 Analgesia and antiemetics Pain and fatigue were assessed preoperatively and immediately on return to the recovery room, and at 6, 12 and 24 h after the operation using a visual analogue scale VAS; 0 no painfatigue to 10 most severe painfatigue 7,15,16. Analgesia was given as intravenous sodium ketorolac 30 mg every 8 h. Intramuscular buprenorphine 0.15-0.30 mcg was used as a backup analgesic medication. The incidence of PONV was recorded immediately on return to the recovery room and at 6, 12 and 24 h, after the operation, using a four-point ordinal scale 0 none, 1 nausea, 2 nausea with request for antiemetic, 3 vomiting. Intravenous ondansetron 4-8 mg was given for antiemetic treatment on demand. 