Granisetron reduces postoperative nausea and vomiting throughout menstrual cyclePurpose: The incidence of postoperative nausea and vomiting (PONV) is influenced by menstruation. This study was undertaken to assess the efficacy of granisetron, a selective 5-hydroxytryptamine type 3 receptor antagonist, for preventing PONV in patients during two different phases of menstrual cycle. Methods: One hundred twenty female patients undergoing general anaesthesia for major gynaecological surgery were divided according to the phase of menstrual cycle into two groups: day one to eight (menstrual) and day nine to end of the cycle (non-menstrual) groups. In a randomized, double-blind manner, the patients received placebo (saline) or 40/./g.kg -I granisetron iv immediately before the induction of anaesthesia. All patients received a standardized general and epidural anaesthesia and epidural morphine plus bupivacaine for postoperative analgesia. The incidence of PONV and other adverse events was recorded dunng the first 24 hr after anaesthesia.Results: The treatment groups were similar with respect to patient demographics, types of surgery, anaesthetics administered and analgesics used postoperatively. The incidence of PONV was 72% and 32% in patients during menstruation receiving placebo or granisetron (P < 0.05), and was 46% and 2096 in those during non-menstruation, respectively (P < 0.05). No differences in the incidence of other adverse events were observed among the groups.Conclusion: Granisetron was effective in reducing the incidence of PONV in both phases of the menstrual cycle studied.
Objectif: Les menstruations influencent I'incidence des nausEes et des vomissements postop&atoires (NVPO).Cette Etude visait ~ Evaluer I'efficacitE du granisetron, un antagoniste du r&epteur de la 5-hydroxytryptamine de type 3, administrE pour la prevention des NVPO pendant [es diffErentes phases du cycle menstruel.M&hodes : Cent vingt patientes programmEes pour une chirurgie gynEcologique majeure sous anesth&ie gEn&ale ont EtE rEparties en deux groupes dEterminEs par la phase de leur cycle menstruel: du premier au huiti~me jour (,~menstruel~) et du neuvi~me jour ~ la fin du cycle (anon menstruel~). En double aveugle et alEatoirement, les patientes ont re~u un placebo (du sol. phys.) ou 40/ag'kg -t de granisetron iv immEdiatement avant I'induction de I'anesth&ie. Toutes les patientes ont re~:u une anesthEsie gEn&ale ou Epidurale standard et de la morphine Epidurale avec ajout de bupivaca'ine pour ranalgEsie postol~ratoire. ILincidence des NVPO et des autres incidents a ErE enregistrEe pendant 24 h aprEs I'anesthEsie.REsultats : Les deux groupes Etaient identiques sur le plan de la d~mographie, du type de chirurgie, de I'anesth~sie et des analg&iques administrEs en postop&atoire. ILincidence des NVPO a ErE respectivement de 72% et de 32% darts le groupe menstruel recevant le placebo et le granisetron (P < 0,05) et de 46% et de 20~ darts le groupe non menstruel (P < 0,05). Eincidence des complications a ErE la mEme dans les deux groupes.C...