The clinical and electrophysiological characteristics of nonsustained repetitive monomorphic ventricular tachycardia from the left His-Purkinje system.

RMVT arising from the left His-Purkinje system is a special arrhythmic and nonverapamil-sensitive entity. The electrophysiological mechanism of this treatment appears to be focal firing, which is amendable to catheter ablation in symptomatic and high-burden patients.