Efficacy and Myocardial Injury With Subcutaneous Implantable Cardioverter Defibrillators - Computer Simulation of Defibrillation Shock Conduction.

Background: Subcutaneous implantable cardiac defibrillator (S-ICD) systems have a lower invasiveness than traditional ICD systems, and expand the indications of ICD implantations. The S-ICD standard defibrillation shock output energy, however, is approximately 4 times that of the traditional ICD system. This raises concern about the efficacy of the defibrillation and myocardial injury.