Elsevier

Journal of Cardiology

Volume 72, Issue 3, September 2018, Pages 240-246
Journal of Cardiology

Original article
Impact of catheter ablation of atrial fibrillation on long-term clinical outcomes in patients with heart failure

https://doi.org/10.1016/j.jjcc.2018.02.012Get rights and content
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Highlights

  • Freedom from composite endpoint at 3-years was high in HFrEF and HFpEF patients.

  • Smaller LV diastolic diameter was the sole predictor of LVEF normalization.

  • No recurrence after initial procedure was the sole predictor of shortening of the LV diastolic diameter.

Abstract

Background

Heart failure (HF) promotes atrial fibrillation (AF) and AF worsens HF. This study aimed to investigate the long-term clinical outcomes after AF ablation in patients with HF.

Methods and results

A total of 106 consecutive HF patients, including 51 (48.1%) with a reduced left ventricular ejection fraction (LVEF) (HFrEF) and 55 (51.9%) with a preserved LVEF (HFpEF), underwent AF ablation. All patients underwent successful pulmonary vein antrum isolation, and substrate modification was added in 38 (35.8%). The mean follow-up period was 32.4 ± 18.6 months, and mean number of procedures was 1.4 ± 0.5 per patient. Low-dose antiarrhythmic drugs were combined in 29 (27.3%) patients. Freedom from recurrent atrial arrhythmias (ATa), HF-related hospitalizations, and the composite endpoint (all-cause death, stroke, HF-related hospitalizations) at 3 years was 88.7%, 97.6%, and 97.6% in HFrEF patients, and 79.3%, 96.2%, and 91.8% in HFpEF patients, respectively. LVEF normalization (≥50%) was observed in 37 (72.5%) HFrEF patients post-ablation, and a smaller LV diastolic diameter (LVDd) was the sole predictor [odds ratio (OR) = 0.863; 95% confidence interval (CI) = 0.779–0.955, p = 0.005]. Shortening of the LVDd (≥5 mm) was observed in 16 (29.1%) HFpEF patients post-ablation, and no recurrence after the initial procedure was the sole predictor (OR = 6.229; 95% CI = 1.524–25.469, p = 0.011).

Conclusions

Catheter ablation of AF could be one of the important therapeutic options in the management of patients with HF combined with AF regardless of the type of HF.

Keywords

Arrhythmia-induced cardiomyopathy
Heart failure
Atrial fibrillation
Catheter ablation
Reverse remodeling

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