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Special features of right bundle branch block in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia.
- Source :
-
International journal of cardiology [Int J Cardiol] 2012 May 17; Vol. 157 (1), pp. 102-3. Date of Electronic Publication: 2011 Oct 28. - Publication Year :
- 2012
-
Abstract
- Unlabelled: We searched for special features in patients with complete and incomplete right bundle branch block diagnosed as having arrhythmogenic right ventricular cardiomyopathy/dysplasia. Whether right bundle branch block is a frequent finding in arrhythmogenic right ventricular cardiomyopathy should be studied. The question is whether special features exist such as T-wave inversions, localized right precordial QRS prolongation and r'/s ratio<1.<br />Results: ARVC could be diagnosed according to ISFC/ESC criteria in 374 patients. CRBBB was found in 22 cases (6%) and iCRBBB was present in 47 cases (12.5%). In CRBBB T wave inversions ≥ V4 was found in 10 cases (n.s.) and r'/s ratio<1 was present in 12 cases (p<0.001). In iCRBBB T wave inversions ≥ V4 was found in 10 cases (n.s.) and ST segment elevation in right precordial leads was present in 19 cases (p<0.005). In all patients with ARVC localized right precordial QRS prolongation was found. Patients with CRBBB have a bad prognosis: 17 of 22 patients developed biventricular heart failure requiring heart transplantation and diuretic therapy.<br />Conclusions: CRBBB and iCRBBB are infrequent findings in arrhythmogenic right ventricular cardiomyopathy. Complete right bundle branch block is characterized by r'/s ratio<1. There are no significant T wave inversions ≥ V4. Incomplete right bundle branch block is characterized by ST segment elevation in right precordial leads but not by T wave inversions ≥ V4.<br /> (Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.)
- Subjects :
- Adult
Arrhythmogenic Right Ventricular Dysplasia diagnosis
Bundle-Branch Block diagnosis
Electrocardiography methods
Female
Follow-Up Studies
Humans
Male
Middle Aged
Arrhythmogenic Right Ventricular Dysplasia epidemiology
Arrhythmogenic Right Ventricular Dysplasia physiopathology
Bundle-Branch Block epidemiology
Bundle-Branch Block physiopathology
Subjects
Details
- Language :
- English
- ISSN :
- 1874-1754
- Volume :
- 157
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- International journal of cardiology
- Publication Type :
- Academic Journal
- Accession number :
- 22036093
- Full Text :
- https://doi.org/10.1016/j.ijcard.2011.09.070