title: Incidence of Atrial Tachyarrhythmias in Patients With Early Repolarization Syndrome.
abstract: Atrial tachyarrhythmias (ATAs) occur in a significant proportion of Brugada syndrome (BrS) patients and are often an important cause of inappropriate shocks. The aim of this retrospective study was to evaluate the incidence of ATAs and ATA-induced inappropriate shocks in early repolarization syndrome (ERS) patients as compared to BrS patients.We analyzed data from 20 consecutive patients who were diagnosed with ERS and compared them with patients diagnosed with BrS (n = 31). Clinical and ICD interrogation data were collected and analyzed for all events with ICD shocks.Three patients had a history of atrial fibrillation (AF) prior to ICD implantation. One patient had AV reentrant tachycardia and was successfully ablated before ICD implantation. ATAs were newly diagnosed in 4 patients with no prior history of AF. There were no significant differences in gender, age, or left atrial diameter between ATA development. Four (20%) of 20 consecutive patients received inappropriate ICD shocks for ATAs. One suffered from repeat inappropriate shocks triggered by paroxysmal AF and received catheter ablation for AF.ATAs were not infrequent in patients with ERS and seemed to be related to inappropriate ICD therapy. Careful ICD programming is required to reduce ATA-related inappropriate ICD shock in patients with ERS.
authors.affiliation: Division of Cardiology, Department of Internal Medicine, Pusan National University Yangsan Hospital, Pusan National University of Medicine.
authors.forename: Ki Won
authors.initials: KW
authors.lastname: Hwang
authors.forename: Gi-Byoung
authors.initials: GB
authors.lastname: Nam
authors.forename: Junhee
authors.initials: J
authors.lastname: Han
authors.forename: Yong Giun
authors.initials: YG
authors.lastname: Kim
authors.forename: Hyung Oh
authors.initials: HO
authors.lastname: Choi
authors.forename: Jun
authors.initials: J
authors.lastname: Kim
authors.forename: Kee-Joon
authors.initials: KJ
authors.lastname: Choi
authors.forename: You-Ho
authors.initials: YH
authors.lastname: Kim
mesh_terms: D000328:Adult; D053840:Brugada Syndrome / Q000150:complications* / Q000628:therapy; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D056910:Republic of Korea / Q000453:epidemiology; D012189:Retrospective Studies; D013610:Tachycardia / Q000453:epidemiology / Q000209:etiology*; D055815:Young Adult