we studied 24 patients undergoing elective cholecystectomy and randomized to either conventional postoperative pain treatment , with intermittent nicomorphine ( 10 to 15 mg ) and acetaminophen ( 1 gm ) on request , or thoracic epidural analgesia with plain bupivacaine for 48 hours and epidural morphine 4 mg every 8 hours for 96 hours plus systemic indomethacin 100 mg every 8 hours for 96 hours .
C0030201
postoperative pain
C0006400
bupivacaine