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.