ABSTRACT
AIM:To evaluate the prophylactic effect of azasetron in different juncture injection on postoperative nausea and vomiting(PONV)during patients controlled intravenous ananlgesia(PCIA).METHODS:One hundred and twenty patients,scheduled for selective abdominal operations,were randomly divided into four groups:patients received an preoperative intravenous injection of 10 mg azasetron(Group A,n=30),patients received an intravenous injection of 10 mg azasetron during abdominal cavity(Group B,n=30),patients received an intravenous injection of 10 mg azasetron when the operation were finished(Group C,n=30),patients with no azasetron as control(Group D,n=30).The incidence rate and score of PONV,the visual analogue scales(VAS)and Ramsay scores were recorded at 4,8,12,24,48 h postoperatively.RESULTS:There was significant difference between the postoperative VAS during 12 to 48 h and that of 4 h postoperatively(?0.05).CONCLUSION:A preoperative intravenous injection of 10 mg azasetron can be used effectively to prevent PONV during PCIA.