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Medrano Gustavo A - - 2008
Septal necrosis + peripheral left blocks. Because of an extensive septal necrosis, the manifestation of the initial ventricular activation forces decreases in the precordial leads. With left bifascicular block (LASB + LPSB), the first ventricular activation forces become more evident and the electrical signs of septal necrosis can be concealed. ...
Evans Cliff - - 2008
There has been extensive coverage of acute myocardial infarction (AMI) and the acute coronary syndromes (ACS) in recent years, yet heart blocks involving the right and left bundle branches have received little coverage, despite their frequent co-existence. This article will commence with an overview of the ACS with which LBBB ...
Castellanos Agustin - - 2008
The electrocardiograms of a 69-year-old woman with severe heart failure showed a left-sided nonspecific intraventricular conduction delay (QRS duration, 0.13 seconds) characterized by notches and slurrings in the descending part of the R waves in the left precordial leads and in the ascending parts of the S waves in the ...
Rembert Melanie S - - 2008
A clinically normal 2-year-old Hispaniolan Amazon parrot (Amazona ventralis) was found to have periodic second-degree atrioventricular (AV) block with variable nodal conductions while anesthetized with isoflurane during a thermal-support research project. Arrhythmias were observed on 5 successive weekly electrocardiograms. A complete cardiac evaluation, including a diagnostic electrocardiogram, revealed intermittent bradyarrhythmias ...
Serinken Mustafa - - 2009
INTRODUCTION: Serious cardiac toxicity due to lithium toxicity is uncommon and generally only occurs in individuals with underlying heart disease. Cardiac impairment may result in dysrhythmias, including sinus bradycardia, sinoatrial block, and first-degree atrioventricular block. This paper describes a patient with complete AV block in the course of chronic lithium ...
Bhimaraj Arvind - - 2008
Alternating bundle branch block (ABBB) is a less commonly encountered phenomenon with the advent of re-perfusion therapy for acute myocardial infarction. ECGs simulating the appearance of an ABBB need to be carefully analysed. We present an ECG showing a baseline Left Bundle Branch Block(LBBB) progressing to a high grade AV ...
Miller Wayne L - - 2008
Ventricular conduction blocks (VCBs) identified on a 12-lead electrocardiogram (ECG) are associated with poor outcomes in patients with known cardiac disease. The prognostic implications of uncomplicated VCB (right or left bundle branch block [RBBB or LBBB], left anterior hemiblock) in patients without cardiac diagnoses, however, need to be reevaluated in ...
Ramamurthy S - - 2007
Current guidelines recommend implantation of permanent pacemakers for advanced atrioventricular block complicating acute myocardial infarction (MI) when the block is present beyond the usual hospital course. In patients with inferior MI, such blocks are usually transient, but they can also be persistent. However, they are not considered as primary indications ...
Ovaert Caroline - - 2008
Complete atrio-ventricular heart block is a well-reported complication after percutaneous closure of perimembranous ventricular septal defects. The incidence seems to be higher than after surgical closure. Early heart block can be transient and pacemaker implantation is not always required. Late heart block is also described. We describe two patients who ...
Nee Lisa M - - 2007
Partial or total occlusion of septal perforator branches can occur during stenting of the proximal and mid portion of the left anterior descending artery, secondary to plaque snow plowing and/or stent "jailing". Flow compromise in a sizeable septal branch can result in a myocardial infarction or in atrioventricular conduction abnormalities. ...
Patanè Salvatore - - 2008
Paroxysmal atrioventricular block is an ill-defined entity, previously described in sporadic cases in association with vasovagal reaction, coronary angiography and distal conduction disease. The occurrence of atrioventricular block in acute inferior wall myocardial infarction is related to the presence of an important right coronary artery that is occluded, the recanalisation ...
Extramiana Fabrice - - 2007
AIMS: To show 2 examples in which the analysis of the effect of bundle branch block on orthodromic reciprocating tachycardia cycle length was misleading. METHODS AND RESULTS: We performed an electrophysiological study in two patients with orthodromic reciprocating tachycardia showing a transition from wide to narrow QRS during tachycardia. Our ...
Kaya Mehmet Gungor - - 2007
A 19-year-old woman presented with abdominal pain. Aside from epigastric tenderness, the patient's physical examination was unremarkable. She developed ventricular tachycardia with left bundle branch block morphology shortly after admission. Echocardiography revealed a thin, enlarged, and hypokinetic right ventricle. Electron beam computed tomography demonstrated hypodense areas in the right ventricular ...
Liberman Leonardo - - 2008
Late onset of complete heart block is a potentially dangerous complication after open heart surgery for congenital heart disease. The characteristics of patients with late-onset heart block have not been well described. A retrospective review of a pacemaker database was done to identify patients who presented with new onset heart ...
Tuzcu V - - 2007
We describe a 16-year-old female with a history of swallowing-induced syncope. The physical examination, ECG, echocardiography, barium swallow test, and thyroid function tests were within normal limits. The ambulatory ECG revealed intermittent complete atrioventricular block only associated with swallowing. There was also intermittent first-degree atrioventricular block not related to eating. ...
Patanè Salvatore - - 2008
Left bundle branch block is usually associated with normal or left axis deviation. Rarely the ecg shows an LBBB with changing QRS morphology and changing axis deviation. We describe a case of atrial fibrillation with intermittent right axis deviation in the presence of complete left bundle branch block in an ...
Coceani Michele - - 2007
Interatrial communications (ICs) have been linked to paradoxic embolism, which may be prevented using both surgical and percutaneous interventions. The case of a 61-year-old woman with a history of transient cerebral ischemic attack who developed repetitive ventricular arrhythmias and an intermittent left branch bundle block immediately after percutaneous closure of ...
Fischbach Peter S - - 2007
Complete heart block, either congenital or acquired, in children and patients with congenital heart disease is a relatively frequent occurrence requiring therapy. The natural history of this condition has been distorted by the advent of new diagnostic and therapeutic modalities. The therapy of complete heart block is evolving with new ...
Sovari Ali A - - 2007
Myotonic dystrophy (DM) is an inherited disorder transmitted in an autosomal dominant fashion and characterized by myotonia with dystrophic involvement of muscles and other multisystemic manifestations. It is the most common muscular dystrophy in whites. DM1, the most common type of DM, is associated with conduction defects, tachyarrhythmia, cardiomyopathy, and ...
Ashikaga Keiichi - - 2007
We describe a 35-year-old man with idiopathic frequent premature ventricular contractions (PVCs) originating from the His-bundle region, where a low frequency ventricular potential was recorded in the bipolar recording and QR pattern in the unipolar recording. Electro-anatomical mapping revealed a confined low voltage zone (<1.2 mV) in the His-bundle region, ...
Kasai Takatoshi - - 2007
Cardiac metastasis from lung cancer is rarely diagnosed antemortem, as it usually causes no symptoms or signs. We report the case of a 56-year-old man with recurrent lung adenocarcinoma in whom developed a large mass in the ventricular septum, complete atrioventricular block, and obstruction of the left ventricular outflow tract.
Movahed Mohammad-Reza - - 2007
Diabetes mellitus (DM) is a major risk factor for cardiovascular disease and mortality with increasing prevalence in the ageing population. Coronary artery disease is the major cardiovascular abnormality in DM patients. Cardiomyopathy and left ventricular hypertrophy are two other known associated cardiovascular abnormalities. There are a few non-randomized studies reporting ...
Takamura Takeshi - - 2008
A 52-year-old woman with fulminant myocarditis had completed left bundle branch block (LBBB) and severely impaired left ventricular (LV) function. Marked mechanical dyssynchrony with septal-to-posterior delay of 389 ms was observed by echocardiographic speckle tracking radial strain imaging on admission, which was dramatically improved to 106 ms after total recovery ...
Liu Yuan-Hung - - 2007
Left ventricular lead positioning is always the critical step in cardiac resynchronization therapy because of the complex anatomy of coronary sinus branches. We describe the case of a 46-year-old man with dilated cardiomyopathy and complete left bundle branch block presenting with heart failure. The placing of the left ventricular lead ...
Elizari Marcelo V - - 2007
The trifascicular nature of the intraventricular conduction system and the concept of trifascicular block and hemiblock were described by Rosenbaum and his coworkers in 1968. Since then, anatomic, pathological, electrophysiological, and clinical studies have confirmed the original description and scarce advances have been developed on the subject. In the present ...
Yamada Takumi - - 2007
A 62-year-old man with Class III heart failure and left bundle branch block underwent cardiac resynchronization therapy. Because prior implantation attempts from the left side were unsuccessful, the right side approach was attempted. However, it was still impossible to advance the pre-shaped sheaths into the distal coronary sinus (CS) because ...
Bhargava Kartikeya - - 2007
An electrocardiogram (ECG) showing sinus tachycardia with sinus rate exceeding the ventricular rate suggesting atrio-ventricular (AV) block in a patient with old anterior wall infarction is presented. The presence of varying PR intervals, irregular RR intervals and P-QRS relationship not consistent with 2nd degree type 1 AV block was seen. ...
Finsterer Josef - - 2008
OBJECTIVES: To report the echocardiographic and autopsy findings of left ventricular hypertrabeculation (LVHT), also known as noncompaction, in a patient with central and peripheral nervous system disease, who died shortly after diagnosing noncompaction. CASE REPORT: In a 75 year old woman with cognitive decline, Parkinson syndrome, stroke-like-episodes, basal ganglia calcification, ...
Finsterer Josef - - 2007
OBJECTIVES: Complete heart block has not been reported in association with left ventricular hypertrabeculation (LVHT)/noncompaction, nail-patella syndrome (NPS), and mitochondrial myopathy (MMP). CASE REPORT: A 47-year-old man with congenital NPS from a 17-bp deletion in exon 5 of the LMX1B gene, MMP from the A3243G mitochondrial DNA transition, and LVHT ...
Kinoshita Shinji - - 2007
The Holter monitor electrocardiograms were taken from 2 patients with intermittent Wolff-Parkinson-White syndrome. In these patients, when the heart rate was increased, accessory-pathway block on alternate beats was found and was maintained for a considerably long period. In one patient, when accessory-pathway block on alternate beats was found, a ventricular ...
Kaneshige T - - 2007
The cardiac conduction system was examined histologically in four canine cases of endocardiosis of the mitral valve (MV) with complete atrioventricular (AV) block. In all cases, moderate to severe reduction of the conduction fibres due to fibrous or fibro-fatty replacement was observed in the penetrating and branching portions of the ...
Quantock C L - - 2007
An 82-year-old ASA 2 patient underwent routine sub-Tenon's block for cataract surgery. One minute after injection of the local anaesthetic, the patient had a generalised tonic-clonic seizure and developed refractory ventricular fibrillation; subsequent resuscitation was unsuccessful. With no evidence for intravascular injection, the lack of structural brain abnormalities, and the ...
van der Heijden Rob - - 2007
Intraventricular conduction delay in the form of left bundle branch block plays an important role in the genesis and the progression of congestive hart failure. We report on the clinical course of a patient and the improvement in functional status after the disappearance of left bundle branch block, despite withholding ...
Erdogan Okan - - 2007
The present case report describes a patient with dual chamber pacemaker whose surface ECG demonstrated paced right bundle branch block pattern suggesting a malpositioned ventricular lead in the left ventricle. However, diagnostic work-up revealed that the lead was appropriately located in the right ventricular apex. Diagnostic maneuvers and clues for ...
Gordon P A - - 2007
Isolated congenital heart block is strongly associated with anti-Ro antibodies. It occurs in 2% of anti-Ro antibody positive pregnancies with a recurrence rate of 17-19%. Mortality is high in the first year of life (12-41%) and is predominantly due to dilated cardiomyopathy. A prolonged QTc occurs in 15-22% of cases ...
Thompson Paul D - - 2007
Endurance exercise training produces a series of cardiac adaptations including resting bradycardia, first and second degree atrioventricular block, increased intolerance to orthostatic stress, and enlargement of the left ventricular walls and of all cardiac chambers. Cardiac dimensions may be increased beyond the upper limits of normal and some endurance athletes ...
Giron Francesco - - 2007
PURPOSE: The aim of this study was to examine whether a double-bundle anterior cruciate ligament (ACL) reconstruction with a transtibial approach could position the tibial and femoral tunnels accurately in the native bundle attachments. METHODS: In 21 fresh-frozen knees the tibial and femoral attachments of the anteromedial (AM) and posterolateral ...
Enjoji Yoshihisa - - 2006
We report a rare case of bundle branch reentrant ventricular tachycardia [BBRVT]. A 67-year-old female was admitted for management of wide QRS tachycardia (right bundle branch block [RBBB] and a southwest axis). The mapping procedure revealed the tachycardia circuit consisted of the left anterior fascicle (LAF) as an antegrade, and ...
Brodmann Marianne - - 2006
BACKGROUND: Significant bradycardia followed by cardiac arrest related to single bolus administration of X-ray contrast medium into a peripheral artery has not, to our knowledge, been described in the literature. METHODS AND RESULTS: While performing a percutaneous transluminal angioplasty of the left superficial femoral artery in a 68-year old patient ...
Faber Lothar - - 2007
AIM: To provide tools for predicting the course of AV conduction disturbances after ethanol-induced septal ablation (PTSMA) for hypertrophic obstructive cardiomyopathy (HOCM). METHODS AND RESULTS: Based on a scoring system developed 1996-1998 and including parameters from baseline ECG, heart rate profile, severity of outflow obstruction (LVOTO), peri-interventional enzyme kinetics, and ...
Church Whitney M - - 2007
Third degree atrioventricular (AV) block in dogs is thought to be most frequently characterized by non-specific fibrotic changes in the AV node. However, it may occur secondary to an undiagnosed inflammatory process. We report a case of third degree AV block in a dog, secondary to acute lymphocytic-plasmacytic myocarditis that ...
Stöllberger Claudia - - 2007
BACKGROUND: Left-ventricular hypertrabeculation/noncompaction (LVHT) is characterized by prominent trabeculations and intertrabecular recesses. LVHT is usually diagnosed if a patient is referred for echocardiography. The study assessed if cardiologic and neurologic findings differ relating to indication for echocardiography. METHODS: Included were patients in whom LVHT was diagnosed in one echocardiographic laboratory ...
Mitchell Andrew R J - - 2007
A 61-year-old man presented with recurrent ventricular tachycardia (left bundle branch block morphology, superior axis). Magnetic resonance imaging (Fig. 1) and contrast-enhanced transthoracic echocardiography (Fig. 2) demonstrated an ill-defined mass in the right heart along the free wall of the right atrium, involving the tricuspid valve and extending into the ...
Seferović P M - - 2006
Rhythm and conduction disturbances and sudden cardiac death (SCD) are important manifestations of cardiac involvement in autoimmune rheumatic diseases (ARDs). In patients with rheumatoid arthritis (RA), a major cause of SCD is atherosclerotic coronary artery disease, leading to acute coronary syndrome and ventricular arrhythmias. In systemic lupus erythematosus (SLE), sinus ...
Gilbert-Barness Enid - - 2006
Fetal dysrhythmias are usually transient. Abnormal fetal rates and rhythms during labor are "functional." Fetal dysrhythmias may be associated with congenital heart disease and fetal hydrops. Bradycardia is usually related to fetal distress; supraventricular tachycardia, atrial flutter, and atrial fibrillation may be associated with severe congestive heart failure. Ventricular fibrillation ...
Gray Richard A - - 2006
BACKGROUND: Fiber orientation in the heart plays a crucial role in the anisotropic nature of impulse propagation and the formation of virtual electrode polarization (VEP). The relationship between anisotropic conduction velocity and VEP is not fully understood. METHODS AND RESULTS: We recorded transmembrane potential from the surface of isolated rabbit ...
Lundberg I E - - 2006
Cardiovascular manifestations constitute a major cause of death in myositis. Despite this, clinically manifest cardiac involvement in polymyositis and dermatomyositis is relatively rare. In contrast, subclinical manifestations are frequently reported and are predominated by conduction abnormalities and arrhythmias detected by ECG. The most frequently reported clinically overt manifestations are congestive ...
Andersen Henrik Ø - - 2006
BACKGROUND: A serious complication after surgical closure of ventricular septal defect (VSD) is complete heart block. In this retrospective study, we reviewed the incidence of complete heart block after surgical closure of a VSD at Great Ormond Street Hospital from 1976 to 2001 to identify any particular anatomic features that ...
Hudcova Jana - - 2006
Electroconvulsive therapy (ECT) requires brief general anesthesia, and succinylcholine is a depolarizing neuromuscular blocking agent that is frequently used for this procedure. Its use leads to intracellular potassium release into the extracellular space, usually increasing the serum potassium level by 0.5-1 mEq/L, with little clinical significance. However, long-term immobilization has ...
Antkiewicz Dagmara S - - 2006
The zebrafish (Danio rerio) has become an attractive vertebrate model for studying developmental processes, and is emerging as a model system for studying the mechanisms by which xenobiotic compounds perturb normal development. Embryos treated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) shortly after fertilization exhibit a range of adverse effects on the heart: an ...
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