Surgical ablation for treating atrial fibrillation during heart surgery

Surgical Ablation of AF Efficacy Trial

Not applicable Interventional Population Health Research Institute · NCT05434819

This study is testing if a surgical procedure to treat atrial fibrillation during heart surgery can help patients have better heart health and lower their chances of stroke and heart failure compared to standard care.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment2000 (estimated)
Ages18 Years and up
SexAll
SponsorPopulation Health Research Institute Academic / other
Locations1 site (Hamilton, Ontario)
Trial IDNCT05434819 on ClinicalTrials.gov

What this trial studies

The SAFE trial is an international multicenter randomized controlled trial investigating the efficacy of surgical ablation for atrial fibrillation (AF) in patients undergoing cardiac surgery. It aims to determine whether surgical ablation can improve cardiovascular outcomes by maintaining sinus rhythm in patients with paroxysmal or persistent AF. The trial will compare outcomes between patients receiving surgical ablation and those receiving standard care, with a focus on the potential benefits of this intervention in reducing the risk of stroke and heart failure. This landmark trial seeks to provide robust evidence on the impact of surgical AF ablation in the context of cardiac surgery.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older who have a documented history of paroxysmal or persistent atrial fibrillation and are scheduled for clinically indicated cardiac surgery.

Not a fit: Patients with dominant atrial flutter, significant left atrial enlargement, or those undergoing specific cardiac procedures unrelated to AF may not benefit from this study.

Why it matters

Potential benefit: If successful, this trial could significantly improve the management of atrial fibrillation in patients undergoing cardiac surgery, potentially reducing the risk of stroke and heart failure.

How similar studies have performed: Previous studies have shown promising results for catheter-based AF ablation, suggesting that surgical ablation may also yield beneficial outcomes, although this specific approach is less commonly tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years;
* Undergoing a clinically indicated cardiac surgical procedure: CABG, AVR, ascending aorta replacement, or combinations thereof;
* Documented history of paroxysmal or persistent AF
* Provide informed consent

Exclusion Criteria:

* Dominant atrial arrhythmia is atrial flutter;
* Documented left atrial diameter ≥ 6 cm;
* Previous cardiac surgery requiring opening of the pericardium;
* Patients undergoing any of the following procedures:

  1. Heart transplant
  2. Complex congenital heart surgery
  3. Sole indication for surgery is ventricular assist device insertion
  4. Mitral valve repair or replacement
  5. Tricuspid valve repair or replacement
* Patient resides in a long-term care facility

Where this trial is running

Hamilton, Ontario

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Atrial FibrillationHeart FailureSurgical AblationCardiac Surgery
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.