Abstract

Background: Implantable cardioverter-defibrillators (ICDs) have traditionally relied on multiple ventricular fibrillation (VF) inductions with defibrillation conversion testing at implantation. Little data are available assessing the prevalence of high defibrillation energy requirements in cardiac resynchronization pacemakers with defibrillators (CRT-D). The present analysis evaluates the prevalence of high energy requirements in CRT-D patients, in comparison to patients receiving modern single- or dual-chamber ICD systems, from a large ICD patient cohort in the ASSURE Study.

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