Abnormal Cellular Repolarization due to Implantable Cardioverter Defibrillator Shock: A Case Report

Andrea Campana, Arturo Granato, Nicola Rovai, Giuseppe Di Benedetto


Implantable cardioverter-defibrillators (ICDs) have a considerable impact on the therapy of patients with threatening ventricular arrhythmias, significantly reducing the risk of sudden death. Even though newest devices have achieved a remarkable reliability, the delivery of inappropriate shocks is still possible. In this paper a singular case of T-wave oversensing is described, associated with a high number of inappropriate shocks and consequent rapid depletion of ICD battery. Persistent abnormalities of cellular repolarization following a first appropriate shock were believed to be at the origin of T-wave oversensing.

J Med Cases. 2014;5(2):92-97
doi: http://dx.doi.org/10.14740/jmc1642w


ICDs; T-wave oversensing; Inappropriate shocks; Battery depletion; Remote monitoring

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