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Can exercise MRI reveal hidden heart issues in pacemaker patients?

NCT ID NCT06601322

Knowledge-focused Sponsor: Virginia Commonwealth University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 13, 2026 · Updated 2 times

Summary

This study looks at whether it is safe and possible to do a special exercise test (MRI combined with a bike workout) in 20 people who already have a specific type of pacemaker. The goal is to see how different pacemaker settings affect the heart's pumping ability during light exercise. Results will help doctors better understand right and left heart function in these patients.

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

5 people

The number who actually took part.

Started

Aug 2024

Finished

May 2025

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 years and older

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: * presence of dual chamber LBBAP implantation * presence of anodal capture with bipolar pacing configuration as determined at pacing implant. Exclusion Criteria: * Known history of chronotropic incompetence * high degree or complete heart block * inability to tolerate NVP during initial device interrogation * pregnancy * inability to undergo MRI or exercise utilizing supine bicycle at target work-load * presence of MRI unsafe pacemaker components.

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Conditions

The condition(s) this trial relates to.

bundle branch block, familial isolated complete right progressive familial heart block, type 1A

As listed by the trial registrant

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

Left branch bundle block RV - right ventricular abnormality

Contacts and locations

Locations

  • Virginia Commonwealth University

    Richmond, Virginia, 23298, United States

More trials for these conditions

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