Freeze or pills? new study battles persistent AF
NCT ID NCT03716934
First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This study compared two treatments for persistent atrial fibrillation (an irregular heartbeat): cryoablation (freezing tiny areas of heart tissue) and antiarrhythmic drugs. 196 patients were randomly assigned to one treatment and monitored for over a year. The goal was to see which approach better prevents heart rhythm problems and major complications like stroke or heart attack.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- cryoablation (freezing heart tissue) or antiarrhythmic drugs
- What this could lead to
- If cryoablation proves safer or more effective than drugs, it could become a preferred treatment for persistent atrial fibrillation, reducing symptoms and complications.
- What could go wrong
- This is a completed Phase 4 trial with 196 patients, so results are limited. Cryoablation carries risks like stroke, heart damage, or need for a pacemaker, and may not work for everyone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Fundacion para Investigación Biomedica Hospital Clinico San Carlos
Madrid, Madrid, 28040, Spain
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Other studies related to the condition(s) this trial covers.
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