title: Use of low-dose pregabalin in patients undergoing laparoscopic cholecystectomy.
abstract: BACKGROUND
  The objective of this study was to examine the effects of low-dose pregabalin on the analgesic efficacy, side-effects, and recovery profile in patients undergoing laparoscopic cholecystectomy.
  
  
  METHODS
  One hundred and sixty-two patients aged 18-65 yr, of ASA physical status I-III, undergoing elective outpatient laparoscopic cholecystectomy were recruited and randomized in this prospective, placebo-controlled, double-blind study to receive one of the following study medications orally: pregabalin 50 mg, pregabalin 75 mg, or placebo, 1 h before surgery and then every 12 h after operation for a total of three doses. Postoperative numeric pain scores, analgesic consumption, recovery score (QoR-40), and side-effects (opioid-related symptom distress scale) were assessed in the early postoperative period (every 15 min during the first hour, at 90, 120 min, 6, and 12 h) and at days 1, 2, and 7. Data were analysed using an intention-to-treat method.
  
  
  RESULTS
  Compared with the placebo group, the pain scores were lower in the pregabalin 75 mg group in the first 90 min after surgery (P<0.05). Pregabalin 50 mg resulted in pain reduction at 30 and 45 min (P<0.05) relative to placebo. The analgesic consumption, side-effects, and recovery scores were similar among the three groups.
  
  
  CONCLUSIONS
  Perioperative administration of pregabalin 75 mg provided limited analgesic benefit in the postoperative period. An updated meta-analysis confirms this finding (see Supplementary material).
authors.affiliation: Department of Anesthesia, Toronto Western Hospital, University of Toronto, 399 Bathurst Street, Toronto, Ontario, Canada. philip.peng@uhn.on.ca
authors.forename: P W H
authors.initials: PW
authors.lastname: Peng
authors.forename: C
authors.initials: C
authors.lastname: Li
authors.forename: E
authors.initials: E
authors.lastname: Farcas
authors.forename: A
authors.initials: A
authors.lastname: Haley
authors.forename: W
authors.initials: W
authors.lastname: Wong
authors.forename: J
authors.initials: J
authors.lastname: Bender
authors.forename: F
authors.initials: F
authors.lastname: Chung
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000556:Ambulatory Surgical Procedures; D018712:Analgesics, Non-Narcotic / Q000008:administration & dosage* / Q000009:adverse effects; D000701:Analgesics, Opioid / Q000008:administration & dosage; D000768:Anesthesia, General / Q000379:methods; D017081:Cholecystectomy, Laparoscopic; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D006801:Humans; D008875:Middle Aged; D010147:Pain Measurement / Q000379:methods; D010149:Postoperative Pain / Q000517:prevention & control*; D000069583:Pregabalin; D011292:Premedication / Q000379:methods; D011446:Prospective Studies; D005680:gamma-Aminobutyric Acid / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*
chemical_list: D018712:Analgesics, Non-Narcotic; D000701:Analgesics, Opioid; D000069583:Pregabalin; D005680:gamma-Aminobutyric Acid