Document Classification

Section Type: METHODS

Text: Ninety ASA I-II females, 18-65 yr, undergoing general anaesthesia for major gynaecological surgery, with standardized postoperative analgesia (intrathecal 0. 2 mg plus i. v. PCA morphine), were randomly assigned to receive : ondansetron 4 mg plus droperidol 1. 25 mg after induction and droperidol 1. 25 mg 12 h later (Group 1) ; dexamethasone 8 mg plus droperidol 1. 25 mg after induction and droperidol 1. 25 mg 12 h later (Group 2) ; ondansetron 4 mg plus dexamethasone 8 mg after induction and placebo 12 h later (Group 3).