Which ablation works best for AFib that returns? small study compares two techniques

NCT ID NCT03811795

Completed Disease control Sponsor: Valley Health System Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 9 people with atrial fibrillation (AFib) that came back after an initial cryoballoon ablation. It compared two repeat ablation methods: another cryoballoon procedure versus radiofrequency ablation guided by a high-fidelity mapping system (Rhythmia). Participants used a smartphone-based ECG monitor to track their heart rhythm daily for 6 months. The goal was to see which method better prevents AFib from returning.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: cryoballoon ablation and radiofrequency ablation guided by high-fidelity mapping (Rhythmia)
What this could lead to: If this trial succeeds, it could help doctors choose the best repeat ablation method for people with atrial fibrillation that comes back after a first cryoballoon procedure.
What could go wrong: This is a very small, completed study with only 9 participants, so results may not apply to everyone. It does not test a new drug or device, just compares existing techniques.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for ATRIAL FIBRILLATION are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ATRIAL FIBRILLATION

Contacts and locations

Locations

Iowa Heart Center

West Des Moines, Iowa, 50266, United States
Peace Health

Springfield, Oregon, 97477, United States
The Valley Hospital

Paramus, New Jersey, 07652, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.