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Oxygen for fetal distress: helpful or just hot air?

NCT ID NCT05681624

Knowledge-focused Sponsor: Washington University School of Medicine 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Aug 11, 2026 · Updated 4 times

Summary

This study looks at whether giving mothers extra oxygen during labor when the baby's heart rate is concerning actually improves baby health. About 2,100 women with full-term, single-baby pregnancies will be randomly assigned to receive either oxygen or regular room air. The goal is to see if oxygen reduces serious newborn complications like breathing problems, seizures, or death.

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 2,252 people

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

Started

May 2023

Expected to finish

Dec 2028

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

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Singleton gestation * Gestational age\>=37 weeks * Spontaneous labor or induction of labor * English or spanish speaking * Planned continuous fetal monitoring Exclusion Criteria: * Preterm gestation * Major fetal anomaly * Multiple gestation * Category III fetal monitoring at time of admission * Maternal hypoxia \<95% * Planned or scheduled cesarean delivery Excluded from randomization if receiving nitrous oxide for analgesia at time of randomization.

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Conditions

The condition(s) this trial relates to.

Fetal Distress Fetal Hypoxia pregnancy disorder

As listed by the trial registrant

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

Fetal distress Fetal hypoxia Labor and delivery complication

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.

    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

  • Barnes Jewish Hospital

    RECRUITING

    St Louis, Missouri, 63110, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.