<qa>  What was the incidence of PONV recorded on return to the recovery room?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. 