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Effect of Spinal Ketorolac After Acute Opioid Exposure
This study is currently recruiting participants.
Verified by Wake Forest University, January 2009
Sponsors and Collaborators: Wake Forest University
National Institute of General Medical Sciences (NIGMS)
Information provided by: Wake Forest University
ClinicalTrials.gov Identifier: NCT00693160
  Purpose

This research study is being done because pain is a significant problem for patients with a variety of medical problems and following surgery or traumatic injury. Currently available pain medications may not treat all types of pain or may treat pain only at doses that produce side effects and complications. The medication in this study may have a role in better treatment of pain. The goals of this study are to see if a dose of ketorolac (non-narcotic, pain reliever), given into the fluid in your back near the spine has any effect on pain or discomfort in the skin sensation that will take place after applying capsaicin (chili pepper) cream. ¬The sunburn-like sensation that people experience after having capsaicin cream applied is similar to, but much milder than, the pain that some people have after surgery and after certain types of nerve injuries. This study will test the effects of combining two medications that are often given together to control postoperative pain or pain from a nerve injury. The investigators are especially interested in answering two questions about the effects of ketorolac (non-narcotic pain reliever) and remifentanil (intravenous [IV] narcotic painkiller):

  1. How much does remifentanil (narcotic painkiller) affect the sunburn-like painful area on your skin, which develops after applying capsaicin cream?
  2. What pain relieving effects does spinal ketorolac have when given with IV remifentanil?

Condition Intervention Phase
Healthy
Drug: ketorolac
Drug: placebo
Drug: remifentanil
Phase II

Drug Information available for: Ketorolac Ketorolac tromethamine Remifentanil Remifentanil hydrochloride
U.S. FDA Resources
Study Type: Interventional
Study Design: Basic Science, Randomized, Double Blind (Subject, Investigator, Outcomes Assessor), Parallel Assignment, Efficacy Study
Official Title: Effect of Intrathecal Ketorolac on Mechanical Hypersensitivity Following Acute Opioid Exposure

Further study details as provided by Wake Forest University:

Primary Outcome Measures:
  • primary outcome measure is the area of hyperalgesia [ Time Frame: 24 hours ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • secondary outcome measure is the CSF PGE2 concentration after stopping remifentanil [ Time Frame: 2.5 hours ] [ Designated as safety issue: No ]

Estimated Enrollment: 50
Study Start Date: December 2007
Estimated Study Completion Date: April 2010
Estimated Primary Completion Date: January 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
1: Active Comparator
subject will receive a single intrathecal injection of ketorolac 2 mg
Drug: ketorolac
single intrathecal injection of ketorolac 2 mg
Drug: remifentanil
narcotic comparator will be given to all subjects
Drug: remifentanil
All subjects will receive a remifentanil infusion
2: Placebo Comparator
subject will receive a single intrathecal injection of placebo (preservative-free normal saline)
Drug: placebo
subject will receive a placebo (preservative free normal saline) spinal injection
Drug: remifentanil
All subjects will receive a remifentanil infusion

Detailed Description:

Intravenous (IV) remifentanil stimulates spinal COX activity, leading to increased CSF PGE2 concentrations and areas of capsaicin-induced mechanical hypersensitivity after remifentanil infusion, and these effects will be blocked by intrathecal ketorolac.

Areas of mechanical hyperalgesia and allodynia will be established by topical capsaicin + intermittent heat in healthy volunteers, who will be randomized to receive intrathecal saline or ketorolac during remifentanil infusion, with primary outcome measure area of hyperalgesia and secondary outcome measure CSF PGE2 concentration after stopping remifentanil.

  Eligibility

Ages Eligible for Study:   18 Years to 55 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • healthy
  • ASA I or II classification
  • between the ages of 18-55
  • weigh less than 250 pounds
  • without chronic pain

Exclusion Criteria:

  • taking analgesics in the last 2 weeks
  • positive urine drug screen
  • pregnancy
  • currently taking any prescription antidepressants or other medications that are mood altering
  • liver or kidney disease
  • stomach ulcers
  • allergies to ketorolac, lidocaine, or capsaicin cream
  • lung disease (COPD)
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00693160

Contacts
Contact: Regina Currry, RN, CCRC 336-716-4294 recurry@wfubmc.edu

Locations
United States, North Carolina
Wake Forest University Health Sciences Recruiting
Winston-Salem, North Carolina, United States, 27157
Principal Investigator: James C. Eisenach, M.D.            
Sub-Investigator: Chuanyao Tong, M.D.            
Sponsors and Collaborators
Wake Forest University
Investigators
Principal Investigator: James C. Eisenach, M.D. Wake Forest University
  More Information

Responsible Party: Wake Forest University Health Sciences ( James C. Eisenach, M.D. )
Study ID Numbers: IRB00002457, GM48085
Study First Received: February 15, 2008
Last Updated: January 6, 2009
ClinicalTrials.gov Identifier: NCT00693160  
Health Authority: United States: Food and Drug Administration

Keywords provided by Wake Forest University:
healthy volunteers
analgesia
pain
Healthy subjects

Study placed in the following topic categories:
Hypersensitivity
Remifentanil
Ketorolac
Pain
Healthy
Ketorolac Tromethamine

Additional relevant MeSH terms:
Anesthetics, Intravenous
Anti-Inflammatory Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Cyclooxygenase Inhibitors
Anesthetics
Central Nervous System Depressants
Enzyme Inhibitors
Pharmacologic Actions
Anesthetics, General
Analgesics, Non-Narcotic
Sensory System Agents
Therapeutic Uses
Hypnotics and Sedatives
Anti-Inflammatory Agents, Non-Steroidal
Analgesics
Peripheral Nervous System Agents
Antirheumatic Agents
Central Nervous System Agents
Analgesics, Opioid

ClinicalTrials.gov processed this record on January 16, 2009