Which ablation strategy works best for stubborn AFib?

NCT ID NCT04428944

First seen May 12, 2026 · Last updated May 12, 2026

Summary

This study compares three catheter ablation techniques for people with persistent atrial fibrillation (AFib), a heart rhythm problem lasting 3 months to 3 years. About 617 adults having their first ablation will be randomly assigned to one of three strategies. The goal is to see which method best prevents AFib from returning for at least 18 months.

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Contacts and locations

Locations

  • AZ Sint-Jan

    Ruddershove, Belgium

  • Alfred Health

    Melbourne, Australia

  • Antwerp University Hospital (UZA)

    Edegem, Belgium

  • Brigham & Women'S Hosptial Inc.

    Boston, Massachusetts, 02115, United States

  • Canberra Heart Rhythm Foundation

    Garran, Australian Capital Territory, Australia

  • Clinique du Tonkin

    Villeurbanne, France

  • Dokkyo Medical University Koshigaya Hospital

    Koshigaya, Saitama, Japan

  • Hamilton General Hospital

    Hamilton, Ontario, L8L 2X2, Canada

  • Hospital Clinic Barcelona

    Barcelona, Spain

  • Hospital St-Joseph

    Marseille, France

  • Hôpital Fleurimont, CHUS

    Sherbrooke, Quebec, J1H 5H3, Canada

  • Institut Mutualiste Montsouris

    Paris, 75014, France

  • Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ)

    Québec, Quebec, G1V 4G5, Canada

  • Jikei University School of Med

    Tokyo, Japan

  • Juntendo University Hospital

    Bunkyo City, Tokyo, Japan

  • Laurent Macle

    Montreal, QC - Québec, H1T 1c8, Canada

  • MUHC, McGill University Health Centre

    Montreal, Quebec, H4A 3J1, Canada

  • Medical University of Graz

    Graz, Austria

  • Minamino Cardiovascular Hospital

    Tokyo, Japan

  • National University Corporation Kobe University

    Chūōku, Japan

  • Nihon University School of Medicine

    Tokyo, Japan

  • OLV Hospital Aalst

    Aalst, Belgium

  • Ordensklinikum Linz GmbH

    Linz, Austria

  • Ospedale Generale Regionale F. Miulli

    Acquaviva delle Fonti, Italy

  • Royal Adelaide Hospital and Cardiovascular Centre

    Adelaide, Australia

  • Royal Jubilee Hospital

    Victoria, British Colombia, V8R 1J8, Canada

  • Royal Melbourne Hospital

    Parkville, Australia

  • Southlake Regional Health Center

    Newmarket, Ontario, L3Y 2P9, Canada

  • St. Paul's Hospital, Vancouver, BC

    Vancouver, British Colombia, V6Z 1Y6, Canada

  • University of Calgary Foothills

    Calgary, Alberta, T2N 4N1, Canada

  • University of Ottawa Heart Institute

    Ottawa, Quebec, K1Y 4W7, Canada

  • Vancouver General Hospital

    Vancouver, British Colombia, V5Z 1M9, Canada

Conditions

Explore the condition pages connected to this study.