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- Title
Catheter ablation of atrial fibrillation in situs inversus dextrocardia: Challenge, improved procedure, outcomes, and literature review.
- Authors
Zhao, Xin; Su, Xin; Long, De‐Yong; Sang, Cai‐Hua; Bai, Rong; Tang, Ri‐Bo; Liu, Nian; Jiang, Chen‐Xi; Li, Song‐Nan; Guo, Xue‐Yuan; Wang, Wei; Xin, Du; Dong, Jian‐Zeng; Yu, Rong‐Hui; Ma, Chang‐Sheng
- Abstract
Introduction: Catheter ablation for atrial fibrillation (AF‐CA) in patients with situs inversus dextrocardia (SID) can be challenging because of the contrary anatomy and associated anomalies. Cases and literature regarding AF‐CA in SID are rare and provide little information. Our study aims to present an improved procedure, ablation strategies, and evaluate the safety and outcomes of AF‐CA in patients with AF and SID. Methods: A total of 10 patients with AF‐SID (mean age, 60.4 ± 15.7 years; six paroxysmal AF, four persistent atrial fibrillation [PeAF]) were enrolled. For the improved procedure, images obtained by preacquired computed tomography and three‐dimensional electroanatomical mapping, integrating intracardiac echocardiography, and x‐ray imaging data are necessary to optimize the transseptal puncture and ablation procedure. Results: All patients successfully underwent 13 AF‐CA procedures without complications, including three patients received repeat procedures. However, two PeAF patients presented sick sinus syndrome (SSS) after the AF‐CA procedure, and one underwent permanent pacemaker implantation therapy during hospitalization. During the follow‐up period (6‐72 months), the outcomes were not favorable: three patients (30%) maintained sinus rhythm (SR) after the initial procedure; after repeated procedures, the overall SR rate was 40% (four patients). Conclusion: With the improved strategy, AF‐CA can be safely and effectively performed with low radiation exposure in patients with SID. However, the long‐term outcomes were not favorable, even when managed at a tertiary center by a team of specialists. Moreover, patients with PeAF might also have masked SSS, which should be carefully considered.
- Subjects
ATRIAL fibrillation; CATHETER ablation; HEART abnormalities; PATIENT safety; TREATMENT effectiveness; SITUS inversus; DATA analysis software; DESCRIPTIVE statistics; KAPLAN-Meier estimator
- Publication
Pacing & Clinical Electrophysiology, 2021, Vol 44, Issue 2, p293
- ISSN
0147-8389
- Publication type
Article
- DOI
10.1111/pace.14144