Serial electrocardiographic changes in patients with idiopathic dilated cardiomyopathy
Broad QRS and bundle-branch blocks are associated with poor outcomes in patients with DCM, however, studies on changes in QRS duration and morphology over long-term are limited. We retrospectively analyzed changes in ventricular activation and AV conduction in serial ECGs of 165 DCM patients with a...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
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| Series: | Indian Heart Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0019483225000458 |
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| Summary: | Broad QRS and bundle-branch blocks are associated with poor outcomes in patients with DCM, however, studies on changes in QRS duration and morphology over long-term are limited. We retrospectively analyzed changes in ventricular activation and AV conduction in serial ECGs of 165 DCM patients with a follow-up of at least 5 years from 2003 to 2022. The mean QRS duration at the last follow-up was 114.2 ± 29 vs 106.2 ± 25.3 msec at the baseline(p < 0.0001). Individuals who showed ≥10msec increase in QRS duration also had a higher prevalence of ventricular conduction defects (68%). 13.8% of patients developed broadening of QRS, with an LBBB pattern in over 50%. |
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| ISSN: | 0019-4832 |