Withdrawal of heart failure therapy after atrial fibrillation rhythm control with ejection fraction normalization: the WITHDRAW-AF trial
No Preview Available
Citations
Altmetric:
Altmetric::
Authors
Editor
Date
2026-01-07
Source Title
European Heart Journal
Publisher
Oxford University Press (OUP)
Melbourne Authors
Affiliation
Melbourne Medical School
Document Type
Journal Article
Subject Code
Citations
Segan, L., Kistler, P. M., Nanayakkara, S., Taylor, A., Hare, J., Costello, B., Chieng, D., Crowley, R., William, J., Sugumar, H., Cho, K., Voskoboinik, A., Ling, L. H., Nderitu, Z., Azzopardi, S., Curtin, A., Premaratne, M., McLellan, A. J., Mariani, J. ,... Prabhu, S. (2026). Withdrawal of heart failure therapy after atrial fibrillation rhythm control with ejection fraction normalization: the WITHDRAW-AF trial. European Heart Journal, 47 (2), pp.250-262. https://doi.org/10.1093/eurheartj/ehaf563.
Access Status
Access this item via the Open Access location
Access URL
Open Access URL
Open Access at PMC
Linked Resource URL
NHMRC Grant Code
ARC Grant Code
Description
Abstract
BACKGROUND AND AIMS: Atrial fibrillation-mediated cardiomyopathy (AFCM) represents an important reversible cause of left ventricular systolic dysfunction. Current clinical practice is indefinite heart failure (HF) pharmacotherapy despite left ventricular ejection fraction (LVEF) normalization. However, whether this is necessary to maintain normal LVEF, in addition to rhythm control, is uncertain. METHODS: This multi-centre, randomized trial conducted between 2021 and 2024 examined the impact of staged withdrawal of HF therapy following AF rhythm control and LVEF normalization in AFCM. Participants were randomized (1:1) to early withdrawal (Group A) or continued therapy for 6 months followed by delayed withdrawal (Group B), in a crossover design. The primary endpoint was the randomized comparison of cardiac magnetic resonance (CMR) LVEF maintenance ≥50% at 6 months, during which time Group A had withdrawn therapy and Group B remained on treatment. Secondary outcomes included cardiac remodelling, functional status, biomarkers, quality of life, and arrhythmia recurrence on vs off HF therapy. The total follow-up duration was 12 months. RESULTS: Between July 2021 and May 2024, 60 patients were enrolled (age 60 [55-65] years, previous persistent AF <1 year and maintaining sinus rhythm for minimum 6 months following AF rhythm control [catheter ablation in 97%]). All participants completed treatment withdrawal and 12-month follow-up. In the initial randomized comparison, LVEF was maintained ≥50% at 6 months in 90% of participants undergoing HF therapy withdrawal (Group A), compared with 100% who continued medical therapy (Group B) (odds ratio [OR] 1.18, 95% confidence interval [CI] 0.27-2.82, P = .47). CMR LVEF was similar between randomization groups at the end of the randomization phase (Group A: LVEF 58% [95% CI 54-60] vs Group B: LVEF 59% [95% CI 55-64], P = .236) and across study time points (mixed effects P = .37). Transthoracic echocardiography characteristics, N-terminal pro-B-type natriuretic peptide, functional status, quality of life and AF burden were similar on vs off HF therapy in the overall population. CONCLUSIONS: Withdrawal of HF therapy following AF rhythm control for prior AFCM and recovered LVEF was not associated with a decline in LVEF for most patients in the following 6 months.