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Perioperative pregabalin improves pain and functional outcomes 3 months after lumbar discectomy.

Author(s): Burke SM, Shorten GD

Affiliation(s): Department of Anaesthesia and Intensive Care Medicine, Cork University Hospital, Wilton, Cork, Ireland. siunburke@hotmail.com

Publication date & source: 2010-04-01, Anesth Analg., 110(4):1180-5. Epub 2010 Jan 26.

Publication type: Randomized Controlled Trial; Research Support, Non-U.S. Gov't

BACKGROUND: Patient outcome after lumbar discectomy for radicular low back pain is variable and the benefit is inconsistent. Many patients continue to experience pain 3 months after surgery. Pregabalin, a membrane stabilizer, may decrease perioperative central sensitization and subsequent persistent pain. METHODS: Forty patients undergoing lumbar discectomy were randomly allocated to receive either pregabalin (300 mg at 90 minutes preoperatively and 150 mg at 12 and 24 hours postoperatively) or placebo at corresponding times in a double-blinded manner. Our primary outcome was the change in the present pain intensity (PPI) (visual analog scale [VAS], 0-100 mm [PPI-VAS, McGill Pain Questionnaire]) from preoperatively to 3 months postoperatively. RESULTS: The decrease in PPI-VAS score at 3 months was greater in patients who received pregabalin (37.6 +/- 19.6 mm) (mean +/- sd) than those who received placebo (25.3 +/- 21.9 mm) (P = 0.08). The Roland Morris disability score at 3 months was less in patients who received pregabalin (2.7 +/- 2.4) than in those who received placebo (5.6 +/- 4.8) (P = 0.032). Pregabalin administration was associated with greater pain tolerance thresholds in both lower limbs compared with placebo at 24 hours postoperatively. CONCLUSION: Perioperative pregabalin administration is associated with less pain intensity and improved functional outcomes 3 months after lumbar discectomy.

Page last updated: 2010-10-05

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