Low-Dose Versus High-Dose Oxytocin Dosing for Induction and Augmentation of Labor

NCT ID: NCT05782816

Last Updated: 2026-01-09

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

170 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-04-17

Study Completion Date

2025-06-24

Brief Summary

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The goal of this clinical trial is to compare oxytocin infusion rates for induction and augmentation of labor in nulliparous women. The main question\[s\] it aims to answer are:

* Does a high dose oxytocin infusion protocol affect length of induction to delivery interval?
* Does a high dose oxytocin infusion protocol affect mode of delivery?
* Does a high dose oxytocin infusion protocol affect maternal and neonatal outcomes?

Participants will be randomized to either low- or high-dose oxytocin groups:

* The low dose group will receive an infusion to start at 2 milli-units/min and will be increased by 2 milli-units/min every 20 minutes. The maximum rate of infusion is 40 milli-units/min.
* The high dose group will receive an infusion to start at 6 milli-units/min and will be increased by 6 milli-units/min every 20 minutes. Maximum rate of infusion is 40 milli-units/min.

Detailed Description

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Conditions

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Labor Long

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Low dose oxytocin

The low dose oxytocin group will receive a controlled infusion pump at a proximal port on the peripheral IV line. The infusion will start at 2 milli-units/min and will be increased by 2 milli-units/min every 20 minutes. Maximum rate of infusion is 40 milli-units/min. Oxytocin infusion rate is adjusted to maintain adequate uterine contractions.

Group Type ACTIVE_COMPARATOR

Oxytocin (Low dose)

Intervention Type DRUG

Low dose oxytocin

High dose oxytocin

The high dose oxytocin group will receive a controlled infusion pump at a proximal port on the peripheral IV line. The infusion will start at 6 milli-units/min and will be increased by 6 milli-units/min every 20 minutes. Maximum rate of infusion is 40 milli-units/min. Oxytocin infusion rate is adjusted to maintain adequate uterine contractions.

Group Type ACTIVE_COMPARATOR

Oxytocin (High dose)

Intervention Type DRUG

High dose oxytocin

Interventions

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Oxytocin (Low dose)

Low dose oxytocin

Intervention Type DRUG

Oxytocin (High dose)

High dose oxytocin

Intervention Type DRUG

Other Intervention Names

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Pitocin Syntocinon Pitocin Syntocinon

Eligibility Criteria

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Inclusion Criteria

* Women aged 18-50 years old
* Singleton gestation
* Nulliparous
* Vertex presentation
* Gestational age greater than or equal to 37 weeks
* No prior uterine surgery
* Presents for elective or medically indicated induction of labor
* Need for augmentation of labor with oxytocin

Exclusion Criteria

* Previous cervical ripening using non-mechanical methods
* Patient unable or unwilling to provide verbal consent
* Contraindications to vaginal delivery
* Fetal demise or life-limiting anomaly
* Allergy to oxytocin
* Non-reassuring fetal heart tracing prior to inclusion
* Maternal pulmonary edema prior to inclusion
* Fetal growth restriction
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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The University of Texas Medical Branch, Galveston

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Amanda Wang, MD

Role: PRINCIPAL_INVESTIGATOR

University of Texas

Locations

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University of Texas Medical Branch

Galveston, Texas, United States

Site Status

Countries

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United States

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

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22-0240

Identifier Type: -

Identifier Source: org_study_id

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