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Ultrasound peek inside ICU Patients' breathing muscles

NCT ID NCT04319939

Knowledge-focused Sponsor: University of Chicago 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at 66 ICU patients on breathing machines to see if ultrasound could measure diaphragm thickness differently depending on the machine's settings. Researchers compared two modes: one where the machine controls all breaths and one where the patient triggers some breaths. No treatments were tested; the goal was simply to gather information.

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

66 people

The number who actually took part.

Started

Feb 2020

Finished

Apr 2022

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

Adult patients admitted to the medical intensive care unit and receiving mechanical ventilation

Ages

18 years and older

Sex

Anyone

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 \> 18 years of age * intubated and mechanically ventilated for \< 48 hours at the time of screening Exclusion Criteria: * pregnancy * history of diaphragmatic paralysis * neuromuscular blockade * cardiac arrest

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As listed by the trial registrant

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

Mechanical ventilation

Contacts and locations

Locations

  • The University of Chicago Medical Center

    Chicago, Illinois, 60637, United States

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