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Ablation without X-Rays: a new way to fix irregular heartbeats?

NCT ID NCT07762742

Disease control Sponsor: China National Center for Cardiovascular Diseases 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 13, 2026 · Last updated Aug 14, 2026 · Updated 1 time

Summary

This trial tests whether a heart procedure called pulsed field ablation can be guided using only ultrasound, avoiding the use of X-rays (fluoroscopy), in people with paroxysmal atrial fibrillation. The study compares the success of completely isolating the pulmonary veins—a key step in the procedure—between ultrasound-only and standard fluoroscopy guidance. If ultrasound works just as well, it could reduce radiation exposure for patients.

What this could mean

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

Active substance
Percutaneous pulsed field ablation (PFA) procedure
What this could lead to
If ultrasound-only guidance works as well as fluoroscopy, it could make PFA safer by eliminating radiation exposure during the procedure.
What could go wrong
This is an early-stage comparison, and ultrasound guidance may not be as effective or safe in all patients. The trial is non-inferiority, so it only aims to show it's not worse, not better.

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 276 people

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

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Feb 2029

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

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

Ages

18 to 75 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: * Adult patients aged 18 to 75 years (including 18 years and 75 years of age). * Patients diagnosed with paroxysmal atrial fibrillation via 12-lead electrocardiography or ambulatory electrocardiography and scheduled to undergo pulsed field ablation. * Subjects are able to understand the purpose of the study, voluntarily participate in the study and sign the informed consent, and are willing to complete the follow-up according to the requirements of the program. Exclusion Criteria: * Atrial fibrillation secondary to electrolyte imbalance, thyroid disorders, or reversible non-cardiac causes; * Previous history of catheter ablation or cardiac surgery for atrial fibrillation; * Prior surgical history including patent foramen ovale closure, atrial septal defect closure or repair; * Implantation of left atrial appendage occluder, mechanical mitral valve prosthesis, or valvuloplasty ring containing metallic materials; * Concomitant other tachyarrhythmias requiring catheter ablation (e.g., atrioventricular reentrant tachycardia, atrioventricular nodal reentrant tachycardia, atrial tachycardia, atrial flutter, Wolff-Parkinson-White syndrome, etc.); * Persistent atrial fibrillation; * Left atrial anteroposterior diameter (LAD) \> 55 mm on transthoracic echocardiography; * Women who are pregnant, breastfeeding, or of childbearing age with plans to become pregnant during the clinical trial; * Current participation in another pharmaceutical or medical device clinical study.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation paroxysmal atrial fibrillation

As listed by the trial registrant

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

Paroxysmal atrial fibrillation (PAF)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

More trials for these conditions

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