Gabapentin as Adjunctive Treatment for Postoperative Pain Control

Indiana University

Status and phase: Completed; Phase 1

Conditions: Drug Usage

Treatments: Drug: gabapentin; Drug: Placebo

Study type: Interventional

Funder types: Other

Identifiers

NCT02490345

1507497375

Details and patient eligibility

About

The specific aims of this research study are to use 600 mg gabapentin as an adjunctive treatment for acute postoperative pain control in order to reduce postoperative opiate consumption and improve postoperative pain control.

Full description

After consent has been obtained for the study and the cesarean has been completed, when the participant is in the recovery room, she will take the first pill of the study drug. This will occur approximately 30-60 minutes after the cesarean is completed. The time of first dose will be noted on the data capture form. The following will then occur:

• Participants will take study capsules (either 600 mg gabapentin or placebo) every 8 hours for the first 48 hours after beginning the study. The nurse on the unit will be sent the study drug in a blinded capsule by the Investigational Pharmacy.
• Participants will be asked about postoperative pain on a Visual Analog Scale by the care nurses or study personnel before each dose of study drug, before receiving any opioid medication, 2-4 hours after study drugs are consumed, at 24, 36 and 48 hours post surgery, and any other times during routine postoperative clinical care would warrant. Women record pain postoperatively on a similar scale as part of routine clinical care. Prescription pain medication will be given per clinical routine care. Study personnel will note how many pills were sent home.
• One week (6-9 days) after the cesarean delivery, participants will be contacted by phone or other preferred method and asked about pain score, somnolence scores, dizziness, nausea, depression, any problems they are experiencing, and asked how many pain pills are left in their prescriptions given when they went home. These data will be recorded.

An Edinburgh Depression Scale will also be administered upon consent, at 48 hours, and again at one week after delivery. If the scores meet the specified criteria, the provider will by notified or if the subject has already been discharged from the hospital, she will be given contact information for follow up care.

Enrollment: 13 patients

Sex: Female

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Pregnant women at least 18 years of age
• Singleton gestation
• Gestational age equal to or greater than 30 weeks
• Women undergoing a non-emergent (often scheduled) repeat cesarean delivery
• Spinal anesthesia utilized during cesarean

Exclusion criteria

• History of opiate abuse
• Women on opiates during pregnancy
• Women requiring treatment with magnesium sulfate postpartum
• Preexisting Fibromyalgia, chronic pain syndrome, or rheumatologic disorder
• General anesthesia required for cesarean
• Plans to breastfeed
• History of major depression or postpartum depression requiring medication
• Planned classical cesarean section

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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13 participants in 2 patient groups, including a placebo group

Gabapentin Administration

Active Comparator group

Description:

gabapentin 600mg orally every 8 hours x 48 hours

Treatment:

Drug: gabapentin

Placebo

Placebo Comparator group

Description:

Placebo , 1 tablet, orally every 8 hours x 48 hours

Treatment:

Drug: Placebo