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Ondansetron and metoclopramide fail to prevent vomiting secondary to ultra-high-dose cisplatin-carboplatin chemotherapy.

Author(s): Fanning J, Hilgers RD

Affiliation(s): Division of Gynecologic Oncology, Southern Illinois University School of Medicine, Springfield.

Publication date & source: 1994-04, Obstet Gynecol., 83(4):601-4.

Publication type: Clinical Trial; Randomized Controlled Trial

OBJECTIVE: To determine the severity of emesis caused by ultra-high-dose cisplatin-carboplatin chemotherapy and to compare the antiemetic efficacy of an ondansetron regimen and a metoclopramide regimen. METHODS: Forty consecutive patients with stage III or IV epithelial ovarian cancer or advanced or recurrent endometrial cancer were treated with ultra-high-dose cisplatin-carboplatin chemotherapy. No patient had received prior chemotherapy. Chemotherapy consisted of intravenous (IV) cisplatin 70 mg/m2 and IV carboplatin 100 mg/m2 administered on days 1 and 8 every 28 days for five cycles, representing a total monthly organoplatin dose of 207 mg/m2. Patients were randomized to receive metoclopramide, diphenhydramine, prochlorperazine, and lorazepam; or ondansetron, dexamethasone, prochlorperazine, and lorazepam. Patients were blinded and there was no crossover. The metoclopramide dose was 2 mg/kg IV every 2 hours x 3, and the ondansetron dose was 0.15 mg/kg IV every 4 hours x 3. RESULTS: All 40 patients developed vomiting; 21 (52%) developed severe vomiting and seven (17%) required home IV therapy (grade 4). Eight patients (40%) receiving the metoclopramide regimen developed severe vomiting, compared to 13 (65%) in the ondansetron group (P = .50). Two patients (10%) in the metoclopramide group developed grade 4 vomiting, compared to five (25%) in the ondansetron group (P = .45). Except for sedation and amnesia, there were no significant side effects associated with either regimen. CONCLUSION: Neither regimen was effective in preventing high-dose cisplatin-carboplatin-induced emesis, and the ondansetron regimen did not appear to be superior.

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