Int J Arrhythm.
2021 Dec;22(4):20. 10.1186/s42444-021-00047-7.
Catheter ablation of atrial fibrillation in Korea: results from the Korean Heart Rhythm Society Ablation Registry for Atrial Fibrillation (KARA)
- Affiliations
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- 1Department of Cardiology, Bucheon Sejong Hospital, Bucheon, Korea
- 2Department of Internal Medicine, Keimyung University Dongsan Medi‑ cal Center, Keimyung University College of Medicine, Daegu, Korea
- 3Heart Institute, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- 4Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
- 5Department of Inter‑ nal Medicine, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea.
- 6Cardiovascular Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
- 7Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea.
- 8Department of Internal Medicine, Heart Vascular and Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
- 9Depart‑ ment of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak‑ro, Jongno‑gu, Seoul 03080, Republic of Korea.
- KMID: 2523664
- DOI: http://doi.org/10.1186/s42444-021-00047-7
Abstract
- Background
This study aims to investigate the current status of AF (atrial fibrillation) catheter ablation in Korea.
Methods
The patients who underwent AF catheter ablation from September 2017 to December 2019 were pro‑ spectively enrolled from 37 arrhythmia centers. Demographic data, procedural characteristics, the extent of catheter ablation, acute success of the ablation lesion set, rate and independent risk factor for recurrence of AF were analyzed.
Results
A total of 2402 AF patients [paroxysmal AF (PAF) 45.7%, persistent AF (PeAF) 43.1% and redo AF 11.2%] were included. Pulmonary vein isolation (PVI) was performed in 2378 patients (99%) and acute success rate was 97.9%. Additional non-PV ablation (NPVA) were performed in 1648 patients (68.6%). Post-procedural complication rate was 2.2%. One-year AF-free survival rate was 78.6% and the PeAF patients showed poorer survival rate than the ones with other types (PeAF 72.4%, PAF 84.2%, redo AF 80.0%). Additional NPVA did not influence the recurrence of AF in the PAF patients (PVI 17.0% vs. NPVA 14.6%, P value 0.302). However, it showed lower AF recurrence rate in the PeAF patients (PVI 34.9% vs. NPVA 24.4%, P value 0.001). Valvular heart disease, left atrial diameter, PeAF, PVI alone, need of NPVA for terminating AF, and failed ablation were independent predictors of AF recurrence.
Conclusions
Additional NPVA was associated better rhythm outcome in the patients with PeAF, not in the ones with PAF. The independent risk factors for AF recurrence in Korean population were similar to previous studies. Further research is needed to discover optimal AF ablation strategy.
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