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Atrial fibrillation and the risk of ischaemic strokes or intracranial haemorrhages: comparisons of the catheter ablation, medical therapy, and non-atrial fibrillation population

 Min Kim  ;  Hee Tae Yu  ;  JongYoun Kim  ;  Tae-Hoon Kim  ;  Jae-Sun Uhm  ;  Boyoung Joung  ;  Moon-Hyoung Lee  ;  Hui-Nam Pak 
 EUROPACE, Vol.23(4) : 529-538, 2021-04 
Journal Title
Issue Date
Atrial fibrillation ; Catheter ablation ; Intracranial haemorrhage ; Ischaemic stroke
Aims : Although atrial fibrillation (AF) catheter ablation (AFCA) is an effective rhythm control strategy, there is limited data on whether ischaemic stroke (IS) or intracranial haemorrhage (ICH) decreases after AFCA compared with medical therapy or non-AF population. We explored the IS and ICH risk after AFCA or medical therapy in the AF population and matched non-AF population. Methods and results : We compared 1629 patients with AFCA (Yonsei AF ablation cohort), 3258 with medical therapy [Korean National Health Insurance (NHIS) database], and 3258 non-AF subjects (NHIS database) following a 1:2:2 propensity score matching. All AFCA patients underwent regular rhythm follow-ups for 51 ± 29 months. Among the AFCA group, the incidence rate ratio (IRR) of ISs was significantly higher in patients with sustained AF recurrences after the last ablation (0.87%) than in those remaining in sinus rhythm (0.24%, P = 0.017; log rank P = 0.003). The IRR of ISs was significantly higher in the medical therapy (1.09%) than AFCA (0.30%, P < 0.001, log rank P < 0.001 vs. medical therapy) or non-AF groups (0.34%, P < 0.001, log rank P < 0.001 vs. medical therapy; P = 0.673, log rank P = 0.874 vs. AFCA). The IRR of ICHs was 0.17% in the medical therapy, 0.06% in the AFCA (P = 0.023, log rank P = 0.042 vs. medical therapy), and 0.12% in the non-AF group (P = 0.226, log rank P = 0.241 vs. medical therapy; P = 0.172, log rank P = 0.193 vs. AFCA). Conclusion : Post-procedural AF control influences the risk of ISs. Atrial fibrillation catheter ablation significantly reduces the risk of both ISs and ICHs to the extent of the non-AF population compared to the medical therapy.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jong Youn(김종윤) ORCID logo https://orcid.org/0000-0001-7040-8771
Kim, Tae Hoon(김태훈)
Pak, Hui Nam(박희남) ORCID logo https://orcid.org/0000-0002-3256-3620
Uhm, Jae Sun(엄재선) ORCID logo https://orcid.org/0000-0002-1611-8172
Yu, Hee Tae(유희태) ORCID logo https://orcid.org/0000-0002-6835-4759
Lee, Moon-Hyoung(이문형) ORCID logo https://orcid.org/0000-0002-7268-0741
Joung, Bo Young(정보영) ORCID logo https://orcid.org/0000-0001-9036-7225
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