Relation of Signal-Averaged Late Potentials to Inducible Ventricular Arrhythmias.

Studies the relationship between the signal-averaged electrocardiogram and electrophysiologic testing. Correlation of signal-averaged electrocardiographic determination of late potentials with prior or induced sustained ventricular tachycardia; Significant value in identifying patients with prior clinical ventricular tachycardia; Correlation of late potentials with ventricular tachycardia.