Giving extra oxygen to mothers during labor to help the baby

Maternal oxygen supplementation for Intrauterine Resuscitation: a Multicenter Randomized Trial

NIH-funded research Washington University · NIH-11175466

This trial compares giving laboring mothers extra oxygen versus breathing room air when the fetal heart rate looks concerning, to see which leads to better newborn outcomes.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionWashington University NIH-funded
Lab location1 site (Saint Louis, United States)
Project IDNIH-11175466 on NIH RePORTER

What this research studies

If your baby's heart rate shows concerning patterns during labor, you may be randomly assigned to receive extra oxygen through a mask or to breathe room air. Care teams will continue standard fetal monitoring and collect routine newborn measures like Apgar scores, cord blood tests, and whether the baby needs NICU care. The study happens at multiple hospitals and compares outcomes between those who got oxygen and those who did not to determine which approach is safer and more helpful for babies.

Who could benefit from this research

Good fit: Ideal candidates are pregnant people admitted in labor at a participating hospital whose baby shows Category II (indeterminate) fetal heart rate patterns and who meet the study's delivery-room eligibility criteria.

Not a fit: People not in active labor, those with normal fetal heart tracings, those having a planned cesarean before labor, or those needing oxygen for maternal medical reasons likely would not benefit from joining this trial.

Why it matters

Potential benefit: If successful, the trial could clarify whether giving extra oxygen to mothers during labor improves newborn health or is unnecessary, potentially changing routine labor care.

How similar studies have performed: Smaller randomized trials and a meta-analysis found no clear benefit of maternal oxygen and a pilot trial showed room air was noninferior for some cord-blood measures, so this larger trial aims to confirm those findings.

Where this research is happening

Saint Louis, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.