Combining pulmonary vein isolation and left atrial appendage closure for atrial fibrillation treatment

COnCOmitaNt Pulse Field Ablation Based pUlmonary Vein Isolation and lefT Atrial Appendage Closure - The COCONUT Study

Observational Asklepios proresearch · NCT06861673

This study is testing if combining two procedures—one to isolate the pulmonary veins and another to close off a part of the heart—can help people with non-valvular atrial fibrillation who can't take blood thinners and are at high risk for stroke.

Quick facts

Study typeObservational
Enrollment60 (estimated)
SexAll
SponsorAsklepios proresearch Industry-sponsored
Locations1 site (Hamburg, Free and Hanseatic City of Hamburg)
Trial IDNCT06861673 on ClinicalTrials.gov

What this trial studies

This observational study focuses on patients with non-valvular atrial fibrillation (AF) who are at high risk for stroke and cannot use long-term oral anticoagulation. It evaluates the safety, efficacy, and efficiency of a combined approach using pulsed field ablation (PFA) for pulmonary vein isolation (PVI) and left atrial appendage closure (LAAC) in a multicenter registry. The study aims to determine if this concomitant procedure can provide benefits over traditional methods, particularly in terms of reduced procedure times and enhanced safety profiles. The Farapulse PFA system is utilized, which has shown promising results in previous registries.

Who should consider this trial

Good fit: Ideal candidates are patients with non-valvular atrial fibrillation at high risk for stroke who are ineligible for long-term oral anticoagulation.

Not a fit: Patients who are not eligible for either pulmonary vein isolation or left atrial appendage closure will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could offer a safer and more efficient treatment option for patients with atrial fibrillation who are at high stroke risk.

How similar studies have performed: Previous studies have shown success with similar combined approaches, indicating potential for this novel method.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Indicatio for PVI and LAAC

Exclusion Criteria:

Not eligible for any of the procedures PVI and LAAC

Where this trial is running

Hamburg, Free and Hanseatic City of Hamburg

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 Fibrillation
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.