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Could pacing the diaphragm ease heart failure?

NCT ID NCT07392749

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether electrically pacing the diaphragm through a vein near the heart can improve heart function in people with heart failure. Ten adults who are already scheduled for a heart device (CRT) will have an extra pacing lead placed temporarily. Researchers will check if the diaphragm can be paced safely and if it helps the heart pump better, with follow-up one week after discharge.

What this could mean

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

Active substance
diaphragm synchronized pacing (a procedure using a pacing lead placed in a vein near the diaphragm)
What this could lead to
If it works, this could point toward a new way to help the heart pump more effectively in people with heart failure, potentially improving symptoms and quality of life.
What could go wrong
This is a very early, small study with only 10 participants and a short follow-up. The procedure is experimental, and it may not work or could cause complications like lead dislodgement or vein injury.

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 10 people

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

Started

Nov 2025

Expected to finish

Mar 2026

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 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: * Patients aged \>=18 yrs; * Patients indicated for CRT or CRT-D , planned for LV lead implantation; * Patients are willing to participate in the study and provide signed informed consent Exclusion Criteria: * CRT or CRT-D replacement * Ischemic heart disease with CABG history * Diaphragm dysfunction history * Phrenic nerve injury * IVC filter history * Abdominal surgery history * Splenomegaly * Pulmonary disease * Moderate or severe liver cirrhosis * Severe hepatic or renal dysfunction * Currently pregnant or planning pregnancy during the study period * Patients participate in another study that will confound this study

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

How to take part

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

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

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

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  3. 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.

Contacts and locations

Locations

  • Renji Hospital

    RECRUITING

    Shanghai, Shanghai Municipality, 200127, China

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