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Could pacing the diaphragm ease heart failure?
NCT ID NCT07392749
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
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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
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About 10 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Mar 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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.
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The places running it
1 site. The list below names each one and where it is.
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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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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
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Renji Hospital
RECRUITINGShanghai, Shanghai Municipality, 200127, China
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