Trial results comparing rhythm control to rate control strategies for Atrial Fibrillation in patients with heart failure were posted on ClinicalTrials.gov on 2026-05-11. The study found that 50 participants in the rhythm control group experienced the composite outcome of all-cause mortality and heart failure events, compared to 64 participants in the rate control group.
Background
Atrial fibrillation and heart failure are prevalent cardiac conditions that significantly contribute to increased mortality and morbidity. When these two conditions coexist in a patient, the prognosis is often poor, leading to diminished quality of life and frequent hospital admissions. Managing atrial fibrillation in patients with heart failure presents a considerable clinical challenge. Treatment approaches typically involve either allowing atrial fibrillation to persist while controlling the heart rate (rate control) or attempting to restore and maintain a normal sinus rhythm (rhythm control).
Trial design
This completed trial (NCT01420393) enrolled 411 participants to investigate management strategies for patients with Heart Failure and Atrial Fibrillation. The study compared two main approaches: a rhythm control strategy, which included catheter ablation with or without anti-arrhythmic drug control to maintain sinus rhythm, against a rate control strategy, involving medical therapy and/or atrio-ventricular junction ablation with pacemaker treatment.
Key results
The primary outcome measured was a composite of all-cause mortality and heart failure events. The results for this composite outcome were:
- In the Rhythm Control group, 50 participants experienced the composite outcome.
- In the Rate Control group, 64 participants experienced the composite outcome.
What this means
The observed difference in the composite outcome, with fewer events in the rhythm control group (50 participants) compared to the rate control group (64 participants), suggests a potential benefit for rhythm control strategies in patients with atrial fibrillation and heart failure. While these raw numbers indicate a direction, further statistical analysis would be needed to determine the significance of this finding and its broader implications for clinical practice.
Source
The information regarding these trial results was obtained from ClinicalTrials.gov, a public database of clinical studies. The results for study NCT01420393, titled "Rhythm Control - Catheter Ablation With or Without Anti-arrhythmic Drug Control of Maintaining Sinus Rhythm Versus Rate Control With Medical Therapy and/or Atrio-ventricular Junction Ablation and Pacemaker Treatment for Atrial Fibrillation," were posted on 2026-05-11 on clinicaltrials.gov.