Comparing uterotonic drugs to prevent postpartum bleeding after cesarean delivery

Comparing the Dose-response Profiles of Uterotonics After Initial Carbetocin Administration - an Ex-vivo Study in Desensitized Human Myometrium

Not applicable Interventional Samuel Lunenfeld Research Institute, Mount Sinai Hospital · NCT06285409

This study tests if giving extra doses of carbetocin or trying other medications can help women who have had a cesarean delivery prevent heavy bleeding by improving how well their uterus contracts.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment32 (estimated)
Ages18 Years to 45 Years
SexFemale
SponsorSamuel Lunenfeld Research Institute, Mount Sinai Hospital Academic / other
Locations1 site (Toronto, Ontario)
Trial IDNCT06285409 on ClinicalTrials.gov

What this trial studies

This study investigates the effectiveness of various uterotonic medications in enhancing uterine contractions after the administration of carbetocin, a drug commonly used to prevent postpartum hemorrhage. By analyzing small samples of uterine tissue taken from women undergoing cesarean sections, the study aims to determine if re-dosing with carbetocin or using alternative drugs like oxytocin, ergometrine, or carboprost can improve uterine contractility. The research focuses on addressing the issue of uterine atony, which can lead to excessive bleeding after childbirth. The findings could provide insights into optimizing treatment protocols for postpartum hemorrhage.

Who should consider this trial

Good fit: Ideal candidates for this study are non-laboring women with a gestational age of 37-41 weeks undergoing elective cesarean delivery.

Not a fit: Patients who are in labor, require general anesthesia, or have conditions predisposing them to uterine atony may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management of postpartum hemorrhage, reducing maternal morbidity and mortality.

How similar studies have performed: While the use of uterotonics is well-established, this specific approach of comparing re-dosing strategies is novel and has not been extensively tested in previous studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion criteria

* Patients who give written consent to participate in this study
* Patients with gestational age 37-41 weeks
* Non-laboring patients, not exposed to exogenous oxytocin
* Patients requiring elective primary or first repeat CD
* Patients undergoing CD under spinal anesthesia

Exclusion criteria

* Patient refusal
* Patients who require general anesthesia
* Patients in labour and those receiving oxytocin for induction of labour
* Emergency CD
* placenta accreta spectrum disorder
* Patients who have had previous uterine surgery or \>1 previous CD
* Patients with any condition predisposing to uterine atony and PPH (BMI \> 40 kg/m2,
* Patients on medications that could affect myometrial contractility, such as insulin, nifedipine, labetalol or magnesium sulphate.

Where this trial is running

Toronto, Ontario

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Postpartum Hemorrhagecarbetocinduratocinoxytocinuterine contraction
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.