title: Inappropriate Shock delivered by Implantable Cardioverter Defibrillator--Cardiac Resynchronization Therapy (ICD-CRT) due to myopotential oversensing.
abstract: The clinical efficacy of ICD-CRT therapy depends on accurate sensing of intracardiac signals and sensing algorithms. We report the occurrence of sensing abnormality in a patient with ICD-CRT. In this patient, oversensing of myopotentials during strenuous muscular activity resulted in an inappropriate ICD-CRT discharge. Although modern ICDs are highly effective in detecting and terminating malignant tachyarrhythmias, their detection specificity must be improved. It is possible to find the mechanism of arrhythmia by EGM. Simple device reprogramming make it possible to avoid the oversensing of myopotentials.
authors.affiliation: Department of Pacemaker and Electrophysiology, Rajaie Cardiovascular Medical and Research Center, Tehran, Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Barakpour
authors.forename: Zahra
authors.initials: Z
authors.lastname: Emkanjoo
authors.forename: Abolfath
authors.initials: A
authors.lastname: Alizadeh
authors.forename: Mohammad Ali
authors.initials: MA
authors.lastname: Sadr-Ameli