Comparing two methods for treating atrial fibrillation

Lesion Formation With Pulsed Field Versus Cryobaloon Ablation as Assessed by Cardiac Magnetic Resoncance

Not applicable Interventional Hospital Clinic of Barcelona · NCT06220006

This study is testing whether pulsed field ablation or cryoballoon ablation is a better way to treat atrial fibrillation in patients having this procedure for the first time.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment104 (estimated)
Ages18 Years and up
SexAll
SponsorHospital Clinic of Barcelona Academic / other
Locations1 site (Barcelona, Catalonia)
Trial IDNCT06220006 on ClinicalTrials.gov

What this trial studies

This randomized study compares pulsed field ablation and cryoballoon ablation in patients undergoing first-time atrial fibrillation catheter ablation. The focus is on assessing the quality of ablation lesions using late gadolinium enhancement cardiac magnetic resonance imaging three months post-ablation. Patients will be assigned in a 2:1 ratio to receive either pulsed field ablation or cryoballoon ablation for pulmonary vein isolation. The study aims to evaluate the efficacy and safety of these two ablation techniques.

Who should consider this trial

Good fit: Ideal candidates are patients scheduled for their first atrial fibrillation catheter ablation.

Not a fit: Patients with long-standing persistent atrial fibrillation or those who have had prior left atrial ablation may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved outcomes and reduced complications for patients undergoing atrial fibrillation ablation.

How similar studies have performed: Previous studies have shown promising results for pulsed field ablation, indicating potential benefits over traditional methods.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients scheduled for first-time atrial fibrillation catheter ablation

Exclusion Criteria:

* age \<18 years
* long-standing persistent atrial fibrillation
* prior left atrial ablation
* pregnancy or lactation
* reduced left ventricular ejection fraction
* GFR \<30%
* BMI \>35%
* left atrial diameter \>55 mm
* cardiac implantable electronic device

Where this trial is running

Barcelona, Catalonia

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 FibrillationAtrial fibrillationCatheter ablationAblation lesionPulmonary vein isolationPulsed field ablationCryoballoon ablationCardiac magnetic resonance
Last reviewed 2026-06-15 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.