Questions 17 - 20 refer to the following case study.
The patient is admitted August 15 with a past history of hypertension, coronary artery disease, hypercholesterolemia, and previous cholecystectomy. He had an inferior wall myocardial infarction on June 27 with 100% occlusion of the right coronary artery and underwent coronary angioplasty of the right coronary artery with reduction of lesion to 10%. During cardiac rehabilitation, he was noted to have prolonged ventricular tachycardia, which was essentially asymptomatic. Repeat cardiac catheterization on an outpatient basis in mid-July revealed right coronary artery occlusion of 20%. During this current admission, EKG revealed right bundle branch block. Physical examination revealed blood pressure of 156/92, heart rate of 61, respiratory rate of 20, and oxygen saturation of 96% on room air. Patient is admitted for initiation of Amiodarone therapy and placement of an implantable cardioverter defibrillator for ventricular tachycardia. During this admission, the patient did well and had no episodes of ventricular tachycardia.
On August 17, the patient underwent placement of implantable cardioverter defibrillator without incident. A hematoma at the insertion site was noted the day after procedure, and an ultrasound was performed to determine the severity of it. After the hematoma was diagnosed as non-serious, the patient was discharged home on August 20.
Identify the principal diagnosis.