Plasma Gabapentin Concentration During and Following Cardiac Bypass

December 7, 2009 updated by: Queen's University

Preemptive Gabapentin Administration and Perioperative Plasma Concentrations With Cardiac Bypass

This open label investigation is to determine whether cardiopulmonary bypass affects plasma gabapentin concentration after preoperative administration in the setting of cardiac bypass surgery. Following signed informed consent, 16 patients scheduled for cardiac bypass surgery will be given gabapentin (600mg, oral) 1 hour prior to surgery, 1 hour following extubation and then every 8 hours for a total of 4 doses. Plasma gabapentin levels will be measured prior to induction, prior to bypass, 10 min into the bypass procedure, 10 minutes before separation from bypass, 30 minutes following bypass and then before and 2 hours following each of the next 3 doses of gabapentin. Pain scores, sedation scores, side effects and morphine equivalents will be documented for one day following surgery.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

16

Phase

  • 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 Locations

  • Canada
    • Ontario
      • Kingston, Ontario, Canada, K 7L 2V7
        • Kingston General Hospital

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

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • scheduled for cardiac bypass surgery involving median sternotomy and CPB
  • signed informed consent

Exclusion Criteria:

  • history of chronic pain
  • regular opioid consumption
  • regular anticonvulsant consumption
  • regular gabapentin or pregabalin use
  • recent congestive heart failure
  • ejection fraction <35%
  • chronic pulmonary disease
  • liver disease
  • renal insufficiency (preoperative creatinine > 140umol/L
  • history of adverse reaction to acetaminophen

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: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: gabapentin
patients scheduled for cardiac bypass surgery will be administered gabapentin (600mg, orally). Blood will be drawn and plasma gabapentin levels determined 1 hour before surgery, 10 minutes into surgery, 10 minutes before separation from bypass, 30 minutes following bypass, and then before and 2 hours after each dose of gabapentin.
Drug: Gabapentin
Subjects will be administered gabapentin (600 mg, orally) 1 hour prior to cardiac bypass surgery, 1 hour following extubation, then every 8 hours for a total of 4 doses.
Other Names:
  • neurontin

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
plasma concentrations of gabapentin
Time Frame: 1 hour before surgery, 10 min following initiation of bypass, 10 min before separation from bypass, 30 min following bypass, and then before and 2 hours following each of the next 3 doses of gabapentin
1 hour before surgery, 10 min following initiation of bypass, 10 min before separation from bypass, 30 min following bypass, and then before and 2 hours following each of the next 3 doses of gabapentin

Collaborators and Investigators

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

Sponsor

Queen's University

Investigators

  • Principal Investigator: Joel Parlow, MD, Queen's University and Kingston General Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

May 1, 2007

Primary Completion (ACTUAL)

September 1, 2007

Study Completion (ACTUAL)

September 1, 2007

Study Registration Dates

First Submitted

November 27, 2009

First Submitted That Met QC Criteria

November 27, 2009

First Posted (ESTIMATE)

December 1, 2009

Study Record Updates

Last Update Posted (ESTIMATE)

December 8, 2009

Last Update Submitted That Met QC Criteria

December 7, 2009

Last Verified

December 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • ANAE-128-06

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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