A comparison of parecoxib and tramadol for the prevention of postanesthetic shivering

INTERVENTION: In group P, intravenous parecoxib (40mg) was given following the induction of anesthesia. In group T, intravenous tramadol (2mg/kg) was given following the induction of anesthesia. CONDITION: patients undergoing general anesthesia were recruited into the study PRIMARY OUTCOME: the overall incidence and grades of postoperative shivering INCLUSION CRITERIA: adult patients (ASA physical status I or II) scheduled for elective minor urological surgery under general anesthetic with no prior medication were included in this study