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New electric pulse method tested for stubborn heart rhythm disorder

NCT ID NCT06134752

Disease control Sponsor: University Medical Centre Ljubljana Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

Summary

This study compares two types of ablation—pulse field and radiofrequency—for treating persistent atrial fibrillation, a common heart rhythm problem. Fifty participants will receive one of the two procedures to isolate faulty electrical areas in the heart. The goal is to see which method creates longer-lasting isolation and better controls abnormal heart rhythms over a year.

What this could mean

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

Active substance
Pulse field ablation and radiofrequency ablation
What this could lead to
If pulse field ablation proves more durable, it could offer a more effective, safer option for controlling persistent atrial fibrillation.
What could go wrong
This is a small, early-stage comparison (50 participants) with no phase designation, so results may not be conclusive or widely applicable. Both procedures carry risks like bleeding or heart tissue damage.

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

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2023

Expected to finish

May 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * atrial fibrillation recorded with 12-lead ECG, holter ECG or implantable device on two occasions at least one week apart Exclusion Criteria: * history of previous catheter ablation, history of previous heart surgery, life expectancy less than one year, any lifethreatening severe acute condition, acute deep venous thrombosis, presence of intracardiac masses or thrombi.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation persistent atrial fibrillation

As listed by the trial registrant

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

Longstanding persistent atrial fibrillation Persistent atrial fibrillation

Contacts and locations

Locations

  • Cardiovascular Surgery Department, University Medical Centre Ljubljana

    Ljubljana, 1000, Slovenia

More trials for these conditions

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