Understanding Outcomes With the EMBLEM™ S-ICD in Primary Prevention Patients With Low Ejection Fraction

Inclusion Criteria: * Patient with ischemic or non-ischemic heart disease who meets current guidelines for ICD therapy and intends to undergo a de novo implant procedure for an EMBLEM™ S-ICD (or newer generation BSC S-ICD) * Left ventricular ejection fraction ≤ 35% * A passing EMBLEM™ S-ICD (or newer generation BSC S-ICD) screening ECG * Patient ≥ 21 years of age willing and capable of giving informed consent * Patient willing and capable of complying with follow-up visits Exclusion Criteria: * Patient with a history of spontaneous sustained VT or VF * Patient with bradycardia pacing indication * Patient eligible and scheduled for cardiac resynchronization implant * Patient with a previous S-ICD or a previous transvenous pulse generator (pacemaker or defibrillator) * Patient in NYHA Class IV documented in the medical records within 90 days before enrollment * Patient with life expectancy shorter than 18 months due to any medical condition (e.g., cancer, uremia, liver failure, etc…) * Patient receiving hemodialysis within 180 days before to enrollment * Patients unable to give consent in person, including patients unable to read or write * Patient who is known to be pregnant or plans to become pregnant over the course of the trial * Patient unwilling or unable to cooperate with the protocol * Participation in concurrent clinical study without prior approval from Boston Scientific * Medical status (e.g., hemodynamic conditions ) of the patient doesn't allow programming devic…