionality of patients undergoing abdominal surgery.

    PubMed

    Fernandes, Shanlley Cristina da Silva; Santos, Rafaella Souza Dos; Giovanetti, Erica Albanez; Taniguchi, Corinne; Silva, Cilene Saghabi de Medeiros; Eid, Raquel Afonso Caserta; Timenetsky, Karina Tavares; Carnieli-Cazati, Denise

    2016-01-01

    To evaluate the vital capacity after two chest therapy techniques in patients undergoing abdominal surgical. A prospective randomized study carried out with patients admitted to the Intensive Care Unit after abdominal surgery. We checked vital capacity, muscular strength using the Medical Research Council scale, and functionality with the Functional Independence Measure the first time the patient was breathing spontaneously (D1), and also upon discharge from the Intensive Care Unit (Ddis). Between D1 and Ddis, respiratory therapy was carried out according to the randomized group. We included 38 patients, 20 randomized to Positive Intermittent Pressure Group and 18 to Volumetric Incentive Spirometer Group. There was no significant gain related to vital capacity of D1 and Ddis of Positive Intermittent Pressure Group (mean 1,410mL±547.2 versus 1,809mL±692.3; p=0.979), as in the Volumetric Incentive Spirometer Group (1,408.3mL±419.1 versus 1,838.8mL±621.3; p=0.889). We observed a significant improvement in vital capacity in D1 (p<0.001) and Ddis (p<0.001) and in the Functional Independence Measure (p<0.001) after respiratory therapy. The vital capacity improvement was not associated with gain of muscle strength. Chest therapy, with positive pressure and volumetric incentive spirometer, was effective in improving vital capacity of patients submitted to abdominal surgery. Avaliar a capacidade vital comparando duas técnicas de fisioterapia respiratória em pacientes submetidos à cirurgia abdominal. Estudo prospectivo e randomizado realizado com pacientes admitidos em Unidade de Terapia Intensiva após cirurgia abdominal. Verificamos a capacidade vital, a força muscular por meio da escala do Medical Research Council e funcionalidade pela Medida de Independência Funcional no primeiro momento em que o paciente encontrava-se em respiração espontânea (D1) e na alta da Unidade de Terapia Intensiva (Dalta). Entre D1 e Dalta, foi realizada a fisioterapia respirat

  11. NUTRITIONAL ASPECTS AND THE USE OF NUTRITIONAL SUPPLEMENTS BY WOMEN WHO UNDERWENT GASTRIC BYPASS.

    PubMed

    Trindade, Elisangela Mara; Gebara, Telma Souza E Silva; Cambi, Maria Paula Carlini; Baretta, Giorgio Alfredo Pedroso

    2017-01-01

    Bariatric surgery is deemed one of the most effective procedures for the treatment of obesity and it aims at the reduction and maintenance of weight loss in long term, as the control of the related comorbidities. Quantify the occurrence of alterations of the gastrointestinal tract, suggestive signs of nutritional deficiencies and the use of supplements in a group of women undergoing bariatric surgery. The sample consisted of women aged 20-65 years submitted to Roux-en-Y gastric bypass with monitoring equal to or higher than 24 months. For the qualitative analysis, the Feeding Frequency Questionnaire was used. In the postoperative period, alopecia was the most reported (79.3%), followed by changes in the texture of the nails, both considered predictive of nutritional deficiencies. Changes in the gastrointestinal tract were described in 86.2%, and episodes of dumping were reported in 65.5%. Qualitative analysis has shown reduced daily consumption of sources of animal and plant proteins. After bariatric surgery can occur flatulence, vomiting and dumping syndrome as the most frequent representative symptoms of digestive functional disorders. Alopecia and nail changes are the most important signs of nutritional deficiency. The use of dietary supplements in the postoperative period is scarce and sporadic. A cirurgia bariátrica é considerada um dos procedimentos mais eficazes para tratamento da obesidade e objetiva a redução e manutenção da perda de peso em longo prazo, assim como, o controle das comorbidades associadas. Quantificar a ocorrência de alterações funcionais do trato gastrointestinal, sinais sugestivos de carências nutricionais e o uso de suplementos em um grupo de mulheres submetidas à cirurgia bariátrica. A amostra foi constituída por mulheres com idades entre 20-65 anos submetidas ao bypass gástrico em Y-de-Roux com seguimento igual ou superior a 24 meses. Para análise qualitativa foi utilizado o Questionário de Frequência Alimentar. No per

  12. Predictive factors of atrial fibrillation after coronary artery bypass grafting.

    PubMed

    Folla, Cynthia de Oliveira; Melo, Cinthia Cristina de Santana; Silva, Rita de Cassia Gengo E

    2016-01-01

    To analyze predictive demographic and perioperative variables of postoperative atrial fibrillation in patients who underwent exclusively coronary artery bypass grafting. This was a retrospective cohort. We randomly selected 105 medical records of patients who underwent exclusively coronary artery bypass grafting in 2014. Demographic, clinical (preoperative and immediate postoperative) data and related with surgical procedure were collected from medical records. The occurrence of postoperative atrial fibrillation was considered until the third day after the surgery. Variables were analyzed using descriptive and inferential statistics. To identify predictive factors of postoperative atrial fibrillation we used a decision tree model with Classification and Regression Trees algorithm. Atrial fibrillation incidence was 19.0% (n=20). Patients with left atrial >40.5mm and aged >64.5 years were more likely to develop the arrhythmia during the post-surgical period. Left atrial diameter and advanced age were predictive factors of atrial fibrillation in patients who underwent exclusively coronary artery bypass grafting. Analisar as variáveis demográficas e perioperatórias preditivas de fibrilação atrial pós-operatória em pacientes brasileiros submetidos exclusivamente à cirurgia de revascularização do miocárdio. Trata-se de coorte retrospectiva. A amostra foi constituída de 105 prontuários de pacientes submetidos exclusivamente à revascularização do miocárdio no ano de 2014, selecionados aleatoriamente. Dados demográficos, clínicos (préoperatórios e do pós-operatório imediato) e relacionados ao procedimento cirúrgico foram coletados por meio de consulta ao prontuário. A ocorrência de fibrilação atrial no pós-operatório foi considerada até o terceiro dia após a cirurgia. As variáveis foram analisadas por estatística descritiva e inferencial. Para identificar os fatores preditivos de fibrilação atrial no pós-operatório, utilizou-se um

  13. Assessment of laparoscopic skills of Gynecology and Obstetrics residents after a training program.

    PubMed

    Fernandes, Carla Ferreira Kikuchi; Ruano, José Maria Cordeiro; Kati, Lea Mina; Noguti, Alberto Sinhiti; Girão, Manoel João Batista Castello; Sartori, Marair Gracio Ferreira

    2016-01-01

    To evaluate laparoscopic skills of third-year Gynecology and Obstetrics residents after training at a training and surgical experimentation center. Use of a prospective questionnaire analyzing demographic data, medical residency, skills, competences, and training in a box trainer and in pigs. After the training, there was significant improvement in laparoscopic skills according to the residents (before 1.3/after 2.7; p=0.000) and preceptors (before 2.1/after 4.8; p=0.000). There was also significant improvement in the feeling of competence in surgeries with level 1 and 2 of difficulty. All residents approved the training. The training was distributed into 12 hours in the box trainer and 20 hours in animals, and led to better laparoscopic skills and a feeling of more surgical competence in laparoscopic surgery levels 1 and 2. Avaliar a habilidade laparoscópica dos residentes do terceiro ano de residência médica em Ginecologia e Obstetrícia após treinamento em um centro de treinamento e experimentação cirúrgica. Aplicação de questionário de forma prospectiva analisando dados demográficos, da residência médica, da habilidade, da competência e do treinamento em caixa preta e em porcas. Após o treinamento, houve melhora da habilidade em laparoscopia de forma significativa na avaliação dos residentes (antes 1,3/depois 2,7; p=0,000) e preceptores (antes 2,1/depois 4,8; p=0,000). Houve melhora significativa na sensação de competência em cirurgias de níveis 1 e 2 de dificuldade. Todos os residentes aprovaram o treinamento. O treinamento dividido em 12 horas de caixa preta e 20 horas em animais trouxe melhora na habilidade em laparoscopia e na sensação de melhora na competência cirúrgica em cirurgias laparoscópicas de níveis 1 e 2.

  14. Sciatic nerve high division: two different anatomical variants.

    PubMed

    Pais, Diogo; Casal, Diogo; Bettencourt Pires, Maria Alexandre; Furtado, Andrea; Bilhim, Tiago; Angélica-Almeida, Maria; Goyri-O'Neill, João

    2013-01-01

    Introdução: As variações do nervo isquiático são relativamente comuns e frequentemente muito significativas clinicamente. O objetivo deste trabalho é apresentar duas destas variações e discutir algumas das suas implicações clínicas.Material e Métodos: Três cadáveres caucasianos sem história prévia de trauma ou cirurgia no membro inferior foram dissecados, apresentando variações anatómicas do nervo isquiático.Resultados: Em todos os casos o nervo isquiático dividia-se acima da fossa poplítea.Em dois casos (cadáveres1 e 2) a terminação deste nervo ocorria na porção inferior da região glútea nos seus dois ramos terminais: os nervos fibular comum e tibial. Num outro caso (cadáver 3), o nervo isquiático dividia-se ainda dentro da bacia antes de percorrer a incisura isquiática maior. Neste caso, o nervo fibular comum saía da pelve acima do músculo piriforme, passando em seguida ao longo de sua face posterior, enquanto que o nervo tibial corria profundamente ao músculo piriforme.Discussão: De acordo com a literatura, a variante anatómica descrita no cadáver 3 é considerada relativamente rara. Esta variante poderá predispor a síndromes compressivos do nervo isquiático. A divisão alta do nervo isquiático, de que são exemplos os cadáveres 1 e 2, pode comprometer a eficácia dos bloqueios anestésicos ao nível da fossa poplítea.Conclusão: As variantes anatómicas associadas à divisão alta do nervo isquiático devem sempre ser tidas em consideração porserem relativamente comuns e terem importantes implicações clínicas, nomeadamente nas áreas de Anestesiologia, Neurologia, Medicina do Desporto e Cirurgia.

  15. Customized acrylic implants for reconstruction of extensive skull defects: an exception approach for selected patients.

    PubMed

    Silva, Rafael Denadai Pigozzi DA; Raposo-Amaral, Cesar Augusto; Guidi, Marcelo Campos; Raposo-Amaral, Cassio Eduardo; Buzzo, Celso Luiz

    2017-01-01

    to present our experience in the surgical treatment of extensive skullcap defects with customized acrylic implants. we conducted a retrospective analysis of patients with extensive skull defects undergoing acrylic cranioplasties between 2004 and 2013. We carefully selected all patients and classified surgical results based on three scales (craniofacial esthetics, improvement of facial symmetry and need for additional surgery). fifteen patients underwent cranioplasty with intraoperative acrylic implants, whether manually customized (46.67%) or made with prototyped three-dimensional biomodels (53.33%). There were two (13.33%) complications (one infection with implant withdrawal and one seroma). We considered the craniofacial aesthetics excellent (50%), the degree of improvement of craniofacial symmetry satisfactory (57.14%), and the overall mean of surgical results according to the need for new surgeries was 1.5±0.52. cranioplasties of patients with extensive skullcap defects should obey careful and predetermined criteria, both for selection and for the acrylic implant customization method. apresentar nossa experiência no tratamento cirúrgico dos defeitos extensos da calota craniana com implantes de acrílico customizados. análise retrospectiva de pacientes com defeitos extensos da calota craniana submetidos à cranioplastias com acrílico entre 2004 e 2013. Todos os pacientes foram criteriosamente selecionados e os resultados cirúrgicos foram classificados com base em três escalas (estética craniofacial, melhora da simetria facial e necessidade de cirurgia adicional). Quinze pacientes foram submetidos à cranioplastia com implantes de acrílico customizados manualmente no intraoperatório (46,67%) e confeccionados com base em biomodelos tridimensionais prototipados (53,33%). Mesmo respeitando critérios de seleção, houve duas (13,33%) complicações (infecção com retirada do implante e seroma). A estética craniofacial foi considerada excelente (50%), o

  16. Nurses in post-operative heart surgery: professional competencies and organization strategies.

    PubMed

    Santos, Ana Paula Azevedo; Camelo, Silvia Helena Henriques; Santos, Fabiana Cristina Dos; Leal, Laura Andrian; Silva, Beatriz Regina da

    2016-01-01

    To analyze nurses' competencies with regard to their work in post-operative heart surgery and the strategies implemented to mobilize these competencies. This was an exploratory study with a qualitative approach and a methodological design of collective case study. It was carried out in three post-operative heart surgery units, consisting of 18 nurses. Direct observation and semi-structured interviews were employed to collect data. Data were construed through thematic analysis. nine competencies were found, as follows: theoretical-practical knowledge; high-complexity nursing care; nursing supervision; leadership in nursing; decision making; conflict management; personnel management; material and financial resources management; and on-job continued education. Organizational and individual strategies were employed to develop and improve competencies such as regular offerings of courses and lectures, in addition to the individual pursuit for knowledge and improvement. the study is expected to lead future nurses and training centers to evaluate the need for furthur training required to work in cardiac units, and also the need for implementing programs aimed at developing the competencies of these professionals. Analisar as competências dos enfermeiros para atuarem no pós-operatório de cirurgia cardíaca e estratégias implementadas para a mobilização dessas competências. Estudo exploratório, com abordagem qualitativa e desenho metodológico estudo de caso coletivo. Foi realizado em três unidades pós-operatórias de cirurgias cardíacas, com 18 enfermeiros. Na coleta de dados utilizou-se observação direta e entrevista semiestruturada. Para interpretação dos dados optou-se pela análise temática. Foram identificadas nove competências, sendo: conhecimento teórico-prático, cuidados de enfermagem de alta complexidade, supervisão e liderança em enfermagem, tomada de decisão, gerenciamento de conflitos, de recursos humanos, materiais, financeiros e educa

  17. Myocardial revascularization: factors intervening in the reference and counter-reference in Primary Health Care.

    PubMed

    Cunha, Kamylla Santos da; Higashi, Giovana Dorneles Callegaro; Erdmann, Alacoque Lorenzini; Kahl, Carolina; Koerich, Cintia; Meirelles, Betina Hörner Schlindwein

    2016-01-01

    Understanding the factors that influence the reference and counter-reference process of people indicated/submitted to Myocardial Revascularization surgery in the Primary Health Care scenario. A qualitative research anchored in the Grounded Theory, totaling 41 participants subdivided into three groups (patients, health professionals and managers) in the Metropolitan and West Region of Santa Catarina. Two categories elucidate the intervening factors found, contrasting the potentialities and obstacles in (creating) the bond between people affected by cardiovascular diseases and primary health care for the reference process, highlighting weaknesses in the primary health care services provided, with failures in the counter-reference for people submitted to myocardial revascularization surgery. Strengthening the potentialities presented in this study is essential for the reference process of people affected by Cardiovascular Disease, as well as strategic actions focused on solving the evidenced obstacles which contribute to deficiencies in the referral and counter-referral process, thus impeding integral care in the health care network. Compreender os fatores que influenciam o processo de referência e contrarreferência da pessoa com indicação/submetida à Cirurgia de Revascularização Miocárdica no cenário da Atenção Primária à Saúde. Pesquisa qualitativa ancorada na Teoria Fundamentada nos Dados, totalizando 41 participantes subdivididos em três grupos (pacientes, profissionais de saúde e gestores) na Região Metropolitana e Região Oeste de Santa Catarina. Duas categorias elucidam os fatores interventores encontrados, Contrastando as potencialidades e entraves no vínculo da pessoa acometida por doenças cardiovasculares com a atenção primária à saúde para o processo de referência e Destacando fragilidades nos serviços disponibilizados na atenção primária à saúde, com insucessos da contrarreferência da pessoa submetida à cirurgia de

  18. Physical Parameter Study of Eight W Ursae Majoris-type Contact Binaries in NGC 188

    NASA Astrophysics Data System (ADS)

    Chen, Xiaodian; Deng, Licai; de Grijs, Richard; Zhang, Xiaobin; Xin, Yu; Wang, Kun; Luo, Changqing; Yan, Zhengzhou; Tian, Jianfeng; Sun, Jinjiang; Liu, Qili; Zhou, Qiang; Luo, Zhiquan

    2016-11-01

    We used the newly commissioned 50 cm Binocular Network telescope at Qinghai Station of Purple Mountain Observatory (Chinese Academy of Sciences) to observe the old open cluster NGC 188 in V and R as part of a search for variable objects. Our time-series data span a total of 36 days. Radial velocity and proper-motion selection resulted in a sample of 532 genuine cluster members. Isochrone fitting was applied to the cleaned cluster sequence, yielding a distance modulus of (m-M{)}V0 = 11.35+/- 0.10 {{mag}} and a total foreground reddening of E(V - R) = 0.062 ± 0.002 mag. Light-curve solutions were obtained for eight W Ursae Majoris eclipsing binary systems (W UMas), and their orbital parameters were estimated. Using the latter parameters, we estimate a distance to the W UMas that is independent of the host cluster’s physical properties. Based on combined fits to six of the W UMas (EP Cep, EQ Cep, ES Cep, V369 Cep, and—for the first time—V370 Cep and V782 Cep), we obtain an average distance modulus of (m-M{)}V0 = 11.31+/- 0.08 {{mag}}, which is comparable to that resulting from our isochrone fits. These six W UMas exhibit an obvious period-luminosity relation. We derive more accurate physical parameters for the W UMa systems and discuss their initial masses and ages. The former show that these W UMa systems have likely undergone angular momentum evolution within a convective envelope (W-type evolution). The ages of the W UMa systems agree well with the cluster’s age.

  19. Color Doppler monitoring of changes of utero-placental-fetal circulation in normal pregnancy and intrauterine growth retardation.

    PubMed

    Xu, J; Wen, L; Ma, T; Zhang, Y; Zhang, Q; Gao, S; Zhao, M; Wu, H; Hu, J

    1997-01-01

    The utero-placental-fetal circulation (UPFC) of 150 subjects during second and third trimester was examined by using color Doppler. Of them 89 were normal woman and 58 were patients with intrauterine growth retardation IUGR). Our results showed that UPFC was increased gradually during normal pregnant period. In IUGR patients it was revealed that TAV and Q of UmA, UmV and UtA decreased at 20th week of gestation, especially after 30th week. PI, RI and S/D ratio of UmA were increased, but TAV, Q of UmA and UmV were markly reduced, so was UtA. PI were increased, but the changes of RI, S/D ratio in UtA were not significant. Hemodynamical findings of UmA, UmV and UtA were abnormal in 92.53% of IUGR patients. Only 81.03% present abnormal S/D ratio of UmA (P < 0.01) and the difference was statistically significant. Maternal serum E3, HPL level in IUGR were significantly lower than that of the normal. 6KP level was reduced, TXB2/6KP ratio was significantly increased. TXB2/6KP ratio was markedly related with TAV, Q of UmA, UmV and UtA. Our results suggested that using color doppler ultrasound for examination of hemodynamical changes of UmA, UmV and UtA could revealed UPFC function directly. It is one of the best methods for monitoring IUGR and might be used for early diagnosis of IUGR. The main pathophysiological changes of IUGR were UPFC obstruction and placental disfunction.

  20. [Management of malignant vulvar tumors].

    PubMed

    Mahjoub, S; Ben Brahim, F; Ben Hmid, R; Zghal, D; Kallel, N; Sébai, N; Zouari, Faouzia

    2008-12-01

    Vulva anatomy--FIGO classification--Vulva tumors anatomopathology--Tretments of vulva cancers. Our stady is a retrospective, longitudinal and continuous one. It concerns 11 malignant vulva tumors whith were treated in the département "C" of the centre of maternity of Tunis. The period of stady is fifty four months (2002-2006). The aim of our study is to analyse the charactéristics of the vulva cancer and to compare our results to littérature. Mean age of our patients is 67 years old. They are all menaused. The principal signs are vulva tuméfaction in 72.7% of the cases, vulva prurit in 27.3% of the cases and genital bleeding in 27.3% of the cases. The mean period of consultation is of 14 months. We have ten cases of vulvar epidermoid carcinoma and one melanoma. The treatment was surgical in the eleven cases (10 total vulvectomy and one hemivulvectomy) They all benefited of an inguinal bilateral curage. The adjuvant radiotérapie was indicated in 3 cases. A patient was classed stage Ib of FIGO, 7 stage II, one stage III and one stage IVa. Nine patients are in remission, 3 are dead: 2 because of their cancer and one due to a pulmonar embolism. The survival of 6 month is 72.2%. The prevention of this cancer passes by the close follow of dystrophic states and viral pathologies of the vulva.

  1. [Thrombolysis in left mechanical prosthetic heart valve obstruction by thrombus. Following and results].

    PubMed

    Valencia-Sánchez, Jesús Salvador; Arriaga-Nava, Roberto

    2014-01-01

    INTRODUCCIÓN: la obstrucción de la válvula mecánica cardiaca izquierda por trombo es una complicación grave. Los factores relacionados con la mortalidad son clase funcional, tipo de prótesis valvular y urgencia de la cirugía. La trombólisis representa una opción terapéutica a la cirugía cardiaca. El objetivo de esta investigación fue analizar el papel de la trombólisis en el manejo de la válvula mecánica cardiaca izquierda obstruida por trombo. MÉTODOS: se estudiaron 22 casos consecutivos sometidos a trombólisis en el Hospital de Cardiología del Centro Médico Nacional Siglo XXI, bajo dos diferentes circunstancias: con edema agudo pulmonar y estado de choque en clase funcional IV y con clases funcionales I y II. Se realizó monitoreo clínico, ecocardiográfico y fluoroscopia.

  2. Use of GC/MS to identify chemical constituents and cytotoxic activity of the leaves of Phoradendron mucronatum and Phoradendron microphyllum (Viscaceae).

    PubMed

    Bastos, Isla V G A; Oliveira, Tatiane B DE; Rodrigues, Maria D; Militão, Gardênia C G; Silva, Teresinha G DA; Turatti, Izabel C C; Lopes, Norberto P; Melo, Sebastião J DE

    2017-01-01

    Phoradendron mucronatum and P. microphyllum are plants that found in tropical and subtropical areas, used in traditional medicine and popularly known as mistle-thrush. The aim of this study was to identify the chemical constituents of different leaf extracts from P. mucronatum and P. microphyllum and assess cytotoxic activity against strains from a human tumour cells. Extracts obtained with hexane, dichloromethane, chloroform and ethyl acetate from the leaves were analysed by gas chromatography coupled with mass spectrometry (GC-MS) and the cytotoxicity was assessed by the MTT method (bromide (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide)). The tested human tumour cells were NCI-H292 (human pulmonar mucoepidermoid carcinoma), MCF-7 (human breast adenocarcinoma) and HEp-2 (epidermoid carcinoma of the larynx). Analysis by GC/MS of the extracts from leaves of P. microphyllum and P. mucronatum detected 51 different compounds, such as alkaloids, diterpenes, triterpenes, sterols, alcohols, aldehydes, fatty acids and hydrocarbons. In the cytotoxic evaluation, hexane and ethyl acetate extracts from the leaves P. microphyllum inhibited cell growth of NCI-H292 strains (72.97%) and HEp-2 (87.53%), respectively. The extracts of P. mucronatum species showed an inhibitory effect towards NCI-H292 (83.19%/hexane), MCF-7 (88.69%/dichloromethane) and HEp-2 (93.40%/hexane). The extracts showed cytotoxic activity against the tested strains, especially the P. mucronatum, which presented the highest percentages of inhibition of cell growth.

  3. [Treatment with tuberculostatic drugs: compliance at a general hospital].

    PubMed

    Polo Friz, H; Kremer, L; Acosta, H; Abdala, O; Canova, S; Rojo, S; Roca, G; Daín, A

    1997-01-01

    The purpose of this study was to assess the compliance with tuberculostatic drugs treatment in a public hospital from Córdoba City and to establish the causes of noncompliance. All the patients to which treatment with tuberculostatic drugs was indicated from January 1991 up to December 1994 were included. 45 patients were included: 18 females (40%) and 29 males. Sixteen (35.6%) did not complete the time of treatment indicated. Nine (56.3%) abandoned the treatment 2 months after having initiated it. In the group that did not complete the treatment there was a higher percentage of female patients (62.5%) than in the group that did complete it (27.6%), p = 0.02. There were not statistically significant differences in age, percentages of pulmonar and extrapulmonar tuberculosis and months of treatment indicated between both groups. Thirty-six percent of the patients who abandoned the treatment referred having interrupted it due to their own negligency, knowing the risk of such behavior; 36% suffered side effects and did not come back to hospital; 21% referred having consulted another physician who indicated to interrupt the treatment without performing other tests; and 7% misunderstood the indications. It is concluded that in a general hospital from Córdoba City, the percentage of patients who abandoned tuberculostatic treatment is high. In most cases the cause was related to failures in the conduct of patients, physicians or both.

  4. [Benign pleural effusion caused by asbestos exposure].

    PubMed

    Vieira, J R; Alfarroba, E; Viegas, J; Freitas e Costa, M

    1992-05-01

    The Authors present the first case described among us of benign pleural effusion of an asbestotic origin. They stress the importance of thoracoscopy (pleuroscopy) in the diagnosis of this situation. Attention is drawn to the fact that asbestotic lesions and asbestotic bodies have been found in the lung and, in particular, in the parietal pleura as well. They emphasize the fact that exposure to asbestos was not realized by the patient, which made the clarification of the situation more difficult. It was a CT scan that showed the signs suggestive of exposure to asbestos which raised the diagnostic suspicion. They conclude that every patient with a pleural effusion must be thoroughly questioned about exposure to asbestos. Even if the exposure is accepted, they consider that one should proceed to a pleuro-pulmonar biopsy by thoracoscopy. This biopsy allows demonstration of the characteristic histopathological lesions and rule out other etiologies, namely malignancy and tuberculosis. They suggest that these patients must be highly motivated to stop any smoking and kept under periodic surveillance.

  5. [Pulmonary nocardiosis. A case report (author's transl)].

    PubMed

    García Rodríguez, J A; Martín Luengo, F; Villar Galán, J L

    1979-06-25

    Within the genus Nocardia three species are at present considered to have human pathologic interest: N. asteroides, N. brasiliensis, and N. caviae. These species are usually the etiologic agents of at least two clinical pictures: nocardiosis and actinomycetoma. A case of pulmonar nocardiosis in a 62-year-old male is reported. The patient had asthmatic episodes and on several occasions received treatment with corticoids. The clinical picture basically consisted of an impairment of the general condition with respiratory symptomatology and fever of 38 to 39 degrees C. An opaque pleuropulmonary image was observed on the chest X-ray film, and the diagnosis of tuberculosis was initially established. The correct diagnosis was confirmed through the bacteriological examination of the transtracheal aspirate with the isolation of N. asteroides. Treatment with streptomycin, sulfamethoxazole and trimethoprim achieved the clinical and roentgenologic cure of the patient. After 2 months of treatment the clinical manifestations had disappeared and after 5 months the chest X-ray was normal. Some epidemiologic data are reviewed.

  6. Prevalence of chronic obstructive pulmonary disease and associated factors: the PLATINO Study in São Paulo, Brazil.

    PubMed

    Menezes, Ana Maria Baptista; Jardim, José Roberto; Pérez-Padilla, Rogelio; Camelier, Aquiles; Rosa, Fernanda; Nascimento, Oliver; Hallal, Pedro Curi

    2005-01-01

    Chronic obstructive pulmonary disease (COPD) is now a major public health concern; deaths attributable to COPD in Latin America have increased by 65.0% in the last decade. This study was aimed at evaluating COPD prevalence and associated factors in adults (> 40 years) living in Greater Metropolitan São Paulo, Brazil. The study is part of the Proyecto Latinoamericano de Investigación en Obstrucción Pulmonar (The PLATINO Project), a multi-center survey on COPD burden in Latin America, with São Paulo as the first center where the project has been carried out. A population-based sample was selected in multiple stages. Spirometry tests were performed in each subject pre- and post-bronchodilator and COPD was mainly defined as the ratio of forced expiratory volume to forced vital capacity below 70.0% (fixed ratio definition). Other spirometric criteria were also used for the diagnosis of COPD. COPD prevalence was 15.8% (95%CI: 13.5-18.1) using the fixed ratio definition. COPD was positively associated with age and smoking and inversely with body mass index. Utilization of different COPD spirometry criteria resulted in different percentages of COPD, but similar associated factors.

  7. Chronic Thromboembolic Pulmonary Hypertension: Experience from a Single Center in Mexico.

    PubMed

    Al-Naamani, Nadine; Espitia H, Gaudalupe; Velazquez-Moreno, Hugo; Macuil-Chazaro, Benjamin; Serrano-Lopez, Arturo; Vega-Barrientos, Ricardo S; Hill, Nicholas S; Preston, Ioana R

    2016-04-01

    Chronic thromboembolic pulmonary hypertension (CTEPH) is characterized by precapillary pulmonary hypertension secondary to vaso-occlusive pulmonary vasculopathy and is classified as Pulmonary Hypertension Group 4. The aim of this study is to report the clinical experience of CTEPH in Mexico. Consecutive patients diagnosed with CTEPH were identified from the Registro de Pacientes con Hipertension Pulmonar del Instituto de Seguridad y Servicio Social de los Trabajadores del Estado (REPHPISSSTE) registry between January 2009 and February 2014. Right heart catheterization was not routinely performed prior to August 2010 in the work-up of CTEPH. We identified 50 patients with CTEPH; their median age was 63 years and 58 % were female. Patients had multiple associated co-morbidities and moderate hemodynamic impairment. All patients were treated with anticoagulation. Despite surgical evaluation for pulmonary endarterectomy (PEA), only one patient underwent PEA given the lack of infrastructure for post-operative care and lack of insurance for this procedure. Most of the patients were treated with sildenafil, bosentan, or both, with increasing use of rivaroxaban and sildenafil in recent years. The overall survival of the cohort was similar to that reported in other international registries, despite the limitations of care imposed by drug availability and surgical feasibility. This is the first report on the CTEPH experience in Mexico. It highlights the similarity of patients in the REPHPISSSTE registry to those in international registries as well as the challenges that clinicians face in a resource-limited setting.

  8. [Pulmonary carcinomatous lymphangitis: presentation as acute pneumopathy. Report of two cases].

    PubMed

    Ré, D P; Cazaux, A; Cambursano, V H; Zaya, A; Cortez, J R

    2013-01-01

    Introducción: La linfangitis carcinomatosa(LC) representa el 6-8% de las metástasis pulmonares. Existe evidencia de que puede ser una condición oncológicamente tratable, con impacto sobre la progresión de la disnea y lesiones radiológicas, con mejoría de la sobrevida. Se describen dos casos con el objetivo de inducir la sospecha de esta entidad ante un paciente con datos de neumopatía aguda. Métodos: Caso 1: mujer 32 años, disnea progresiva y tos de dos semanas de evolución sin respuesta a antibióticos. Taquipnea, aumento del trabajo respiratorio, crepitantes bibasales. Insuficiencia respiratoria. Radiografía: radiopacidadalvéolointersticialbibasal. Se inicia tratamiento para neumonía grave de la comunidad. Evoluciona desfavorablemente con requerimiento de ARM y desenlace fatal. Caso 2: mujer 46 años, disnea progresiva y tos de una semana de evolución. Taquipnea, subcrepitantes difusos.Insuficiencia respiratoria. Radiografía: radiopacidadintersticionodulillar difusa, con imagen radiopaca homogénea en vértice derecho.

  9. The problem of the treatment of sarcoidosis: Report of the Subcommittee on Therapy.

    PubMed

    Turiaf, J; Johns, C J; Terstein, A S; Tsuji, S; Wurm, K

    1976-01-01

    Stage I: Hilar Adenopathy With normal lung function observe, as it often resolves. With reduced lung function observe for 6-12 months. Treat if there is progression or persistence. With erythema nodosum use mild anti-inflammatory agents such as salicylates or like drugs. Stage II: Adenopathy + Pulmonar Infiltrates With normal or slightly reduced lung function observe; treat if it worsens. Treat if there is no remission in 6-12 months. With reduced lung function treat, possibly for many years or a lifetime. Stage III: Pulmonary Infiltrates +/- Fibrosis Without Adenopathy There is reduced lung function. Treat, demonstrate improvement, follow patients with serial measurements of vital capacity at least. Other Indications for Treatment Other indications for treatment include myocardial sarcoidosis, cerebral sarcoidosis (although the outcome is less certain), serious hepatic or renal sarcoidosis, hypercalcemia, persistent systemic symptoms, or other serious organ or functional impairment. Assess each patient individually and completely. Use good clinical judgement. It is clear that treatment that is too little or too late is of little benefit. Even the statistical results form a perfectly controlled study cannot provide absolute direction for the individual patient. As clinicians we are frequently called upon to apply considered judgements without hard data to predict the outcome. We also maintain the flexibility to change our therapeutic programs when circumstances change, either in the patient or in our knowledge. We can be grateful we have a treatment as good as corticosteroids and must try to exercise our best judgement as to when it should be instituted.

  10. Lung and heart pathology in fatal drug addiction. A consecutive autopsy study.

    PubMed

    Kringsholm, B; Christoffersen, P

    1987-01-01

    Lung and heart sections from 33 drug addicts submitted for medico-legal autopsy at the Institute of Forensic Medicine in Copenhagen were studied together with tissue sections from 20 'normal' persons. In the drug addict cases focal bleedings in lung tissue were found in 94%, signs of earlier bleedings, haemosiderin containing histiocytes, were seen in 91%, and focal fibrosis in 46%. The bleeding episodes may be due to hypoxia in connection with heroin intake. In 94% of the drug addicts birefringent material in lung tissue was demonstrated, in 58% in granulomas and giant cells, in 27% in giant cells only and in 9% in isolated histiocytes. The material was localized in the wall of pulmonar arteries and/or in the interstitial tissue, undoubtedly depending on the duration of the abuse. In 18% angiothrombosis was seen, in all cases granulomas/giant cells were observed in the wall of the vessel concerned. The results indicate periodical intravenous injection of dissolved tablets in addition to heroin. Histological signs of pulmonary hypertension were not seen, possibly due to the fact that abuse of central stimulants is very rare in Denmark. Regarding heart alterations no significant differences were demonstrated between drug addicts and controls. The only note-worthy finding was focal infiltration of lymphocytes in the atrio-ventricular bundle in two drug addicts, the meaning of which is uncertain.

  11. [Fibrocystic disease of the pancreas: a presentation feature. Anatomopathological report].

    PubMed

    Heffes Nahmod, L A; Ortiz, J; Cervetto, J L; Guastavino, E; Boffi, A

    1984-01-01

    Five patients with CF (cystic fibrosis) dead between 1974 to 1982 at ages ranging from one to six months are presented. All of them showed edema, hypoalbuminemia and anemia in a severely compromised clinical situation, and failure to gain weight in spite of being breast-fed in the first weeks of life, in four of them. All of them were second or third degree malnourished babies (Gomez classification) at admission. Five children presented edema, two severe, two moderate and one mild. Hematocrit values ranged from 19% to 39% (means 26.4%), and albuminemia from 1.60 to 3.00 g/% (means 2.14 g/%). Two patients presented antecedents of dead brothers. All of them received substitution therapy with pancreatic enzymes. The children dead within seven and seventeen days of admission (means ten days) of broncho-pulmonar disfunction. In this work, we wish to call the pediatrician's attention about the importance of making this diagnostic presumption in the first months of the life.

  12. [Pulmonary actinomycosis and tuberculosis. A comorbidity pediatric case].

    PubMed

    Bisero, Elsa D; Luque, Graciela F; Rizzo, Cristina N; Zapata, Alejandra E; Cuello, María S

    2016-08-01

    La actinomicosis es una infección supurativa crónica, producida por bacterias Gram-positivas anaeróbicas o especies Actinomyces microaerófilas. Es rara en niños y adolescentes; es más común en inmunodeprimidos. El Mycobacterium tuberculosis colabora en el desarrollo de la enfermedad. La afectación pulmonar aparece como un cuadro de condensación crónica que no mejora con el tratamiento antibiótico convencional. Las complicaciones clásicas de afectación de la pared torácica con fistulización y supuración en «granulo de azufre» son descritas con menor frecuencia en la actualidad. El diagnóstico es un verdadero desafío y se establece mediante el aislamiento de las especies de Actinomyces. El tratamiento de elección para todas las formas clínicas de la enfermedad es el uso prolongado de antibióticos. Objetivo. Presentar un caso pediátrico de comorbilidad entre tuberculosis y actinomicosis. Resaltar la importancia de la sospecha diagnóstica de actinomicosis frente a todo proceso supurado crónico.

  13. [Multicentric hyaline vascular Castleman's disease. A POEMS type variant].

    PubMed

    Gracia-Ramos, Abraham Edgar; Cruz-Domínguez, María del Pilar; Vera-Lastra, Olga Lidia

    2013-01-01

    Introducción: la enfermedad de Castleman es un trastorno linfoproliferativo atípico en el que pueden existir manifestaciones compatibles con síndrome POEMS. Caso clínico: hombre de 53 años de edad con antecedente de diabetes mellitus tipo 2, hipotiroidismo y enfermedad de Addison. Se iniciaron parestesias y debilidad en las extremidades y, posteriormente, disnea, endurecimiento cutáneo, fenómeno de Raynaud y pérdida de peso. Se identificó taquipnea, hiperpigmentación cutánea generalizada y extremidades con endurecimiento cutáneo, debilidad muscular, hipoestesia e hiporreflexia; así como hiperprolactinemia, testosterona baja, hipotiroidismo y enfermedad de Addison; los anticuerpos antinucleares y antiScl-70 fueron negativos. Los potenciales evocados somatosensoriales indicaron neuropatía periférica y la electromiografía, olineuropatía axonal severa. Radiografía torácica: infiltrado reticular bilateral y ensanchamiento mediastinal. Electrocardiograma: hipertensión arterial pulmonar moderada. Tomografía toracoabdominal: ganglios axilares, mediastinales y retroperitoneales. Con la biopsia se identificó enfermedad de Castleman multicéntrica hialina vascular. El paciente recibió rituximab. Conclusiones: si bien la experiencia con el rituximab aún es limitada, en el caso descrito se observó buena respuesta.

  14. [Chorea due to TITF1/NKX2-1 mutation: phenotypical description and therapeutic response in a family].

    PubMed

    Salvado, Maria; Boronat-Guerrero, Susanna; Hernández-Vara, Jorge; Álvarez-Sabin, José

    2013-05-16

    Introduccion. El corea por mutacion en el gen TITF1, tambien denominado corea hereditario benigno, es un trastorno autosomico dominante que suele iniciarse antes de los 5 anos. En la mayoria de casos, el corea tiende a mejorar con la edad. Puede asociar hipotiroidismo y problemas respiratorios, como el sindrome de distres respiratorio alveolar neonatal o la enfermedad pulmonar intersticial, ya que TITF1 es un factor de transcripcion esencial para el desarrollo del cerebro, tiroides y pulmon. Casos clinicos. Presentamos el fenotipo clinico de una familia con corea, en la cual dos hermanas presentan hipotiroidismo congenito, y una de ellas, sindrome de distres respiratorio alveolar. En ambas se identifico una mutacion en TITF1 (c.825delC) y se observo mejoria clinica en respuesta al tratamiento con levodopa-carbidopa en dosis bajas. Conclusiones. El corea por mutacion de TITF1 es una causa infradiagnosticada de corea en ninos. Debido a la posibilidad de realizar diagnostico genetico, creemos indicado realizarlo siempre en casos familiares dominantes, teniendo en cuenta la penetrancia variable, asi como en pacientes que presenten afectacion concomitante de pulmon o hipotiroidismo. En casos esporadicos, puede ser recomendable en coreas de causa no filiada, lo que nos permitira evitar otras pruebas, dar un pronostico no degenerativo, permitir un consejo genetico, y hacer ensayos terapeuticos mas dirigidos y eficaces. Por el momento, la levodopa parece el tratamiento sintomatico de eleccion.

  15. Health-hazard evaluation report HETA 82-147-1783, Converters Ink Company, Linden, New Jersey

    SciTech Connect

    Gann, P.; Liveright, T.

    1987-03-01

    The management of the Converters Ink Company located in Linden, New Jersey, requested a hazard evaluation at that facility following several reports of strong odors and illness among the workers. The symptoms included fever, weakness, chills, headache and chest discomfort. The study narrowed down the cause to a water aerosol from the Fade-Ometer machine. Questionnaires, pulmonar function tests, serum precipitin tests, and fungal cultures identified the illness among 14 workers as humidifier lung, a type of hypersensitivity pneumonitis. While the antigen for this illness was not determined, it was contained in stagnant water from the humidifier in the machine. Highly specific results were obtained using a gel diffusion test for serum precipitins to the stagnant water. The authors' recommendations include: institution of a continual flow of water through the humidifier system in this machine; draining of water from the machine at least once a month and cleaning of the surfaces with a bacteriostatic and fungistatic solution; addition of an algicide to the Fade-Ometer water to reduce the presence of organic matter; and monitoring of illnesses among laboratory personnel.

  16. [Association between the evaluation by a patient care team and compliance with the claim of drugs in pharmacy].

    PubMed

    Herrera Marín, Robinson; Estrada Acevedo, Jorge Ivan; Restrepo Jimenez, Ana Maria

    2015-01-01

    Contexto: en la actualidad es reconocido el importante desafio que implica alcanzar una adecuada adherencia farmacologica. Existen multiples metodos para detectar si un paciente es no adherente, entre los cuales el historial de dispensaciones de medicamentos en farmacia ha sido considerado adecuado. Objetivo: determinar la asociacion entre la atencion por un grupo interdisciplinario incluyendo al Farmaceutico y el cumplimiento con la reclamacion de los medicamentos en farmacia. Método: estudio de casos y controles en pacientes con Asma, Enfermedad Pulmonar Obstructiva Cronica o Rinitis alergica, que reclamaron sus medicamentos en farmacia durante el periodo Octubre de 2012 y Noviembre de 2013 (n: 526). Se definio como caso a los pacientes que durante el periodo de observacion reclamaron sus medicamentos en farmacia >95% de las veces que debieron haberlos reclamado (n: 263). Para el analisis univariado se utilizaron frecuencias absolutas y relativas y medidas de resumen. Para el bivariado tablas de contingencia y las pruebas de Chi cuadrado, T-Student (U-de Mann Whitney) y ANOVA (H-de Kruskal Wallis). La medida de fuerza estadistica utilizada fue el Odds Ratio. Para el multivariado Regresion Logistica Binaria. Resultados: el 78.3% de los casos y el 47.1% de los controles habian sido atendidos por un grupo interdisciplinario (p.

  17. ORGANIC INFLAMMATORY RESPONSE TO REDUCED PREOPERATIVE FASTING TIME, WITH A CARBOHYDRATE AND PROTEIN ENRICHED SOLUTION; A RANDOMIZED TRIAL.

    PubMed

    de Andrade Gagheggi Ravanini, Guilherme; Portari Filho, Pedro Eder; Abrantes Luna, Renato; Almeida de Oliveira, Vinicius

    2015-08-01

    Introducción: El objetivo de este estudio es la evaluación de la respuesta inflamatoria orgánica a la colecistectomía laparoscópica mediante vídeo con una reducción del tiempo de ayuno preoperatorio a 2h y empleando una solución enriquecida con carbohidratos y proteínas. Métodos: Se trata de un estudio aleatorizado, prospectivo con pacientes divididos en los dos grupos siguientes: grupo A, ayuno convencional y grupo B, ayuno abreviado de 2h con ingesta oral de una solución enriquecida con carbohidratos y proteínas. Antes de la ingesta de la solución, se hicieron mediciones de glucosa sérica, insulina, interleucina 1y TNF-α; también se realizaron mediciones durante la inducción de la anestesia y 4h después de la intervención quirúrgica. Resultados: Treinta y ocho pacientes completaron el estudio sin presentar complicaciones pulmonares relacionadas con el broncoaspirado. La varianza HOMA-IR postoperatoria fue superior en el grupo A (p = 0,001). Conclusión: La reducción del tiempo de ayuno preoperatorio a 2h, empleando soluciones enriquecidas con carbohidratos y proteínas, es segura, reduce la resistencia a la insulina, y no aumenta el riesgo de broncoaspirado.

  18. Implication of a protein-tyrosine-phosphatase in human lung cancer.

    PubMed

    Gaits, F; Li, R Y; Ragab, A; Selves, J; Ragab-Thomas, J M; Chap, H

    1994-07-01

    Protein tyrosyl phosphorylation plays an essential role in regulating cellular events such as proliferation, differentiation and oncogenesis. The recent characterization of the family of protein tyrosine phosphatases (PTPases) suggests that dephosphorylation might be a crucial event in these phenomena. One of the functions of PTPases is to reverse the effect of protein tyrosine kinases (PTKases), many of which are oncogenes, suggesting that they may act as tumor suppressors as described for HPTP gamma. In order to investigate the implication in lung cancer of HPTP beta, a receptor PTPase, we have developed a semi-quantitative method derived from primer-directed reverse transcription (RT) and subsequent polymerase chain reaction (PCR) with 32P-labelled nucleotide. We have demonstrated that the expression of HPTP beta mRNA was dramatically decreased in lung adenocarcinomas and lung malpighian carcinomas as compared to normal lung tissue. In addition, HPTP beta was not expressed in the pulmonar adenocarcinoma cell line A427, which proliferates in a deregulated way. These results suggest that the loss of expression of HPTP beta might play a role in neoplasic transformation and thus this molecule could act as a tumor suppressor factor.

  19. A calcified lung tumour and microcytic anaemia in a young woman: partial expression of the Carney triad.

    PubMed

    Alberto, V O; Kelleher, D; Denholm, R B; Nutt, M; Carney, J A

    2008-08-01

    The Carney triad is the non-familial addociation of gastric stromal tumours (GISTs), pulmonar chondromas and extra-adrenal paragangliomas. Fewer than 100 cases of the disorder have been reported since its description in 1977. The condition has a predeliction for young women. Most patients exhibit only two of the three components. The tumours tend to be multifocal in the affected organ or system. Herein, we describe the case of a 27-year-old woman with multiple gastric GISTs and a pulmonary chondroma, partial expression of the Carney triad. It is important to be aware of the Carney triad when one of its constituent tumours is found, particularly if the patient is a young woman, so that a search can be made for and surveillance instituted for the other components. Treatment for the gastric tumours (sarcomas) and the paragangliomas (potentially malignant) is surgical. The lung chondromas are benign neoplasms and ordinarily not symptomatic. If a diagnosis of the tumour can be established by biopsy, surgical resection may not be necessary.

  20. Transdifferentiation of endothelial cells to smooth muscle cells play an important role in vascular remodelling

    PubMed Central

    Coll-Bonfill, Núria; Musri, Melina Mara; Ivo, Victor; Barberà, Joan Albert; Tura-Ceide, Olga

    2015-01-01

    Pulmonary artery remodelling it is a major feature of pulmonary hypertension (PH). It is characterised by cellular and structural changes of the pulmonary arteries causing higher pulmonar vascular resistance and right ventricular failure. Abnormal deposition of smooth muscle-like (SM-like) cells in normally non-muscular, small diameter vessels and a deregulated control of endothelial cells are considered pathological features of PH. The origin of the SM-like cells and the mechanisms underlying the development and progression of this remodelling process are not understood. Endothelial cells within the intima may migrate from their organised layer of cells and transition to mesenchymal or SM-like phenotype in a process called endothelial-mesenchymal transition (EnMT). Traditionally, Waddington’s epigenetic landscape illustrates that fates of somatic cells are progressively determined to compulsorily follow a downhill differentiation pathway. EnMT induces the transformation of cells with stem cell traits, therefore contrasting Waddington’s theory and confirming that cell fate seems to be far more flexible than previously thought. The prospect of therapeutic inhibition of EnMT to delay or prevent PH may represent a promising new treatment modality. PMID:25973327

  1. Transdifferentiation of endothelial cells to smooth muscle cells play an important role in vascular remodelling.

    PubMed

    Coll-Bonfill, Núria; Musri, Melina Mara; Ivo, Victor; Barberà, Joan Albert; Tura-Ceide, Olga

    2015-01-01

    Pulmonary artery remodelling it is a major feature of pulmonary hypertension (PH). It is characterised by cellular and structural changes of the pulmonary arteries causing higher pulmonar vascular resistance and right ventricular failure. Abnormal deposition of smooth muscle-like (SM-like) cells in normally non-muscular, small diameter vessels and a deregulated control of endothelial cells are considered pathological features of PH. The origin of the SM-like cells and the mechanisms underlying the development and progression of this remodelling process are not understood. Endothelial cells within the intima may migrate from their organised layer of cells and transition to mesenchymal or SM-like phenotype in a process called endothelial-mesenchymal transition (EnMT). Traditionally, Waddington's epigenetic landscape illustrates that fates of somatic cells are progressively determined to compulsorily follow a downhill differentiation pathway. EnMT induces the transformation of cells with stem cell traits, therefore contrasting Waddington's theory and confirming that cell fate seems to be far more flexible than previously thought. The prospect of therapeutic inhibition of EnMT to delay or prevent PH may represent a promising new treatment modality.

  2. [Serologic cross-reactions to Leishmania infantum using indirect immunofluorescence in HIV+ and HIV- patients with active tuberculosis].

    PubMed

    López-Vélez, R; Turientes, M C; Gómez-Mampaso, E

    1998-03-01

    Clinical presentation of disseminated tuberculosis and visceral leishmaniosis can be very similar, mainly in those infected with HIV, being serology a useful tool in making a differential diagnosis. Cross-reactions of IFAT serodiagnosis of visceral leishmaniosis with other diseases are well known, but few data is available with tuberculosis. Detection of serum antibodies against Leishmania, using a commercial IFAT kit, was attempted in sera of 51 patients with active pulmonar and/or extrapulmonar tuberculosis (25 HIV+ and 26 HIV-). Overall cross-reactions was found in 19.6% patients without significative differences in between 2 groups, but differences in positive serum titres was observed: one at 1/256, three at 1/160, and one at 1/80 dilution, in the HIV+ group, whereas all 5 patients in HIV- group cross-reacted at 1/80 dilution. Recognition of specific leishmanial antigenic bands by serum antibodies of patients with tuberculosis were not clearly defined by Western-blot. IFAT technique for leishmaniosis cross-react in 20% of patients with tuberculosis.

  3. Bronchial fistula closure with negative pressure wound therapy: a feasible and cost-effective treatment.

    PubMed

    Nunes, Rodrigo Barboza; Müller, Bruno Francisco; Cipriano, Federico Enrique Garcia; Coltro, Pedro Soler; Farina, Jayme Adriano

    2016-01-01

    Treatment of bronchial fistula (BF) after pulmonary lobectomy is a challenge. Often, patients require long hospital stay, have recurrent empyema and pneumonia, are susceptible to sepsis, often need broad-spectrum antibiotics, as well as various surgical approaches. With the advent and growing evidence of the benefits of negative pressure therapy (NPT), its use in some patients with BF has been reported with encouraging results concerning its feasibility and cost-effectiveness. The aim of this study was to demonstrate the application of NPT as a resource for BF treatment and comparatively analyze the overall cost of treatment. RESUMO O tratamento de fístula brônquica (FB) após lobectomia pulmonar é um desafio. Muitas vezes, o paciente demanda longo tempo de internação, apresenta recidivas de empiema e pneumonia, pode evoluir para sepse, frequentemente necessita de antibioticoterapia de amplo espectro, bem como de várias abordagens cirúrgicas. Com o advento e acúmulo de evidências dos benefícios da terapia por pressão negativa (TPN), seu uso em alguns pacientes com FB tem sido relatado com resultados animadores relativos à sua viabilidade e ao seu custo-efetividade. O objetivo deste estudo foi demonstrar a aplicação de TPN como recurso para tratamento da FB e analisar comparativamente o custo global do seu tratamento.

  4. Ultrasound-guided intrapleural positioning of pleural catheters: influence on immediate lung expansion and pleurodesis in patients with recurrent malignant pleural effusion.

    PubMed

    Araujo, Pedro Henrique Xavier Nabuco de; Terra, Ricardo Mingarini; Santos, Thiago da Silva; Chate, Rodrigo Caruso; Paiva, Antonio Fernando Lins de; Pêgo-Fernandes, Paulo Manuel

    2017-01-01

    To evaluate the role of intrapleural positioning of a pleural catheter in early lung expansion and pleurodesis success in patients with recurrent malignant pleural effusion (RMPE). This was a retrospective study nested into a larger prospective cohort study including patients with RMPE recruited from a tertiary university teaching hospital between June of 2009 and September of 2014. The patients underwent pleural catheter insertion followed by bedside pleurodesis. Chest CT scans were performed twice: immediately before pleurodesis (iCT) and 30 days after pleurodesis (CT30). Catheter positioning was categorized based on iCT scans as posterolateral, anterior, fissural, and subpulmonary. We used the pleural volume on iCT scans to estimate early lung expansion and the difference between the pleural volumes on CT30 and iCT scans to evaluate radiological success of pleurodesis. Clinical pleurodesis success was defined as no need for any other pleural procedure. Of the 131 eligible patients from the original study, 85 were included in this nested study (64 women; mean age: 60.74 years). Catheter tip positioning was subpulmonary in 35 patients (41%), anterior in 23 (27%), posterolateral in 17 (20%), and fissural in 10 (12%). No significant differences were found among the groups regarding early lung expansion (median residual pleural cavity = 377 mL; interquartile range: 171-722 mL; p = 0.645), radiological success of pleurodesis (median volume = 33 mL; interquartile range: -225 to 257 mL; p = 0.923), and clinical success of pleurodesis (85.8%; p = 0.676). Our results suggest that the position of the tip of the pleural catheter influences neither early lung expansion nor bedside pleurodesis success in patients with RMPE. Avaliar o papel do posicionamento intrapleural do cateter pleural na expansão pulmonar precoce e no sucesso da pleurodese em pacientes com derrame pleural maligno recorrente (DPMR). Trata-se de um estudo retrospectivo aninhado em um estudo prospectivo de

  5. Chronic Thromboembolic Pulmonary Hypertension: Experience from a Single Center in Mexico

    PubMed Central

    Al-Naamani, Nadine; Espitia H, Gaudalupe; Velazquez-Moreno, Hugo; Macuil-Chazaro, Benjamin; Serrano-Lopez, Arturo; Vega-Barrientos, Ricardo S.; Hill, Nicholas S.

    2017-01-01

    Introduction Chronic thromboembolic pulmonary hypertension (CTEPH) is characterized by precapillary pulmonary hypertension secondary to vaso-occlusive pulmonary vasculopathy and is classified as Pulmonary Hypertension Group 4. The aim of this study is to report the clinical experience of CTEPH in Mexico. Methods Consecutive patients diagnosed with CTEPH were identified from the Registro de Pacientes con Hipertension Pulmonar del Instituto de Seguridad y Servicio Social de los Trabajadores del Estado (REPHPISSSTE) registry between January 2009 and February 2014. Right heart catheterization was not routinely performed prior to August 2010 in the work-up of CTEPH. Results We identified 50 patients with CTEPH; their median age was 63 years and 58 % were female. Patients had multiple associated co-morbidities and moderate hemodynamic impairment. All patients were treated with anticoagulation. Despite surgical evaluation for pulmonary endarterectomy (PEA), only one patient underwent PEA given the lack of infrastructure for post-operative care and lack of insurance for this procedure. Most of the patients were treated with sildenafil, bosentan, or both, with increasing use of rivaroxaban and sildenafil in recent years. The overall survival of the cohort was similar to that reported in other international registries, despite the limitations of care imposed by drug availability and surgical feasibility. Conclusion This is the first report on the CTEPH experience in Mexico. It highlights the similarity of patients in the REPHPISSSTE registry to those in international registries as well as the challenges that clinicians face in a resource-limited setting. PMID:26748498

  6. The nova-like variable KQ Mon and the nature of the UX Ursa Majoris stars

    NASA Technical Reports Server (NTRS)

    Sion, E. M.; Guinan, E. F.

    1982-01-01

    The KQ Mon is a UX UMa type nova-like variable discovered by Howard Bond. Optical spectra taken by Bond in 1978 reveal very shallow Balmer absorption lines and He I absorption. Bond also did UBV and high speed photometry in 1978 and early 1981. There has been no evidence of orbital variations but the appearance of the optical spectrum and the presence of low amplitude flickering suggested a strong similarity to CD-42-14462 (=V3885 Sgr) and other members of the UX UMa class. Low dispersion observations of KQ Mon were made with the International Ultraviolet Explorer satellite. Six spectra taken with the shot wavelength prime camera are dominated by strong broad absorption lines due to N V, O I, Si III, Si IV, C IV, He II, N IV, and Al III. There is little evidence of orbital phase modulation over the time baseline of the observations. Unlike UV observations of other UX UMa type objects, KQ Mon exhibits no emission lines or P Cygni type profiles and the velocity displacements appear to be smaller, suggesting the absence of a hot, high velocity wind characterizing other UX UMa stars. The relationship of KQ Mon to other UX UMa disk stars is discussed and a model is suggested to explain their observed properties and the lack of major outbursts.

  7. Ultraviolet studies of nova-like variables with the IUE. Final report, April 1981-September 1983

    SciTech Connect

    Guinan, E.F.

    1983-09-01

    KQ Mon is a new UX UMa-type nova-like variable. Optical spectra taken in 1978 reveal very shallow Balmer absorption lines and He I (wavelength 4471) absorption. There was no evidence of orbital variations but the appearance of the optical spectrum and the presence of low amplitude flickering suggested a strong similarity to CD-42 degrees 14462 ( V3885 Sgr) and other members of the UX UMa class. KQ Mon was observed at low dispersion with the IUE satellite. Six spectra taken with the short wavelength prime (SWP) camera are dominated by strong broad absorption lines due to N V, O I, Si III, Si IV, C IV, He II, N IV, and A1 III. There is little evidence of orbital phase modulation over the time baseline of the observations. Unlike UV observations of other UX UMa-type objects, KQ Mon exhibits no emission lines or P Cygni-type profiles and the velocity displacements appear to be smaller, suggesting the absence of a hot, high velocity wind characterizing other UX UMa stars. The relationship of KQ Mon to other UX UMa disk stars is discussed and a model is suggested to explain their observed properties and the lack of major outbursts.

  8. A nonclassical MHC class I U lineage locus in zebrafish with a null haplotypic variant

    PubMed Central

    Dirscherl, Hayley; Yoder, Jeffrey A.

    2015-01-01

    Three sequence lineages of MHC class I genes have been described in zebrafish (Danio rerio): U, Z, and L. The U lineage genes encoded on zebrafish chromosome 19 are predicted to provide the classical function of antigen presentation. This MHC class I locus displays significant haplotypic variation and is the only MHC class I locus in zebrafish that shares conserved synteny with the core mammalian MHC. Here we describe two MHC class I U lineage genes, mhc1ula and mhc1uma, that map to chromosome 22. Unlike the U lineage proteins encoded on chromosome 19, Ula and Uma likely play a nonclassical role as they lack conservation of key peptide binding residues, display limited polymorphic variation, and exhibit tissue-specific expression. We also describe a null haplotype at this chromosome 22 locus in which the mhc1ula and mhc1uma genes are absent due to a ∼30 kb deletion with no other MHC class I sequences present. Functional and non-functional transcripts of mhc1ula and mhc1uma were identified; however, mhc1uma transcripts were often not amplified or amplified at low levels from individuals possessing an apparently bona fide gene. These distinct U lineage genes may be restricted to the superorder Ostariophysi as similar sequences only could be identified from the blind cavefish (Astyanyx mexicanus), fathead minnow (Pimephales promelas), goldfish (Carassius auratus), and grass carp (Ctenopharyngodon idellus). PMID:26254596

  9. Stellar kinematic groups. I - The Ursa Major group

    NASA Technical Reports Server (NTRS)

    Soderblom, David R.; Mayor, Michel

    1993-01-01

    The Ursa Major Group (UMaG) is studied as a test case for the authenticity of Stellar Kinematic Groups, using Coravel radial velocities, recent compilations of astrometric data, and new spectroscopic observations. Spectroscopic age indicators, particularly indices of the strength of chromospheric emission, are applied to solar-type candidate members of UMaG, and it is shown that stars that meet the spectroscopic criteria also have kinematics that agree better with the space motions of the nucleus of UMaG than does the starting sample as a whole. The primary limitation on the precision of kinematics is now parallaxes instead of radial velocities. These more restrictive kinematic criteria are then applied to other UMaG candidates and a list summarizing membership is presented. UMaG is also examined as a cluster, confirming its traditional age of 0.3 Gyr, and a mean Fe/H of -0.08 +/- 0.09 for those stars most likely to be bona fide members.

  10. Is Ursa Major II the Progenitor of the Orphan Stream?

    SciTech Connect

    Fellhauer, M.; Evans, N.W.; Belokurov, V.; Zucker, D.B.; Yanny, B.; Wilkinson, M.I.; Gilmore, G.; Irwin, M.J.; Bramich, D.M.; Vidrih, S.; Hewett, Paul C.; /Cambridge U., Inst. of Astron. /Michigan State U.

    2006-11-01

    Prominent in the ''Field of Streams''--the Sloan Digital Sky Survey map of substructure in the Galactic halo--is an ''Orphan Stream'' without obvious progenitor. In this numerical study, we show a possible connection between the newly found dwarf satellite Ursa Major II (UMa II) and the Orphan Stream. We provide numerical simulations of the disruption of UMa II that match the observational data on the position, distance and morphology of the Orphan Stream. We predict the radial velocity of UMa II as -100kms{sup -1}, as well as the existence of strong velocity gradients along the Orphan Stream. The velocity dispersion of UMa II is expected to be high, though this can be caused both by a high dark matter content or by the presence of unbound stars in a disrupted remnant. However, the existence of a gradient in the mean radial velocity across UMa II provides a clear-cut distinction between these possibilities. The simulations support the idea that some of the anomalous, young halo globular clusters like Palomar 1 or Arp 2 or Ruprecht 106 may be physically associated with the Orphan Stream.

  11. The nova-like variable KQ Mon and the nature of the UX Ursa Majoris stars

    NASA Technical Reports Server (NTRS)

    Sion, E. M.; Guinan, E. F.

    1982-01-01

    The KQ Mon is a UX UMa type nova-like variable discovered by Howard Bond. Optical spectra taken by Bond in 1978 reveal very shallow Balmer absorption lines and He I absorption. Bond also did UBV and high speed photometry in 1978 and early 1981. There has been no evidence of orbital variations but the appearance of the optical spectrum and the presence of low amplitude flickering suggested a strong similarity to CD-42-14462 (=V3885 Sgr) and other members of the UX UMa class. Low dispersion observations of KQ Mon were made with the International Ultraviolet Explorer satellite. Six spectra taken with the shot wavelength prime camera are dominated by strong broad absorption lines due to N V, O I, Si III, Si IV, C IV, He II, N IV, and Al III. There is little evidence of orbital phase modulation over the time baseline of the observations. Unlike UV observations of other UX UMa type objects, KQ Mon exhibits no emission lines or P Cygni type profiles and the velocity displacements appear to be smaller, suggesting the absence of a hot, high velocity wind characterizing other UX UMa stars. The relationship of KQ Mon to other UX UMa disk stars is discussed and a model is suggested to explain their observed properties and the lack of major outbursts.

  12. Ultraviolet studies of nova-like variables with the IUE

    NASA Technical Reports Server (NTRS)

    Guinan, E. F.

    1983-01-01

    KQ Mon is a new UX UMa-type nova-like variable. Optical spectra taken in 1978 reveal very shallow Balmer absorption lines and He I (wavelength 4471) absorption. There was no evidence of orbital variations but the appearance of the optical spectrum and the presence of low amplitude flickering suggested a strong similarity to CD-42 degrees 14462 (=V3885 Sgr) and other members of the UX UMa class. KQ Mon was observed at low dispersion with the IUE satellite. Six spectra taken with the short wavelength prime (SWP) camera are dominated by strong broad absorption lines due to N V, O I, Si III, Si IV, C IV, He II, N IV, and A1 III. There is little evidence of orbital phase modulation over the time baseline of the observations. Unlike UV observations of other UX UMa-type objects, KQ Mon exhibits no emission lines or P Cygni-type profiles and the velocity displacements appear to be smaller, suggesting the absence of a hot, high velocity wind characterizing other UX UMa stars. The relationship of KQ Mon to other UX UMa disk stars is discussed and a model is suggested to explain their observed properties and the lack of major outbursts.

  13. Impact of adenotonsillectomy on vocal emission in children.

    PubMed

    Dimatos, Spyros Cardoso; Neves, Luciano Rodrigues; Beltrame, Jéssica Monique; Azevedo, Renata Rangel; Pignatari, Shirley Shizue Nagata

    2016-01-01

    Adenotonsillectomy is the most common surgery performed by otolaryngologists in pediatric age, and one of the most frequently asked questions about the postoperative period is whether there is a potential for change in vocal pattern of these children. To evaluate the impact of adenotonsillectomy in the voice emission pattern of children with hypertrophy of palatine and pharyngeal tonsils. This is a prospective study in which we carried out perceptual auditory assessments and acoustic analysis of 26 children with adenotonsillar hypertrophy at three time points: before surgery, one month and three months after surgery. The following acoustic parameters were estimated using the Praat software: fundamental frequency, jitter, shimmer, and harmonic-noise ratio. A statistically significant change was found between shimmer and harmonic-noise ratio during vowel /u/ production between the preoperative and 1st month postoperative time points. No significant differences were detected for acoustic parameters between preoperative analysis and that of the 3rd month post-operation. Transient changes in acoustic parameters occur in children with adenotonsillar hypertrophy submitted to adenotonsillectomy, progressing to normalization in the 3rd postoperative month. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  14. Power reflectance testing in newborns and infants.

    PubMed

    Lima, Ticianna Garambone de Cerqueira; Becker, Helena Maria Gonçalves; Becker, Celso Gonçalves; Ferreira, Daniele Barreto da Cunha; Resende, Camilo Brandão de; Guimarães, Roberto Eustáquio Santos

    2015-01-01

    Auditory screening in newborns allows for detection of hearing problems early in life. However, middle ear diseases can make the diagnosis more difficult. To evaluate the power reflectance test as an indicator of the middle ear disease and to compare it to tympanometry. Case study evaluating 105 newborns and infants who participated in the audiology screening in 2013. The following exams were performed: transient otoacoustic emissions, power reflectance, and tympanometry. In the optoacoustic emission evaluation, approximately 95% of the subjects passed the test. The specificity of power reflectance in all frequencies studied ranged from 75.3% to 95.9%, and that of tympanometry at 1000Hz ranged from 83% to 87.2%; there was agreement among these exams. The outcome of power reflectance tests at 2000Hz and 3000Hz showed a correlation with tympanometry and otoacoustic emissions, and these were the most appropriate frequencies to determine middle ear disease through power reflectance measurement. It was also observed that values of power reflectance above reference levels suggested the presence of fluid in the middle ear, and thus a conductive hearing loss. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  15. Initial indication of treatment in 60 patients with sleep obstructive ventilatory disturbance.

    PubMed

    de Tarso Moura Borges, Paulo; Paschoal, Jorge Rizzato

    2005-01-01

    The author present a retrospective descriptive study of 60 patients with sleep obstructive ventilatory disturbance who have taken medical advice at the Centro Campinas de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço during a period of three years. All the patients have been examined after standardized protocol and decisions related to the treatment have been taken after systematic multidisciplinary discussion. clinical retrospective. The patients were distributed into two groups according to the proposal of surgical and non-surgical treatment. After so, they were studied according to the model of treatment proposed and the main propaedeutic findings: respiratory disturbance index (RDI), body mass index (BMI), cephalometric analysis and Müller maneuver. The main features were compared--isolated or in association--with the model of treatment proposed. Amongst several conclusions obtained, the most important were: surgical and non-surgical treatment were indicated almost in the same proportion for of snoring; surgical treatments were most indicated for snoring and Apnoea-Hipopnoea Syndrome, despite of its modality; RDI, BMI and cephalometric analysis and Müller maneuver had no influence at any therapeutic modality; the therapeutic decision was taken after standardized protocol and systematic multidisciplinary discussion, where each case was discussed individually.

  16. Facial thread lifting with suture suspension.

    PubMed

    Tavares, Joana de Pinho; Oliveira, Carlos Augusto Costa Pires; Torres, Rodolfo Prado; Bahmad, Fayez

    2017-05-09

    The increased interest in minimally-invasive treatments, such as the thread lifting, with lower risk of complications, minimum length of time away from work and effectiveness in correcting ptosis and aging characteristics has led many specialists to adopt this technique, but many doubts about its safety and effectiveness still limit its overall use. To analyze data published in the literature on the durability of results, their effectiveness, safety, and risk of serious adverse events associated with procedures using several types of threading sutures. Literature review using the key words "thread lift", "barbed suture", "suture suspension" and "APTOS". Due to the scarcity of literature, recent reports of facial lifting using threads were also selected, complemented with bibliographical references. The first outcomes of facial lifting with barbed sutures remain inconclusive. Adverse events may occur, although they are mostly minor, self-limiting, and short-lived. The data on the maximum effect of the correction, the durability of results, and the consequences of the long-term suture stay are yet to be clarified. Interest in thread lifting is currently high, but this review suggests that it should not yet be adopted as an alternative to rhytidectomy. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  17. First Clinical Consensus and National Recommendations on Tracheostomized Children of the Brazilian Academy of Pediatric Otorhinolaryngology (ABOPe) and Brazilian Society of Pediatrics (SBP).

    PubMed

    Avelino, Melissa A G; Maunsell, Rebecca; Valera, Fabiana Cardoso Pereira; Lubianca Neto, José Faibes; Schweiger, Cláudia; Miura, Carolina Sponchiado; Chen, Vitor Guo; Manrique, Dayse; Oliveira, Raquel; Gavazzoni, Fabiano; Picinin, Isabela Furtado de Mendonça; Bittencourt, Paulo; Camargos, Paulo; Peixoto, Fernanda; Brandão, Marcelo Barciela; Sih, Tania Maria; Anselmo-Lima, Wilma Terezinha

    Tracheostomy is a procedure that can be performed in any age group, including children under 1year of age. Unfortunately health professionals in Brazil have great difficulty dealing with this condition due to the lack of standard care orientation. This clinical consensus by Academia Brasileira de Otorrinolaringologia Pediátrica (ABOPe) and Sociedade Brasileira de Pediatria (SBP) aims to generate national recommendations on the care concerning tracheostomized children. A group of experts experienced in pediatric tracheostomy (otorhinolaryngologists, intensive care pediatricians, endoscopists, and pediatric pulmonologists) were selected, taking into account the different regions of Brazil and following inclusion and exclusion criteria. The results generated from this document were based on the agreement of the majority of participants regarding the indications, type of cannula, surgical techniques, care, and general guidelines and decannulation. These guidelines can be used as directives for a wide range of health professionals across the country that deal with tracheostomized children. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  18. Peritonsillar and deep neck infections: a review of 330 cases.

    PubMed

    Martínez Pascual, Paula; Pinacho Martinez, Paloma; Friedlander, Eviatar; Martin Oviedo, Carlos; Scola Yurrita, Bartolome

    2017-04-09

    Deep neck infections (DNI) are defined as suppurative infectious processes of deep visceral spaces of the neck. The aim of this study is to review different factors that may influence peritonsillar and deep neck Infections (DNI) and may play a role as bad prognosis predictors. We present a retrospective study of 330 patients with DNI and peritonsillar infections who were admitted between January 2005 and December 2015 in a tertiary referral hospital. Statistical analysis of comorbidities, diagnostic and therapeutic aspects was performed with Excel and SPSS. There has been an increase in incidence of peritonsilar and DNI. Systemic comorbidities such as diabetes or hepatopathy are bad prognosis factors. The most common pathogen was S. viridans (32.1% of positive cultures). 100% of the patients received antibiotics and corticosteroids, 74.24% needed surgical treatment. The most common complications were mediastinitis (1.2%) and airway obstruction (0.9%). Systemic comorbidities are bad prognosis predictors. Nowadays mortality has decreased thanks to multidisciplinary attention and improvements in diagnosis and treatment. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  19. Brainstem auditory evoked potentials in children with lead exposure.

    PubMed

    Alvarenga, Katia de Freitas; Morata, Thais Catalani; Lopes, Andrea Cintra; Feniman, Mariza Ribeiro; Corteletti, Lilian Cassia Bornia Jacob

    2015-01-01

    Earlier studies have demonstrated an auditory effect of lead exposure in children, but information on the effects of low chronic exposures needs to be further elucidated. To investigate the effect of low chronic exposures of the auditory system in children with a history of low blood lead levels, using an auditory electrophysiological test. Contemporary cross-sectional cohort. Study participants underwent tympanometry, pure tone and speech audiometry, transient evoked otoacoustic emissions, and brainstem auditory evoked potentials, with blood lead monitoring over a period of 35.5 months. The study included 130 children, with ages ranging from 18 months to 14 years, 5 months (mean age 6 years, 8 months ± 3 years, 2 months). The mean time-integrated cumulative blood lead index was 12 μg/dL (SD ± 5.7, range: 2.433). All participants had hearing thresholds equal to or below 20 dBHL and normal amplitudes of transient evoked otoacoustic emissions. No association was found between the absolute latencies of waves I, III, and V, the interpeak latencies I-III, III-V, and I-V, and the cumulative lead values. No evidence of toxic effects from chronic low lead exposures was observed on the auditory function of children living in a lead contaminated area. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  20. Comparison between clinical and audiological results of tympanoplasty with modified sandwich technique and underlay technique.

    PubMed

    Nemade, Sanjana Vijay; Shinde, Kiran Jaywant; Naik, Chetana Shivadas; Qadri, Haris

    2017-04-21

    Surgical repair of the tympanic membrane, termed a type one tympanoplasty is a tried and tested treatment modality. Overlay or underlay technique of tympanoplasty is common. Sandwich tympanoplasty is the combined overlay and underlay grafting of tympanic membrane. To describe and evaluate the modified sandwich graft (mediolateral graft) tympanoplasty using temporalis fascia and areolar fascia. To compare the clinical and audiological outcome of modified sandwich tympanoplasty with underlay tympanoplasty. A total of 88 patients of chronic otitis media were studied. 48 patients (Group A) underwent type one tympanoplasty with modified sandwich graft. Temporalis fascia was underlaid and the areolar fascia was overlaid. 48 patients (Group B) underwent type one tympanoplasty with underlay technique. We assessed the healing and hearing results. Successful graft take up was accomplished in 47 patients (97.9%) in Group A and in 40 patients (83.3%) Group B. The average Air-Bone gap closure achieved in Group A was 24.4±1.7dB while in Group B; it was 22.5±3.5dB. Statistically significant difference was found in graft healing rate. Difference in hearing improvement was not statistically significant. Double layered graft with drum-malleus as a 'meat' of sandwich maintains a perfect balance between sufficient stability and adequate acoustic sensitivity. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  1. Acoustic rhinometry in mouth breathing patients: a systematic review.

    PubMed

    Melo, Ana Carolina Cardoso de; Gomes, Adriana de Oliveira de Camargo; Cavalcanti, Arlene Santos; Silva, Hilton Justino da

    2015-01-01

    When there is a change in the physiological pattern of nasal breathing, mouth breathing may already be present. The diagnosis of mouth breathing is related to nasal patency. One way to access nasal patency is by acoustic rhinometry. To systematically review the effectiveness of acoustic rhinometry for the diagnosis of patients with mouth breathing. Electronic databases LILACS, MEDLINE via PubMed and Bireme, SciELO, Web of Science, Scopus, PsycInfo, CINAHL, and Science Direct, from August to December 2013, were consulted. 11,439 articles were found: 30 from LILACS, 54 from MEDLINE via Bireme, 5558 from MEDLINE via PubMed, 11 from SciELO, 2056 from Web of Science, 1734 from Scopus, 13 from PsycInfo, 1108 from CINAHL, and 875 from Science Direct. Of these, two articles were selected. The heterogeneity in the use of equipment and materials for the assessment of respiratory mode in these studies reveals that there is not yet consensus in the assessment and diagnosis of patients with mouth breathing. According to the articles, acoustic rhinometry has been used for almost twenty years, but controlled studies attesting to the efficacy of measuring the geometry of nasal cavities for complementary diagnosis of respiratory mode are warranted. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  2. Molecular approach of auditory neuropathy.

    PubMed

    Silva, Magali Aparecida Orate Menezes da; Piatto, Vânia Belintani; Maniglia, Jose Victor

    2015-01-01

    Mutations in the otoferlin gene are responsible for auditory neuropathy. To investigate the prevalence of mutations in the mutations in the otoferlin gene in patients with and without auditory neuropathy. This original cross-sectional case study evaluated 16 index cases with auditory neuropathy, 13 patients with sensorineural hearing loss, and 20 normal-hearing subjects. DNA was extracted from peripheral blood leukocytes, and the mutations in the otoferlin gene sites were amplified by polymerase chain reaction/restriction fragment length polymorphism. The 16 index cases included nine (56%) females and seven (44%) males. The 13 deaf patients comprised seven (54%) males and six (46%) females. Among the 20 normal-hearing subjects, 13 (65%) were males and seven were (35%) females. Thirteen (81%) index cases had wild-type genotype (AA) and three (19%) had the heterozygous AG genotype for IVS8-2A-G (intron 8) mutation. The 5473C-G (exon 44) mutation was found in a heterozygous state (CG) in seven (44%) index cases and nine (56%) had the wild-type allele (CC). Of these mutants, two (25%) were compound heterozygotes for the mutations found in intron 8 and exon 44. All patients with sensorineural hearing loss and normal-hearing individuals did not have mutations (100%). There are differences at the molecular level in patients with and without auditory neuropathy. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  3. [Association between interleukin-6 polymorphism in the -174 G/C region and hearing loss in the elderly with a history of occupational noise exposure].

    PubMed

    Braga, Miula Portelinha; Maciel, Sandra Mara; Marchiori, Luciana Lozza de Moraes; Poli-Frederico, Regina Célia

    2014-01-01

    The biological processes involved in noise-induced hearing loss (NIHL) are still unclear. The involvement of inflammation in this condition has been suggested. To investigate the association between interleukin - 6 (IL-6) polymorphism and susceptibility to NIHL. This was a cross-sectional study with a sample of 191 independent elderly individuals aged >60 years of age. Information on exposure to occupational noise was obtained by interviews. Audiological evaluation was performed using pure tone audiometry and genotyped through PCR by restriction fragment length polymorphism - PCR-RFLP. Data were analyzed using the chi-square test and the odds ratio (OR), with the significance level set at 5%. Among elderly with hearing loss (78.0%), 18.8% had a history of exposure to occupational noise. There was a statistically significant association between the genotype frequencies of the IL-6 -174 and NIHL. The elderly with the CC genotype were less likely to have hearing loss due to occupational noise exposure when compared to those carrying the GG genotype (OR=0.0124; 95% CI 0.0023-0.0671; p<0.001). This study suggests there is an association of polymorphisms in the IL-6 gene at position - G174C with susceptibility to noise-induced hearing loss. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  4. Efferent inhibition of otoacoustic emissions in preterm neonates.

    PubMed

    Carvallo, Renata Mota Mamede; Sanches, Seisse Gabriela Gandolfi; Ibidi, Silvia Maria; Soares, Jordana Costa; Durante, Alessandra Spada

    2015-01-01

    Abnormalities in auditory function of newborns may occur not only because of preterm birth, but also from the use of medications and from diseases related to prematurity. To analyze the inhibitory effect from stimulation of the olivocochlear efferent system on transient evoked otoacoustic emissions in preterm neonates, comparing these data with those from full-term neonates. This was a prospective, cross-sectional, contemporary cohort study with 125 neonates, pooled into two groups: full-term (72 full-term neonates, 36 females and 36 males, born at 37-41 weeks of gestational age); and preterm (53 neonates, 28 males and 25 females, born at ≤36 weeks of gestational age, evaluated at the corrected gestational age of 37-41 weeks). Otoacoustic emissions were recorded using linear and nonlinear click-evoked stimuli, with and without contralateral stimulation. The inhibitory effect of the efferent pathway in otoacoustic emissions was different (p=0.012) between groups, and a mean reduction of 1.48dB SPL in full-term births and of 1.02dB SPL in preterm births was observed for the non-linear click-evoked stimulus. The results suggest a reduced inhibitory effect of the olivocochlear efferent system on otoacoustic emissions in preterm neonates. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  5. Auditory evoked potentials in a newborn Wistar rat model of hyperbilirubinemia.

    PubMed

    Gökdoğan, Çağıl; Genç, Aydan; Gülbahar, Özlem; Gökdoğan, Ozan; Helvacı, Ayşe; Bezgin, Selin Üstün; Memiş, Leyla

    2016-01-01

    Hyperbilirubinemia is a common health problem in newborns. Its effects can be different according to the level and duration of the hyperbilirubinemia. The toxic effect of bilirubin on the auditory system can be seen as a sensory neural hearing loss or auditory neuropathy spectrum disorder (ANSD). The purpose of our study was to determine the effects of toxic bilirubin level on the auditory system by using Auditory Brainstem Response audiometry. Rats are used as animal models due to their low cost and easy attainability. Auditory Brainstem Response was used for auditory assessment. In this study, three groups were established: experimental, control and placebo groups. In the experimental group, which consists of rats with hyperbilirubinemia, sensory neural hearing loss was found bilaterally in 4 rats (66.67%) and unilaterally in 2 rats (16.67%) and auditory neuropathy spectrum disorder was found unilaterally in 1 rat (8.33%). Auditory Brainstem Response thresholds were significantly elevated compared to control and placebo groups (p<0.05). Hyperbilirubinemia of newborn rats may result both in sensory neural hearing loss and auditory neuropathy spectrum disorder. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  6. [Morphometric analysis of nasal shapes and angles in young adults].

    PubMed

    Uzun, Ahmet; Ozdemir, Fikri

    2014-01-01

    The size, angle, shape and type of nose are a signature indicating race, age and sex. Describe and compare nasal angles, nose types, nostril models, and nasal profiles in young Turkish males and females. The study group consisted of university students, 56 males and 59 females. Nasal measurements were obtained from all subjects, using anthropometric methods. The nose types of females and males were 78% and 70% narrow nose, respectively. The means of females' nasofrontal, nasal tip, nasolabial, and alar slope angles were 133.16° ± 8.88°; 77.91° ± 9.80°; 98.91° ± 10.01°, and 80.89° ± 8.33°, respectively. The means of males' nasofrontal, nasal tip, nasolabial, and alar slope angles were 123.85° ± 13.23°; 82.16° ± 9.98°; 97.91° ± 8.78° and 85.98° ± 8.72°, respectively. The average values of the nose in this population may be used as a guide to plan corrective esthetic-cosmetic surgery and for burn scars of the nose. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  7. Cephalometric and anthropometric data of obstructive apnea in different age groups.

    PubMed

    Borges, Paulo de Tarso Moura; Silva, Benedito Borges da; Moita Neto, José Machado; Borges, Núbia Evangelista de Sá; Li, Li M

    2015-01-01

    Patients with obstructive sleep apnea syndrome usually present with changes in upper airway morphology and/or body fat distribution, which may occur throughout life and increase the severity of obstructive sleep apnea syndrome with age. To correlate cephalometric and anthropometric measures with obstructive sleep apnea syndrome severity in different age groups. A retrospective study of cephalometric and anthropometric measures of 102 patients with obstructive sleep apnea syndrome was analyzed. Patients were divided into three age groups (≥20 and <40 years, ≥40 and <60 years, and ≥60 years). Pearson's correlation was performed for these measures with the apnea-hypopnea index in the full sample, and subsequently by age group. The cephalometric measures MP-H (distance between the mandibular plane and the hyoid bone) and PNS-P (distance between the posterior nasal spine and the tip of the soft palate) and the neck and waist circumferences showed a statistically significant correlation with apnea-hypopnea index in both the full sample and in the ≥40 and <60 years age group. These variables did not show any significant correlation with the other two age groups (<40 and ≥60 years). Cephalometric measurements MP-H and PNS-P and cervical and waist circumferences correlated with obstructive sleep apnea syndrome severity in patients in the ≥40 and <60 age group. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  8. POSTOPERATIVE EFFECT OF PHYSICAL THERAPY RELATED TO FUNCTIONAL CAPACITY AND RESPIRATORY MUSCLE STRENGTH IN PATIENTS SUBMITTED TO BARIATRIC SURGERY.

    PubMed

    Oliveira, Josélia Jucirema Jarschel de; Freitas, Alexandre Coutinho Teixeira de; Almeida, Andréa Adriana de

    Respiratory physiotherapy plays an important role preventing complications in bariatric surgery. To assess the effects of out-patient physiotherapy during post-operative period through respiratory pressures and functional capacity in individuals submitted to bariatric surgery. A prospective longitudinal and controlled study was done in adults with body mass index (BMI) equal or greater than 40 kg/m², who have been submitted to bariatric surgery. They were divided into two groups: intervention-group, who performed out-patient physiotherapy twice a week, from thirty to sixty days after surgery; and the control-group, who only followed home instructions. Both groups were evaluated before surgery and sixty days after surgery through manovacuometry, six-minute walk test and the Borg Scale of perceived exertion. Twenty participants were included the intervention-group and twenty-three in the control-group. Both groups had significant and similar weight loss after surgery. The manovacuometry presented no differences comparing pre- and post-surgery and in the comparison between the groups. The result of the six-minute walk test for the intervention-group increased by 10.1% in the post-operative period in relation to pre-. The Borg scale of perceived exertion in the intervention-group in pre-surgery decreased by 13.5% in the post-surgery compared to pre-surgery. In the control-group there was no difference comparing pre- and post-operative values, as in the comparison with the intervention-group. The low-intensity exercise program, carried out between the 30th and the 60th day after bariatric surgery provided better functional capacity; did not change respiratory muscle strength; and improved the perceived exertion rate. A fisioterapia respiratória tem papel importante na prevenção das complicações da cirurgia bariátrica. Avaliar os efeitos da fisioterapia ambulatorial no pós-operatório através das pressões respiratórias e da capacidade funcional dos indiv

  9. Osteonecrosis of the jaws: a review and update in etiology and treatment.

    PubMed

    Ribeiro, Guilherme H; Chrun, Emanuely S; Dutra, Kamile L; Daniel, Filipe I; Grando, Liliane J

    2017-06-24

    Osteonecrosis of the jaws can result either from radiation, used in radiotherapy for treatment of malignant tumors, or medications used for bone remodeling and anti-angiogenesis such as bisphosphonates. These conditions can be associated with triggering factors such as infection, trauma and decreased vascularity. The management of patients with osteonecrosis of the jaws requires caution since there is no specific treatment that acts isolated and decidedly. However, different treatment modalities can be employed in an associated manner to control and stabilize lesions. To review the current knowledge on etiology and management of osteonecrosis of the jaws, both radio-induced and medication-related, aiming to improve knowledge of professionals seeking to improve the quality of life of their patients. Literature review in PubMed as well as manual search for relevant publications in reference list of selected articles. Articles in English ranging from 1983 to 2017, which assessed osteonecrosis of the jaws as main objective, were selected and analyzed. Infections, traumas and decreased vascularity have a triggering role for osteonecrosis of the jaws. Prophylactic and/or stabilizing measures can be employed in association with therapeutic modalities to properly manage osteonecrosis of the jaws patients. Selecting an appropriate therapy for osteonecrosis of the jaws management based on current literature is a rational decision that can help lead to a proper treatment plan. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  10. [Larynx cancer: quality of life and voice after treatment].

    PubMed

    Rossi, Vaneli Colombo; Fernandes, Fernando Laffitte; Ferreira, Maria Augusta Aliperti; Bento, Lucas Ricci; Pereira, Pablo Soares Gomes; Chone, Carlos Takahiro

    2014-01-01

    Treatments for patients with laryngeal cancer often have an impact on physical, social, and psychological functions. To evaluate quality of life and voice in patients treated for advanced laryngeal cancer through surgery or exclusive chemoradiation. Retrospective cohort study with 30 patients free from disease: ten total laryngectomy patients without production of esophageal speech (ES); ten total laryngectomy patients with tracheoesophageal speech (TES), and ten with laryngeal speech. Quality of life was measured by SF-36, Voice-Related Quality of Life (V-RQOL), and Voice Handicap Index (VHI) protocols, applied on the same day. The SF-36 showed that patients who received exclusive chemoradiotherapy had better quality of life than the TES and ES groups. The V-RQOL showed that the voice-related quality of life was lower in the ES group. In the VHI, the ES group showed higher scores for overall, emotional, functional, and organic VHI. Quality of life and voice in patients treated with chemoradiotherapy was better than in patients treated surgically. The type of medical treatment used in patients with laryngeal cancer can bring changes in quality of life and voice. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  11. Auditory-perceptual analysis of voice in abused children and adolescents.

    PubMed

    Stivanin, Luciene; Santos, Fernanda Pontes dos; Oliveira, Christian César Cândido de; Santos, Bernardo dos; Ribeiro, Simone Tozzini; Scivoletto, Sandra

    2015-01-01

    Abused children and adolescents are exposed to factors that can trigger vocal changes. This study aimed to analyze the prevalence of vocal changes in abused children and adolescents, through auditory-perceptual analysis of voice and the study of the association between vocal changes, communication disorders, psychiatric disorders, and global functioning. This was an observational and transversal study of 136 children and adolescents (mean age 10.2 years, 78 male) who were assessed by a multidisciplinary team specializing in abused populations. Speech evaluation was performed (involving the aspects of oral and written communication, as well as auditory-perceptual analysis of voice, through the GRBASI scale). Psychiatric diagnosis was performed in accordance with the DSM-IV diagnostic criteria and by applying the K-SADS; global functioning was evaluated by means of the C-GAS scale. The prevalence of vocal change was 67.6%; of the patients with vocal changes, 92.3% had other communication disorders. Voice changes were associated with a loss of seven points in global functioning, and there was no association between vocal changes and psychiatric diagnosis. The prevalence of vocal change was greater than that observed in the general population, with significant associations with communication disorders and global functioning. The results demonstrate that the situations these children experience can intensify the triggering of abusive vocal behaviors and consequently, of vocal changes. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  12. Sulfated glycosaminoglycans in human vocal fold lamina propria.

    PubMed

    Park, Sung Woo; Korn, Gustavo Polacow; Kobayashi, Elsa Yoko; Martins, João Roberto Maciel; De Biase, Noemi Grigoletto

    The distribution, concentration and function of glycosaminoglycans in the various vocal fold tissues are still unclear. To evaluate the distribution and concentration of sulfated glycosaminoglycans in different layers of the human vocal fold according to gender and age. We used 11 vocal folds obtained from cadavers (7 men and 4 women) with no laryngeal lesion, less than 12h after death, and aged between 35 and 98 years. The folds underwent glycosaminoglycans extraction from the cover and ligament, and post-electrophoresis analysis. Data were compared according to the layer, age and gender. The concentration of dermatan sulfate was significantly higher in all layers. No differences were observed in the total concentrations of glycosaminoglycans in layers studied according to gender. It is significantly lower in the cover of individuals aged below 60 years. Dermatan sulfate, chondroitin sulfate, and heparan sulfate were observed in the human vocal folds cover and ligament of both genders, with the concentration of dermatan sulfate being significantly higher in all layers. Glycosaminoglycans concentration on the cover is significantly lower in individuals below 60 years compared with elderly. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  13. Body mass index and acoustic voice parameters: is there a relationship.

    PubMed

    Souza, Lourdes Bernadete Rocha de; Santos, Marquiony Marques Dos

    2017-05-06

    Specific elements such as weight and body volume can interfere in voice production and consequently in its acoustic parameters, which is why it is important for the clinician to be aware of these relationships. To investigate the relationship between body mass index (BMI) and the average acoustic voice parameters. Observational, cross-sectional descriptive study. The sample consisted of 84 women, aged between 18 and 40years, an average of 26.83 (±6.88). The subjects were grouped according to BMI: 19 underweight; 23 normal ranges, 20 overweight and 22 obese and evaluated the fundamental frequency (f0) of the sustained vowel [a] and the Maximum Phonation Time (MPT) of the vowels [a], [i], [u], using PRAAT software. The data were submitted to the Kruskal-Wallis test to verify if there were differences between the groups regarding the study variables. All variables showed statistically significant results and were subjected to non-parametric test Mann-Whitney. Regarding to the average of the fundamental frequency, there was statistically significant difference between groups with underweight and overweight and obese; normal range and overweight and obese. The average MPT revealed statistically significant difference between underweight and obese individuals; normal range and obese; overweight and obese. Body mass index influenced the average fundamental frequency of overweight and obese individuals evaluated in this study. Obesity influenced in reducing MPT average. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  14. Quality of life and cochlear implant: results in adults with postlingual hearing loss.

    PubMed

    Sousa, Aline Faria de; Couto, Maria Inês Vieira; Martinho-Carvalho, Ana Claudia

    2017-07-05

    Considering the variability of results found in the clinical population using a cochlear implant, researchers in the area have been interested in the inclusion of quality of life measures to subjectively assess the benefits of the implantation. To assess the quality of life of adult users of cochlear implant. A cross-sectional and clinical study in a group of 26 adults of both genders, with mean duration of cochlear implant use of 6.6 years. The Nijmegen Cochlear Implantation Questionnaire and the generic World Health Organization Quality of Life questionnaire were sent electronically. The best assessed domain in the quality of life assessment for the cochlear implantation questionnaire was the social domain, whereas for the quality of life questionnaire it was the psychological domain. The variables, gender, time of cochlear implant use and auditory modality did not influence the results of both questionnaires. Only the variable level of education was correlated with the environment domain of the quality of life questionnaire. The variable telephone speech comprehension was associated with a better perception of quality of life for all the domains of the specific questionnaire and for the self-assessment of quality of life in general. From the users' perspective, both questionnaires showed that cochlear implant brought benefits to different aspects related to quality of life. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  15. Accuracy of peripheral arterial tonometry in the diagnosis of obstructive sleep apnea.

    PubMed

    Pinto, José Antonio; Godoy, Luciana Balester Mello de; Ribeiro, Renata Coutinho; Mizoguchi, Elcio Izumi; Hirsch, Lina Ana Medeiros; Gomes, Leonardo Marques

    2015-01-01

    The use of handheld devices that assess peripheral arterial tonometry has emerged as an auxiliary method for assessment and diagnosis of obstructive sleep apnea syndrome. To evaluate the accuracy of peripheral arterial tonometry in the diagnosis of obstructive sleep apnea. Contemporary cohort cross-sectional study. Thirty patients with suspected obstructive sleep apnea underwent peripheral arterial tonometry and assisted nocturnal polysomnography concomitantly. The mean apnea/hypopnea index by peripheral arterial tonometry was significantly higher than that by polysomnography (p<0.001), but the values of both sleep studies were significantly correlated (r=0.762). There was a high correlation between variables: minimum oxygen saturation (r=0.842, p<0.001), oxygen saturation<90% (r=0.799, p<0.001), and mean heart rate (r=0.951, p<0.001). Sensitivity and specificity were 60% and 96.2% (AUC: 0.727; p=0.113), respectively, when at a threshold value of 5 events/h. In severe cases (≥30 events/h), the result was a sensitivity of 77.8% and a specificity of 86.4% (AUC: 0.846, p=0.003). Peripheral arterial tonometry is a useful portable device for the diagnosis of obstructive sleep apnea; its accuracy is higher in moderate and severe cases. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  16. Spontaneous healing of the tympanic membrane after traumatic perforation in rats.

    PubMed

    Araújo, Marcos Miranda de; Murashima, Adriana Andrade Batista; Alves, Vani Maria; Jamur, Maria Celia; Hyppolito, Miguel Angelo

    2014-01-01

    The most common etiologies of tympanic membrane perforation are infections and trauma. The objective of the present study was to assess the healing of traumatic tympanic membrane perforation in rats. The tympanic membrane from male Wistar rats was perforated in the anterior and posterior portions to the handle of the malleus. Five tympanic membranes were evaluated 3 days after tympanic perforation; 5 after 5 days; 5 after 7 days; 3 after 10 days; and 4 after 14 days. The tympanic membranes were submitted to histopathological evaluation after hematoxylin-eosin staining. Tympanic membrane closure occurred at about 7-10 days after injury and the healing process was complete by day 14. The proliferative activity of the outer epithelial layer was present close to the handle of the malleus and to the tympanic annulus. The spontaneous healing process of the tympanic membrane starts from the outer epithelial layer, with later healing of the lamina propria and the mucosal layer. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  17. Effectiveness of acupuncture therapy as treatment for tinnitus: a randomized controlled trial.

    PubMed

    Doi, Marcelo Yugi; Tano, Simone Sayomi; Schultz, Adriane Rocha; Borges, Ricardo; Marchiori, Luciana Lozza de Moraes

    2016-01-01

    Tinnitus is a subjective sensation of hearing a sound in the absence of an external stimulus, which significantly worsens the quality of life in 15-25% of affected individuals. To assess the effectiveness of acupuncture therapy for tinnitus. Randomized clinical trial ( 2T9T7Q) with 50 participants with tinnitus, divided into two groups: 25 participants in the acupuncture group and 25 participants in the control group. The acupuncture group received acupuncture treatment and the control group received no treatment. After a period of 5 weeks, they were called to perform the final evaluation and the control group received acupuncture treatment for ethical reasons. A statistically significant result was found for the primary outcome, reducing the intensity of tinnitus, with p=0.0001 and the secondary endpoint, showing improvement in quality of life, with p=0.0001. Chinese scalp acupuncture associated with bilateral electroacupuncture demonstrated, in the short term, a statistically significant improvement by reducing the level of tinnitus intensity, as well as improving the quality of life of individuals with tinnitus. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  18. Pinna synthetic mold for otoplasty techniques application.

    PubMed

    Reis, Mariah Guieiro Alves Dos; Marim, Ricardo Guimarães; Souto, Luis Ricardo Martinhão

    2017-02-14

    The ear deformity Tanzer type V, also known as prominent ears, is the most common genetic defect of the pinna. The surgery designed for its correction is known as otoplasty. This esthetic surgery can be performed using different techniques, which requires great skill of its operator. The purpose of this work is the development of a new tool for otoplasty techniques training, aimed on the possibility to minimize errors during the otoplasty. Synthetic molds of the external ear from patients with Tanzer type V deformity were made, using silicone material and Rayon. The main procedures of otoplasty could be performed in the molds made of silicone and Rayon with a good esthetic result. The elaborated molds had identical size and shape of a human ear and could be positioned in the same shape of the patient ears. Thus, the synthetic molds were presented as promising simulation tools for the training and surgical enhancement of otoplasty, especially for doctors beginners. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  19. Sinusitis in patients undergoing allogeneic bone marrow transplantation - a review.

    PubMed

    Drozd-Sokolowska, Joanna Ewa; Sokolowski, Jacek; Wiktor-Jedrzejczak, Wieslaw; Niemczyk, Kazimierz

    Sinusitis is a common morbidity in general population, however little is known about its occurrence in severely immunocompromised patients undergoing allogeneic hematopoietic stem cell transplantation. The aim of the study was to analyze the literature concerning sinusitis in patients undergoing allogeneic bone marrow transplantation. An electronic database search was performed with the objective of identifying all original trials examining sinusitis in allogeneic hematopoietic stem cell transplant recipients. The search was limited to English-language publications. Twenty five studies, published between 1985 and 2015 were identified, none of them being a randomized clinical trial. They reported on 31-955 patients, discussing different issues i.e. value of pretransplant sinonasal evaluation and its impact on post-transplant morbidity and mortality, treatment, risk factors analysis. Results from analyzed studies yielded inconsistent results. Nevertheless, some recommendations for good practice could be made. First, it seems advisable to screen all patients undergoing allogeneic hematopoietic stem cell transplantation with Computed Tomography (CT) prior to procedure. Second, patients with symptoms of sinusitis should be treated before hematopoietic stem cell transplantation (HSCT), preferably with conservative medical approach. Third, patients who have undergone hematopoietic stem cell transplantation should be monitored closely for sinusitis, especially in the early period after transplantation. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  20. [Effects of the reduction of caffeine consumption on tinnitus perception].

    PubMed

    Figueiredo, Ricardo Rodrigues; Rates, Marcelo José Abras; Azevedo, Andréia Aparecida de; Moreira, Ronaldo Kennedy de Paula; Penido, Norma de Oliveira

    2014-01-01

    For many years, excessive caffeine consumption has been touted as an aggravating factor for tinnitus. The pathophysiology behind this effect is probably related to the blockage of adenosine receptors by the action of caffeine on the central nervous system. To evaluate the effects of reduction of coffee consumption on tinnitus sensation and to identify subgroups more prone to benefit from this therapeutic strategy. Prospective. Twenty-six tinnitus patients who consumed at least 150 mL of coffee per day were selected. All were asked to reduce their coffee consumption. The Tinnitus Handicap Inventory (THI) questionnaire was completed by the patients before and after the reduction of coffee consumption, as well as a visual-analog scale (VAS) graduated from 1 to 10. THI and VAS scores were significantly reduced (p<0.05). In the subgroups less than 60 years old, bilateral tinnitus and daily coffee consumption between 150 and 300 mL showed a significantly greater reduction of THI and VAS scores. Patients under 60 years of age with bilateral tinnitus and daily coffee consumption between 150 and 300 mL are more prone to benefit from consumption reduction. Thirty-day observation periods may be helpful for a better therapeutical decision. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  1. Music students: conventional hearing thresholds and at high frequencies.

    PubMed

    Lüders, Débora; Gonçalves, Cláudia Giglio de Oliveira; Lacerda, Adriana Bender de Moreira; Ribas, Ângela; Conto, Juliana de

    2014-01-01

    Research has shown that hearing loss in musicians may cause difficulty in timbre recognition and tuning of instruments. To analyze the hearing thresholds from 250 Hz to 16,000 Hz in a group of music students and compare them to a non-musician group in order to determine whether high-frequency audiometry is a useful tool in the early detection of hearing impairment. Study design was a retrospective observational cohort. Conventional and high-frequency audiometry was performed in 42 music students (Madsen Itera II audiometer and TDH39P headphones for conventional audiometry, and HDA 200 headphones for high-frequency audiometry). Of the 42 students, 38.1% were female students and 61.9% were male students, with a mean age of 26 years. At conventional audiometry, 92.85% had hearing thresholds within normal limits; but even within the normal limits, the worst results were observed in the left ear for all frequencies, except for 4000 Hz; compared to the non-musician group, the worst results occurred at 500 Hz in the left ear, and at 250 Hz, 6000 Hz, 9000 Hz, 10,000 Hz, and 11,200 Hz in both the ears. The periodic evaluation of high-frequency thresholds may be useful in the early detection of hearing loss in musicians. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  2. Cortical inhibition effect in musicians and non-musicians using P300 with and without contralateral stimulation.

    PubMed

    Rabelo, Camila Maia; Neves-Lobo, Ivone Ferreira; Rocha-Muniz, Caroline Nunes; Ubiali, Thalita; Schochat, Eliane

    2015-01-01

    Musicians have more robust and efficient neural responses in the cortical and sub-cortical regions, demonstrating that musical experience benefits the processing of both non-linguistic and linguistic stimuli. This study aimed to verify P300's latency and amplitude behavioral using contralateral stimulation in musicians and non-musicians. This was a case-control study. Subjects were divided in two groups: musicians, comprising 30 professional musicians, and non-musicians, comprising 25 subjects without musical experience. The present study showed that the musicians had lower latencies and higher amplitudes than the non-musicians in the P300 without contralateral noise. For the P300 amplitude values, the difference between groups persisted, and the musicians presented significantly higher amplitude values compared with the non-musicians; additionally, the analysis of the noise effect on the P300 response showed that the latency values were significantly increased in the musicians. The central auditory nervous system of musicians presents peculiar characteristics of electrophysiological responses probably due to the plasticity imposed by musical practice. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  3. Translation and cross-cultural adaptation into Brazilian Portuguese of the Vanderbilt Head and Neck Symptom Survey version 2.0 (VHNSS 2.0) for the assessment of oral symptoms in head and neck cancer patients submitted to radiotherapy.

    PubMed

    Barroso, Eliane Marçon; Carvalho, André Lopes; Paiva, Carlos Eduardo; Nunes, João Soares; Paiva, Bianca Sakamoto Ribeiro

    2015-01-01

    Patients submitted to radiotherapy for the treatment of head and neck cancer have several symptoms, predominantly oral. The Vanderbilt Head and Neck Symptom Survey version 2.0 is an American tool developed to evaluate oral symptoms in head and neck cancer patients submitted to radiotherapy. The aim of the present study was to translate the Vanderbilt Head and Neck Symptom Survey version 2.0 into Brazilian Portuguese and cross-culturally adapt this tool for subsequent validation and application in Brazil. A method used for the translation and cultural adaptation of tools, which included independent translations, synthesis of the translations, back-translations, expert committee, and pre-test, was used. The pre-test was performed with 37 head and neck cancer patients, who were divided into four groups, to assess the relevance and understanding of the assessed items. Data were submitted to descriptive statistical analysis. The overall mean of the content validity index was 0.79 for semantic and idiomatic equivalence, and it was higher than 0.8 for cultural and conceptual equivalence. The cognitive interview showed that patients were able to paraphrase the items, and considered them relevant and easily understood. The tool was translated and cross-culturally adapted to be used in Brazil. The authors believe this translation is suited for validation. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  4. Thoracic damage control surgery.

    PubMed

    Gonçalves, Roberto; Saad, Roberto

    2016-01-01

    The damage control surgery came up with the philosophy of applying essential maneuvers to control bleeding and abdominal contamination in trauma patients who are within the limits of their physiological reserves. This concept was extended to thoracic injuries, where relatively simple maneuvers can shorten operative time of in extremis patients. This article aims to revise the various damage control techniques in thoracic organs that must be known to the surgeon engaged in emergency care. RESUMO A cirurgia de controle de danos surgiu com a filosofia de se aplicar manobras essenciais para controle de sangramento e contaminação abdominal, em doentes traumatizados, nos limites de suas reservas fisiológicas. Este conceito se estendeu para as lesões torácicas, onde manobras relativamente simples, podem abreviar o tempo operatório de doentes in extremis. Este artigo tem como objetivo, revisar as diversas técnicas de controle de dano em órgãos torácicos, que devem ser de conhecimento do cirurgião que atua na emergência.

  5. Hearing health network: a spatial analysis.

    PubMed

    Rezende, Camila Ferreira de; Carvalho, Sirley Alves da Silva; Maciel, Fernanda Jorge; Oliveira Neto, Raimundo de; Pereira, Darlan Venâncio Thomaz; Lemos, Stela Maris Aguiar

    2015-01-01

    In order to meet the demands of the patient population with hearing impairment, the Hearing Health Care Network was created, consisting of primary care actions of medium and high complexity. Spatial analysis through geoprocessing is a way to understand the organization of such services. To analyze the organization of the Hearing Health Care Network of the State of Minas Gerais. Cross-sectional analytical study using geoprocessing techniques. The absolute frequency and the frequency per 1000 inhabitants of the following variables were analyzed: assessment and diagnosis, selection and adaptation of hearing aids, follow-up, and speech therapy. The spatial analysis unit was the health micro-region. The assessment and diagnosis, selection, and adaptation of hearing aids and follow-up had a higher absolute number in the micro-regions with hearing health services. The follow-up procedure showed the lowest occurrence. Speech therapy showed higher occurrence in the state, both in absolute numbers, as well as per population. The use of geoprocessing techniques allowed the identification of the care flow as a function of the procedure performance frequency, population concentration, and territory distribution. All procedures offered by the Hearing Health Care Network are performed for users of all micro-regions of the state. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  6. The effect of melatonin and vitamin C treatment on the experimentally induced tympanosclerosis: study in rats.

    PubMed

    Koc, Sema; Kıyıcı, Halil; Toker, Aysun; Soyalıç, Harun; Aslan, Huseyin; Kesici, Hakan; Karaca, Zafer I

    The ethiopathogenesis of tympanosclerosis has not been completely under- stood yet. Recent studies have shown that free oxygen radicals are important in the formation of tympanosclerosis. Melatonin and Vitamin C are known to be a powerful antioxidant, interacts directly with Reactive Oxygen Species and controls free radical-mediated tissue damage. To demonstrate the possible preventative effects of melatonin and Vitamin C on tympanosclerosis in rats by using histopathology and determination of total antioxidant status total antioxidant status. Standard myringotomy and standard injury were performed in the middle ear of 24 rats. The animals were divided into three groups: Group 1 received melatonin, Group 2 received vitamin C, and Group 3 received saline solution. The mean values of total antioxidant status were similar in the all study groups before the treatment period. The mean values of total antioxidant status were significantly higher in the melatonin and vitamin C groups compared to control group but vitamin C with melatonin groups were similar after the treatment period (p<0.001). Minimum and maximum wall thicknesses were lower in the melatonin and vitamin C groups compared to the control group but the differences were insignificant. Melatonin increases total antioxidant status level and might have some effect on tympanosclerosis that develops after myringotomy. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  7. Association between maternal smoking, gender, and cleft lip and palate.

    PubMed

    Martelli, Daniella Reis Barbosa; Coletta, Ricardo D; Oliveira, Eduardo A; Swerts, Mário Sérgio Oliveira; Rodrigues, Laíse A Mendes; Oliveira, Maria Christina; Martelli Júnior, Hercílio

    2015-01-01

    Cleft lip and/or palate (CL/P) represent the most common congenital anomalies of the face. To assess the relationship between maternal smoking, gender and CL/P. This is an epidemiological cross-sectional study. We interviewed 1519 mothers divided into two groups: mothers of children with CL/P (n=843) and mothers of children without CL/P (n=676). All mothers were classified as smoker or non-smoker subjects during the first trimester of pregnancy. To determine an association among maternal smoking, gender, and CL/P, odds ratios were calculated and the adjustment was made by a logistic regression model. An association between maternal smoking and the presence of cleft was observed. There was also a strong association between male gender and the presence of cleft (OR=3.51; 95% CI 2.83-4.37). By binary logistic regression analysis, it was demonstrated that both variables were independently associated with clefts. In a multivariate analysis, male gender and maternal smoking had a 2.5- and a 1.5-time greater chance of having a cleft, respectively. Our findings are consistent with a positive association between maternal smoking during pregnancy and CL/P in male gender. The results support the importance of smoking prevention and introduction of cessation programs among women with childbearing potential. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  8. References from Brazilian medical journals in national publications.

    PubMed

    Teixeira, Renan Kleber Costa; Botelho, Nara Macedo; Petroianu, Andy

    2013-01-01

    To assess whether there is a preference for international journal citation to the detriment of national ones in ten Brazilian medical journals, in two different periods. All references in the articles published in Arquivos Brasileiros de Oftalmologia, Revista Brasileira de Cirurgia Cardiovascular, Revista da Associação Médica Brasileira, São Paulo Medical Journal, Arquivos Brasileiros de Endocrinologia e Metabologia, Clinics, Jornal Brasileiro de Pneumologia, Revista da Sociedade Brasileira de Medicina Tropical, Revista Brasileira de Psiquiatria e Acta Ortopédica Brasileira in the years 2011 and 2007 were analyzed, assessing the number of articles published in national and international journals. A total of 36,125 references from 1,462 articles published in the 10 aforementioned journals were analyzed. Of the total number, 4.242 (11.74%) were from Brazilian journals. There was no significant difference between the two analyzed periods. A total of 453 (30,98%) of the articles studied non-cited brazilian papers,and 81 (5.54%) articles had more Brazilian than international references. Of total references analyzed, 11.74% were related to articles published in Brazilian journals. This number, when compared to the percentage of Brazilian articles published in the medical area, demonstrates a good number of citations of national articles. Copyright © 2012 Elsevier Editora Ltda. All rights reserved.

  9. A review of cardiopulmonary research in Brazilian medical journals: clinical, surgical and epidemiological data.

    PubMed

    Serrano, Carlos; Rocha e Silva, Mauricio

    2010-04-01

    Research in the field of cardiopulmonary disease in Brazil has been very active in recent decades. The combination of PUBMED, SCieLO, open access and online searching has provided a significant increase in the visibility of Brazilian journals. This newly acquired international visibility has in turn resulted in the appearance of more original research reports in the Brazilian scientific press. This review is intended to highlight part of this work for the benefit of the readers of "Clinics." We searched through PUBMED for noteworthy articles published in Brazilian medical journals included in the Journal of Citation Reports of the Institute of Scientific Information to better expose them to our readership. The following journals were examined: "Arquivos Brasileiros de Cardiologia," "Arquivos Brasileiros de Endocrinologia e Metabologia," "Brazilian Journal of Medical and Biological Reviews," "Jornal Brasileiro de Pneumologia," "Jornal de Pediatria," "Revista Brasileira de Cirurgia Cardiovascular," "Revista da Associação Médica Brasileira," Revista da Escola de Enfermagem U.S.P." and "São Paulo Medical Journal." These journals publish original investigations in the field of cardiopulmonary disease. The search produced 71 references, which are briefly examined.

  10. Carotid blowout syndrome in patients treated by larynx cancer.

    PubMed

    Chiesa Estomba, Carlos Miguel; Betances Reinoso, Frank Alberto; Osorio Velasquez, Alejandra; Castro Macia, Olalla; Gonzalez Cortés, Maria Jesus; Araujo Nores, Jesus

    2016-09-29

    Carotid blowout syndrome is an uncommon complication for patient treated by head and neck tumours, related with a high mortality rate. The aim of this study was to study the risk of carotid blowout in a large cohort of patients treated only by larynx cancer. Retrospective analysis of patients older than 18 years, treated by larynx cancer who developed a carotid blowout syndrome in a tertiary academic centre. 197 patients met the inclusion criteria, 192 (98.4%) were male and 5 (1.6%) were female. 6 (3%) patients developed a carotid blowout syndrome, 4 patients had a carotid blowout syndrome located in the internal carotid artery and 2 in the common carotid artery. According to the type of rupture, 3 patients suffer a type I, 2 patients a type III and 1 patient a type II. Five of those patients had previously undergone radiotherapy and all patients underwent total laryngectomy. We found a statistical correlation between open surgical procedures (p=0.004) and radiotherapy (p=0.023) and the development of a carotid blowout syndrome. Carotid blowout syndrome is an uncommon complication in patients treated by larynx tumours. According to our results, patient underwent radiotherapy and patients treated with open surgical procedures with pharyngeal opening have a major risk to develop this kind of complication. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  11. Speech perception in noise in unilateral hearing loss.

    PubMed

    Mondelli, Maria Fernanda Capoani Garcia; Dos Santos, Marina de Marchi; José, Maria Renata

    2016-01-01

    Unilateral hearing loss is characterized by a decrease of hearing in one ear only. In the presence of ambient noise, individuals with unilateral hearing loss are faced with greater difficulties understanding speech than normal listeners. To evaluate the speech perception of individuals with unilateral hearing loss in speech perception with and without competitive noise, before and after the hearing aid fitting process. The study included 30 adults of both genders diagnosed with moderate or severe sensorineural unilateral hearing loss using the Hearing In Noise Test - Hearing In Noise Test-Brazil, in the following scenarios: silence, frontal noise, noise to the right, and noise to the left, before and after the hearing aid fitting process. The study participants had a mean age of 41.9 years and most of them presented right unilateral hearing loss. In all cases evaluated with Hearing In Noise Test, a better performance in speech perception was observed with the use of hearing aids. Using the Hearing In Noise Test-Brazil test evaluation, individuals with unilateral hearing loss demonstrated better performance in speech perception when using hearing aids, both in silence and in situations with a competing noise, with use of hearing aids. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  12. Auditory and language skills of children using hearing aids.

    PubMed

    Penna, Leticia Macedo; Lemos, Stela Maris Aguiar; Alves, Cláudia Regina Lindgren

    2015-01-01

    Hearing loss may impair the development of a child. The rehabilitation process for individuals with hearing loss depends on effective interventions. To describe the linguistic profile and the hearing skills of children using hearing aids, to characterize the rehabilitation process and to analyze its association with the children's degree of hearing loss. Cross-sectional study with a non-probabilistic sample of 110 children using hearing aids (6-10 years of age) for mild to profound hearing loss. Tests of language, speech perception, phonemic discrimination, and school performance were performed. The associations were verified by the following tests: chi-squared for linear trend and Kruskal-Wallis. About 65% of the children had altered vocabulary, whereas 89% and 94% had altered phonology and inferior school performance, respectively. The degree of hearing loss was associated with differences in the median age of diagnosis; the age at which the hearing aids were adapted and at which speech therapy was started; and the performance on auditory tests and the type of communication used. The diagnosis of hearing loss and the clinical interventions occurred late, contributing to impairments in auditory and language development. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  13. Prevalence of the Helicobacter pylori in the tonsils and adenoids.

    PubMed

    Bayindir, Tuba; Toplu, Yuksel; Otlu, Baris; Yakupogullari, Yusuf; Yildirim, Ozge; Kalcioglu, Mahmut Tayyar

    2015-01-01

    There is an ongoing debate about the existence and effects of Helicobacter pylori (Hp) in adenotonsillar tissue. A clinical study was conducted to assess the existence of Hp in the adenoid and/or adenotonsillar tissues, which were surgically excised due to chronic adenotonsillitis. Phosphoglucosamine mutase gene for the detection of Hp and cytotoxin-associated gene as virulence gene were examined in 84 adenotonsillar tissues obtained from 64 patients and patients' serum by using polymerase chain reaction. Hp IgG was detected in 57 (89%) patients' serum. A total of seven tissue samples from 64 patients (10.9%) were found positive for Hp DNA, of which five were adenoids and two were tonsil tissues. All polymerase chain reaction positive samples were also positive for the cytotoxin-associated gene, which is a virulence determinant for the organism. This study suggests that children are exposed to Hp at an early age of their life in this province. Hp may have a role in the pathogenesis of chronic adenotonsillitis, especially in endemic areas. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  14. Tinnitus and cell phones: the role of electromagnetic radiofrequency radiation.

    PubMed

    Medeiros, Luisa Nascimento; Sanchez, Tanit Ganz

    2016-01-01

    Tinnitus is a multifactorial condition and its prevalence has increased on the past decades. The worldwide progressive increase of the use of cell phones has exposed the peripheral auditory pathways to a higher dose of electromagnetic radiofrequency radiation (EMRFR). Some tinnitus patients report that the abusive use of mobiles, especially when repeated in the same ear, might worsen ipsilateral tinnitus. The aim of this study was to evaluate the available evidence about the possible causal association between tinnitus and exposure to electromagnetic waves. A literature review was performed searching for the following keywords: tinnitus, electromagnetic field, mobile phones, radio frequency, and electromagnetic hypersensitivity. We selected 165 articles that were considered clinically relevant in at least one of the subjects. EMRFR can penetrate exposed tissues and safety exposure levels have been established. These waves provoke proved thermogenic effects and potential biological and genotoxic effects. Some individuals are more sensitive to electromagnetic exposure (electrosensitivity), and thus, present earlier symptoms. There may be a common pathophysiology between this electrosensitivity and tinnitus. There are already reasonable evidences to suggest caution for using mobile phones to prevent auditory damage and the onset or worsening of tinnitus. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  15. Correlation between presence of Leishmania RNA virus 1 and clinical characteristics of nasal mucosal leishmaniosis.

    PubMed

    Ito, Marcos Massayuki; Catanhêde, Lilian Motta; Katsuragawa, Tony Hiroshi; Silva Junior, Cipriano Ferreira da; Camargo, Luis Marcelo Aranha; Mattos, Ricardo de Godoi; Vilallobos-Salcedo, Juan Miguel

    2015-01-01

    Mucosal leishmaniosis (ML) is a severe clinical form of leishmaniosis. Complex factors related to the parasite and the host are attributed to the development of mucosal lesions. Leishmania RNA virus 1 (LRV1) can disrupt immune response, and may be the main determinant of severity of the disease; it should be investigated. To study the existence of clinical differences between patients with ML with endosymbiosis by LRV1 and. those without it. A cross-sectional cohort study with clinical evaluation, polymerase chain reaction (PCR) detection of Leishmania, species classification, and search of LRV1 was performed. Only patients with confirmed diagnosis of ML by positive PCR and with nasal mucosa injuries were included in this analysis. Out of 37 patients, 30 (81.1%) were diagnosed with Leishmania braziliensis, five (13.5%) with Leishmania guyanensis, and two (5.4%) with mixed infection of L. braziliensis and L. guyanensis. LVR1 virus was present in 26 (70.3%) of the cases. Correlation between clinical phenotype and presence of LRV1 was not observed, although the frequency of the virus is two-fold higher in mucosal lesions than that found in the literature on skin lesions in the same geographical area. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  16. Polymorphisms in chronic rhinosinusitis with nasal polyps - a systematic review.

    PubMed

    Dinarte, Vanessa Ramos Pires; Santos, Anemari Ramos Dinarte Dos; Araújo, Luiza Ferreira de; Reis, Mariah Guieiro Alves Dos; Tamashiro, Edwin; Valera, Fabiana Cardoso Pereira; Silva Júnior, Wilson Araújo da; Anselmo-Lima, Wilma Terezinha

    2017-03-23

    Chronic rhinosinusitis with nasal polyps is a multifactorial disease with a complex pathophysiology involving multiple genetic and environmental factors. The purpose of this work review is to focus on the importance of genetic studies in chronic rhinosinusitis with nasal polyps besides the several barriers that exists for its understanding. A systematic review on studies of association between single nucleotide polymorphisms and chronic rhinosinusitis with nasal polyps based on a PubMed/Medline and Periódicos CAPES search of all articles published between January 2005 and January 2015 was made. The search was guided on studies containing the terms polymorphisms, rhinosinusitis, and polyps. Two studies found an association of MMP-9 and MMP-2 polymorphisms and chronic rhinosinusitis with nasal polyps, but not in patients with recurrent nasal polyps. Other studies found an association of nasal polyps with MMP-9 polymorphisms, but not with MMP-2 ones. There is evidence of an association of LTC4S, NOS2A, PTGDR, MET, COX-2, OSF-2, and LF polymorphisms and the risk of developing nasal polyps, especially when combined with chronic allergic rhinitis and asthma. Genetic studies on chronic rhinosinusitis with nasal polyps are promising and may offer insights into its pathophysiology, which is likely affected by multiple genetic factors. Copyright © 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  17. Function of obturator prosthesis after maxillectomy and prosthetic obturator rehabilitation.

    PubMed

    Chen, Cheng; Ren, Wenhao; Gao, Ling; Cheng, Zheng; Zhang, Linmei; Li, Shaoming; Zhi, Pro Ke-qian

    2016-01-01

    Maxillary defects are usually rehabilitated by a prosthetic obturator. This study aimed to evaluate the functioning of obturators prosthesis in patients with unilateral defects after maxillectomy. Of 49 patients, 28 underwent to maxillectomy as a result of tumor ablative surgery, and acquired unilateral maxillary defects. Evaluation of the function was performed by applying the Obturator Functional Scale (OFS). From a total of 49 patients, 28 were treated as follows: 9 with a conventional retained obturator prosthesis (COP), 11 (39%) with an enhanced retentive obturator prosthesis with stud attachment (POP) and 8 (28%) with an enhanced retentive obturator prosthesis with magnetic attachment (POM). The mean OFS score was 80. Scores on functions of speech, swallowing and chewing reached statistical significances (p<0.05) among these three subgroups. Comparing COP and MOP groups, the scores of OFS in the domains of "Speech-ability to speak in public" and "Swallowing-leakage with liquids" were significantly higher in AOP group. Comparing COP group, the scores of OFS in "Swallowing-leakage with solid" and "Chewing/eating" domains were increased significantly (p<0.05) both in MOP and AOP groups. Obturator prosthesis improves oral function of patients after maxillary defects; the retention of the obturator prosthesis enhanced by the addition of attachments showed more benefits in oral function. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  18. Postural control assessment in students with normal hearing and sensorineural hearing loss.

    PubMed

    Melo, Renato de Souza; Lemos, Andrea; Macky, Carla Fabiana da Silva Toscano; Raposo, Maria Cristina Falcão; Ferraz, Karla Mônica

    2015-01-01

    Children with sensorineural hearing loss can present with instabilities in postural control, possibly as a consequence of hypoactivity of their vestibular system due to internal ear injury. To assess postural control stability in students with normal hearing (i.e., listeners) and with sensorineural hearing loss, and to compare data between groups, considering gender and age. This cross-sectional study evaluated the postural control of 96 students, 48 listeners and 48 with sensorineural hearing loss, aged between 7 and 18 years, of both genders, through the Balance Error Scoring Systems scale. This tool assesses postural control in two sensory conditions: stable surface and unstable surface. For statistical data analysis between groups, the Wilcoxon test for paired samples was used. Students with hearing loss showed more instability in postural control than those with normal hearing, with significant differences between groups (stable surface, unstable surface) (p<0.001). Students with sensorineural hearing loss showed greater instability in the postural control compared to normal hearing students of the same gender and age. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  19. Morphological analysis of the vestibular system of guinea pigs poisoned by organophosphate.

    PubMed

    Cogo, Lícia Assunção; Santos Filha, Valdete Alves Valentins dos; Murashima, Adriana de Andrade Batista; Hyppolito, Miguel Angelo; Silveira, Aron Ferreira da

    2016-01-01

    The vestibular system is responsible for body balance. There are substances that damage it, causing dizziness; these are termed vestibulotoxic substances. Agrochemicals have been investigated for ototoxicity because of studies that identified dizziness as a recurrent symptom among rural workers' complaints. To histopathologically evaluate the vestibular system in guinea pigs exposed to an organophosphate, and to identify the drug's effects on this system. Experimental clinical study. Eighteen guinea pigs were used; six of them poisoned with the organophosphate chlorpyrifos at doses of 0.5mg/kg/day and seven of them at 1mg/kg/day; and a control group of five guinea pigs was exposed to distilled water, all for 10 consecutive days. Later, ciliary tufts of saccule and utricle maculae were counted by scanning electron microscopy. Comparing the groups, a one-way ANOVA test for the variable "saccule" (p=0.0569) and a Kruskal-Wallis test for the variable "utricle" (p=0.8958) were performed, revealing no difference among groups in both variables. The histopathologic analysis of the vestibular system of guinea pigs exposed to an organophosphate showed no difference in the amount of ciliary tufts of saccule and utricle maculae at the doses tested, although the result for the variable "saccule" was considered borderline, showing a trend for significance. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  20. Evaluation of postural control in unilateral vestibular hypofunction.

    PubMed

    Quitschal, Rafaela Maia; Fukunaga, Jackeline Yumi; Ganança, Maurício Malavasi; Caovilla, Heloísa Helena

    2014-01-01

    Patients with vestibular hypofunction, a typical finding in peripheral vestibular disorders, show body balance alterations. To evaluate the postural control of patients with vertigo and unilateral vestibular hypofunction. This is a clinical cross-sectional study. Twenty-five patients with vertigo and unilateral vestibular hypofunction and a homogeneous control group consisting of 32 healthy individuals were submitted to a neurotological evaluation including the Tetrax Interactive Balance System posturography in eight different sensory conditions. For different positions, vertiginous patients with unilateral vestibular hypofunction showed significantly higher values of general stability index, weight distribution index, right/left and tool/heel synchronizations, Fourier transformation index and fall index than controls. Increased values in the indices of weight distribution, right/left and tool/heel synchronizations, Fourier transformation and fall risk characterize the impairment of postural control in patients with vertigo and unilateral vestibular hypofunction. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  1. Evaluation of postural balance in mild cognitive impairment through a three-dimensional electromagnetic system.

    PubMed

    Borges, Ana Paula Oliveira; Carneiro, José Ailton Oliveira; Zaia, José Eduardo; Carneiro, Antonio Adilton Oliveira; Takayanagui, Osvaldo Massaiti

    2016-01-01

    Elderly people with cognitive impairment are at greater risk for falls; thus, an understanding of the earliest stages of cognitive decline is necessary. To compare postural balance between elderly people with and without mild cognitive impairment using a three-dimensional system. Thirty elderly people with mild cognitive impairment and thirty healthy elderly subjects were selected. Static posturography was performed using three-dimensional electromagnetic equipment and the following parameters were evaluated: maximum displacement, mean speed and total trajectory. Open- and closed-eye stabilometric variable comparisons between groups and within each group were carried out, and a relationship between the Mini Mental State Examination and the total trajectory of all elderly subjects was determined. The analysis among open- and closed-eye conditions showed a significant difference in maximum anteroposterior displacement in the control group and a significant difference in all stabilometric variables in the mild cognitive impairment group. A significant difference between the groups in all variables in the closed-eye condition was observed. There was a strong correlation between cognitive performance and total trajectory. Evaluations showed decrease in balance in elderly people with mild cognitive impairment. Presence of anteroposterior displacement can be an early sign of postural control impairment, and the evaluation with visual restriction can be useful in detecting small postural instabilities. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  2. Vestibular rehabilitation with visual stimuli in peripheral vestibular disorders.

    PubMed

    Manso, Andréa; Ganança, Mauricio Malavasi; Caovilla, Heloisa Helena

    2016-01-01

    Visual stimuli can induce vestibular adaptation and recovery of body balance. To verify the effect of visual stimuli by digital images on vestibular and body balance rehabilitation of peripheral vestibular disorders. Clinical, randomized, prospective study. Forty patients aged between 23 and 63 years with chronic peripheral vestibular disorders underwent 12 sessions of rehabilitation with visual stimuli using digital video disk (DVD) (experimental group) or Cawthorne-Cooksey exercises (control group). The Dizziness Handicap Inventory (DHI), dizziness analog scale, and the sensitized Romberg static balance and one-leg stance tests were applied before and after the intervention. Before and after the intervention, there was no difference between the experimental and control groups (p>0.005) regarding the findings of DHI, dizziness analog scale, and static balance tests. After the intervention, the experimental and control groups showed lower values (p<0.05) in the DHI and the dizziness analog scale, and higher values (p<0.05) in the static balance tests in some of the assessed conditions. The inclusion of visual stimuli by digital images on vestibular and body balance rehabilitation is effective in reducing dizziness and improving quality of life and postural control in individuals with peripheral vestibular disorders. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  3. The effects of concurrent cognitive tasks on postural sway in healthy subjects.

    PubMed

    Mujdeci, Banu; Turkyilmaz, Didem; Yagcioglu, Suha; Aksoy, Songul

    2016-01-01

    Keeping balance of the upright stance is a highly practiced daily task for healthy adults and is effectively performed without overt attentional control in most. The purpose of this study was to examine the influence of concurrent cognitive tasks on postural sway in healthy participants. This was a prospective study. 20 healthy volunteer subjects were included. The cognitive and balance tasks were performed separately and then, concurrently. Postural control task consisted of 6 conditions (C) of the Sensory Organization Test. The cognitive task consisted of digit rehearsal task of varying presentation and varying levels of difficulty. A statistically significant difference was noted between dual task and no task for C1, C2, C3 and C4 Sensory Organization Test scores (p<0.05). There was no statistically significant difference between dual task versus non-task for C5, C6 and combined Sensory Organization Test scores (p>0.05). During dual task, increase has been determined in postural sway for C1, C2, C3 and C4 for all presentation modes and difficulty levels of the cognitive tasks. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  4. Subjective visual vertical with the bucket method in Brazilian healthy individuals.

    PubMed

    Ferreira, Maristela Mian; Cunha, Fabiana; Ganança, Cristina Freitas; Ganança, Maurício Malavasi; Caovilla, Heloisa Helena

    2016-01-01

    The capacity of a healthy individual to estimate the true vertical in relation to the Earth when a fluorescent line is aligned in a completely dark room is called the subjective visual vertical. To evaluate subjective visual vertical using the bucket method in healthy Brazilian individuals. Binocular subjective visual vertical was measured in 100 healthy volunteers, 50 females and 50 males. The volunteers indicated the estimated position in which a fluorescent line inside a bucket reached the vertical position. A total of ten repetitions were performed, five clockwise and five counterclockwise. Data were tabulated and analyzed statistically. It was observed that the highest concentration of absolute values of vertical deviation was present up to 3°, regardless of gender, and the vertical deviation did not increase with age. The analysis of the mean of the absolute values of deviations from the vertical of 90% of the sample showed a maximum value of 2.6°, and at the analysis of 95%, the maximum value was 3.4° deviation from the vertical. The bucket method is easy to perform and interpret when assessing the deviation of the subjective visual vertical in relation to the true vertical in healthy Brazilian individuals. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  5. Effects of vibrotactile vestibular substitution on vestibular rehabilitation - preliminary study.

    PubMed

    Brugnera, Cibele; Bittar, Roseli Saraiva Moreira; Greters, Mário Edvin; Basta, Dietmar

    2015-01-01

    Some patients with severe impairment of body balance do not obtain adequate improvement from vestibular rehabilitation (VR). To evaluate the effectiveness of Vertiguard™ biofeedback equipment as a sensory substitution (SS) of the vestibular system in patients who did not obtain sufficient improvement from VR. This was a randomized prospective clinical study. Thirteen patients without satisfactory response to conventional VR were randomized into a study group (SG), which received the vibrotactile stimulus from Vertiguard™ for ten days, and a control group (CG), which used equipment without the stimulus. For pre- and post-treatment assessment, the Sensory Organization Test (SOT) protocol of the Computerized Dynamic Posturography (CDP) and two scales of balance self-perception, Activities-specific Balance Confidence (ABC) and Dizziness Handicap Inventory (DHI), were used. After treatment, only the SG showed statistically significant improvement in C5 (p=0.007) and C6 (p=0.01). On the ABC scale, there was a significant difference in the SG (p=0.04). The DHI showed a significant difference in CG and SG with regard to the physical aspect, and only in the SG for the functional aspect (p=0.04). The present findings show that sensory substitution using the vibrotactile stimulus of the Vertiguard™ system helped with the integration of neural networks involved in maintaining posture, improving the strategies used in the recovery of body balance. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  6. Subjective visual vertical after treatment of benign paroxysmal positional vertigo.

    PubMed

    Ferreira, Maristela Mian; Ganança, Maurício Malavasi; Caovilla, Heloisa Helena

    2016-09-28

    Otolith function can be studied by testing the subjective visual vertical, because the tilt of the vertical line beyond the normal range is a sign of vestibular dysfunction. Benign paroxysmal positional vertigo is a disorder of one or more labyrinthine semicircular canals caused by fractions of otoliths derived from the utricular macula. To compare the subjective visual vertical with the bucket test before and immediately after the particle repositioning maneuver in patients with benign paroxysmal positional vertigo. We evaluated 20 patients. The estimated position where a fluorescent line within a bucket reached the vertical position was measured before and immediately after the particle repositioning maneuver. Data were tabulated and statistically analyzed. Before repositioning maneuver, 9 patients (45.0%) had absolute values of the subjective visual vertical above the reference standard and 2 (10.0%) after the maneuver; the mean of the absolute values of the vertical deviation was significantly lower after the intervention (p<0.001). There is a reduction of the deviations of the subjective visual vertical, evaluated by the bucket test, immediately after the particle repositioning maneuver in patients with benign paroxysmal positional vertigo. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  7. Cervical vestibular evoked myogenic potentials in children.

    PubMed

    Pereira, Alcione Botelho; Silva, Gabriela Souza de Melo; Assunção, Aída Regina Monteiro; Atherino, Ciriaco Cristóvão Tavares; Volpe, Fernando Madalena; Felipe, Lilian

    2015-01-01

    Cervical vestibular evoked myogenic potential is a test used in neurotological examination. It verifies the integrity of vestibular function through a muscular response evoked by an acoustic stimulation which activates the saccular macula. Normal standards in adults have been established, however, there are few published data on the normal responses in children. To establish normal standards for vestibular myogenic responses in children without neurotological complaints. This study's design is a cohort with cross-sectional analysis. The sample consisted of 30 subjects, 15 females (50%) and 15 males (50%). The age of the subjects ranged between 8 and 13 years, with a mean of 10.2 (± 1.7). P1 peak showed an average latency of 17.26 (± 1.78)ms and a mean amplitude of 49.34 (± 23.07)μV, and the N2 peak showed an average latency of 24.78 (± 2.18)ms and mean amplitude of 66.23 (± 36.18)μV. P1-N2 mean amplitude was 115.6 (± 55.7)μV. There were no statistically significant differences when comparing by gender or by laterality. We established normal values of cervical myogenic vestibular responses in children between 8 and 13 years without neurotological complaints. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  8. Osteitis and mucosal inflammation in a rabbit model of sinusitis.

    PubMed

    Campos, Carlos Augusto Correia de; Dolci, Eduardo Landini Lutaif; Silva, Leonardo da; Dolci, José Eduardo Lutaif; Campos, Carlos Alberto Herrerias de; Dolci, Ricardo Landini Lutaif

    2015-01-01

    Several experimental studies have shown osteitis after the onset of sinusitis, supporting the idea that bone involvement could participate in the dissemination and perpetuation of this inflammatory disease. However, procedures commonly performed for the induction of sinusitis, such as antrostomies, can trigger sinusitis by themselves. To evaluate osteitis in an animal model of sinusitis that does not violate the sinus directly and verify whether this is limited to the induction side, or if it affects the contralateral side. Experimental study in which sinusitis was produced by inserting an obstructing sponge into the nasal cavity of 20 rabbits. After defined intervals, the animals were euthanized and maxillary sinus samples were removed for semi-quantitative histological analysis of mucosa and bone. Signs of bone and mucosal inflammation were observed, affecting both the induction and contralateral sides. Statistical analysis showed correlation between the intensity of osteitis on both sides, but not between mucosal and bone inflammation on the same side, supporting the theory that inflammation can spread through bone structures, regardless of mucosal inflammation. This study demonstrated that in an animal model of sinusitis that does not disturb the sinus directly osteitis occurs in the affected sinus and that it also affects the contralateral side. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  9. Evaluation of cytokines produced by β-hemolytic streptococcus in acute pharyngotonsillitis.

    PubMed

    Leão, Sydney Correia; Leal, Ivanna Oliveira; Rocha, Hertaline Menezes do Nascimento; Rodrigues, Tania Maria de Andrade

    2015-01-01

    The most common pathogen in bacteria lpharyngotonsillitis is group A β-hemolytic streptococcus, although groups B, C, F,and G have also been associated with pharyngotonsillitis. To assess the levels of the cytokines TNF-α, IL-6,IL-4, and IL-10 in bacterial pharyngotonsillitis caused by group A and non-A (groups B, C, F and G) β-hemolytic streptococcus. The study was conducted at a pediatric emergency care unit. The sample comprised children (5-9 years old) with acute bacterial pharyngotonsillitis diagnosed between December of 2011 and May of 2012. The research involved collection of blood samples from the patients, enzyme-linked immunosorbent assay detection of TNF-α, IL-6,IL-4, and IL-10, and collection of two oropharyngeal swabs for bacterial isolation. Additionally, the medical history of the study participants was also collected. In the studied group (mean age: 5.93 years), higher pharyngotonsillitis incidence was observed in the female gender (64.76%). Higher incidence of tonsillar exudates was observed with groups A and C. No statistically significant differences in cytokine levels were observed among groups. However, the group A and the control group showed a difference in the IL-6 level (p=0.0016). The Groups A and C showed higher cytokine levels than the Groups B and control, suggesting similar immunological patterns. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  10. Anatomical study of minor alterations in neonate vocal folds.

    PubMed

    Silva, Adriano Rezende; Machado Jr, Almiro José; Crespo, Agrício Nubiato

    2014-01-01

    Minor structural alterations of the vocal fold cover are frequent causes of voice abnormalities. They may be difficult to diagnose, and are expressed in different manners. Cases of intracordal cysts, sulcus vocalis, mucosal bridge, and laryngeal micro-diaphragm form the group of minor structural alterations of the vocal fold cover investigated in the present study. The etiopathogenesis and epidemiology of these alterations are poorly known. To evaluate the existence and anatomical characterization of minor structural alterations in the vocal folds of newborns. 56 larynxes excised from neonates of both genders were studied. They were examined fresh, or defrosted after conservation via freezing, under a microscope at magnifications of 25× and 40×. The vocal folds were inspected and palpated by two examiners, with the aim of finding minor structural alterations similar to those described classically, and other undetermined minor structural alterations. Larynges presenting abnormalities were submitted to histological examination. Six cases of abnormalities were found in different larynges: one (1.79%) compatible with a sulcus vocalis and five (8.93%) compatible with a laryngeal micro-diaphragm. No cases of cysts or mucosal bridges were found. The observed abnormalities had characteristics similar to those described in other age groups. Abnormalities similar to sulcus vocalis or micro-diaphragm may be present at birth. Copyright © 2014 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  11. Endoscopic repair of cerebrospinal fluid rhinorrhea.

    PubMed

    Kljajić, Vladimir; Vuleković, Petar; Vlaški, Ljiljana; Savović, Slobodan; Dragičević, Danijela; Papić, Vladimir

    Nasal liquorrhea indicates a cerebrospinal fluid fistula, an open communication between the intracranial cerebrospinal fluid and the nasal cavity. It can be traumatic and spontaneous. The aim of this study was to assess the outcome of endoscopic repair of cerebrospinal fluid fistula using fluorescein. This retrospective study included 30 patients of both sexes, with a mean age of 48.7 years, treated in the period from 2007 to 2015. All patients underwent lumbar administration of 5% sodium fluorescein solution preoperatively. Fistula was closed using three-layer gra