[Safety and efficacy of intraoperative defibrillation threshold measured by defibrillation safety margin in 52 patients with implantable cardioverter defibrillator].

Objective: To observe the safety and efficacy of implantable cardioverter defibrillator (ICD) intraoperative defibrillation threshold (DFT) measured by defibrillation safety margin (DSM).

Methods: Fifty-two patients underwent ICD implantation were enrolled in this study (25 single chamber ICD, 23 double chamber ICD, 4 three chamber ICD). DFT was measured by DSM method.