A 61-year-old man was referred for treatment of recurrent syncopal ventricular arrhythmias, including two documented episodes of ventricular fibrillation (VF) due to alcohol-induced dilated cardiomyopathy. The patient had been taking amiodarone for 8 months. In addition he was taking an ACE inhibitor and spironolactone. A standard 12-lead ECG showed normal sinus rhythm with a QRS duration of 118 ms. Echocardiography confirmed the presence of severely impaired left ventricular function with an …