PURPOSE: Atrial fibrillation is a common arrhythmia associated with increased cardiovascular
morbidity and mortality. This study was undertaken to identify the natural history of this …

Arrhythmogenic cardiomyopathy (ACM) is an arrhythmogenic disorder of the myocardium not
secondary to ischemic, hypertensive, or valvular heart disease. ACM incorporates a broad …

This document is intended to help front-line cardiologists, arrhythmia specialists, and other
health care professionals interested in the care of patients who present with presumed …

The recommendations listed in this guideline are, whenever possible, evidence based. An
initial extensive evidence review, which included literature derived from research involving …

Background Atrial fibrillation is the most common type of cardiac arrhythmia and a leading
cause of cardiovascular morbidity, particularly stroke. The cardiac gap-junction protein …

Background Many patients requiring pacemaker or implantable cardioverter–defibrillator (ICD)
surgery are taking warfarin. For patients at high risk for thromboembolic events, …

Background—Establishing a diagnosis in patients with unexplained syncope is complicated
by infrequent and unpredictable events. Prolonged monitoring may be an alternative …

BACKGROUND: Physicians in all fields of medicine may encounter patients with long QT
syndrome (LQTS). It is important to define the percentage of physicians capable of …

Background— The efficacy of cardiac pacing for prevention of syncopal recurrences in patients
with neurally mediated syncope is controversial. We wanted to determine whether pacing …

Background—The conventional investigation of patients who present with syncope involves
short-term ECG monitoring or provocative testing with head-up tilt and electrophysiological …