A PRospective, rAndomizEd Comparison of subcuTaneOous and tRansvenous ImplANtable Cardioverter Defibrillator Therapy

Inclusion Criteria: * Patients 18 years and older * Patients with class I or IIa indication for ICD therapy according to the ACC/AHA/ESC 2006 Guidelines for Management of Patients With Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death Exclusion Criteria: * Patients with documented therapy refractory monomorphic ventricular tachycardia * Patients having an indication for pacing therapy * Patients with ventricular tachycardia less than 170 bpm * Patients failing appropriate QRS/T-wave sensing with the S-ICD ECG patient screening tool provided by Cameron Health/Boston Scientific * Patients with incessant ventricular tachycardia * Patients with a serious known concomitant disease with a life expectancy of less than one year * Patients with circumstances that prevent follow-up (no permanent home or address, transient, etc.) * Patients who have had a previous ICD implant * Patient who receive cardiac contractility modulation therapy or are likely to receive cardiac contractility modulation therapy. * Patients who are unable to give informed consent