Why the study?
Device longevity is critical in ICD therapy, but contemporary data on the performance of current S-ICD models are limited as early reports largely reflect first-generation devices.
This study aims to provide contemporary real-world data on the estimated longevity of current subcutaneous implantable cardioverter-defibrillator models.
Improved contemporary S-ICD longevity may inform selection; hypothesis-generating and should not yet change practice.
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).
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Ziacchi et al. (2026) studied this question.
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