Left atrial appendage electrical isolation in the treatment of patients with atrial fibrillation: a literature review
https://doi.org/10.15829/1560-4071-2025-6651
EDN: XCROEB
Abstract
Catheter-based pulmonary vein isolation is the treatment of choice for patients with symptomatic atrial fibrillation (AF). Despite technological advances, the treatment efficacy, according to various sources, does not exceed 60-80%. In the vast majority of cases, this is due to nonpulmonary sources of arrhythmia. One of the most underestimated structures for the initiation and maintenance of AF is the left atrial appendage (LAA). This literature review provides a current understanding of LAA isolation methods, their effectiveness, and potential complications. It also addresses the issue of potential thromboembolic events after LAA isolation, which is the most common and significant limitation to the widespread use of procedure.
About the Authors
A. A. BrutyanRussian Federation
Petroverigsky Lane, 10, bld. 3, Moscow, 101990
K. V. Davtyan
Russian Federation
Petroverigsky Lane, 10, bld. 3, Moscow, 101990
I. A. Chugunov
Russian Federation
Petroverigsky Lane, 10, bld. 3, Moscow, 101990
G. Yu. Simonyan
Russian Federation
Petroverigsky Lane, 10, bld. 3, Moscow, 101990
References
1. Van Gelder IC, Kotecha D, Rienstra M, et al. 2024 ESC Guidelines for the management of atrial fibrillation developed in collaboration with the European Association for CardioThoracic Surgery (EACTS). Eur Heart J. 2024;45(36):3314-414.
2. Parameswaran R, Al-Kaisey AM, Kalman JM. Catheter ablation for atrial fibrillation: current indications and evolving technologies. Nat Rev Cardiol. 2021;18(3):210-25. doi:10.1038/s41569-020-00451-x.
3. Haïssaguerre M, Jaïs P, Shah DC, et al. Spontaneous Initiation of Atrial Fibrillation by Ectopic Beats Originating in the Pulmonary Veins. New England Journal of Medicine. 1998;339(10):659-66.
4. Theis C, Kaiser B, Kaesemann P, et al. Pulmonary vein isolation using cryoballoon ablation versus RF ablation using ablation index following the CLOSE protocol: A prospective randomized trial. J Cardiovasc Electrophysiol. 2022;33(5):866-73.
5. Di Biase L, Lakkireddy DJ, Marazzato J, et al. ACC Electrophysiology and Interventional Councils. Antithrombotic Therapy for Patients Undergoing Cardiac Electrophysiological and Interventional Procedures: JACC State-of-the-Art Review. J Am Coll Cardiol. 2024;83(1):82-108. doi:10.1016/j.jacc.2023.09.831.
6. Kuck KH, Brugada J, Schlüter M, et al.; FIRE AND ICE Trial Investigators. The FIRE AND ICE Trial: What We Know, What We Can Still Learn, and What We Need to Address in the Future. J Am Heart Assoc. 2018;7(24):e010777. doi:10.1161/JAHA.118.010777.
7. Heeger CH, Wissner E, Knöll M, et al. Three-Year Clinical Outcome After 2ndGeneration Cryoballoon-Based Pulmonary Vein Isolation for the Treatment of Paroxysmal and Persistent Atrial Fibrillation — A 2 — Center Experience. Circulation Journal. 2017;81(7):974-80.
8. Wazni OM, Dandamudi G, Sood N, et al. Cryoballoon Ablation as Initial Therapy for Atrial Fibrillation. New England Journal of Medicine. 2021;384(4):316-24.
9. Di Biase L, Burkhardt JD, Mohanty P, et al. Left atrial appendage: An underrecognized trigger site of atrial fibrillation. Circulation. 2010;122(2):109-18.
10. Aryana A, Baker JH, Espinosa Ginic MA, et al. Posterior wall isolation using the cryoballoon in conjunction with pulmonary vein ablation is superior to pulmonary vein isolation alone in patients with persistent atrial fibrillation: A multicenter experience. Heart Rhythm. 2018;15(8):1121-9.
11. Aryana A, Lafortune P, Di Biase L, Natale A. Cryoballoon Ablation of the Pulmonary Veins, the Posterior Wall, the Left Atrial Appendage, and the Mitral Isthmus Guided by Intracardiac Echocardiography-integrated and Three-dimensional Mapping. Journal of Innovations in Cardiac Rhythm Management. 2022;13(1):4863-8.
12. Tohoku S, Chen S, Bordignon S, et al. Hot or cold? Feasibility, safety, and outcome after radiofrequency-guided versus cryoballoon-guided left atrial appendage isolation. J Arrhythm. 2022;38(3):316-26.
13. Chen S, Schmidt B, Bordignon S, et al. Durable cryoballoon-based left atrial appendage isolation: Catheter maneuver, occlusion grade, contact force, and time to isolation. J Cardiovasc Electrophysiol. 2019;30(8):1278-9. doi:10.1111/jce.13895.
14. Yorgun H, Sener YZ, Tanese N, et al. Long-term outcomes of left atrial appendage isolation using cryoballoon in persistent atrial fibrillation. Europace. 2023;25(2):366-73.
15. Romero J, Gabr M, Patel K, et al. Efficacy and safety of left atrial appendage electrical isolation during catheter ablation of atrial fibrillation: An updated meta-analysis. Europace. 2021;23(2):226-37. doi:10.1093/europace/euaa266.
16. Canpolat U, Yorgun H, Aytemir K. Tips and tricks of durable cryoballoon based left atrial appendage isolation. J Cardiovasc Electrophysiol. 2019;30(8):1280. doi:10.1111/jce.13897.
17. Romero J, Di Biase L. Left atrial appendage electrical isolation for persistent atrial fibrillation: Radiofrequency vs cryoballoon ablation. Pacing Clin Electrophysiol. 2019;42(6):655- 7. doi:10.1111/pace.13689.
18. Fink T, Ouyang F, Heeger CH, et al. Management of thrombus formation after electrical isolation of the left atrial appendage in patients with atrial fibrillation. Europace. 2020;22(9):1358-66.
19. Di Biase L, Mohanty S, Trivedi C, et al. Stroke Risk in Patients With Atrial Fibrillation Undergoing Electrical Isolation of the Left Atrial Appendage. J Am Coll Cardiol. 2019;74(8): 1019-28.
20. Kim YG, Shim J, Oh SK, et al. Electrical isolation of the left atrial appendage increases the risk of ischemic stroke and transient ischemic attack regardless of post isolation flow velocity. Heart Rhythm. 2018;15(12):1746-53.
21. Panikker S, Jarman JWE, Virmani R, et al. Left atrial appendage electrical isolation and concomitant device occlusion to treat persistent atrial fibrillation. Circ Arrhythm Electrophysiol. 2016;9(7):e003710. doi:10.1161/CIRCEP.115.003710.
22. Zender N, Weise FK, Bordignon S, et al. Thromboembolism after electrical isolation of the left atrial appendage: A new indication for interventional closure? Europace. 2019;21(10):1502-8.
- Left atrial appendage electrical isolation is a safe adjunct to standard pulmonary vein isolation in patients with persistent atrial fibrillation.
- Patients after successful left atrial appendage electrical isolation require continuous anticoagulation or implantation of an occlusion device.
Review
For citations:
Brutyan A.A., Davtyan K.V., Chugunov I.A., Simonyan G.Yu. Left atrial appendage electrical isolation in the treatment of patients with atrial fibrillation: a literature review. Russian Journal of Cardiology. 2025;30(4S):6651. (In Russ.) https://doi.org/10.15829/1560-4071-2025-6651. EDN: XCROEB
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