Clinical trial Recruiting at 1 site Interventional Women only

Investigating the use of oxytocin during the second stage of labor

Official title: Role of Oxytocin in the Second Stage of Labor: a Randomized Controlled Trial (The ROSSoL Trial)

Run by Washington University School of Medicine · NCT04303702 · Data updated 2026-11-12

This study is testing if continuing oxytocin during the pushing stage of labor helps first-time moms have better delivery outcomes or if it could cause unnecessary risks.

More Labor Complication trials

Quick facts

Study typeInterventional
SexWomen only
Enrollment400 (estimated)
SponsorWashington University School of Medicine
Academic / other
Locations1 site (St Louis, Missouri)
StatusRecruiting
StartedJuly 1, 2022
Main results expectedJune 1, 2027
Study endsSeptember 30, 2027
Registry record updatedJanuary 5, 2026
Trial IDNCT04303702 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are nulliparous pregnant women at or beyond 37 weeks of gestation who are in labor.

Probably not a fit

Patients with multiple gestations, major fetal anomalies, or those who are not on oxytocin at the time of complete cervical dilation will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized controlled trial examines the effects of continuing oxytocin administration during the second stage of labor in nulliparous women. While oxytocin is commonly used to enhance uterine contractions during the first stage of labor, its benefits and risks during the second stage remain unclear. The study aims to determine whether continuing oxytocin can improve delivery outcomes or if it poses unnecessary risks. Participants will be randomly assigned to either continue or discontinue oxytocin after reaching complete cervical dilation.

Why it matters

Potential benefit: If successful, this study could provide evidence to guide the safe use of oxytocin in labor, potentially improving maternal and neonatal outcomes.

How similar studies have gone: Previous studies have shown mixed results regarding the benefits of oxytocin in labor, making this investigation both relevant and necessary.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Nulliparous pregnant women \>/= 37 weeks gestation
* Singleton pregnancies
* Admission for induction of labor or spontaneous labor

Exclusion Criteria:

* Multiple gestations
* Multiparous patients
* Patients with major fetal anomalies
* Not on oxytocin at the time of complete cervical dilation
* Patients with fetal head visible at the perineum on diagnosis of complete cervical dilation
* Maternal medical condition that prohibits prolonged second stage

Where it's running

  • Barnes Jewish Hospital
    St Louis, Missouri, United States
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.