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Special features of right bundle branch block in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia
- Source :
-
International Journal of Cardiology . May2012, Vol. 157 Issue 1, p102-103. 2p. - Publication Year :
- 2012
-
Abstract
- Abstract: 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. 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. 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 01675273
- Volume :
- 157
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Cardiology
- Publication Type :
- Academic Journal
- Accession number :
- 74659085
- Full Text :
- https://doi.org/10.1016/j.ijcard.2011.09.070