Prospective, controlled, blinded, randomized crossover trial evaluating the effect of maropitant versus ondansetron on inhibiting tranexamic acid-evoked emesis

Journal of Veterinary Emergency and Critical Care
Marta E KantykaAnnette P N Kutter

Abstract

To evaluate the incidence of tranexamic acid (TXA)-induced nausea and vomiting after the prophylactic use of 2 antiemetics, ondansetron and maropitant, compared with saline. Prospective, blinded, placebo-controlled, randomized, crossover study. University research facility. Eight adult, purpose-bred Beagles. Dogs received 3 treatments on 3 occasions with a 3-week washout period. Either maropitant (1 mg/kg), ondansetron (0.2 mg/kg), or saline solution was given intravenously in equal volumes, followed 10 minutes later by 50 mg/kg IV TXA. A blinded observer evaluated the dogs for signs of vomiting and nausea for 30 minutes. The severity of nausea was assessed with a visual analog scale (VAS) and recorded at baseline before TXA, and at the end of 3 observational periods: 0-5, 5-15, and 15-30 minutes after TXA. A generalized linear mixed effect model was used to assess for group and period effects. Statistical significance was set at P < 0.05 . None of the dogs vomited after maropitant. Emesis occurred in 5 out of 8 dogs (62.5%), a median (range) of 1 time (1-2) after ondansetron and 1 time (1-3) after saline. There was a significant effect on vomiting of maropitant against saline (P < 0.0001) but not for ondansetron against sa...Continue Reading

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