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Anaesthesia. 2002 Jan;57(1):61-5.

Comparison of cyclizine and ondansetron for the prevention of postoperative nausea and vomiting in laparoscopic day-case gynaecological surgery.

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Anaesthetics, Ninewells Hospital, Dundee DD1 9SY, UK.


Seventy-four patients undergoing laparoscopic gynaecological surgery were randomly allocated to two groups receiving cyclizine 50 mg or ondansetron 4 mg at induction of anaesthesia. Anaesthetic and postoperative analgesia regimens were standardised. Approximately half of the patients in each group experienced some degree of postoperative nausea and vomiting (cyclizine, 56%; ondansetron, 54%). There was no difference between groups in respect of pre- and postdischarge incidence. Mean (SD) time to eye opening was significantly prolonged in the cyclizine group [10 (4) min vs. 8 (2) min; p < 0.001], but this had no influence on discharge times. Cyclizine and ondansetron appear equally effective in preventing postoperative nausea and vomiting but the 10-fold price differential favours cyclizine.

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