Clinical trial Recruiting at 6 sites Interventional Ages 18 to 80

Comparing two procedures for treating persistent atrial fibrillation after failed electric cardioversion

Official title: Pulmonary Vein Isolation Alone or in Combination With Substrate Modulation After Electric Cardioversion Failure in Patients With Persistent Atrial Fibrillation: a Randomized, Multicentric, and Comparative Study

Run by Elsan · NCT05264831 · Data updated 2026-11-12

This study is testing which of two procedures works better for patients with persistent atrial fibrillation who haven't had success with electric cardioversion.

Quick facts

Study typeInterventional
Ages18 Years to 80 Years
SexAll
Enrollment450 (estimated)
SponsorElsan
Academic / other
Locations13 sites (Caluire-et-Cuire and 12 other locations)
StatusRecruiting
StartedFebruary 20, 2023
Main results expectedApril 1, 2025
Study endsOctober 1, 2027
Registry record updatedApril 24, 2024
Trial IDNCT05264831 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 to 80 with persistent atrial fibrillation that is symptomatic and resistant to at least one anti-arrhythmic drug.

Probably not a fit

Patients who do not have persistent atrial fibrillation or those with a life expectancy of less than 5 years 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 study evaluates the effectiveness of two different approaches for patients with persistent atrial fibrillation who do not respond to electric cardioversion. After undergoing electric cardioversion, patients who fail this treatment will be randomized to receive either pulmonary vein isolation alone or pulmonary vein isolation combined with substrate modulation. The goal is to determine which approach yields better outcomes for patients with this common heart rhythm disorder. The study aims to improve treatment strategies and patient care for those suffering from persistent atrial fibrillation.

Why it matters

Potential benefit: If successful, this study could lead to improved treatment options and outcomes for patients with persistent atrial fibrillation.

How similar studies have gone: Previous studies have shown that combining pulmonary vein isolation with substrate modulation can improve outcomes for patients with persistent atrial fibrillation, suggesting this approach has potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria:

Criteria to be validated for patients included before performing electric cardioversion:

1\) Persistent AF (continuous for at least 7 days without interruption according to information transmitted by the cardiologist and the patient), symptomatic and resistant to at leat one anti-arrhythmic drug treatment including amiodarone;

Criteria to be validated for patients included after performing electric cardioversion :

1. Patient treated by electric cardioversion for persistent AF, symptomatic and resistant to anti-arrhythmic treatment including amiodarone and whom ablative procedure is planned in the following 4-6 weeks after electric cardioversion

   Criteria to be validated for all patients included:
2. Life expectancy \> 5 years;
3. Female or male between 18 and 80 years of age at the electric cardioversion time
4. Affiliation to a health insurance system;
5. Patient informed of the study and having signed informed consent

   Criteria to be validated prior to randomization on the day of ablation (these patients may be randomized):
6. Patient with failed electric cardioversion i.e. in AF, confirmed by ECG.

Exclusion criteria:

Criteria to be validated before or after performing electric cardioversion (the study cannot be proposed to patients corresponding to these criteria):

1. Current hyperthyroidism;
2. Pregnant or breastfeeding woman;
3. Patient with a Body Mass Index (BMI) greater than 35;
4. Patient with severe Chronic Obstructive Pulmonary Disease (COPD);
5. Patient with hypertrophic heart disease;
6. Patient with a mechanical or biological mitral valve;
7. Contraindications to anticoagulants;
8. Transient Ischemic Attack (TIA) /stroke less than 6 months old;
9. Psychiatric illness affecting follow-up;
10. Left Ventricular Ejection Fraction (LVEF) \< 40% ;
11. Uncontrolled ischaemic heart disease (angina, myocardial ischaemia)
12. Patients under legal protection
13. Cardiac surgery on left atrium
14. Inflammatory status in progress (cancer, rheumatoid arthritis, PPRZ, acute or chronic periodontitis, Crohn's disease, RCUH)
15. Pulmonary embolism or phlebitis less than 6 months old
16. Prior atrial fibrillation ablation
17. Active cancer

    Criteria to be validated before randomization, on the day of ablation (these patients cannot be randomized):
18. Patient in sinus rhythm 4-6 weeks after electric cardioversion: these patients are included in the study registry.
19. Patient with complete absence of sinus rhythm (less than 10 seconds) after 3 electric cardioversion attempts: these patients will discontinue from the study.

Where it's running

  • Infirmerie Protestante
    Caluire-et-Cuire, France
    Recruiting
  • Hôpital Privé Les Franciscaines
    Nîmes, France
    Recruiting
  • Hôpital Européen Georges Pompidou Service de cardiologie - Unité rythmologie
    Paris, France
    Recruiting
  • Clinique St Pierre Cardiologie
    Perpignan, France
    Recruiting
  • CHU Rennes
    Rennes, France
    Recruiting
  • Clinique Pasteur Service de cardiologie/rythmologie
    Toulouse, France
    Recruiting
Show 7 more locations
  • CH Libourne
    Libourne, France
    Not yet recruiting
  • CHU Lille
    Lille, France
    Active not recruiting
  • Hopital ST Phillbert
    Lomme, France
    Not yet recruiting
  • CMC Ambroise Paré Hartmann
    Neuilly-sur-Seine, France
    Not yet recruiting
  • Ccn
    Saint-Denis, France
    Not yet recruiting
  • Clinique Rhéna
    Strasbourg, France
    Not yet recruiting
  • Chu Nancy
    Vandœuvre-lès-Nancy, France
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.