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No X-Rays needed? Ultrasound-Guided pacemaker implant shows promise

NCT ID NCT07458724

Disease control Sponsor: Chinese Academy of Medical Sciences, Fuwai Hospital 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested whether permanent pacemakers can be safely implanted using only ultrasound (transthoracic echocardiography) instead of traditional X-ray guidance. Thirty-one adults with arrhythmias who needed a pacemaker took part. The goal was to see if the procedure could be done without radiation while still being safe and effective.

What this could mean

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

Active substance
Permanent pacemaker implantation guided by transthoracic echocardiography (ultrasound) without X-rays
What this could lead to
If successful, this could lead to a radiation-free method for pacemaker implantation, reducing risks for patients and staff.
What could go wrong
This is a small, early feasibility study with only 31 participants, so results may not apply to all patients. The ultrasound approach may not work for everyone, especially those with poor imaging windows.

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

31 people

The number who actually took part.

Started

Sep 2024

Finished

Feb 2026

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: 1. Age ≥ 18 years 2. Indication for permanent pacemaker implantation according to current ESC or ACC/AHA guidelines 3. Adequate transthoracic echocardiographic acoustic window allowing visualization of right atrium, right ventricle, and interventricular septum 4. Ability to provide written informed consent Exclusion Criteria: 1. Inadequate transthoracic acoustic window precluding reliable visualization of right-sided cardiac structures 2. Severe tricuspid regurgitation (moderate-to-severe or greater) 3. Left ventricular ejection fraction \<35% without indication for cardiac resynchronization therapy 4. Documented malignant ventricular arrhythmia requiring implantable cardioverter-defibrillator as primary indication 5. Intrinsic heart rate \<40 beats per minute with hemodynamic instability requiring emergent pacing 6. Active systemic infection 7. Pregnancy 8. Life expectancy less than 12 months due to non-cardiac comorbidities

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Conditions

The condition(s) this trial relates to.

Arrhythmias, Cardiac cardiac rhythm disease

As listed by the trial registrant

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

Arrhythmia

Contacts and locations

Locations

  • National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences

    Beijing, 100037, China

More trials for these conditions

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