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Thoracoscopic Versus Catheter Ablation in Persistent Atrial Fibrillation With Enlarged Left Atrium

NCT07783984 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 194

Last updated 2026-08-25

No results posted yet for this study

Summary

This is a prospective, single-center, open-label, randomized controlled trial comparing thoracoscopic surgical ablation with percutaneous endocardial catheter ablation as the first rhythm-control procedure in patients with persistent atrial fibrillation and an enlarged left atrium (LA diameter ≥50 mm or LA volume index ≥45 mL/m²).

A total of 194 patients who have never undergone an ablation procedure for atrial fibrillation will be randomly assigned 1:1 to thoracoscopic ablation or percutaneous catheter ablation, stratified by duration of atrial fibrillation. The primary endpoint is recurrence of atrial tachyarrhythmia (atrial fibrillation, atrial flutter, or atrial tachycardia) after a 3-month blanking period. The investigators hypothesize that thoracoscopic ablation will significantly reduce recurrence compared with catheter ablation in this population.

A secondary hypothesis is that 14-day patch monitoring detects recurrent atrial tachyarrhythmia more sensitively than conventional 24-hour Holter monitoring.

Conditions

Interventions

PROCEDURE

Thoracoscopic ablation

Thoracoscopic surgical ablation is performed according to the standard technique. Pulmonary vein isolation and left atrial appendage exclusion are mandatory. Additional lesions are at the operator's discretion.

PROCEDURE

Percutaneous catheter ablation

Percutaneous endocardial catheter ablation is performed using radiofrequency, cryoballoon, or pulsed field energy. Pulmonary vein isolation is mandatory. Additional lesions are at the operator's discretion.

Sponsors & Collaborators

  • Samsung Medical Center

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
19 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-05-01
Primary Completion
2028-05-01
Completion
2029-05-01

Countries

  • South Korea

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07783984 on ClinicalTrials.gov