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1
Ductus venosus in the first trimester: contribution to screening of chromosomal, cardiac defects and monochorionic twin complications.
2010-06-22

In the first trimester the ductus venosus can be easily identified with color Doppler and a ductus venosus waveform can be obtained by pulsed Doppler. At 11-13 weeks the prevalence of abnormal a-wave in the ductus venosus is inversely related to fetal crown-rump length and ...

PubMed

2
Miscarriage

... of miscarriage in the first trimester is a chromosomal abnormality in the fetus. This is usually results from ...

MedlinePLUS

3
Ultrasound diagnosis of structural abnormalities in the first trimester.
2002-04-01

The advances in ultrasound technology have made it possible to identify fetal structural abnormalities and genetic syndromes in the first trimester. First trimester prenatal diagnosis of fetal central nervous system, renal, gastrointestinal, cardiac, and skeletal ...

PubMed

4
First trimester detection of structural abnormalities and the role of aneuploidy markers.
2011-08-15

OBJECTIVE: To determine the sensitivity of first-trimester ultrasound for diagnosing different structural anomalies in chromosomally normal pregnancies, and the role of aneuploidy markers in the detection of abnormalities. METHODS: This was a retrospective study including chromosomally normal singleton pregnancies with a 11-14 week scan performed in our center during the ...

PubMed

5
First-trimester ductus venosus screening for cardiac defects: a meta-analysis.
2011-06-14

Please cite this paper as: Papatheodorou S, Evangelou E, Makrydimas G, Ioannidis J. First-trimester ductus venosus screening for cardiac defects: a meta-analysis. BJOG 2011; DOI: 10.1111/j.1471-0528.2011.03029.x. Background� Heart defects are the most common congenital abnormalities. Objective? We aimed to evaluate in a meta-analysis ...

PubMed

6
Promises and pitfalls of first trimester sonographic markers in the detection of fetal aneuploidy.
2009-01-01

First trimester sonographic markers are the only markers achieving detection rates above 50% in the prenatal detection of fetal aneuploidy. Although potentially they are the best markers, some concerns have arisen about its clinical application. Pitfalls may be due to inability to examine the markers, incorrect assessment, or incorrect interpretation of ...

PubMed

7
First trimester abnormal profile and facial angle. Early features of anterior cephalocele.
2010-10-01

We present a first trimester scan suspicious of fetal anterior cephalocele due to the finding of a fetus with an abnormal profile and an abnormal facial angle, with a subsequent early confirmation at 16 weeks of gestation. PMID:19968591

PubMed

8
First Trimester Screening for Chromosomal Abnormalities by Integrated Application of Nuchal Translucency, Nasal Bone, Tricuspid Regurgitation, Ductus Venosus Flow Combined with Maternal Serum Free ?-HCG and PAPP-A: A 5-Year Prospective Study.
2011-07-26

OBJECTIVE: To investigate the performance of first trimester screening for Chromosomal Abnormalities by integrated application of Nuchal Translucency, Nasal Bone, Tricuspid Regurgitation, Ductus Venosus Flow combined with maternal serum free ?-hCG and PAPP-A at a one stop clinic for assessment of risk (OSCAR) ...

PubMed

9
Prenatal sonographic features of fetuses in trisomy 13 pregnancies. IV.
2010-03-01

Prenatal ultrasound is a powerful tool to detect structural abnormalities associated with the fetuses in trisomy 13 pregnancies. This article provides a comprehensive review of the prenatal sonographic markers of trisomy 13 in the first trimester, including fetal nuchal translucency thickness, fetal heart rate, fetal nasal bone, fetal ...

PubMed

10
[Discordant nuchal translucency in monochorionic twin pregnancy. A case report].
2006-06-01

The twin-to-twin transfusion syndrome is a serious anomaly occurring from vessels anastomosis between the fetal-planetary circulations of monochorionic twin pregnancies with a high perinatal morbidity and mortality. In the first trimester, the presence of discordant increase of the nuchal translucency associated a reverse blood flow in the ...

PubMed

11
Fetal cardiac evaluation at 11-14 weeks by experienced obstetricians in a low-risk population.
2011-07-29

OBJECTIVE: The aim of this study was to evaluate the detection rate of congenital heart diseases (CHD) in a low-risk population by performing cardiac evaluation during the first-trimester screening for chromosomal abnormalities. In this context, the role of four-chamber view, tricuspid regurgitation and abnormal ductus venosus flow in ...

PubMed

12
Prenatal diagnosis of trisomy 9.
2011-07-01

We present a foetus affected by trisomy 9, a rare chromosomal disorder, which was diagnosed in a low-risk patient during the first trimester of pregnancy. The finding of multiple structural foetal anomalies at the first trimester screening prompted chorionic villus sampling. Evaluation of the quantitative ...

PubMed

13
First trimester sonographic diagnosis of ectopia cordis: a case report and review of the literature.
2011-06-01

A case of ectopia cordis (EC) with gastroschisis in a 27-year-old primigravida was diagnosed at 10(3/7) weeks of gestation. The pregnancy was terminated by suction dilatation and curettage. With the increasing use of first trimester ultrasonography, early detection of fetal abnormalities is becoming more frequent. We review other ...

PubMed

14
Adverse Pregnancy Outcomes after Abnormal First Trimester Screening for Aneuploidy
2010-09-01

Women with abnormal first trimester screening but with a normal karyotype are at risk for adverse pregnancy outcomes. A nuchal translucency >3.5mm is associated with an increased risk of subsequent pregnancy loss, fetal infection, fetal heart abnormalities and other structural abnormalities. ...

PubMed Central

15
Ultrasound assessment of premenopausal bleeding.
2011-03-01

Vaginal bleeding is the most common cause of emergency care in the first trimester of pregnancy and accounts for the majority of premenopausal bleeding cases. Ultrasound evaluation combined with a quantitative beta human chorionic gonadotropin test is an established diagnostic tool to assess these patients. Spontaneous abortion because of genetic ...

PubMed

16
Ductus venosus revisited: a Doppler blood flow evaluation in the first trimester of pregnancy.
1997-01-01

The functional role of the fetal ductus venosus (DV) is still poorly established. Few reports are available in the literature concerning assessment of fetal venous return during the late first trimester of pregnancy. Our objective was to determine the normal Doppler blood velocity waveform in the human fetal DV as early as 10-13 weeks ...

PubMed

17
CMA abortion survey.
1983-08-01

Responses to the question as to whether abortions should be performed at the woman's request during the first trimester of pregnancy were evenly divided. There was support for abortion on socioeconomic grounds, during the first trimester, from 61.5% of the respondents. Termination of pregnancy beyond the ...

PubMed Central

18
The Isolation and Characterization of a Novel Telomerase Immortalized First Trimester Trophoblast Cell Line, Swan 71
2009-09-18

Studies using first trimester trophoblast cells may be limited by the inability to obtain patient samples and/or adequate cell numbers. First trimester trophoblast cell lines have been generated by SV40 transformation or similar methods, however, this approach is known to induce phenotypic and karyotypic ...

PubMed Central

19
First Trimester Fetal Echocardiography: Which Planes and Defects can be Displayed During the Daily Routine in a Prenatal Medicine Unit?
2011-08-01

PURPOSE: The objective of this study was to evaluate which cardiac planes and malformations can be visualized by first trimester fetal echocardiography during the daily routine in a prenatal medicine unit. MATERIALS AND METHODS: From October 2007 to June 2009, all fetuses with a crown rump length between 45 and 84�mm were included in the study. The fetal ...

PubMed

20
Value and Limitations of Obstetrical Ultrasound
1992-01-01

First-trimester ultrasound examination is of value to establish dates or assess fetal viability in cases of bleeding but provides limited information on the well-being of the fetus. At between 16 and 20 weeks' gestation, examination of fetal anatomy allows many abnormalities to be detected. Third-trimester ultrasound examination is predominantly for follow ...

PubMed Central

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21
Sonographic features of ileal duplication cyst at 12 weeks.
2002-12-01

Enteric duplication cyst is a congenital abnormality that is believed to arise from abnormal recanalization of the bowel during embryogenesis. Previous reports suggest that the condition may be suspected prenatally by sonographic demonstration of an intra-abdominal cystic mass in the second and third trimesters. We present the sonographic features of a ...

PubMed

22
Genetics Home Reference: Char syndrome

... distinctive facial appearance, a heart defect called patent ductus arteriosus, and hand abnormalities. Most people with Char ... triangular-shaped mouth, and thick, prominent lips. Patent ductus arteriosus is a common heart defect in newborns, ...

MedlinePLUS

23
Contingent screening for down syndrome completed in the first trimester: a multicenter study.
2011-06-14

OBJECTIVE: To assess a new contingent screening strategy for Down Syndrome completed in the first trimester. METHODS: The First-trimester screening combining nuchal translucency and serum analytes (Combined Test) was offered to pregnant women who presented for prenatal care during the first trimester to nine health ...

PubMed

24
Early Signs of Cardiac Failure: A Clue for Parvovirus Infection Screening in the First Trimester?
2011-02-16

Parvovirus B19 is a small single-stranded DNA virus and a potent inhibitor of erythropoiesis due to its cytotoxicity to erythroid progenitor cells. Although adult disease is generally mild, fetal parvovirus B19 infection can cause spontaneous abortion in early pregnancy and aplastic anemia, nonimmune hydrops fetalis and in utero fetal demise. The prevalence of parvovirus B19 maternal infection ...

PubMed

25
Ocular manifestations in fetal alcohol syndrome.
1991-09-01

Eight children with the fetal alcohol syndrome are described with ocular anomalies. They all had a strong history of maternal alcohol abuse throughout pregnancy, especially in the first trimester. All the children had eye abnormalities. These included external eye lesions, Peters' anomaly, lens opacification, ocular motility disorders, ...

PubMed Central

26
Headaches and women: treatment of the pregnant and lactating migraineur.

Migraine is a hormonally sensitive episodic headache disorder which may worsen during the first trimester, but usually improves during later pregnancy. Its treatment can be difficult because of the risks of injury to the fetus and newborn. These risks include teratogenicity, embryo mortality, fetal growth abnormalities, and perinatal ...

PubMed

27
First-Trimester Follistatin-Like-3 Levels in Pregnancies Complicated by Subsequent Gestational Diabetes Mellitus
2010-03-10

OBJECTIVETo determine whether maternal levels of follistatin-like-3 (FSTL3), an inhibitor of activin and myostatin involved in glucose homeostasis, are altered in the first trimester of pregnancies complicated by subsequent gestational diabetes mellitus (GDM).RESEARCH DESIGN AND METHODSThis was a nested case-control study of subjects enrolled in a ...

PubMed Central

28
A prospective two years study of first trimester screening for Down Syndrome

Introduction: Nowadays maternal age of pregnant women has increased in most developed countries. The rate of women above 35 years old constitutes about 15% of pregnancies.Aim: The aim of our study is to prove that by first trimester screening, the number of women who have indication for invasive prenatal diagnostic procedure is significantly ...

PubMed Central

29
Malformations, withdrawal manifestations, and hypoglycaemia after exposure to valproate in utero.
1993-09-01

An unselected series is presented of 17 infants born to epileptic mothers and exposed to sodium valproate during pregnancy. Nine infants had minor abnormalities and of these infants five also had major malformations, described as the 'fetal valproate syndrome'. The most frequent malformation was congenital heart disease. Nine of the infants had manifestations of withdrawal, ...

PubMed Central

30
Effects of equine herpesvirus-9 infection in pregnant mice and hamsters.
2010-09-01

The pathogenicity of equine herpesvirus (EHV)-9, a new neurotropic equine herpesvirus isolated from gazelles, was assessed in pregnant rodents (mice and hamsters) following intranasal inoculation. The pregnant female mice and hamsters were inoculated with EHV-9 in the early or late trimesters. The inoculated animals exhibited mild to severe neurological signs and gave birth to dead or undersized ...

PubMed

31
First trimester fetal karyotyping: one thousand diagnoses.
1986-03-01

Cytogenetic investigations for diagnostic purposes were performed on 1000 first trimester samples of chorionic villi (CVS) in two laboratories using similar techniques. Fetal karyotyping was the primary indication for CVS in 912 and maternal age was the major indication in 758 of them. The risk category "previous child/fetus with chromosome ...

PubMed

32
Screening for fetal aneuploidies at 11 to 13 weeks.
2011-01-01

Effective screening for major aneuploidies can be provided in the first trimester of pregnancy. Screening by a combination of fetal nuchal translucency and maternal serum free-?-human chorionic gonadotrophin and pregnancy-associated plasma protein-A can identify about 90% of fetuses with trisomy 21 and other major aneuploidies for a false-positive rate of ...

PubMed

33
Prenatal sonographic features of fetuses in trisomy 13 pregnancies (I).
2009-09-01

Prenatal ultrasound is a powerful tool for detecting structural abnormalities in fetuses in trisomy 13 pregnancies. This article provides a comprehensive review of the prenatal sonographic features of trisomy 13, including the major structural abnormalities observed during the first trimester (omphalocele, ...

PubMed

34
Fetal growth in early pregnancy and risk of delivering low birth weight infant: prospective cohort study
2007-04-21

Objective To determine if first trimester fetal growth is associated with birth weight, duration of pregnancy, and the risk of delivering a small for gestational age infant.Design Prospective cohort study of 38?033 pregnancies between 1999 and 2003.Setting 15 centres representing major regions of the United States.Participants 976 women from the original ...

PubMed Central

35
[Endometrial ossification: a report of four cases and literature review].
2007-03-01

Endometrial ossification is a rare endometrial pathology. Its predisposing factors include history of uterine curettage to metabolic abnormalities. It usually presents in patients with secondary infertility and history of first trimester pregnancy loss, accompanied by severe dysmenorrhea and dyspareunia. The diagnosis is suspected by ...

PubMed

36
First Trimester Breastfeeding Education: Can Early Education ...
2004-05-01

... Accession Number : ADA423783. Title : First Trimester Breastfeeding Education: Can Early Education Improve Duration in the Military Community? ...

DTIC Science & Technology

37
[Epigenetic inactivation of the RB1 gene as a factor of genomic instability: a possible contribution to etiology of chromosomal mosaicism during human embryo development].
2008-11-01

The methylation status of the cell cycle control gene RB1 has been studied in placental tissues of spontaneous abortions of the first trimester of pregnancy with mosaic variants of numerical chromosomal abnormalities verified by a molecular genetic examination. Aberrant methylation of the gene promoter region has been revealed for the ...

PubMed

38
Screening for chromosomal anomalies: first or second trimester, biochemical or ultrasound?
2003-09-01

Prenatal diagnosis pf chromosomal abnormalities can be accurately made by cytogenetic studies of samples obtained from invasive procedures, such as amniocentesis or chorionic villus sampling. Because these procedures are associated with a risk of miscarriage, the common approach is to perform non-invasive test to define an individual woman's risk of having a chromosomal ...

PubMed

39
Polyhydramnios with bidirectional fetal ductus arteriosus flow in a fetus with congenital diaphragmatic hernia: case report.
2010-11-16

The etiology of polyhydramnios may be attributed to either increased production of amniotic fluid (fetal polyuria or high-output cardiac failure) or decreased fetal swallowing (obstruction or neurological impairment). Although idiopathic polyhydramnios occurs in nearly half of all cases, it is often associated with fetal abnormalities. Fetal ductus ...

PubMed

40
The effect of hypoxia in development.
2007-09-01

There is increasing evidence that the oxygen supply to the human embryo in the first trimester is tightly controlled, suggesting that too much oxygen may interfere with development. The use of hypoxia probes in mammalian embryos during the organogenic period indicates that the embryo is normally in a state of partial hypoxia, and this may be essential to ...

PubMed

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41
Doppler ultrasonographic evaluation of abnormal pregnancies in the first trimester.

Doppler examination of uteroplacental vessels was performed in the first trimester of pregnancy in 111 women with a normal pregnancy outcome and in 10 women with pregnancies that had or subsequently failed due to anembryonic pregnancy (N = 4), missed abortion (N = 1), subsequent spontaneous abortion of live fetus (N = 2), and ectopic pregnancy (N = 3). ...

PubMed

42
Aneuploidy in abortuses following IVF and ICSI
2009-02-18

PurposeTo compare aneuploidy rates in first trimester pregnancy losses following IVF � ICSI.MethodsA retrospective cohort analysis of karyotypes of abortuses following conventional IVF (n = 159) and ICSI (n = 196).Results50.1% of losses were found to be cytogenetically abnormal among all patients undergoing IVF � ICSI. A ...

PubMed Central

43
Patent ductus arteriosus: MedlinePlus Medical Encyclopedia
2011-08-09

(The word "patent" means open.) The condition leads to abnormal blood flow between the aorta and pulmonary artery, two major blood vessels that carry blood from the heart. Causes...

Science.gov Websites

44
PREDUCTAL AORTIC COARCTATION AND PATENT DUCTUS ARTERIOSUS IN A SUMATRAN TIGER (PANTHERA TIGRIS SUMATRAE) CUB

... the second cub's death. Abnormalities of the aorta, heart, and lungs were observed. Immediately distal to ... flow from the pulmonary trunk to the descending aorta. The atria and associated systemic and p...

NBII National Biological Information Infrastructure

45
Pentalogy of Cantrell: report of a case with consanguineous parents.

Pentalogy of Cantrell is a syndrome evidencing five anomalies: a midline, upper abdominal wall abnormality; lower sternal defect; anterior diaphragmatic defect; diaphragmatic pericardial defect, and congenital abnormalities of the heart. Its prevalence is one in every 65,000 live births and a survival rate that is low if the fall the five defects are ...

PubMed

46
The Hospital Incidence and Clinical Significance of Congenital Heart Malformations Resulting from Rubella Embryopathy
1970-02-28

A retrospective study is reported of 75 children with rubella embryopathy syndrome, admitted to the Health Centre for Children, Vancouver General Hospital, during the four-year period from July 1, 1964 to July 1, 1968. Sixty-four of the 75 had cardiovascular malformations, 37 had ophthalmological defects, 31 had nerve deafness and three were mentally retarded. The most common cardiovascular ...

PubMed Central

47
TLR6 Modulates First Trimester Trophoblast Responses to Peptidoglycan1
2008-05-01

Intrauterine bacterial infections are a well-established cause of pregnancy complications. One key observation in a number of abnormal pregnancies is that placental apoptosis is significantly elevated. First trimester trophoblast cells are known to express TLR1 and TLR2 and to undergo apoptosis following exposure to Gram-positive ...

PubMed Central

48
First trimester three-dimensional transvaginal imaging of alobar holoprosencephaly associated with proboscis and hypotelorism (ethmocephaly) in a 46,XX fetus.
2008-03-01

A 19-year-old woman was scanned at 10(+6) weeks gestation by 2D-3D ultrasound. The fetus had a crown-rump length of 40.9 mm, with the cephalic pole occupied by a single cystic cavity measuring 10.6 x 7.7 x 6.8 mm and severe hypotelorism associated with mid-facial hypoplasia. 3D ultrasound confirmed the malformations seen on the 2D scan and enabled the visualization of a proboscis and a low-set ...

PubMed

49
First trimester prediction of small and large for gestation neonates by an integrated model incorporating ultrasound parameters, biochemical indices and maternal characteristics.
2011-09-01

Objective. To identify maternal/pregnancy characteristics, first trimester ultrasound parameters and biochemical indices which are significant independent predictors of small for gestational age (SGA) and large for gestational age (LGA) neonates. Design. Retrospective cross-sectional study. Setting. Two fetal Medicine Units. Population. 4,702 singleton ...

PubMed

50
Beyond oxygen: complex regulation and activity of hypoxia inducible factors in pregnancy
2009-11-19

In the first trimester the extravillous cytotrophoblast cells occlude the uterine spiral arterioles creating a low oxygen environment early in pregnancy, which is essential for pregnancy success. Paradoxically, shallow trophoblast invasion and defective vascular remodelling of the uterine spiral arteries in the first ...

PubMed Central

51
Retrieval of trophoblast cells from the cervical canal for prediction of abnormal pregnancy: a pilot study
2009-09-04

BACKGROUNDFetal cells are shed from the regressing chorionic villi and it is possible to retrieve extravillous cytotrophoblast cells by transcervical sampling. The abundance of trophoblast cells in transcervical samples suggests that this non-invasive approach could distinguish between normal and abnormal pregnancies, such as an ectopic pregnancy (EP) and blighted ovum (BO). ...

PubMed Central

52
Anticipating twin-twin transfusion syndrome in monochorionic twin pregnancy. Is there a role for nuchal translucency and ductus venosus blood flow evaluation at 11-14 weeks?
2000-06-01

Twin-twin transfusion syndrome is a major complication of monochorionic twin pregnancies. In foetuses from monochorionic twinning the presence of increased nuchal translucency thickness (NT) has been associated with an increased risk of developing this syndrome. One of the presumed mechanisms of increased NT is early cardiac failure, indirectly indicated by abnormal blood flow ...

PubMed

53
Spectral Doppler waveforms in systemic arteries and physiological significance of a patent ductus arteriosus.
2010-07-22

Patent ductus arteriosus in extremely premature babies is associated with major neonatal morbidities, such as necrotizing enterocolitis and intraventricular hemorrhage. This may be attributable, at least in part, to systemic hypoperfusion secondary to ductal steal. A hemodynamically significant ductus arteriosus (HSDA) is known to be associated with ...

PubMed

54
When is a cerclage indicated for cervical insufficiency? A literature review.
2006-09-01

Cervical insufficiency is a very difficult diagnosis to confirm. An evidenced based assessment of the randomized clinical trials, meta-analysis, cohort studies and, the American College of Obstetrics and Gynecologist (ACOG) practice bulletin demonstrated there is no difference between women treated with cerclage, and those who received bed rest in patients with an appropriate history for cervical ...

PubMed

55
Mullerian duct anomaly in a Nigerian woman with recurrent pregnancy loss.

A case of late first trimester/early second trimester recurrent pregnancy loss in a 30-year-old para 3+0 Nigerian woman is reported. She was referred to the Radiologist for Hysterosalpingography (HSG) work-up following repeated spontaneous abortions at early pregnancy stage. There was no history of trauma, surgery, alcohol/drug abuse or haematological ...

PubMed

56
Perinatal lung function and invasive antenatal procedures
1997-02-01

BACKGROUND: Second trimester amniocentesis has been associated with an excess of perinatal lung function abnormalities. Early amniocentesis might have a similar adverse effect, as could other invasive investigations carried out in the first trimester. METHODS: Plethysmographic measurements of thoracic gas volume (TGV) and airway ...

PubMed Central

57
Lipid and lipoprotein profile in physiological pregnancy.
2007-01-01

Physiologic pregnancy is associated with a broad series of metabolic adaptations which may also influence the metabolism of lipids and lipoproteins. Although the modification of serum lipids and lipoproteins has been exhaustively investigated during and after pregnancy, the relative changes recorded vary widely among the different studies. A comprehensive lipid and lipoprotein profile was ...

PubMed

58
Gut blood flow velocities in the newborn: effects of patent ductus arteriosus and parenteral indomethacin.
1990-10-01

The effects on gut blood flow velocities of parenteral indomethacin (0.2 mg/kg) given either quickly as a bolus or slowly as an infusion were compared in consecutive studies of two groups of infants with symptomatic patent ductus arteriosus. In the presence of patent ductus arteriosus the range of velocities in the superior mesenteric artery before ...

PubMed Central

59
Stages of Pregnancy

... your baby in these three stages. First trimester (week 1-week 12) First trimester See how your baby is ... is each pregnancy. Return to top Second trimester (week 13-week 28) Second trimester See how your ...

MedlinePLUS

60
Long Dwell-Time Exposure of Human Chorionic Villi to Transvaginal Ultrasound in the First Trimester of Pregnancy ...

... Time Exposure of Human Chorionic Villi to Transvaginal Ultrasound in the First Trimester of Pregnancy Induces Activation ... jiayinzh@hotmail.com Abstract Bioeffects after exposure to ultrasound are corr...

NBII National Biological Information Infrastructure

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61
First Trimester Breastfeeding Education: Can Early Education Improve Duration in the Military Community.
2004-01-01

The intent of this proposed course is to increase opportunities for learning the advantages of breastfeeding initiation and duration for the military family. This is to be accomplished by breastfeeding education during the first trimester of pregnancy or ...

National Technical Information Service (NTIS)

62
Cervical ectopic pregnancy: hysterectomy specimen examination clarifies the cause of first trimester pregnancy bleeding.
2011-03-01

A report on a difficult case of first trimester pregnancy bleeding in a 39-year-old woman solved by hysterectomy. The diagnosis was clarified by pathological examination that showed a cervical ectopic pregnancy with perforation. PMID:21338772

PubMed

63
Risk and Benefit of Drug Use During Pregnancy
2005-07-01

Environmental teratogenic factors (e.g. alcohol) are preventable. We focus our analysis on human teratogenic drugs which are not used frequently during pregnancy. The previous human teratogenic studies had serious methodological problems, e.g. the first trimester concept is outdated because environmental teratogens cannot induce congenital ...

PubMed Central

64
Maternal Antiretroviral Use during Pregnancy and Infant Congenital Anomalies: The NISDI Perinatal Study
2010-02-01

BackgroundWe evaluated the association between maternal antiretrovirals (ARVs) during pregnancy and infant congenital anomalies (CAs), utilizing data from the NISDI Perinatal Study.MethodsThe study population consisted of first singleton pregnancies on study, ? 20 weeks gestation, among women enrolled in NISDI from Argentina and Brazil who delivered between September 2002 and October 2007. CAs ...

PubMed Central

65
Draft Guidance on Clotrimazole

... Retention samples should not be returned to the sponsor at any time. ... [NOTE: Pregnant women can be included in the study after completing the first trimester of ...

Center for Biologics Evaluation and Research (CBER)

66
An Acylatable Residue of Hedgehog Is Differentially Required in Drosophila and Mouse

to amniocentesis or to chorionic-villus sampling, another method for detecting birth defects in the first trimester

E-print Network

67
(Dental) Anesthesia during Pregnancy

... drowsy and less anxious. Pregnant women should avoid nitrous oxide, particularly during the first trimester. There are many ...

MedlinePLUS

68
Management of First Trimester Pregnancy Loss Can Be Safely Moved Into the Office
2011-01-01

Management of first trimester pregnancy loss has conventionally involved two options: expectant management or dilation and curettage in the operating room. New options in the outpatient setting are providing women with alternatives that can be less expensive and performed in more private settings. This review discusses the available approaches to ...

PubMed Central

69
First-trimester septated cystic hygroma and cavum velum interpositum cyst.
2011-05-02

First-trimester septated cystic hygroma, frequently noted during general obstetric first-trimester screening, is strongly associated with fetal aneuploidy and structural anomalies and is considered an ominous finding. We present the case of a fetus with a first-trimester septated cystic hygroma and cavum velum interpositum cyst. PMID:21538378

PubMed

70
COMPARISON OF GESTATIONAL AGE AT BIRTH BASED ON LAST MENSTRUAL PERIOD AND ULTRASOUND DURING THE FIRST TRIMESTER

Reported last menstrual period (LMP) is commonly used to estimate gestational age (GA) but may be unreliable. Ultrasound in the first trimester is generally considered a highly accurate method of pregnancy dating. The authors compared first trimester report of LMP and first trime...

EPA Science Inventory

71
Fetal nuchal translucency scan and early prenatal diagnosis of chromosomal abnormalities by rapid aneuploidy screening: observational study
2006-02-25

Objective To investigate an approach for the analysis of samples obtained in screening for trisomy 21 that retains the advantages of quantitative fluorescent polymerase chain reaction (qf-PCR) over full karyotyping and maximises the detection of clinically significant abnormalities.Design Observational study.Setting Tertiary referral centre.Subjects 17 446 pregnancies, from ...

PubMed Central

72
Is first-trimester crown-rump length associated with birthweight?
2011-05-18

Please cite this paper as: Salomon L, Hourrier S, Fanchin R, Ville Y, Rozenberg P. Is first-trimester crown-rump length associated with birthweight? BJOG 2011; DOI: 10.1111/j.1471-0528.2011.03009.x. Objective? To evaluate the relationship between first-trimester crown-rump length (CRL) and birthweight (BW) Z scores. Design? Retrospective cohort study. Setting? Two tertiary ...

PubMed

73
Thyroid function in pregnancy.
2010-12-23

Advances in understanding the physiology of thyroid function in normal pregnancy have highlighted the importance of the consequences of abnormal function on obstetric outcome and foetal well-being. Pubmed search was done using the terms thyroid and pregnancy. Areas of agreement are the following: gestational normative reference ranges for thyroid function tests are required ...

PubMed

74
Non-mosaic trisomy 20 of paternal origin in chorionic villus and amniotic fluid also detected in fetal blood and other tissues.
2010-03-27

Trisomy 20 mosaicism is a common abnormality found in prenatal diagnosis. Its clinical significance remains unclear since approximately 90-93% of cases result in normal phenotype. Only 5 cases of non-mosaic trisomy 20 in amniotic fluid culture surviving beyond the first trimester have been reported. Moreover, trisomic cells are ...

PubMed

75
An evaluation of 75 terminations of pregnancy based on abnormal laboratory findings at first trimester CVS.
1990-09-01

Seventy-five selective terminations, based on abnormal laboratory findings at first-trimester CVS, were performed in 1581 consecutive pregnancies. In all cases a (semi-) direct method of cytogenetic analysis was used. The 75 abortions were analysed in number of ways. Confirmatory studies showed that three cases had to be considered as false-positive findings, and in one other ...

PubMed

76
Amniocentesis and chorionic villus sampling.
1993-04-01

Amniocentesis performed at 16 to 18 weeks' gestation has been the gold standard approach for prenatal cytogenetic diagnosis. Over the past few years, large collaborative studies on chorionic villus sampling have confirmed the safety and efficacy of chorionic villus sampling as a viable alternative for women seeking prenatal diagnosis. While the expanding experience with chorionic villus sampling ...

PubMed

77
Methotrexate and misoprostol teratogenicity: further expansion of the clinical manifestations.
2011-06-10

We describe a boy who was exposed to misoprostol and methotrexate in the first trimester of gestation as a result of a failed medical abortion. He presented with severe growth retardation, skull defects, proptotic eyes, cleft palate, and severe micrognathia. There were bilateral defects of the upper and lower extremities, missing and hypoplastic ribs, and ...

PubMed

78
Gestational sac fluid volume measurements in virtual reality.
2011-04-26

OBJECTIVE: The aim of this prospective cohort study is to evaluate a virtual reality (VR) application for gestational sac fluid volume (GSFV) measurements in first trimester pregnancies and to study the correlation between different embryonic growth parameters. METHODS: We analyzed 180 3D ultrasound scans of 42 healthy women, performed between 5(+5) and ...

PubMed

79
Appearance of the fetal posterior fossa at 11+3 to 13+6 gestational weeks in transabdominal ultrasound examination.
2011-01-31

OBJECTIVES: To describe the sonographic appearance of the structures of the posterior cranial fossa in fetuses at 11 + 3 to 13 + 6 weeks of pregnancy and determine whether abnormal findings of the brain and spine can be detected by sonography at this time of pregnancy. METHODS: This is a prospective study including 692 fetuses whose mothers attended Innsbruck Medical ...

PubMed

80
Symptomatic sinus arrest in a young girl.
1977-04-01

Sinus node dysfunction, previously unreported in girls, occurred in a 13-year-old girl who required permanent pacemaker implantation because of recurrent syncopal attacks. In addition to periodic sinus arrest, the presence of significant atrioventricular conduction disturbance was also documented. Although she had had a persistent ductus arteriosus divided at an earlier age, ...

PubMed Central

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81
Cytogenetic study of spontaneous abortions using semi-direct analysis of chorionic villi samples detects the broadest spectrum of chromosome abnormalities.
2008-01-01

Conventional tissue culturing and karyotyping of spontaneous abortions has limitations such as culture failure, external contamination and selective growth of maternal cells. Molecular cytogenetic techniques such as FISH, QF-PCR, and CGH allow diagnosis on uncultured cells but are also limited as to the spectrum of cytogenetic abnormalities detected. We describe the ...

PubMed

82
Management of urethral sphincter mechanism incompetence in a male dog with laparoscopic-guided deferentopexy.
2002-11-01

Urethral sphincter mechanism incompetence is uncommon in the male dog. Diagnosis is made on the basis of the history (full bladder intermittent incontinence with persistence of normal micturitions), clinical examination and by exclusion of other causes of incontinence, such as prostatic disease, lower urinary tract abnormalities and cystitis. This report describes a case in an ...

PubMed

83
Cardiac malformations are increased in infants of mothers with epilepsy.
2008-01-08

We aimed to ascertain the prevalence of cardiac malformation (CM) and its association with antenatal exposure to an antiepileptic drug (AED) in infants of mothers with epilepsy (IMEs). Women with epilepsy (WWE) are enrolled in Kerala Registry of Epilepsy and Pregnancy (KREP) in the prepregnancy or early pregnancy period and are followed up with a standard protocol until the IMEs are 6 years old. ...

PubMed

84
[Chromosomal mosaicism in spontaneous abortions: analysis of 650 cases].
2010-10-01

It is known that up to 50% spontaneous abortions (SA) in the first trimester of pregnancy are associated with chromosomal abnormalities. We studied mosaic forms of chromosomal abnormalities in 650 SA specimens using interphase mFISH and DNAprobes for chromosomes 1,9, 13/21, 14/22, 15, 16, 18, X, and Y. Numerical ...

PubMed

85
The experience with the foetal diagnosis of the cystic fibrosis in the second and first trimester.
1990-01-01

The amniotic fluid activity of gamma glutamyl transpeptidase (GGT), leucine aminopeptidase (LAP) and alcaline phosphatase (AP) and disacharidases was examined in 66 pregnancies with the risk of cystic fibrosis (CF) in the 17th-21st weeks of gestation. So far 28 pregnancies continue. The prenatal diagnosis was confirmed in all so far delivered children or aborted foetuses if the GGT activity was ...

PubMed

86
Prenatal cytogenetic diagnosis in Spain: analysis and evaluation of the results obtained from amniotic fluid samples during the last decade.
2011-04-13

Chromosome abnormalities are one of the main causes of congenital defects, and establishing their frequency according to the different clinical indications for invasive procedure during pregnancy is especially important for genetic counselling. We analyzed the results of 29,883 amniotic fluid samples referred to our laboratory for cytogenetic studies from 1998 to 2009, which ...

PubMed

87
TRANSCERVICAL RETRIEVAL OF FETAL CELLS IN THE PRACTICE OF MODERN MEDICINE: A REVIEW OF THE CURRENT LITERATURE AND FUTURE DIRECTION
2010-01-13

ObjectiveTo review published methods for transcervical collection of fetal cells and to assess the potential of this approach for application in prenatal diagnosis.DesignRetrospective analysis of efforts at prenatal diagnosis using trophoblast cells shed into the lower uterine pole that accumulate within the cervical mucus at the level of the internal os.ResultsMinimally invasive techniques that ...

PubMed Central

88
Rubella Virus Replication and Links to Teratogenicity
2000-10-01

Rubella virus (RV) is the causative agent of the disease known more popularly as German measles. Rubella is predominantly a childhood disease and is endemic throughout the world. Natural infections of rubella occur only in humans and are generally mild. Complications of rubella infection, most commonly polyarthralgia in adult women, do exist; occasionally more serious sequelae occur. However, the ...

PubMed Central

89
Prenatal diagnosis of ?-thalassemia and other hemoglobinopathies in southwestern Turkey.
2011-01-01

Our aim was to evaluate the prenatal diagnosis of ?-thalassemia (?-thal) and other hemoglobinopathies in a region with high frequency. After detection by premarital or antenatal screening, 312 patients underwent 420 prenatal diagnostic procedures for 407 fetuses in a 10-year period. Fetal samples were collected by chorionic villi sampling (CVS) in the first ...

PubMed

90
Newer antidepressants in pregnancy: prospective outcome of a case series.
2004-12-01

Antidepressant drug choice in pregnancy is a complex problem especially for new drugs. Among 590 cases exposed to drugs during pregnancy who were followed by our center, 21 cases used newer antidepressants, i.e., venlafaxine, mirtazapine, nefazodone. We present the gestational findings and fetal outcomes of these cases. Ten cases had used venlafaxine, one case had used both venlafaxine and ...

PubMed

91
Mantel--Haenszel analysis of Oxford data. II. Independent effects of fetal irradiation subfactors. [X radiation
1976-11-01

A Mantel-Haenszel analysis of fetal irradiation subfactors indicated that most of the extra x-rayed cases in the Oxford Survey of Childhood Cancers were radiation induced. First trimester exposures were rare but probably ten times more dangerous than later exposures. Ratios of observed: expected numbers of cancer deaths were lower for children with ...

Energy Citations Database

92
Fetal alcohol syndrome: new perspectives for an ancient and underestimated problem.
2011-10-01

The knowledge of the dangers of alcohol consumption during pregnancy isn't indeed a new issue, but the recent evidences of ethyl-glucuronide and ethyl-sulfate in meconium as novel biomarkers of prenatal ethanol exposure open new perspectives for the early diagnosis of the alcohol-related birth defects. This is crucial for a better developmental outcome of the affected patients and for preventing ...

PubMed

93
Current awareness
2000-07-01

In order to keep subscribers up-to-date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of prenatal diagnosis. Each bibliography is divided into 17 sections: 1 Books, Reviews & Symposia; 2 General Interest; 3 Normal Fetal Development; 4 ...

PubMed

94
Altered levels of insulin-like growth factor binding protein proteases in preeclampsia and intrauterine growth restriction.
2010-09-01

Intrauterine growth restriction (IUGR) and preeclampsia (PE) are leading causes of perinatal and maternal morbidity and mortality. Many studies have found association between low levels of insulin-like growth factor binding protein (IGFBP) proteases in the first trimester maternal circulation and the risk of subsequent development of PE and/or IUGR. These ...

PubMed

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