• C C Liaw, C H Wang, H K Chang, C Y Kao, and J S Huang.
• Department of Internal Medicine, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C. el02309@adm.cgmh.com.tw
• Chang Gung Med J. 2000 Jul 1; 23 (7): 413-9.

BackgroundWe conducted a prospective study to evaluate the anti-emetic effect of cisplatin-induced nausea and vomiting with intravenous (i.v.) ondansetron plus i.v. dexamethasone.MethodsOne hundred forty-six chemotherapy (CT)-naive patients were enrolled in the study. They were scheduled to receive cisplatin 50 to 100 mg/m2 (mean, 53 mg/m2) on day 1 followed immediately by continuous infusion of 5-fluorouracil with or without other CT agents on the subsequent days. Three 8 mg doses of ondansetron i.v. were given at 4-hour intervals plus 20 mg dexamethasone i.v. infusions from the start of CT, followed by 5 mg dexamethasone i.v. every 12 hours, and the administration of dexamethasone was discontinued after the completion of CT.ResultsThe rates of complete protection from acute and delayed vomiting/nausea obtained in these patients were 97.3%/93.2% and 71.2%/60.3%, respectively. The rates of complete protection from both acute and delayed nausea were 70.5% and 58.9%, respectively. By comparison, the total control rate of vomiting was less in female patients than in male patients (p = 0.017), and the total control rate of nausea was lower in the age group less than 50 years (p = 0.045). The time from the start of CT to the onset of nausea appeared to be earlier than that for vomiting (log-rank test, p = 0.045). Adverse events tended to be minor, with constipation and hiccups as the most common.ConclusionThese results indicate that i.v. ondansetron plus i.v. dexamethasone is a feasible anti-emetic therapy in an inpatient setting. I.v. ondansetron plus i.v. dexamethasone is highly effective in preventing acute cisplatin-induced nausea and vomiting.

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