Betamethasone-dixyrazine versus betamethasone-metoclopramide as antiemetic treatment of cisplatin-doxorubicin-induced nausea in ovarian carcinoma patients.

In a prospective and randomized pilot study two antiemetic regimens comprising dixyrazine (240 mg) and metoclopramide (10 mg/kg) in high doses and given by continuous i.v. infusion were compared as means of preventing cisplatin-doxorubicin-induced nausead and vomiting. Twenty chemotherapy-naive women with the diagnosis of ovarian carcinoma stages III-IV (FIGO) were included in the study. Medium doses (50 mg/m2) of cisplatin and doxorubicin were used. The antiemetic drugs (the above-mentioned ones plus betamethasone 20 mg, and biperiden 5 mg) were administered by small portable infusion pumps during 24 hours. The effects and adverse reactions were evaluated during the course of chemotherapy and the first week thereafter. Complete protection from nausea during the first 24 hours was achieved in 80% by the metoclopramide cocktail and in 50% by the dixyrazine combination. During days 2-7 there were no significant differences between the two regimens. Vomiting was not satisfactorily prevented by either treatment. Sedation was significantly more common after dixyrazine than after metoclopramide but other recorded side effects were similar for the two antiemetic regimens. Serum concentrations of dixyrazine and metoclopramide were determined.