60-year-old male admitted to hospital with chest pain. He was diagnosed as Acute Extensive Anterior Myocardial Infarction (AMI) and treated with stent placement. Postoperatively, the Electrocardiogram (ECG) showed third degree atrioventricular block. The patient went in cardiac shock and was treated with both temporary pacemaker and Intra Aortic Balloon Pumping (IABP). Despite IABP, antiarrhythmic drugs and β-blocker, Ventricular Tachycardia (VT) and Ventricular Fibrillation (VF) had been occupied frequently and cardioversion was performed 63 times.