Clinical trial Recruiting at 1 site Interventional Ages 20 and up

Intensive lifestyle changes after AF ablation in people who are overweight

Official title: Outcome Improvement in Obese Patients With Atrial Fibrillation After Catheter Ablation: Importance of Gut Microbiota Dysbiosis and Adipose Tissue Biology

Run by National Taiwan University Hospital · NCT07618741 · Data updated 2026-11-12

The study tests whether an intensive diet and exercise program after AF ablation helps overweight patients do better than standard follow-up care.

Quick facts

Study typeInterventional
Ages20 Years and up
SexAll
Enrollment520 (estimated)
SponsorNational Taiwan University Hospital
Academic / other
Locations1 site (Taipei)
StatusRecruiting
StartedSeptember 16, 2021
Main results expectedMay 2030
Study endsMay 2030
Registry record updatedJune 1, 2026
Trial IDNCT07618741 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with paroxysmal or persistent AF scheduled for catheter ablation at National Taiwan University Hospital and who meet local eligibility criteria.

Probably not a fit

Patients with unwillingness or inability to participate in follow-up visits or adhere to the lifestyle program may not benefit.

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

What this trial studies

This randomized trial enrolls adults with paroxysmal or persistent atrial fibrillation scheduled for catheter ablation at National Taiwan University Hospital. All participants receive standard ablation and guideline-based AF care, then are randomized to either an intensive lifestyle modification program or usual care. The intervention includes dietary counseling for weight loss and a supervised aerobic plus resistance training program, with home-based activity recommendations. Data collected will include clinical and procedural information, rhythm follow-up, biological samples, and imaging metrics to explore links between lifestyle changes, adipose biology, gut microbiota, and post-ablation outcomes. The study aims to determine whether lifestyle modification improves outcomes in obese AF patients undergoing ablation.

Why it matters

Potential benefit: If successful, patients may achieve better rhythm control and overall health after ablation through weight loss and improved fitness.

How similar studies have gone: Prior work suggests lifestyle and weight management can influence AF outcomes, but randomized data in this specific post-ablation obese population are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with Class I indication of catheter ablation of paroxysmal or persistent AF and will undergo catheter ablation at National Taiwan University Hospital.

Exclusion Criteria:

1. Informed consent could not be obtained due to personal problem
2. Unwillingness or inability to return for follow-up visits or reason to believe that adherence to follow-up visits wound be irregular
3. Current or scheduled enrollment in other conflicting studies, and
4. Concomitant disease or other medical condition likely to result in death within 6 months

Where it's running

  • National Taiwan University Hospital
    Taipei, Taiwan
    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.