Estimated longevity of contemporary subcutaneous implantable cardioverter-defibrillators: Multicenter real-world data

The subcutaneous implantable cardioverter-defibrillator (S-ICD) has become an established alternative to the transvenous ICD and has been incorporated into international guidelines for the prevention of sudden cardiac death over the past decade (1, 2). Device longevity is a critical aspect of ICD therapy, yet contemporary data on the performance of current S-ICD models are limited. Early reports largely reflect first-generation devices (3, 4), which differ from those in current practice due to progressive design improvements and the resolution of a prior advisory on premature battery depletion (5).