we examined the value of clinical variables , chronic 24-hour ambulatory ecg monitoring , and chronic electrophysiologic ( ep ) testing in 49 patients with recurrent and refractory sustained ventricular tachycardia ( vt ) and ventricular fibrillation ( vf ) treated with chronic oral amiodarone in order to develop a prospective approach to the management of these patients .
C0042510
ventricular
C0002598
amiodarone