Effect of Perioperative Gabapentin on Postoperative Opioid Requirements

October 1, 2024 updated by: Douglass Hale, Indiana University
The purpose of this study is to determine if preoperative gabapentin is noninferior to preoperative and postoperative gabapentin for pain control in patients undergoing surgery for pelvic organ prolapse.

Study Overview

Status

Status

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

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 (Actual)

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.
114

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.
  • Phase 4

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

  • United States
    • Indiana
      • Indianapolis, Indiana, United States, 46202
        • Indiana University School of Medicine

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Women > 18 years old
  • English-speaking
  • Stage > 2 pelvic organ prolapse
  • Undergoing pelvic organ prolapse procedure (including native tissue vaginal procedure, native tissue laparoscopic procedure, mesh-augmented laparoscopic procedure, obliterative procedure)
  • Planning overnight stay

Exclusion Criteria:

  • Renal dysfunction (creatinine clearance <60 mL/min)
  • Allergy to acetaminophen and ibuprofen
  • Allergy to gabapentin
  • Patients on a Controlled Substance Agreement or Opioid Contract from another provider. This information is available in the IU Health electronic medical record, Cerner.

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: Preoperative Gabapentin/Postoperative Placebo
Drug: Preoperative Gabapentin/Postoperative Placebo
Postoperatively, this group will receive scheduled acetaminophen and ibuprofen every 6 hours, in addition to placebo every 12 hours. The placebo is encapsulated to appear identical to the active drug. This group will have oxycodone 5 mg every 6 hours as needed for pain.
Active Comparator: Preoperative Gabapentin/Postoperative Gabapentin
Drug: Preoperative Gabapentin/Postoperative Gabapentin
Postoperatively, this group will receive scheduled acetaminophen and ibuprofen every 6 hours, in addition to gabapentin every 12 hours. The gabapentin is encapsulated to appear identical to the placebo. This group will have oxycodone 5 mg every 6 hours as needed for pain.

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
Opioid Prescription at Discharge
Time Frame: Length of postoperative hospital stay (at discharge, an average of 32 hours from time of registration for surgery)
Percentage of patients requiring an opioid prescription at discharge in each group. Patients who use 5 or more doses of PRN opioids during inpatient postoperative course will receive a prescription for opioids.
Length of postoperative hospital stay (at discharge, an average of 32 hours from time of registration for surgery)

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
Opioid Refill Requests
Time Frame: 6 weeks
Number of patients in each group who call the office to request a new opioid prescription (if they were discharged without a prescription) or to request an opioid prescription refill (if they were discharged with a prescription) within the 6-week postoperative time period.
6 weeks
Inpatient Pain Scores
Time Frame: Length of postoperative hospital stay (an average of 32 hours following surgery)
Pain scores in the hospital will be measured on a numeric rating scale (0-10) with 0 being no pain and 10 being worst pain. Highest pain score recorded.
Length of postoperative hospital stay (an average of 32 hours following surgery)
Inpatient Morphine Milligram Equivalents
Time Frame: Length of postoperative hospital stay (an average of 32 hours following surgery)
Total morphine milligram equivalents used will be calculated by converting total PO and IV opioids used postoperatively until hospital discharge to morphine milligram equivalents using the opioid equianalgesic chart.
Length of postoperative hospital stay (an average of 32 hours following surgery)
Length of Stay
Time Frame: Time of registration for surgery to time of discharge from hospital
Length of stay will be measured in hours by time of registration for surgery to time of discharge from hospital.
Time of registration for surgery to time of discharge from hospital
Nausea
Time Frame: Length of postoperative hospital stay (an average of 32 hours following surgery)
Nausea will be measured by the number of "as needed" antiemetics the patient received postoperatively.
Length of postoperative hospital stay (an average of 32 hours following surgery)
Sedation
Time Frame: On postoperative day 1 between 6AM and 10AM
Sedation will be measured by the Stanford Sleepiness Scale. This is a self-administered scale that the patient will complete at 10AM on postoperative day 1.
On postoperative day 1 between 6AM and 10AM

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.
Indiana University

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: Douglass S Hale, MD, Indiana University School of Medicine

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.
July 27, 2021

Primary Completion (Actual)

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.
June 17, 2023

Study Completion (Actual)

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.
July 5, 2023

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).
August 8, 2022

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.
August 8, 2022

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.
August 10, 2022

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.
October 23, 2024

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.
October 1, 2024

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.
October 1, 2024

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.
  • OBGYN-IIR-PERI-OP-GABAPENTIN

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

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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