VENTRICULAR LATE POTENTIALS

Abstract

Ventricular late potentials are low amplitude, high frequency wave forms appearing in the terminal part of QRS complex that may extend up to a variable length in ST segment. Ventricular late potentials are frequently seen in patients with sustained ventricular tachycardia. They are noninvasive markers of an electrophysiological substrate for ventricular tachycardia that escort to sudden cardiac death. Beriberi and Simson discovered ventricular late potentials in dogs for the first time in history. Initially ventricular late potentials were obtained directly from the endocardium or epicardium, but later on it was found that they can be recorded from the body surface.