twenty patients undergoing elective cholecystectomy were prospectively randomised to receive either intrapleural ( bolus 20 ml followed by 10 ml/h ) or thoracic epidural ( bolus 9 ml followed by 5 ml/h ) bupivacaine 0.5 % for 8 h postoperatively to assess the effect of these two techniques on pain , pulmonary function and the surgical stress response .
C0006400
bupivacaine
C0030193
pain