Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Comparing two methods for treating atrial fibrillation

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

Run by Hospital Clinic of Barcelona · NCT06220006 · Data updated 2026-11-12

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

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment104 (estimated)
SponsorHospital Clinic of Barcelona
Academic / other
Locations1 site (Barcelona, Catalonia)
StatusRecruiting
StartedNovember 1, 2023
Main results expectedNovember 1, 2025
Study endsNovember 1, 2026
Registry record updatedApril 7, 2026
Trial IDNCT06220006 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

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

Probably 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.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

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.

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

Who can join: the full rules

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 it's running

  • Hospital Clinic, University of Barcelona
    Barcelona, Catalonia, Spain
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.