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  • Title: [Prevention of postoperative nausea and vomiting in gynecologic surgery with 3 fixed doses of metoclopramide, droperidol or placebo].
    Author: Delás Ramírez FJ, Ros Mora J, Ledesma Vázquez M, López Rodríguez M, Fernández Martínez MA, Villalonga Morales A.
    Journal: Rev Esp Anestesiol Reanim; 2001 Feb; 48(2):65-8. PubMed ID: 11257953.
    Abstract:
    OBJECTIVES: To compare the efficacy and side effects of three doses of metoclopramide, droperidol or placebo administered every 8 h to prevent nausea and vomiting during the first 24 h after surgery. MATERIAL AND METHODS: Prospective, double blind study of 104 patients scheduled for major intraabdominal gynecological surgery under general anesthesia. The patients were randomly assigned to three groups: group M received 10 mg of metoclopramide, group D received 1.25 mg of droperidol and group P received a saline solution. The patients were premedicated with oral diazepam. All patients were anesthetized using similar techniques, with fentanyl, thiopental, vecuronium, oxygen/nitrogen protoxide and isoflurane. Muscle relaxation was reversed with atropine and neostigmine. Postoperative analgesia was given with endovenous morphine and metamizol. Immediately after surgery each patient received an endovenous dose of the assigned antiemetic drug. Patients were monitored for 24 h and observations were recorded every hour on the following scale: 0, for no emetic symptoms, 1 for nausea and 2 for vomiting. RESULTS: Fifteen patients (42.9%) in group D, 21 (60% in group M and 19 (54.3%) in group P experienced nausea during the 24 h after surgery, with no significant differences. However, the incidence of vomiting was significantly lower in group D, with 7 patients (20%) vomiting in group D versus 11 patients (31.43%) in group M and 17 (50%) in group P. Side effects were mild and required no treatment. CONCLUSIONS: Droperidol at a dose of 1.25 mg every 8 h is effective and safe for preventing postoperative nausea and vomiting and has minimal side effects. Metoclopramide at a dose of 10 mg every 8 h, in our study, was no better for the same purpose than placebo.
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