Abstract

Transvenous implantable cardiac defibrillators (ICD) have saved many lives. However, ICD leads are also the “weakest link” in an ICD system and lead fracture is one of the principal reasons for system failure. Inappropriate shocks or asystole in a pacemaker-dependent patient, secondary to oversensing, are severe consequences of lead fracture. In the future, improvements in lead design and development of downloadable algorithms will aid in tackling this very important clinical problem. This article discusses the incidence and causes of lead fracture, diagnostic strategies, and therapeutic options for this important clinical problem.

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