Clinical practice of defibrillator implantation after myocardial infarction: impact of implant time: results from the PreSCD II registry.

Current guidelines recommend implantable cardioverter-defibrillator (ICD) therapy for primary prevention of sudden cardiac death in patients with the reduced left ventricular function (LVEF 30%) not earlier than 40 days after myocardial infarction (MI). The aim of the prospective Prevention of Sudden Cardiac Death II (PreSCD II) registry was to investigate the clinical practice of ICD therapy in post-MI patients and to assess the impact on survival.