- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05236985
Oxytocin Bolus Versus Infusion in Elective Cesarean Section" (INBOX)
Randomized Double-Blinded Clinical Trial of Oxytocin Bolus Versus Infusion in Elective Cesarean Section
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Estimated)
Phase
- Phase 4
Contacts and Locations
Study Contact
- Name: Tifany E Angelo, DO
- Phone Number: 42975 631-444-2975
- Email: mailto:Tiffany.Angelo@stonybrookmedicine.edu
Study Contact Backup
- Name: Ayesha Khan
- Phone Number: 42120 6314447339
- Email: ayesha.khan@stonybrookmedicine.edu
Study Locations
-
-
New York
-
Stony Brook, New York, United States, 11794-8167
- Recruiting
- Stony Brook University
-
Contact:
- Ayesha Kham
- Phone Number: 631-444-7339
- Email: ayesha.khan@stonybrookmedicine.edu
-
Contact:
- TIFFANY ANGELO, DO
- Phone Number: 6314442975
- Email: Tiffany.Angelo@stonybrookmedicine.edu
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Parturients between the ages of 18 to 45 with singleton pregnancies
- Undergoing elective cesarean section under spinal anesthesia
- American Society of Anesthesia (ASA) physical status class I or II
- Patients must be able to provide written informed consent
Exclusion Criteria:
- Parturients in labor or ruptured membranes
- Multiple gestation
- Risk factors predisposing to uterine atony (history of placenta previa, preeclampsia, diabetes mellitus macrosomia, hydramnios, bleeding diathesis, uterine fibroids)
- History of uterine atony or postpartum hemorrhage
- History of inherited or acquired coagulation disorders, thrombocytopenia (platelet count <100), or anemia (hemoglobin < 8)
- History of allergy to oxytocin
- Patients not alert and orientated to person, place, and date. Patient must have, in the investigator's opinion, the physical and mental capacity to answer survey questions
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Bolus arm
Patients will receive 3 IU oxytocin IV bolus over 15 seconds after delivery of the baby/uterine cord clamping and a maintenance infusion of 0.9% Saline will be started at 225ml/hr.
If uterine tone is inadequate after 3 minutes, a second bolus of 3 IU oxytocin will be given.
If uterine tone is inadequate after an additional 3 minutes, a third bolus of 3 IU Oxytocin IV is given over 15 seconds.
If after an additional 3 mins uterine tone is still inadequate, a second infusion consisting of oxytocin 3 IU/hr is started at 100ml/hrs and continued for a total of 4 hours, second line uterotonic agents (Methergine, Hemabate and/ or Cytotec) will be given, and the maintenance 0.9% Saline infusion will be changed to 450 ml/hr for a total of 1 hour, then changed to 38 ml/ hour for the following 3 hours.
If uterine tone is considered adequate at 3, 6 or 9 minutes, a second infusion of oxytocin 3 IU/hr (100ml/hr) is started and maintained for 4 hours.
|
On the day of surgery, the patients will be randomized to either bolus or infusion administration of oxytocin. On the day of the procedure, periprocedural data and patient satisfaction (single question) will be recorded. |
Active Comparator: Infusion arm
Patients will receive a bolus of IV 0.9% Saline over 15 seconds after delivery of the baby/uterine cord clamping and a maintenance infusion of 18 IU/hr Oxytocin IV (225ml/hr).
If uterine tone is inadequate after 3 minutes, a second bolus of 0.9% Saline will be given.
If uterine tone is inadequate after another 3 minutes, a third bolus of 0.9% Saline will be given.
If after another 3 mins uterine tone is inadequate, a second infusion of 0.9% Saline will be started for 4 hours, second line uterotonic agents (Methergine, Hemabate and/or Cytotec) will be given, and the Oxytocin infusion will be changed to 36 IU/hour (450 ml/hr) for a total of 1 hour, and then changed to 38 ml/hr for the following 3 hours.
If uterine tone is considered adequate at 3, 6 or 9 minutes, a second infusion of 0.9% Saline at 100 ml/hr will be started and maintained for 4 hours, along with the maintenance infusion of 18 IU/hr (225 ml/ hr) for a total of 1 hour, then changed to 38 ml/hr for an additional 3 hours.
|
On the day of surgery, the patients will be randomized to either bolus or infusion administration of oxytocin. On the day of the procedure, periprocedural data and patient satisfaction (single question) will be recorded. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number/Proportion of Participants with Adequate Uterine tone
Time Frame: 2 minutes
|
Adequacy of uterine tone (yes/no) at 2 minutes after the baby is born/umbilical cord clamped.
|
2 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Patient satisfaction questionnaire (Scale 0 to 10, 0 being complete dissatisfaction and 10 being highly satisfied
Time Frame: 2± 1 hours after surgery
|
Patients will complete a questionnaire 2± 1 hours after surgery
|
2± 1 hours after surgery
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Tiffany E Angelo, DO, Stony Brook University
Publications and helpful links
General Publications
- Say L, Chou D, Gemmill A, Tuncalp O, Moller AB, Daniels J, Gulmezoglu AM, Temmerman M, Alkema L. Global causes of maternal death: a WHO systematic analysis. Lancet Glob Health. 2014 Jun;2(6):e323-33. doi: 10.1016/S2214-109X(14)70227-X. Epub 2014 May 5.
- Balki M, Tsen L. Oxytocin protocols for cesarean delivery. Int Anesthesiol Clin. 2014 Spring;52(2):48-66. doi: 10.1097/AIA.0000000000000016. No abstract available.
- Terblanche N, Otahal P, Messmer A, Wright P, Patel S, Nathan K, Sharman JE. An observational cohort study of 3 units versus 5 units slow intravenous bolus oxytocin in women undergoing elective caesarean delivery. J Physiol Pharmacol. 2017 Aug;68(4):547-553.
- Fuchs AR, Fuchs F, Husslein P, Soloff MS. Oxytocin receptors in the human uterus during pregnancy and parturition. Am J Obstet Gynecol. 1984 Nov 15;150(6):734-41. doi: 10.1016/0002-9378(84)90677-x.
- Joseph J, George SK, Daniel M, Ranjan RV. A randomised double-blind trial of minimal bolus doses of oxytocin for elective caesarean section under spinal anaesthesia: Optimal or not? Indian J Anaesth. 2020 Nov;64(11):960-964. doi: 10.4103/ija.IJA_377_20. Epub 2020 Nov 1.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB 2021-00558
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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