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Sponsors and Collaborators: |
Rush University Medical Center Pfizer |
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Information provided by: | Rush University Medical Center |
ClinicalTrials.gov Identifier: | NCT00558753 |
The Department of Anesthesiology is conducting a clinical trial to evaluate if pregabalin given prior to and for several days after Total Knee Arthroplasty (TKA) will reduce the prevalence of Complex Regional Pain Syndrome (CRPS) at late postoperative times. The prevalence of complex regional pain syndrome (CRPS) following total knee arthroplasty (TKA) is 13% at 6 months post-surgery. CRPS is a painful debilitating condition, with 4 main classes of symptoms : sensory, including burning, allodynia, and hyperalgesia in the affected limb; vasomotor, including temperature asymmetry and skin color changes; edema and sudomotor, including sweating; and movement disorders and dystrophy, including decreased range of motion, motor dysfunction (weakness, tremor, dystonia) and changes in hair, nails or skin.
Condition | Intervention | Phase |
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CRPS |
Drug: pregabalin |
Phase II |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Parallel Assignment, Efficacy Study |
Official Title: | A Prospective, Randomized Controlled Trial on Perioperative Pregabalin to Reduce Late-Onset Complex Regional Pain Syndrome After Total Knee Arthroplasty |
Estimated Enrollment: | 300 |
Study Start Date: | April 2006 |
Study Completion Date: | June 2008 |
Primary Completion Date: | March 2008 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
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1: Placebo Comparator
Half of the patients will receive PO placebo for 14 days
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Drug: pregabalin
twice/day; 14 days
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2: Experimental
PO pregabalin 300 mg 2 hours prior to surgery, and 150 mg twice a day for 10 postoperative days. Pregabalin will be tapered to 75 mg twice daily between days 11 to 12 and then to 50 mg twice daily between days 13 to 14 post operatively and then stopped.
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Drug: pregabalin
twice/day; 14 days
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The Department of Anesthesiology is conducting a clinical trial to evaluate if pregabalin given prior to and for several days after Total Knee Arthroplasty (TKA) will reduce the prevalence of Complex Regional Pain Syndrome (CRPS) at late postoperative times. The prevalence of complex regional pain syndrome (CRPS) following total knee arthroplasty (TKA) is 13% at 6 months post-surgery. CRPS is a painful debilitating condition, with 4 main classes of symptoms : sensory, including burning, allodynia, and hyperalgesia in the affected limb; vasomotor, including temperature asymmetry and skin color changes; edema and sudomotor, including sweating; and movement disorders and dystrophy, including decreased range of motion, motor dysfunction (weakness, tremor, dystonia) and changes in hair, nails or skin. Gabapentin and the related more potent compound pregabalin have been shown to reduce postoperative pain in animal models. Pregabalin also reduces neuropathic pain in rats. In patients, gabapentin has been administered before surgery to treat postoperative pain. In addition, pregabalin has been given postoperatively to reduce dental pain after molar extraction. Gabapentin has been used for many years in patients with neuropathic pain, including reflex sympathetic dystrophy. More recently, pregabalin has also been shown to be efficacious in the treatment of neuropathic pain. However, no clinical study has investigated whether perioperative administration of gabapentin or pregabalin can reduce persistent long-term pain syndromes e.g. CRPS.Subjects between the ages of 21 and 80 will be recruited after obtaining an Informed Consent.
Ages Eligible for Study: | 21 Years to 80 Years |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
1.Younger than 21 years or older than 80 years. 2. American Society of Anesthesiologists physical status IV. 3. Prior usage of gabapentin (or pregabalin) will not be an exclusionary criterion; however, patients will have been withdrawn from these medications for at least 7 days before surgery. 4. Patients with a history of neuropathic pain conditions. 5. Patients who are currently enrolled in another investigational study. 6. Pre-existing heart conditions 7. Patients on thiazolidinedione class of anti-diabetic medications (eg. rosiglitazone, pioglitazone).
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Responsible Party: | Rush University Medical Center ( Asokumar Buvanendran, MD ) |
Study ID Numbers: | ABuv102007 |
Study First Received: | November 14, 2007 |
Last Updated: | November 25, 2008 |
ClinicalTrials.gov Identifier: | NCT00558753 History of Changes |
Health Authority: | United States: Food and Drug Administration |
Autonomic Nervous System Diseases Neuromuscular Diseases Complex Regional Pain Syndromes Peripheral Nervous System Diseases Pregabalin |
Pain Peripheral Nervous System Agents Analgesics Anticonvulsants |
Nervous System Diseases Physiological Effects of Drugs Pregabalin Pharmacologic Actions Autonomic Nervous System Diseases Complex Regional Pain Syndromes Neuromuscular Diseases |
Sensory System Agents Peripheral Nervous System Diseases Therapeutic Uses Analgesics Peripheral Nervous System Agents Central Nervous System Agents Anticonvulsants |