256. Multimodal analgesia for pain control after laparoscopic cholecystectomy

Methods: A double-blind, randomised trial was conducted on 120 patients scheduled to undergo elective knee arthroscopy. Patients were homogenous regarding demographic data and ASA status. Procedures included were diagnostic arthroscopies. All cases were treated by the same surgeon,under general anesthesia,using the same procedure. Patients were randomly divided into 3 groups. The A group received 2% ropivocaine 20 ml, the B group received 2% ropivocaine 10 ml plus 10 mg morphine in 10 ml saline and group C received 20 ml of saline solution. A blind observer assessed the patients postoperative pain using 10-cm visual analogue scale ( VAS ), ranging from no pain (0) to unbearable pain (10) and verbal pain score. Scores were taken at 0,1,2,4,8,12,24 hours postoperative. Codeine was given when patients complained for pain. For statistical analysis we used ANOVA or Krusccal-Wallis and post-hoc Bonferroni comparisons.