Publication
Title
Monomorphic ventricular tachycardia in patients with Brugada syndrome : a multicenter retrospective study
Author
Abstract
BACKGROUND Isolated cases of monomorphic ventricular tachycardia (MVT) in patients with Brugada syndrome (BrS) have been reported. OBJECTIVE We aimed to describe the incidence and characteristics of MVT in a cohort of patients with BrS who had received an implantable cardioverter-defibrillator (ICD). METHODS Data from 834 patients with BrS implanted with an ICD in 15 tertiary hospitals between 1993 and 2014 were included. RESULTS The mean age of enrolled patients was 45.3 +/- 13.9 years; 200 patients (24%) were women. During a mean follow-up of 69.4 +/- 54.3 months, 114 patients (13.7%) experienced at least 1 appropriate ICD intervention, with MVT recorded in 35 patients (4.2%) (sensitive to antitachycardia pacing in 15 [42.8%]). Only QRS width was an independent predictor of MVT in the overall population. Specifically, 6 (17.1%) patients presented with right ventricular outflow tract tachycardia (successfully ablated from the endocardium in 4 and epicardial and endocardial ablation in 1), 2 patients with MVT arising from the left ventricle (1 successfully ablated in the supra lateral mitral annulus), and 2 (5.7%) patients with bundle branch reentry ventricular tachycardia. Significant structural heart disease was ruled out by echocardiography and/or cardiac magnetic resonance imaging. CONCLUSION In this retrospective study, 4.2% of patients with BrS implanted with an ICD presented with MVT confirmed as arising from the right ventricular outflow tract tachycardia in 6, patients with MVT arising from the left ventricle in 2, and patients with bundle branch reentry ventricular tachycardia in 2. Endocardial and/or epicardial ablation was successful in 80% of these cases. These data imply that the occurrence of MVT should not rule out the possibility of BrS. This finding may also be relevant for ICD model selection and programming.
Language
English
Source (journal)
Heart rhythm
Publication
2016
ISSN
1547-5271
Volume/pages
13:3(2016), p. 669-682
ISI
000372367800009
Full text (Publishers DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
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Creation 10.05.2016
Last edited 30.04.2017
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