A case is presented in which a benign cystic tumor disrupted the continuity of the A-V conducting pathway, resulting in complete heart block. Despite 15 years of stable chronic A-V block, the patient developed ventricular arrhythmias that led to her death...

We report 3 tracings from an electrophysiological study in which the appearance of a pseudo 1st degree A-V block helped to unmask the presence of a retrograde conduction, previously unrecognized. Our case highlights the importance in specific cases to have more than 2 intracardiac tracings during an electrophysiological study. PMID:21894814

The incidence of post-surgical complete A-V block has come down from 16% in the 50's to less than 1% with improvement in technique. Of these, 14% are transient and attributable to post-operative oedema and haemorrhage at the site of block. Permanent damage manifests early, or as late as 15 years, and in these, the risk of sudden death ...

or semiconducting depending on the wrapping angle,2 CNTs can be utilized in nanoelectronics. Excellent mechanical nanotubes (CNTs) have been envisaged to be the building blocks of a variety of nanoscale devices characteristics2,3 of CNTs suggest their use as structural re- inforcements. There are many other promising

The therapeutic management of the complications of percutaneous nephrolithotomy (PNL) depends on the early recognition of these complications. A review of 720 cases revealed the incidence of significant complications to be less than 4%. An algorithm was developed as a guideline for the diagnosis and management of ...

... daily by anesthesia providers to perform spinal, epidural, and peripheral ... of these anesthetics would reduce the chances of these complications. ...

Cardiac complications of iron overload are the most common cause of death in patients with thalassemia major. These complications include recurrent pericarditis, refractory congestive heart failure and rhythm disorders. The usual rhythm disturbances are supraventricular or ventricular premature contractions and first-or second-degree heart ...

We report two cases of lithium-associated Mobitz II block. Both patients required placement of a permanent pacemaker due to persistent block and symptoms despite attempts at lowering the daily dose of lithium. We then reviewed the literature on this rare complication. Chronic lithium therapy may be associated with development of ...

Ascaris lumbricoides, a large round nematode, which causes human ascariasis, is the most prevalent helminth in the world. Ascariasis is usually asymptomatic but can cause serious complications, with a mortality rate of 5%. We report a 55-year-old woman from Comoros who presented with ascariasis complicated by occult cholangitis, severe acute pancreatitis, ...

We present results of coarse-grained computer modelling of block copolymer systems in cylindrical and spherical nanopores on Cell Dynamics Simulation. We study both cylindrical and spherical pores and systematically investigate structures formed by lamellar, cylinders and spherical block copolymer systems for various pore radii and affinity of ...

We reported a case of angina pectoris with cardiac arrest immediately after treadmill exercise test, and the effect of PTCA in the same case. A 69-year-old Japanese male had chest oppression on exertion. Initial treadmill test showed 2 mm ST-segment depression in leads V4-6. Two minutes after exercise, he had atrio-ventricular (A-V) block and cardiac ...

10,978 administrations of epidural block were performed during 1962-1977 and the major complications and related factors are evaluated and analyzed. Toxic reactions (0.56%) occurred more frequently in portal hypertension cases undergoing shunt operations ...

We present a case report of severe localized infection after continuous popliteal sciatic nerve block. The report highlights the importance of meticulous asepsis and possibly limiting the duration of catheter use. PMID:15923265

The management of patients with hypertrophic cardiomyopathy (HCM) has evolved markedly over the past 20 years, particularly with the rising number of indications for implantable cardiac defibrillators (ICDs) and alcohol septal ablation (ASA). However, medical therapies targeted to improve quality of life are underused; when resting and/or exercise obstruction is present, an incremental and ...

Transient first-degree heart block developed following surgery to divide a vascular ring. This unusual complication was related to autonomic impairment secondary to a local nerve block. The role of the autonomic innervation of the atrioventricular node and the potential role of the local anesthetic are reviewed. PMID:11123133

Cervical epidural blocks were used as part of a comprehensive multimodal treatment programme for patients with chronic benign pain in the head and neck. Forty-five patients had 141 blocks without major complications. The indications and role of blocks in pain management are discussed. PMID:6704782

A 63 year old man with complete atrioventricular block was diagnosed as having Fabry's disease. A short PR interval is a common electrocardiographic finding in Fabry's disease, but complete atrioventricular block is a very rare complication. Necropsy indicated that lipid accumulation in the atrioventricular conduction system was the ...

A patient exposed to agent orange and a gunshot wound during the Vietnam War has developed multiple medical problems including nocardiosis, onychomycosis (Trichophyton rubrum), multiple thromboembolic episodes, hemochromatosis, diabetes mellitus type 2, diabetic neuropathy, activated protein C resistance (without Leyden V 1st mutation), degree A-V block, ...

The Block 1C version of the surface launched HARPOON cruise missile has performance capabilities that cannot be used due to the limitations imposed by the HARPOON Shipboard Command-Launch Control Set (HSCLSC). This thesis is an initial effort to redesign ...

Since the revolution of ultrasound in regional anesthesia, new techniques have arisen. The "transversus abdominis plane" block or TAP block is one of them. The benefits of a TAP block for postoperative analgesia have been shown mostly after laparotomy. Because this block seems to be technically easy, many ...

Ninety-four patients with peripheral arterial injuries were subjected to acute repair, negative exploration, or late repair of the complications of the arterial injury (false aneurysm, A-V fistula, and/or limb ischemia). The causes of failure after acute injury include extensive local soft tissue and bony damage, severe concomitant head, chest or abdominal ...

A lateral approach described by Volker Hempel and Dr. Dilip Kotharihas been further studied, evaluated and described in detail in the present study. The aim of this study was to evaluate lateral approach of supraclavicular brachial plexus block, mainly in terms of successes rate and complication rate. The study was conducted in secondary level hospital and ...

A lateral approach described by Volker Hempel and Dr. Dilip Kotharihas been further studied, evaluated and described in detail in the present study. The aim of this study was to evaluate lateral approach of supraclavicular brachial plexus block, mainly in terms of successes rate and complication rate. The study was conducted in secondary level hospital and ...

The purpose of this study was to investigate the efficacy of femoral nerve blocks in patients with fractures of the neck of the femur. Thirty-six patients with femoral neck fractures attending the accident department over a three month period received femoral blocks from one of the two authors. The effect of the block was assessed both ...

A 72-yr-old patient was to undergo a left lumbar plexus block by the posterior approach to achieve postoperative analgesia after hip replacement. The block failed after three unsuccessful attempts to identify nerve structures and a fascia iliaca compartment block was performed. Postoperatively the patient received enoxaparin and then ...

We report 2�cases of children who developed a complete atrioventricular block following an infection, varicella without complication initially in the first case and Mycoplasma pneumoniae pneumopathy in the second case, in which a first-degree congenital heart block was diagnosed on this occasion. In case�1, the treatment consisted ...

Upper abdominal surgery leads to severe postoperative pain. Insufficient postoperative analgesia accompanies a high incidence of complications. Therefore, postoperative analgesia is very important. The epidural analgesia has many advantages. However it has a high risk of epidural hematoma in anticoagulated patients. Rectus sheath block provided safer and ...

We report a case of a woman with a left bundle branch block and secundum atrial septal defect (ASD) who underwent transcatheter occlusion using Amplatzer device. The patient was treated with antiarrhythmic drugs because of paroxysmal atrial flutter. One and a half month later the patient developed a second degree atrioventricular block. Temporary pacing ...

, complicating the manufacturing process. In this paper, we report on silicon micromechanical resonatorsHIGH FREQUENCY MICROMECHANICAL PIEZO-ON-SILICON BLOCK RESONATORS Shweta Humad, Reza Abdolvand and characterization of high-frequency single crystal silicon (SCS) block resonators with piezoelectric

A 48-year-old man with symptoms of presyncope and congestive cardiac failure had hypertrophic cardiomyopathy (HCM) without obstruction. Complete heart block (CHB), a rare complication of this disease, was preceded by complete left bundle-branch block. Right ventricular (RV) heart failure was a dominant clinical feature but improved ...

In five cases of anteroseptal myocardial infarction complicated by intermittent right bundle-branch block, the onset of right bundle-branch block provoked the appearance of abnormal Q waves in leads V1 and V2, whereas a small initial R wave was present in the same leads during normal conduction. The intermittency of the conduction ...

Severe complications such as spinal epidural haematoma and an array of adverse neurological events leading to temporary or permanent disability have been ascribed to central neuraxial blocks. Infections (meningitis, abscesses), chemical injuries and very rarely cerebral ischaemia or haemorrhage, or both, have also been ascribed directly or indirectly to ...

The magnetic microstructure of a natural, finely exsolved intergrowth of submicron magnetite blocks in an ulv�spinel matrix is characterized by using off-axis electron holography in the transmission electron microscope. Single-domain and vortex states in individual blocks, as well as magnetostatic interaction fields between them, are imaged at a spatial ...

This article presents the incidence of heel pressure ulcers after an elective hip or a knee replacement. The majority of patients in the authors' institute receive either a neuraxial block (epidural and/or spinal) or peripheral nerve blocks (femoral and sciatic), depending on the anaesthetist's and surgeon's preference, and the patient's physical status. ...

Cationic--hydrophilic block copolymers have been developed as a potential carrier for use in gene delivery, displaying good transfection efficiency and biocompatibility. The cationic blocks effectively condense the DNA into a core surrounded by a protective and stabilizing corona formed by the hydrophilic blocks [Jiang et al., J. ...

Non-obstetric In-hospital Surgical Procedure; Elective or Emergent, Under General Anaesthesia; Alone or in Combination With Regional/Neuraxial Anaesthesia), Neuraxial Anaesthesia or Plexus Block (With and Without Sedation)

Contents include: Mediastinal needle biopsy; A case of compound fracture of the fifth cervical vertebra after a boxing injury with late cord complications; Radiologic evaluation of the effect of treatment of atrioventricular block by electrical stimulatio...

We report on the management of a rare complication of a vascular sheath being placed inadvertently in the aorta rather than in the venous system following thrombolytic therapy administration in a patient presenting with an acute myocardial infarction and complete heart block.

Effects of logarithmic compression at radio frequencies on various waveforms are examined analytically. It is shown that solutions for even the most simple inputs can be very complicated. An equivalent block diagram for the radio-frequency logarithmic amp...

Heart attack Basics In-Depth Multimedia Expert Answers Resources Definition Symptoms Causes Risk factors Complications Preparing for your ... Get Started Definition By Mayo Clinic staff A heart attack usually occurs when a blood clot blocks the ...

... condition characterized by elevated blood levels of the amino acid histidine, a building block of most proteins. ... What glossary definitions help with understanding histidinemia? acids ; amino acid ; ammonia ; autosomal ; autosomal recessive ; cell ; complication ; cornea ; ...

complicated GVAR format into full-resolution images and sounding files in .... On the SUN, the GVAR data blocks are written into a UNIX disk file, named with a ...

Operating water intakes in lakes and rivers in northern regions is complicated by the presence of ice. One of the most difficult problems is the accumulation of frazil ice on the intake trash rack, which can completely block the trash rack and rapidly and...

The federal grant-in-aid system now consists of three general types of grants: categorical grants; block grants; and general revenue sharing. These are discussed and compared. The types of complications that may arise from implementation of these grants p...

Total hip replacement produces significant postoperative pain. Psoas compartment block is the most effective block of the lumbar plexus in terms of pain relief and reduced blood loss. It is a proven regional technique for analgesia and anaesthesia during and after total hip replacement conferring a number of benefits to the patient. However, traditional ...

Extracolonic manifestations of inflammatory bowel disease are common and diverse. Cardiac complications, however, are rare and of these pericarditis is the most frequently described association. A 57 year old man with a 20 year history of ulcerative colitis presented with a four day history of retrosternal chest pain and exertional dyspnoea. Electrocardiogram showed Wenckebach ...

Postherpetic neuralgia is the most frequent complication of herpes zoster. Treatment of this neuropathic pain syndrome is difficult and often disappointing. Although postherpetic neuralgia is generally a self-limited condition, it can last indefinitely. Continuous epidural blockade for patients with acute zoster can shorten the duration of treatment. However, continuous ...

Postherpetic neuralgia is the most frequent complication of herpes zoster. Treatment of this neuropathic pain syndrome is difficult and often disappointing. Although postherpetic neuralgia is generally a self-limited condition, it can last indefinitely. Continuous epidural blockade for patients with acute zoster can shorten the duration of treatment. However, continuous ...

The case of a patient who suffered a seizure following a nerve stimulator-guided coracoid infraclavicular brachial plexus block, is reported. Following the seizure, an ultrasound machine was used to image the patient's infraclavicular region, which showed an anatomical variation in the position of the axillary vein relative to the axillary artery. The use of ultrasound in ...

We present the case of a 21-year-old man with advanced refractory Parkinson's disease treated with Duodopa continuous infusion. With this therapy, the patient had a spectacular recovery but after six months, he experienced an aggravation of his symptoms. A failure of his pumping system was suspected but we discovered that the jejunal tube was blocked due to a knot around a ...

We present the case of a 21�year�old man with advanced refractory Parkinson's disease treated with Duodopa continuous infusion. With this therapy, the patient had a spectacular recovery but after six months, he experienced an aggravation of his symptoms. A failure of his pumping system was suspected but we discovered that the jejunal tube was blocked due to a knot around a ...

Horner's syndrome is a rare complication of epidural analgesia in labour. Although it is a sign of high sympathetic block, patients are usually haemodynamicaly stable. We report a case of undiagnosed Horner's syndrome complicating epidural analgesia in labour, where a standard dose of local anaesthetic was given for an emergency ...

Atrial and ventricular chronotropic effects of the individual stereoisomers of propranolol, pindolol, metoprolol and penbutolol were studied in conscious dogs with chronic atrio-ventricular (A-V) block. Ventricular beta-adrenoceptor blocking activity was assessed for all drugs against isoprenaline under the same experimental ...

The brachial plexus in infraclavicular region can be blocked by various approaches. Aim of this study was to compare two approaches (coracoid and clavicular) regarding success rate, discomfort during performance of block, tourniquet tolerance and complications. The study was randomised, prospective and observer blinded. Sixty adult ...

�(transform) Fault (TTF) type, with the Australian and the Philippine plate subducted underneath the Eurasian plate is more complicated than the intersection of three sim� plified plate boundaries described above may imply, Indonesia Abstract. The point of convergence of the Eurasian, Philippine, and Australian Plates, is situated

Sudden death in pulmonary atresia and intact ventricular septum with right ventricular dependent coronary circulation is a well-established complication, and is thought to be caused by myocardial ischaemia. We report a case of paroxysmal complete atrioventricular block that raises the possibility of an additional mechanism of sudden death.

Abdominal pain associated with chronic pancreatitis is often difficult to control with analgesics and can be severely debilitating with significant impairment of quality of life. In these patients, neurolytic celiac plexus block (NCPB) is an effective treatment option with a low complication rate. However, there is a risk of ejaculatory failure after NCPB, ...

Carbon nanotubes are attractive materials as a building block of quantum dot devices because of their small diameter. However, to fabricate integrated quantum dot devices, device fabrication processes suitable for nanotubes have to be developed. In this paper, we present our approach to fabricate a single quantum dot, coupled quantum dots and single electron inverter with two ...

A 38 year old woman presented with severe weakness, high fever, and sore throat. Physical examination showed follicular tonsillitis and bradycardia caused by a atrioventricular block. Within 24 hours a normal sinus rhythm was regained but slight transient ST-T changes compatible with myocarditis were evident. Throat culture grew Streptococcus haemolyticus group A.ImagesFig ...

A young patient with aortic and mitral valve infective endocarditis and advanced destruction of the surrounding tissues underwent a complex reconstructive surgery, including double valve replacement, reconstruction of aortic-mitral continuity and ascending aorta. Intraoperative transesophageal echocardiography revealed a blocked mitral leaflet, which was released by valve ...

Modification of atrioventricular node is a usual and necessary operation to cure atrioventricular nodal reentrant tachycardia (AVNRT). In this operation, atrioventricular block is the most severe complication and its prevention is of our great concern. This complication always occurs under some special circumstances with potential ...

Pain of the leg ulcer significantly decreases patients' QOL, and pain control is an important treatment as the ulcer treatment. Continuous epidural block is often selected, but we can not provide enough continuous epidural block because of oral anticoagulant treatment and infection because of long-term indwelling catheter. We did continuous popliteal ...

The Leksell gamma unit at the University of Pittsburgh uses 201 highly focused 60Co beams arranged in a hemispherical array. Selective beam blocking can be used to modify the treatment volume into ellipsoid shapes oriented in different directions to match better the shape of the target volume. Dose distributions for different blocking patterns were ...

First-degree heart block is a common electrocardiographic manifestation of acute rheumatic fever and is included in Jones' diagnostic criteria. Other electrocardiographic changes such as sinus tachycardia, bundle branch blocks. nonspecific ST-T wave changes, atrial and ventricular premature complexes have been reported with variable frequency. However, ...

Aphakic pupillary block glaucoma and malignant glaucoma (ciliovitreal block) are severe complications of the intracapsular cataract extraction, presenting clinically as elevated intraocular pressure, persistent shallow anterior chamber and severe vitreal hernia. Six eyes (four women and two men) with aphakic pupillary ...

Femoral nerve block (FNB) is an accepted mode of analgesia for lower limb procedures but has a documented complication rate. This study compared femoral nerve and fascia iliaca regional anesthesia for total knee arthroplasty (TKA), using fentanyl consumption as the primary outcome measure. Ninety-eight primary unilateral TKA patients were blinded and ...

This is a unique case of Merkel cell carcinoma, a rare neuroendocrine tumor, metastasizing to the heart and inducing a progression of cardiac complications such as new-onset atrial fibrillation, malignant pericardial effusion with tamponade physiology, first-degree heart block, and complete heart block. Metastases to the heart are ...

Supraclavicular brachial plexus blocks are not common in pediatric patients due to the risk of pneumothorax. Ultrasonography is an important tool for identifying nerves during regional anesthesia. Directly visualizing the target nerves and monitoring the distribution of the local anesthetic are potentially significant. In addition, ultrasound monitoring helps avoid ...

Non-obstetrical surgery during the first trimester is stressful to both the mother and the fetus. Anesthesiologists are also stressed, not only because of the effects of surgery itself, but also because of the uncertain influences of anesthesia thrown upon on the fetus. The authors present a case of breast surgery successfully performed on a woman 8 weeks pregnant requiring removal of breast ...

The structure type of analcime (ANA) is interpreted based on the basic block: a six-membered ring of tetrahedra which is generated by two template cations. The uncertainties in the composition and/or structure of alumophosphate, ferrisilicate, and titanosilicate pollucites, which are complicated by adding H2O molecules and (OH)? or O2? anions, are ...

(Headache 2010;50:869-881) Epidural blood patch is an effective treatment with a low complication rate. It is also an invasive method that can cause permanent neurological sequelae such as early and late back pain, radiculopathy, spinal-subdural hematoma, spinal-epiarachnoid hematoma, intrathecal hematoma, arachnoiditis, and infection. We report a case in which a postdural ...

A 40-year-old man was emergently hospitalized because of high fever, a transient ischemic attack, and complete atrioventricular block. The diagnosis was endocarditis, cyst of the interventricular septum (IVS), and complete atrioventricular block. A temporary pacemaker was introduced, and the patient underwent surgery that included IVS cystectomy, ...

We treated two patients in whom silicone oil pupillary block developed despite a patent inferior iridectomy. The clinical characteristics of this complication were a deep anterior chamber, specular reflexes from the iris surface, identification by biomicroscopy of aqueous trapped inferiorly in the vitreous cavity, and no convection currents in the anterior ...