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Which ventilator mode helps patients breathe on their own sooner?

NCT ID NCT03901924

Disease control 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 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This study compares two ways of using a breathing machine (mechanical ventilator) in adults who need help breathing. One mode lets the patient trigger each breath, while the other delivers a set number of breaths regardless of patient effort. The goal is to see which approach leads to more days off the ventilator and less thinning of the diaphragm muscle. The results could guide how ventilators are used in intensive care.

What this could mean

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

Active substance
mechanical ventilation modes (volume support and assist control)
What this could lead to
If one mode proves better, it could become the standard approach to help patients on ventilators recover faster and preserve diaphragm strength.
What could go wrong
This is a single trial, and results may not apply to all patient groups. Both modes are already in use, so the difference may be small.

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 468 people

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

Started

Mar 2019

Expected to finish

May 2027

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: subjects \> 18 years of age that have been intubated and mechanically ventilated for \< 36 hours at the time of screening will be eligible for enrollment Exclusion Criteria: 1. pregnancy 2. cardiopulmonary arrest 3. history of diaphragmatic paralysis or neuromuscular disease 4. chronic obstructive pulmonary disease (COPD) or asthma exacerbation with evidence of auto-PEEPing requiring intubation 5. neuromuscular blockade 6. expectation to be liberated from ventilator in \< 24 hours 7. history of mechanical ventilation in the last 6 months 8. presence of tracheostomy 9. high cervical spine injury

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Conditions

The condition(s) this trial relates to.

delirium

As listed by the trial registrant

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

Mechanical ventilation complication

How to take part

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

  1. The places running it

    2 sites. 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.

    Open the record ↗

  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

  • The University of Chicago Medical Center

    RECRUITING

    Chicago, Illinois, 60637, United States

  • University of Iowa

    NOT_YET_RECRUITING

    Iowa City, Iowa, 52242, United States

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