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Early repolarization of surface ECG predicts fatal ventricular arrhythmias in patients with arrhythmogenic right ventricular dysplasia/cardiomyopathy and symptomatic ventricular arrhythmias.
- Source :
-
International journal of cardiology [Int J Cardiol] 2015 Oct 15; Vol. 197, pp. 300-5. Date of Electronic Publication: 2015 Jun 14. - Publication Year :
- 2015
-
Abstract
- Background: The clinical characteristics and prognostic value of early repolarization (ER) in patients with arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) and symptomatic ventricular arrhythmias remain unclear. We investigated the prevalence, clinical features, and cardiovascular outcomes of patients with symptomatic ARVD/C and ER.<br />Methods: A total of 59 consecutive ARVD/C patients hospitalized for catheter ablation, presenting with and without J-point elevations of ≥0.1mV in at least 2 inferior leads or lateral leads were enrolled. Clinical characteristics, electrophysiological study, substrate mapping, catheter ablation, and future clinical outcomes in a prospective patient registry were investigated.<br />Results: ER was observed in 38 patients (64.4%). Among these patients, ER was found in the inferior leads in 18 patients (47.4%), in the lateral leads in 2 patients (5.3%), and in both inferior and lateral leads in 18 patients (47.4%). Patients exhibiting ER were commonly men, had lower right ventricular ejection fraction, had higher incidence of clinical ventricular fibrillation or aborted sudden cardiac death, had more defibrillator implantations, had higher the need of epicardial ablation, and had more major criteria according to the task force criteria. Significant higher incidence of induced ventricular fibrillation and shorter tachycardia cycle length of induced ventricular tachycardia were found during procedure. The recurrence rate of ventricular arrhythmias did not differ between patients with and without ER after catheter ablation.<br />Conclusions: A high prevalence of electrocardiographic ER was found among symptomatic ARVD/C patients undergoing catheter ablation. ER in 12-lead ECG is associated with an increased risk of clinical fatal ventricular arrhythmias.<br /> (Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)
- Subjects :
- Adult
Arrhythmogenic Right Ventricular Dysplasia mortality
Cohort Studies
Female
Follow-Up Studies
Humans
Longitudinal Studies
Male
Middle Aged
Predictive Value of Tests
Prospective Studies
Registries
Tachycardia, Ventricular mortality
Time Factors
Arrhythmogenic Right Ventricular Dysplasia diagnosis
Arrhythmogenic Right Ventricular Dysplasia physiopathology
Electrocardiography trends
Tachycardia, Ventricular diagnosis
Tachycardia, Ventricular physiopathology
Subjects
Details
- Language :
- English
- ISSN :
- 1874-1754
- Volume :
- 197
- Database :
- MEDLINE
- Journal :
- International journal of cardiology
- Publication Type :
- Academic Journal
- Accession number :
- 26148770
- Full Text :
- https://doi.org/10.1016/j.ijcard.2015.06.007