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Postoperative PainPhase 1/2GRIPPNCT03750773

Gabapentin for Relief of Immediate Postoperative Pain

A Phase 1/2 study testing Gabapentin 600mg in people with Postoperative Pain, run by Indiana University.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

The purpose of this study is to use gabapentin as an additional or alternative treatment for short term pain control following cesarean delivery in order to reduce the use of opioid pain medication and improve overall pain control following surgery. Read more about this study

Who is it for?
Ages 18 years and older, women only
Conditions the study is for
Postoperative Pain
What is being tested?
Gabapentin 600mg
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
0 participants
Where
No sites listed yet
Study dates
2 Jul 2019to Apr 2020
Phase
Phase 1/2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Pregnant women at least 18 years of age
  • Gestational age > or = to 30 weeks
  • Singleton gestation
  • Women undergoing a non-emergent cesarean delivery
  • Spinal anesthesia or combined spinal-epidural anesthesia utilized during cesarean
  • Ability to undergo the informed consent process in English

Who cannot join

  • Vertical skin incision
  • General anesthesia for cesarean
  • History of major depression or postpartum depression requiring medication
  • Chronic opiate use during pregnancy, defined as anyone who has taken an opioid or opioid replacement therapy in the 3 days prior to admission for delivery. This does not include opioids given for labor anesthesia.
  • Magnesium sulfate treatment postpartum
  • Preexisting fibromyalgia, chronic pain syndrome, or rheumatologic disorder

About this study

Official title: GRIPP: Gabapentin for Relief of Immediate Postoperative Pain

The purpose of this study is to use gabapentin as an additional or alternative treatment for short term pain control following cesarean delivery in order to reduce the use of opioid pain medication and improve overall pain control following surgery.

Read the detailed description

This is a randomized, placebo controlled, double blind study. After consent, the subject will complete a Depression Screening to establish a baseline score. Within 2 hours following completion of a cesarean section, the subject will be given the study drug (600mg Gabapentin) or placebo. She will be given this every 8 hours for 48 hours scheduled. She will also have the option to take routine opioid pain medication if her pain is uncontrolled. She will be asked to rate her postoperative pain on a Visual Analog Scale prior to receiving the study drug, 2-4 hours after each dose, and at 24, 36, and 48 hours postoperatively. For breastfeeding infants, data will be collected regarding overall feeding quality, somnolence levels, gestational age at birth, infant weight at birth and discharge, the highest bilirubin level while inpatient and any treatment for this as applicable. The subject will complete the Depression Scale again at 48 hours following delivery. At one week postpartum, they will receive a phone call and the following will be addressed: a final pain survey, a Depression survey, nausea level, number of pain pills left in their prescription, adverse events, whether or not they would take the study drug again if they should happen to have another cesarean section, and infant well-being if breastfeeding.

Being tested
Gabapentin 600mg, Placebo oral capsule
Medical subject headings
Pain, Postoperative

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Gabapentin 600mgDrug

    Subject is given Gabapentin 600mg every 8 hours x 48 hours postoperatively for pain control.

  • Placebo oral capsuleDrug

    Subject is given a Placebo capsule every 8 hours x 48 hours postoperatively for pain control.

Study groups in NCT03750773
Study groupRoleWhat they receive
Subjects receiving gabapentin drugActive comparatorAdministration of Gabapentin 600mg orally every 8 hours. Women will receive gabapentin for a total of 48 hours after cesarean
Receives: Drug: Gabapentin 600mg
Subjects receiving placebo oral capsulePlacebo comparatorAdministration of identical placebo capsule orally every 8 hours. Women will receive placebo for 48 hours after cesarean
Receives: Drug: Placebo oral capsule

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Total morphine milligram equivalents consumed in the first 48 hours postoperatively

    The total morphine milligram equivalents consumed by the subjects within the first 48 hours postoperatively will be recorded and compared between the two arms.

    Measured: 48 hours

Secondary outcomes (3)
  1. Total morphine milligram equivalents from hospital discharge to one week postoperatively

    The total number of pills of postoperative opioid pain medication consumed will be recorded, converted into morphine milligram equivalents, and compared between the two arms.

    Measured: one week

  2. Subject reported pain rating on a Visual Analog Scale within the first 48 hours postoperatively

    Each subject will report a measure of pain on a Visual Analog Scale before and 2-4 hours after each dose of study drug or placebo, and at 24, 36, and 48 hours postoperatively.

    Measured: 48 hours

  3. Number and type of adverse events potentially associated with study drug (Safety and Tolerability)

    Adverse events of maternal dizziness, nausea, notable peripheral edema, suicidal behavior or ideation, infant somnolence, and drug reactions will be recorded

    Measured: one week

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Nov 2018
  2. Study start2 Jul 2019 (estimated)
  3. Primary completionMar 2020 (estimated)
  4. Study completionApr 2020 (estimated)

Why it stopped: Lack of funding

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03750773
Sponsor's protocol ID
1809661339
Acronym
GRIPP
Status last verified
Jul 2020
First submitted
16 Nov 2018
Last updated
29 Jul 2020
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Gabapentin 600mg in people with Postoperative Pain, run by Indiana University.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 29 Jul 2020. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Total morphine milligram equivalents consumed in the first 48 hours postoperatively (time frame: 48 hours). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Jul 2020; AzTrials last refreshed its copy on 7 Nov 2026.

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