The benefit of prophylactic implantation of an implantable cardioverter-defibrillator (ICD) or cardiac resynchronization therapy (CRT) ICD (CRT-D) in improving mortality in patients with heart failure has been firmly established by multiple randomized controlled trials (RCT) (1,2,3,4). However,it has also been well documented that patients receiving ICDs in the “real world” are older and sicker,[...]











































