Plain-English translation of NCT05996159 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
Atrial fibrillation is an irregular heartbeat that can increase your stroke risk. This trial is testing whether doctors can treat it more quickly and effectively using a catheter procedure with very high-power, short-duration radiofrequency energy (90 watts for 4 seconds), either alone or combined with a more traditional approach. The goal is to find the safest and most efficient way to isolate the pulmonary veins in your heart — the source of the irregular signals.
Current treatments for this condition work well but take a long time and may not be equally effective in all parts of the heart. Doctors want to know whether using very high power for very short periods can get better results faster, especially when combined with the traditional method for thicker heart tissue.
You likely qualify if…
You likely don't qualify if…
You will undergo a catheter ablation procedure where doctors use radiofrequency energy to treat your irregular heartbeat. You will be randomly assigned to receive one of three approaches: very high-power energy alone, very high-power energy combined with a traditional approach, or the traditional approach alone. The procedure itself typically takes a few hours, and you will need follow-up visits to monitor your heart rhythm and ensure the treatment worked.
AI-generated summary from trial data · Jun 19, 2026 · Not medical advice
South Korea
Sponsor
Seoul National University Hospital
Enrollment target
~150 participants
Started
November 2023
Primary completion
July 2026
This trial's estimated completion date has passed — the record may not be fully up to date.
Age range
19 Years and older
Last updated on clinicaltrials.gov in May 2026.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
Eue-Keun Choi, M.D. Ph.D.
Seoul National University Hospital
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.