Subcutaneous Implantable Cardioverter-Defibrillator Implantation Without Defibrillation Testing

Defibrillation testing (DT) does not improve shock efficacy or reduce the risk for arrhythmic death in patients undergoing routine transvenous implantable cardioverter-defibrillator (ICD) placement and is no longer compulsory for left pectoral transvenous ICDs (1). [...]the majority of patients who did not undergo DT underwent either submuscular (subserratus) or subfascial implantation of the pulse generator, which minimizes fat underlying the pulse generator and likely favors lower defibrillation energy requirements. [...]these results may not be similar for purely subcutaneous implants. DT (n = 55) No DT (n = 55) p Value Implant location