<unk>  prevention strategy for heart failure patients with NYHA class II or III, and  LVEF ≤35% at least 40 days after myocardial infarction is ICD implantation. In patients with LVEF  ≤30% and prior MI  and NYHA class I symptoms , ICD implantation was associated with survival benefit. Analysis of  MADIT, MADIT-II, and SCD-HeFT showed survival benefit of ICD implantation for<unk>  prevention of ventricular arrhythmia. There is not survival benefit of  ICD implantation in patients with NYHA class IV heart failure.
Ventricular tachycardia primary prevention
Ventricular tachycardia secondary prevention
Pulseless ventricular tachycardia primary prevention
Atrial fibrillation primary prevention
Third degree AV block primary prevention
Atrial fibrillation secondary prevention
Ventricular tachycardia future or investigational therapies
Third degree AV block secondary prevention