Effects of Pregabalin on Pain After Total Knee Arthroplasty
| Status: | Recruiting |
|---|---|
| Healthy: | No |
| Age Range: | 18 - 80 |
| Updated: | 3/30/2013 |
| Start Date: | May 2011 |
| Contact: | Carey Ford, B.A. |
| Email: | FordC@hss.edu |
| Phone: | (212) 774 2602 |
Effects of Pregabalin on Pain After Total Knee Arthroplasty: A Randomized, Controlled, Double-Blind Trial
Total knee arthroplasty can cause severe postoperative pain, and patients typically receive
oral opioid analgesics for over 2 weeks. Side effects of pain management may impair
participation in physical therapy and diminish patient satisfaction. Anecdotally, it seems
that pregabalin is very helpful to patients after total knee arthroplasty. However,
pregabalin can have side effects. It is not clear how much pregabalin to prescribe. Low
doses may not be effective, but use of high doses may increase the incidence and severity of
side effects.The purpose of this study is to determine which dosage of pregabalin is the
most effective at reducing pain after knee surgery.
Inclusion Criteria:
- Patients with osteoarthritis scheduled for primary tricompartmental total knee
arthroplasty with a participating surgeon
- Age 18 to 80 years old
- Planned use of regional anesthesia
- Ability to follow study protocol
- English speaking (primary outcome obtained via telephone call and secondary outcomes
include questionnaires validated in English only)
- Patients planning on being discharged home or to a rehabilitation center that has
agreed to participate
Exclusion Criteria:
- Patients younger than 18 years old and older than 80
- Patients intending to receive general anesthesia
- Allergy or intolerance to one of the study medications
- Patients with an ASA of IV
- Patients with hepatic (liver) failure
- Patients with chronic renal (kidney) failure (Defined as estimated creatinine
clearance < 30 mL/min, based on recommendation that total daily pregabalin dose be
reduced to 150 mg with Clcr < 30 mL/min, CLcr=[(140-age (years)] x weight (kg)x0.85
(for female patients)/[72xserum creatinine (mg/dL)])
- Patients with difficult to manage diabetes mellitus, including insulin-dependence
- Chronic gabapentin/pregabalin use (regular use for longer than 3 months)
- Chronic opioid use (taking opioids for longer than 3 months)
- Patients with major prior ipsilateral open knee surgery.
- Chronic neurontin/lyrica use
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