title: A case of inappropriate implantable cardioverter defibrillator therapy induced by T-wave oversensing due to hyperkalemia.
abstract: There have been reports of hyperkalemia-induced T-wave oversensing in patients with implantable cardioverter defibrillators (ICDs). However, a comparison of T-wave amplitudes and morphologies between the surface 12-lead electrocardiogram (ECG) and ICD electrogram has not been reported. We present the case of a 70-year-old man who received inappropriate ICD shocks due to hyperkalemia-induced T-wave oversensing. The T-wave amplitudes on both the ICD electrogram and 12-lead ECG corresponded and normalized after normalization of the potassium level.
authors.affiliation: Department of Cardiology, Himeji Cardiovascular Center, 520 kou saishou, Himeji, Hyogo, Japan.
authors.forename: Kosuke
authors.initials: K
authors.lastname: Aoki
authors.affiliation: Department of Cardiology, Himeji Cardiovascular Center, 520 kou saishou, Himeji, Hyogo, Japan.
authors.forename: Katsunori
authors.initials: K
authors.lastname: Okajima
authors.affiliation: Department of Cardiology, Himeji Cardiovascular Center, 520 kou saishou, Himeji, Hyogo, Japan.
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Kiuchi
authors.affiliation: Department of Cardiology, Himeji Cardiovascular Center, 520 kou saishou, Himeji, Hyogo, Japan.
authors.forename: Kiminobu
authors.initials: K
authors.lastname: Yokoi
authors.affiliation: Department of Cardiology, Himeji Cardiovascular Center, 520 kou saishou, Himeji, Hyogo, Japan.
authors.forename: Jin
authors.initials: J
authors.lastname: Teranishi
authors.affiliation: Department of Cardiology, Himeji Cardiovascular Center, 520 kou saishou, Himeji, Hyogo, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Shimane
keywords: Hyperkalemia; Implantable cardioverter defibrillator; Inappropriate ICD therapy; T-wave oversensing