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Catheter ablation for atrial fibrillation in hypertrophic cardiomyopathy: a systematic review and meta-analysis
Abstract
Objective: Atrial fibrillation (AF) is common in hypertrophic cardiomyopathy (HCM) and is associated with a high risk of stroke. The efficacy and safety of catheter ablation in this setting is poorly characterised. We aimed to systematically review the existing literature and to perform a meta-analysis to determine the efficacy and safety of catheter ablation of AF in patients with HCM. Methods: Random-effects meta-analysis of studies comparing HCM versus non-HCM controls. The outcomes of freedom from AF/atrial tachycardia, and acute procedure-related complications were assessed. Studies were searched on MEDLINE, EMBASE, COCHRANE and clinicaltrials.gov. Results: Fourteen studies were considered eligible for the systematic review, of which five were included in the meta-analysis. Freedom from AF/atrial tachycardia relapse was higher in patients without HCM (after a single procedure: 38.7% HCM vs 49.8% controls, OR=2.25, 95% CI 1.09 to 4.64, p=0.03; after ≥1 procedure: 51.8% HCM vs 71.2% controls, OR=2.62, 95% CI 1.52 to 4.51, p=0.0006; I 2=33% and 26%, respectively). Risk of procedure-related adverse events was low. Repeat procedures (mean difference=0.16, 95% CI 0.0 to 0.32, p=0.05, I 2=53%) and antiarrhythmic drugs (OR=4.70, 95% CI 2.31 to 9.55, p<0.0001, I 2=0%) are more frequently needed in patients with HCM to prevent arrhythmia relapse. Sensitivity analyses suggested that the outcome in patients with HCM with less dilated atria and paroxysmal AF may be more comparable to the general population. Conclusions: The observed complication rate of catheter ablation of AF in patients with HCM was low. Even though the risk of relapse is twofold higher, catheter ablation can be effective in patients with HCM and AF, particularly in patients with paroxysmal AF and smaller atria.
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The overall success rate of ablation of atrial fibrillation in maintaining sinus rhythm without recurrence is lower in patients with hypertrophic cardiomyopathy than those without it (39% v 50% for one procedure), but rates are similar for those with paroxysmal left ventricular and/or a non-dilated left atrium.
“Although the overall success rate of ablation of atrial fibrillation in maintaining sinus rhythm without recurrence is lower in patients with hypertrophic cardiomyopathy than those without it (39% v 50% for one procedure), rates are similar for those with paroxysmal left ventricular and/or a non-dilated left atrium.”
From Current management of hypertrophic cardiomyopathy (2025) · cites this paper as [118]
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Cappato, R., Calkins, H., Chen, S.-A., Davies, W., Iesaka, Y., Kalman, J., Kim, Y.-H., Klein, G., Natale, A., Packer, D., et al. (2010) · Circulation Arrhythmia and Electrophysiology · doi:10.1161/circep.109.859116 · Cited by 2,852
Calkins, H., Kuck, K. H., Cappato, R., Brugada, J., Camm, A. J., Chen, S.-A., Crijns, H. J. G., Damiano, R. J., Davies, D. W., DiMarco, J., et al. (2012) · Heart Rhythm · doi:10.1016/j.hrthm.2011.12.016 · Cited by 1,456
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Ommen, S. R., Ho, C. Y., Asif, I. M., Balaji, S., Burke, M. A., Day, S. M., Dearani, J. A., Epps, K. C., Evanovich, L., Ferrari, V. A., et al. (2024) · Circulation · doi:10.1161/cir.0000000000001250 · Cited by 807
Writing Committee Members, Ommen, S. R., Mital, S., Burke, M. A., Day, S. M., Deswal, A., Elliott, P., Evanovich, L. L., Hung, J., Joglar, J. A., et al. (2020) · Circulation · doi:10.1161/cir.0000000000000938 · Cited by 336
Current management of hypertrophic cardiomyopathy
Sikand, N., Stendahl, J., Sen, S., Lampert, R., & Day, S. (2025) · BMJ · doi:10.1136/bmj-2023-077274 · Cited by 26
Metadata
- Authors
- Providencia, R., Elliott, P., Patel, K., McCready, J., Babu, G., Srinivasan, N., Bronis, K., Papageorgiou, N., Chow, A., Rowland, E., Lowe, M., Segal, O. R., & Lambiase, P. D.
- Venue
- Heart
- Publisher
- BMJ
- Published
- 2016-05-27
- Volume
- 102
- Issue
- 19
- Pages
- 1533-1543
- ISSN
- 1355-6037
- 1468-201X
- Cited by
- 122
- References
- 4
- Language
- en
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