Ventricular tachycardia late after myocardial infarction is usually due to reentry in the infarct
region. These reentry circuits can be large, complex and difficult to define, impeding study in …

Highlights•Postinfarction ventricular tachycardia (VT) caused by a reentrant circuit is an
important clinical problem.•Catheter ablation may not prevent VT because of difficulty in …

Background During atrial fibrillation (AF), the atrium is activated by multiple wavelets that
continuously change in size and direction. The aim of this study was to correlate the …

A system and method is disclosed to improve the ability of physicians, researchers and
others to digest large amounts of cardiac electrophysiologic data acquired during cardiac …

Background Although radiofrequency catheter ablation of atrial flutter is associated with a
high rate of initial success, several clinical issues regarding this therapy remain to be …

Entrainment Mapping. Many atrial tachycardias, atrial flutter, and postmyocardial infarction
ventricular tachycardias are due to reentry through large “macroreentrant” circuits. These …

BACKGROUND It recently has been demonstrated that during atrial fibrillation, a short and
variable excitable gap exists, allowing regional control of atrial fibrillation by local …

OBJECTIVES In this study, the transverse conduction capabilities of the crista terminalis (CT)
were determined during pacing in sinus rhythm in patients with atrial flutter and atrial …

1. Introduction fundamental features that determine whether the atrial tachyarrhythmia
becomes atrial flutter or atrial fibrillation There has been a long recognized clinical …

Background—The complexity of atrial tachycardias (ATs) makes the electroanatomic
characterization of the arrhythmogenic substrate difficult with conventional mapping …