Volume 10, Issue 1 pp. 177-188
Original Article
Open Access

Clinical outcomes and structural remodelling after ablation of atrial fibrillation in heart failure with mildly reduced or mid-range ejection fraction

Dan-Ying Lee

Dan-Ying Lee

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Ting-Yung Chang

Corresponding Author

Ting-Yung Chang

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

National Taipei University of Nursing and Health Sciences, Taipei, Taiwan

Correspondence to: Ting-Yung Chang and Shih-Ling Chang, Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, No. 201, Section 2, Shipai Road, Beitou District, Taipei 112, Taiwan. Tel: 886-2-2875-7156; +886-2-7735-3832; Fax: 886-2-2873-5656 and +886-2-2872-4082. Email: [email protected]; [email protected]

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Shih-Lin Chang

Corresponding Author

Shih-Lin Chang

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

Correspondence to: Ting-Yung Chang and Shih-Ling Chang, Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, No. 201, Section 2, Shipai Road, Beitou District, Taipei 112, Taiwan. Tel: 886-2-2875-7156; +886-2-7735-3832; Fax: 886-2-2873-5656 and +886-2-2872-4082. Email: [email protected]; [email protected]

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Yenn-Jiang Lin

Yenn-Jiang Lin

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Li-Wei Lo

Li-Wei Lo

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Yu-Feng Hu

Yu-Feng Hu

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Fa-Po Chung

Fa-Po Chung

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Ta-Chuan Tuan

Ta-Chuan Tuan

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Tze-Fan Chao

Tze-Fan Chao

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Jo-Nan Liao

Jo-Nan Liao

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Chin-Yu Lin

Chin-Yu Lin

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Ling Kuo

Ling Kuo

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Chih-Min Liu

Chih-Min Liu

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

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Shih-Ann Chen

Shih-Ann Chen

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan

Division of Cardiology, Taipei Veterans General Hospital, Taipei, Taiwan

Institute of Clinical Medicine, and Cardiovascular Research Institute, National Yang Ming Chiao Tung University, Taipei, Taiwan

Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan

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First published: 30 September 2022
Citations: 6

Abstract

Aims

The efficacy of catheter ablation (CA) on clinical outcomes and cardiac structural remodelling in atrial fibrillation (AF) patients with HF with mildly reduced or mid-range ejection fraction (HFmrEF) remains unclear. We aimed to compare the efficacy of CA with medical therapy (MT) in AF patients with HFmrEF.

Methods and results

We retrospectively screened a total of 36 879 patients with AF between 2005 and 2020. Patients who were initially diagnosed with echocardiography-proved HFmrEF and had follow-up echocardiography were enrolled. After applying propensity score matching in a 1:1 ratio, 72 patients treated by CA (Group 1) and 72 patients receiving MT (Group 2) were taken into further analysis. The co-morbidities were similar between the two groups, except for hyperlipidaemia. After a mean follow-up duration of 58.9 ± 42.6 months, Group 1 had a lower HF hospitalization and all-cause mortality compared with Group 2 (hazard ratio (HR), 0.089 [95% confidence interval (CI), 0.011–0.747]; P = 0.026 and HR, 0.121 [95% CI, 0.016–0.894]; P = 0.038, respectively). As for cardiac structural remodelling, the Group 1 had a better improvement in left ventricular ejection fraction (LVEF) and a more decreased left atrium (LA) diameter than Group 2 (+25.0% ± 18.0% vs. +6.2% ± 21.6%, P = <0.0001 and −1.6 ± 4.7 mm vs. +1.5 ± 8.2 mm, P = 0.008, respectively).

Conclusions

In patients with HFmrEF and AF, CA of AF could reduce both HF hospitalization and all-cause mortality as compared with those with MT. A significant improvement in LVEF and decrease in LA diameter were also observed in the CA group. Early rhythm control with CA should be taken into consideration in patients with HFmrEF and AF.

Conflicts of interest

None declared.

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