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Figure 2 Polymorphic ventricular tachycardia generating into ventricular fibrillation induced by programmed electrical stimulation without the use of antiarrhythmic drugs in a patient with Brugada syndrome and several syncopal episodes. This patient required cardioversion for termination of this rhythm. HBE = His bundle electrogram; HRA = high right atrium; RVA = right ventricular apex.
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