Figure 94-34

Polymorphic ventricular tachycardia generating into ventricular
fibrillation induced by programmed electrical stimulation without the use of the antiarrhythmic drugs in a patient with Brugada syndrome and several syncopal episodes.This patient required cardioversion for termination of this rhythm. HBE= His bundle electrgram; HRA= high right atrium; RVA=right ventricular apex.