Clinical use of dexmedetomidine as premedicant in cats undergoing propofol–sevoflurane anaesthesia

作者：Gonçalo Mendes, A. L. Selmi, Glenda Ramalho Barbudo-Selmi, B. T. Lins, Juliana Peboni Figueiredo · 发表于：Journal of Feline Medicine and Surgery · 年份：2003 · DOI：10.1016/s1098-612x(03)00053-6 · 被引用次数：36 · 研究领域：Veterinary Pharmacology and Anesthesia、Anesthesia and Sedative Agents、Anesthesia and Pain Management

The purpose of this report was to evaluate the cardiorespiratory effects and efficacy of dexmedetomidine as a premedicant agent in cats undergoing ovariohysterectomy anaesthetized with propofol-sevoflurane. Cats were randomly divided into two groups of eight animals each. Dexmedetomidine (0.01 mg/kg) or 0.9% saline was administered intravenously (D and S, respectively). After 5 min, propofol was administered intravenously and anaesthesia was maintained with sevoflurane. Heart and respiratory rates, arterial blood pressure, oxygen saturation, rectal temperature and the amount of propofol needed for induction were measured. Premedication with dexmedetomidine reduced the requirement of propofol (6.7+/-3.8 mg/kg), but induced bradycardia, compared with the administration of saline (15.1+/-5.1 mg/kg). Recovery quality was significantly better in D but no significant difference in time to return of swallowing reflex was observed between groups (D=2.5+/-0.5 min; S=3.2+/-1.8 min). In conclusion, dexmedetomidine is a safe and effective agent for premedication in cats undergoing propofol-sevoflurane anaesthesia with minimal adverse effects.