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Heart surgery patients: one in six may face hidden diaphragm trouble

NCT ID NCT04276844

Knowledge-focused Sponsor: CMC Ambroise Paré Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tracked 157 heart surgery patients to see how many still have a weak diaphragm 7 days after their operation. Using ultrasound, researchers measured diaphragm movement during breathing and sniffing. The goal is to understand how common persistent diaphragm problems are and how they relate to breathing complications after surgery.

What this could mean

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

What this could lead to
If successful, this study could help doctors identify patients at risk for breathing problems after heart surgery and improve recovery plans.
What could go wrong
This is an observational study, not a treatment trial. It only measures the problem—it does not test any new therapy or intervention.

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.

Participants

157 people

The number who actually took part.

Started

Mar 2020

Finished

Jan 2021

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.

Who is studied

150 patients undergoing cardiac surgery

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 undergoing cardiac surgery requiring sternotomy * Consent for participation * Affiliation to the social security system Exclusion Criteria: * Contraindication to preoperative respiratory functional explorations * Pregnant or breastfeeding women * Patients under protection of the adults (guardianship, curators or safeguard of justice) * Communication difficulties or neuropsychiatric disorder

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Conditions

The condition(s) this trial relates to.

respiratory paralysis

As listed by the trial registrant

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

Surgery (cardiac)

Contacts and locations

Locations

  • CMC Ambroise Paré

    Neuilly-sur-Seine, Île-de-France Region, 92200, France

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