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  • Title: A randomized double-blinded comparison of metoclopramide, ondansetron and cyclizine in day-case laparoscopy.
    Author: Watts SA.
    Journal: Anaesth Intensive Care; 1996 Oct; 24(5):546-51. PubMed ID: 8909663.
    Abstract:
    This study determined the overall incidence of postoperative nausea and vomiting (PONV) in 38 patients undergoing laparoscopic gynaecological procedures who received a standardized propofol/isoflurane anaesthetic but no preoperative antiemetic. A further 166 patients similarly anaesthetized were then randomly allocated to receive either metoclopramide 10 mg. ondansetron 4 mg, or cyclizine 50 mg as an intravenous antiemetic immediately preinduction. Overall incidence of PONV was determined for all groups and the relative efficacy of the three antiemetic agents assessed. Fifty per cent of patients in the initial group (no antiemetic) reported significant nausea and/or vomiting up to 24 hours postoperatively. The incidence of PONV in the metoclopramide group was 24%, in the ondansetron group 20%, and in the cyclizine group 51%. There was no detectable difference in relative efficacy between ondansetron 4 mg and metoclopramide 10 mg. The incidence of PONV in the group who received cyclizine was similar to that found in the pilot group who received no PONV prophylaxis. Both metoclopramide and ondansetron may potentially decrease the incidence of PONV following gynaecologic laparoscopy by up to 50% when administered intravenously prior to a propofol/isoflurane anaesthetic.
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