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Comparison of ondansetron and droperidol in reducing postoperative nausea and vomiting associated with patient-controlled analgesia



Comparison of ondansetron and droperidol in reducing postoperative nausea and vomiting associated with patient-controlled analgesia



Anaesthesia 50(12): 1086-1088



In a randomised, placebo-controlled trial we have compared the efficacy of ondansetron and droperidol in reducing postoperative nausea and vomiting associated with patient-controlled analgesia after orthopaedic surgery. One hundred and forty five patients, ASA 1 and 2, undergoing major orthopaedic surgery were anaesthetised using a standardised technique. They were randomly allocated to receive patient-controlled analgesia as morphine 1 mg.ml-1 alone; morphine as before plus a single dose of 1.25 mg droperidol together with 0.083 mg.ml-1 in the infusion syringe; or morphine as before plus 4 mg ondansetron and 0.13 mg.ml-1 in the syringe. The patient-controlled analgesia bolus dose was set at 1 ml with a 5 min lockout and a 4 h maximum dose of 30 mg morphine. There was no background infusion. The occurrence of nausea, vomiting and sedation was assessed every 4 h. The incidence of vomiting decreased from 59% in the morphine-only group to 35% and 14% in the droperidol (p < 0.05) and ondansetron groups (p < 0.001) respectively. The number of patients suffering from nausea alone was not significantly different between the three groups, although those in the ondansetron group experienced less severe nausea (p < 0.05) when using a two point scale. The droperidol group had significantly higher sedation scores than the other two groups (p < 0.005). We conclude that ondansetron is superior to droperidol when used with patient-controlled analgesia and causes less sedation.

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Accession: 045594632

Download citation: RISBibTeXText

PMID: 8546294

DOI: 10.1111/j.1365-2044.1995.tb05958.x


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