Clinical trial Recruiting at 1 site Interventional Ages 18 to 50 Women only

Comparing carbetocin and oxytocin to prevent postpartum bleeding after cesarean delivery

Official title: Comparative Efficacy of Carbetocin and Oxytocin in Parturients at Risk of Atonic Postpartum Hemorrhage Undergoing Elective Cesarean Delivery: a Randomized Controlled Trial

Run by Samuel Lunenfeld Research Institute, Mount Sinai Hospital · NCT06333340 · Data updated 2026-11-12

This study is testing whether carbetocin works better than oxytocin to prevent heavy bleeding after a cesarean delivery in women who are at higher risk for this complication.

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Quick facts

Study typeInterventional
Ages18 Years to 50 Years
SexWomen only
Enrollment160 (estimated)
SponsorSamuel Lunenfeld Research Institute, Mount Sinai Hospital
Academic / other
Locations1 site (Toronto, Ontario)
StatusRecruiting
StartedJanuary 14, 2025
Main results expectedDecember 2026
Study endsDecember 2026
Registry record updatedApril 1, 2026
Trial IDNCT06333340 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are pregnant women undergoing elective cesarean delivery who have one or more risk factors for postpartum hemorrhage.

Probably not a fit

Patients with conditions such as heart disease, bleeding disorders, or allergies to the study medications may 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 study aims to compare the effectiveness of two medications, carbetocin and oxytocin, in preventing postpartum hemorrhage (PPH) in women undergoing elective cesarean delivery who are at increased risk for this complication. The trial focuses on patients with risk factors such as multiple gestation, large baby, and obesity, among others. By administering these medications, the study seeks to determine which is more effective in reducing the incidence of PPH. The hypothesis is that carbetocin will outperform oxytocin in this high-risk population.

Why it matters

Potential benefit: If successful, this study could lead to improved prevention strategies for postpartum hemorrhage, potentially saving lives and reducing maternal morbidity.

How similar studies have gone: Other studies have suggested that carbetocin may be more effective than oxytocin in preventing postpartum hemorrhage, indicating a promising approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria - Any one or more of the risk factors for uterine atony:

* Overdistended uterus due to:

  * Polyhydramnios (amniotic fluid index \>24 cm)
  * Fetal macrosomia reported on prenatal ultrasound \>90th centile or \> 4000 gm
  * Multiple gestation
* History of uterine atony/PPH (documented with blood loss of \>1000 ml, blood transfusion, use surgical methods such as Bakri balloon, B-Lynch sutures, uterine artery ligation or embolization)
* Obesity with body mass index (BMI) \>40 kg/m2
* Diabetes mellitus on treatment
* Preeclampsia on treatment
* Placenta previa

Exclusion criteria:

* Valvular heart disease, arrhythmias, or heart failure
* Placenta accreta spectrum
* Bleeding disorder
* Anemia (\<100 g/dl)
* Allergy or sensitivity to oxytocin or carbetocin

Where it's running

  • Mount Sinai Hospital
    Toronto, Ontario, Canada
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Evaluating ultrasound to predict postpartum hemorrhage risk

    This study is testing if ultrasound exams done shortly after delivery can help predict the risk of bleeding complications for new mothers in the hours following childbirth.

    Recruiting Endeavor Health · Evanston, Illinois · NCT06898034

  • Predicting the risk of postpartum hemorrhage during childbirth

    This study tests a new computer model that predicts the risk of heavy bleeding after childbirth to help doctors take better care of new moms.

    Recruiting Vanderbilt University Medical Center · Nashville, Tennessee · NCT06513351

  • Point-of-care hemoglobin testing during pregnancy

    This project will test non-invasive and finger-prick devices to see if they give accurate, immediate hemoglobin readings for pregnant people during prenatal visits.

    Recruiting Inova Health Care Services · Washington D.C., District of Columbia and 1 other locations · NCT05977686

  • Investigating how oxytocin works during cesarean deliveries

    This study is testing how oxytocin works during scheduled cesarean deliveries to see if it helps prevent complications like uterine atony in new mothers.

    Recruiting Phase 2 Stanford University · Stanford, California and 1 other locations · NCT05488457

  • Using Tranexamic Acid to Prevent Postpartum Hemorrhage

    This study is testing if Tranexamic Acid can help prevent heavy bleeding after childbirth in women having cesarean sections or vaginal deliveries.

    Recruiting at 2 sites Phase 2 Inova Health Care Services · Washington D.C., District of Columbia and 1 other locations · NCT05370820

  • Pre-eclampsia risk in pregnancies after oocyte donation

    We will follow pregnant women who used donated eggs and women who used their own eggs to see if pregnancies after oocyte donation lead to a higher risk of pre-eclampsia.

    Recruiting at 6 sites Copenhagen University Hospital, Hvidovre · Copenhagen and 5 other locations · NCT07263490

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.