Post-operative Cesarean Trial of Pain Control

February 4, 2026 updated by: University of Colorado, Denver

Double Blind Randomized Trial of Post-operative Cesarean Continuous Infusion of Bupivacaine Versus Placebo for Local Incisional Pain Control

This study plans to learn more about postoperative pain management after cesarean deliveries (C-sections). As a part of standard of care, the Children's Hospital Colorado's Colorado Fetal Care Center (CFCC) follows the standard Enhanced Recovery After Cesarean (ERAC) guidelines to manage pain following C-section delivery. In addition, the CFCC uses an FDA approved medical device called the ON-Q ® Pump, which continuously delivers local anesthetic medication to control pain in the area of your procedure. The local anesthetic used is bupivacaine, which is FDA approved for use to control local pain after C-sections. The CFCC has found a significant reduction in opioid use after adopting both of these procedures. The study aims to determine if the ERAC protocol or ON-Q ® Pump continuous infusion is responsible for lower opioid use by comparing bupivacaine (treatment) versus saline (placebo) groups.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
100

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years to 46 years (Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Pregnant patients 18 years of age or older
  • Patients undergoing both scheduled and unscheduled cesarean deliveries at CFCC

Exclusion Criteria:

  • Active substance abuse (ex methamphetamines) determined by patient report, toxin screen, or screening physician's determination
  • Current treatment for chronic pain involving opiate receptor agonism or antagonism (i.e. suboxone, methadone, naltrexone, oxycodone)
  • Contraindication to neuraxial anesthesia
  • Known allergies to common anesthetic medications
  • Inability to consent to study procedures
  • Patient receiving general anesthesia

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Saline
ON-Q Pump® with continuous infusion of saline (270 mL of normal saline)
Device: ON-Q Pump® with continuous infusion of saline
270 mL of normal saline. The device being used is a fixed flow pump meaning the rate of 2 mL/hour. The pump is connected to the catheter and left in place for up to 4 post-operative days or until the completion of the infusion.
Experimental: Bupivacaine
ON-Q Pump® with continuous infusion of bupivacaine (270 ml of 0.5 % bupivacaine)
Device: ON-Q Pump® with continuous infusion of bupivacaine
270 ml of 0.5 % bupivacaine. The device being used is a fixed flow pump meaning the rate of 2 mL/hour. The pump is connected to the catheter and left in place for up to 4 post-operative days or until the completion of the infusion.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Total postoperative opioid use
Time Frame: Post-operative day 4
Total postoperative opioid use in morphine equivalents through discharge
Post-operative day 4

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Patient satisfaction survey with Visual Analog Scale (VAS) Pain Score
Time Frame: At hospital discharge (about post-operative day 5)
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (score of 0) and "worst pain" (score of 100 [100-mm scale]).
At hospital discharge (about post-operative day 5)
Antiemetic use at Baseline
Time Frame: Baseline
Daily antiemetic use by number of doses through discharge
Baseline
Antiemetic use at post-operative day 1
Time Frame: Post-operative day 1
Daily antiemetic use by number of doses through discharge
Post-operative day 1
Antiemetic use at post-operative day 2
Time Frame: Post-operative day 2
Daily antiemetic use by number of doses through discharge
Post-operative day 2
Antiemetic use at post-operative day 3
Time Frame: Post-operative day 3
Daily antiemetic use by number of doses through discharge
Post-operative day 3
Antiemetic use at post-operative day 4
Time Frame: Post-operative day 4
Daily antiemetic use by number of doses through discharge
Post-operative day 4
Antiemetic use at hospital discharge (about post-operative day 5)
Time Frame: At hospital discharge (about post-operative day 5)
Daily antiemetic use by number of doses through discharge
At hospital discharge (about post-operative day 5)
Visual Analog Scale (VAS) Pain Score at Baseline
Time Frame: Baseline
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (score of 0) and "worst pain" (score of 100 [100-mm scale]).
Baseline
Visual Analog Scale (VAS) Pain Score at post-operative day 1
Time Frame: Post-operative day 1
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (score of 0) and "worst pain" (score of 100 [100-mm scale]).
Post-operative day 1
Visual Analog Scale (VAS) Pain Score at post-operative day 2
Time Frame: Post-operative day 2
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (score of 0) and "worst pain" (score of 100 [100-mm scale]).
Post-operative day 2
Visual Analog Scale (VAS) Pain Score at post-operative day 3
Time Frame: Post-operative day 3
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (score of 0) and "worst pain" (score of 100 [100-mm scale]).
Post-operative day 3
Visual Analog Scale (VAS) Pain Score at post-operative day 4
Time Frame: Post-operative day 4
The visual analog scale (VAS) is a validated, subjective measure for acute and chronic pain. Scores are recorded by making a handwritten mark on a 10-cm line that represents a continuum between "no pain" (score of 0) and "worst pain" (score of 100 [100-mm scale]).
Post-operative day 4
Time to advance to regular diet
Time Frame: Up to post-operative day 4
Time to advance to regular diet through discharge
Up to post-operative day 4
Time to first ambulation
Time Frame: Up to post-operative day 4
Time to first ambulation
Up to post-operative day 4
Return on bowel function
Time Frame: Up to post-operative day 4
Return on bowel function (pass gas or bowel movement)
Up to post-operative day 4
Edinburgh Depression scale at hospital discharge (about post-operative day 5)
Time Frame: At hospital discharge (about post-operative day 5)
The 10-item Edinburgh Depression Scale (EDS) measures depressive symptoms. It includes three sub-scales: anhedonia, anxiety and depression. Possible total scores range from 0 to 30, with higher scores indicating more depressive symptoms and a worse outcome.
At hospital discharge (about post-operative day 5)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Colorado, Denver

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Children's Hospital Colorado
Avanos Medical
Colorado Fetal Care Center

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Michael Zaretsky, MD, Children's Hospital Colorado - Colorado Fetal Care Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 7, 2021

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 10, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 10, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 23, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 6, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 4, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 21-2810

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

Yes

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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