References in periodicals archive ?
Complete bundle branch block as an independent predictor of all-cause mortality: report of 7,073 patients referred for nuclear exercise testing.
The fQRS on a 12-lead resting ECG was defined by the presence of various RSR' patterns (QRS duration <120 ms) with or without Q wave, which include an additional R wave (R' prime) or notching of the R wave or S wave, or the presence of more than one R prime (fragmentation) (>1 R' or notching of S wave or R wave) without typical bundle branch block in two contiguous leads corresponding to a major lead set for major coronary artery territory (6) (Fig.
The differential diagnosis for ST-SE in the right precordial leads in conditions other than BRS includes anteroseptal myocardial infarction or ischemia, right ventricular ischemia or infarction, early repolarization syndrome, acute pulmonary embolism, dissecting aortic aneurysm, right bundle branch block, left bundle branch block, left ventricular hypertrophy, hyperkalemia, hypercalcemia, arrhythmogenic right ventricular dysplasia/cardiomyopathy, acute myocarditis and pericarditis, tricyclic antidepressants, cocaine intoxication, hypothermia, mediastinal tumors compressing right ventricular outflow tract, right ventricular outflow tract obstruction, various central and autonomic nervous system abnormalities, and Friedreich ataxia.
Patients in Emergency Departments (ED) with suspected myocardial infarction (MI), commonly referred to as a heart attack, frequently have a diffuse 12-lead ECG abnormality known as Left Bundle Branch Block (LBBB).
20 seconds and resembled left bundle branch block, consistent with the device's pacing the right ventricle.
MIs included all new ST-segment elevations, Q-wave events, left bundle branch blocks, and elevations in serum levels of creatine kinase that exceeded three times the upper limit of normal.
His electrocardiogram showed alternating right and left bundle branch blocks without PR or ST interval changes.
Brugada syndrome was first described in 1992 as a new autosomal dominant inherited channelopathy occurring in the structurally normal heart, characterized by ST-segment elevation in the right precordial leads, right bundle branch block, and susceptibility to ventricular tachyarrhythmia's (1).
The initial 12-lead electrocardiogram showed sinus rhythm with 2:1 AV block, right bundle branch block, left anterior fascicular block, and ST-segment depression in precordial leads V1 to V3 (Figure 1).
Food and Drug Administration for the expansion of its CRT-D indication to include high-risk(2) NYHA Class I and II patients with Left Bundle Branch Block.
Men with heart failure and/or bundle branch block appear to be preferentially treated more aggressively with implantable devices than are women with similar health status, a review of nearly 11,000 cases suggests.