Clinical trial Recruiting at 1 site Interventional Ages 18 to 80

Optimized posterior wall ablation for persistent atrial fibrillation

Official title: Optimized Ablation of the Posterior Wall in Persistent Atrial Fibrillation

Run by Shanghai Chest Hospital · NCT07122336 · Data updated 2026-11-12

This study tests whether adding posterior wall ablation and electrogram-guided ablation to standard pulmonary vein isolation helps people with persistent atrial fibrillation who are having their first ablation.

Quick facts

Study typeInterventional
Ages18 Years to 80 Years
SexAll
Enrollment384 (estimated)
SponsorShanghai Chest Hospital
Academic / other
Locations1 site (Shanghai)
StatusRecruiting
StartedJuly 16, 2025
Main results expectedDecember 31, 2025
Study endsDecember 31, 2026
Registry record updatedAugust 14, 2025
Trial IDNCT07122336 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) with symptomatic persistent atrial fibrillation lasting 7 days to 3 years, intolerant of at least one antiarrhythmic drug, and undergoing their first ablation are ideal candidates.

Probably not a fit

People with paroxysmal AF, long-standing persistent AF (>3 years), prior left atrial ablation, or contraindications to anticoagulation are unlikely to benefit from this protocol.

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

What this trial studies

This randomized, controlled trial compares three approaches for first-time catheter ablation in persistent atrial fibrillation: pulmonary vein isolation (PVI) alone, PVI plus posterior wall isolation (PWI), and PVI+PWI with additional electrogram-guided (EGM) ablation. Eligible adults have symptomatic persistent AF lasting between 7 days and 3 years and have not had prior ablation. Participants are randomized to one of the three intervention groups and followed for arrhythmia recurrence and safety outcomes. The study will compare rhythm outcomes, need for repeat procedures, and procedural safety across the three arms.

Why it matters

Potential benefit: If successful, the approach could lower AF recurrence rates and reduce the need for repeat ablations, improving symptoms and quality of life.

How similar studies have gone: Previous studies of posterior wall isolation have shown mixed results and electrogram-guided ablation strategies remain experimental with limited consistent evidence.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age ≥18 years
2. First-time ablation for persistent atrial fibrillation (PsAF)
3. Persistent AF definition: Sustained episodes lasting ≥7 days but ≤3 years (including episodes requiring pharmacologic or electrical cardioversion after ≥7 days)
4. Symptomatic AF with intolerance to at least one antiarrhythmic drug (AAD)
5. Documented PsAF episode: At least one recorded PsAF episode within the last 2 years prior to enrollment, confirmed by: ECG,Holter monitorin, Loop recorder, Telemetry, Transtelephonic monitoring (TTM),Implantable device
6. Ability and willingness to provide written informed consent
7. Compliance with all study follow-up requirements

Exclusion Criteria:

1. Paroxysmal AF: Episodes lasting \<7 days (or requiring pharmacologic/electrical cardioversion \<7 days)
2. Long-standing persistent AF: Continuous AF duration \>3 years
3. No prior attempt/pursuit of cardioversion or sinus rhythm maintenance
4. Contraindications to systemic anticoagulation
5. Pregnancy
6. Advanced renal or hepatic failure
7. Severe valvular heart disease or cyanotic congenital heart disease
8. Hypertrophic cardiomyopathy (HCM)

Where it's running

  • Shanghai Chest Hospital
    Shanghai, China
    Recruiting

Study contacts

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.