Article Text

Total intravenous anaesthesia with propofol or propofol/ketamine in spontaneously breathing dogs premedicated with medetomidine
  1. A. Seliškar, DVM, PhD1,
  2. A. Nemec, BSc, PhD1,
  3. T. Roškar, DVM1 and
  4. J. Butinar, DVM, PhD1
  1. 1 Clinic for Small animal Medicine and Surgery Veterinary faculty, University of Ljubljana, Gerbiceva 60,1000 Ljubljana, Slovenia


The cardiorespiratory parameters, the depth of anaesthesia and the quality of recovery were evaluated in six spontaneously breathing dogs that had been premedicated with medetomidine (40 μg/kg, supplemented with 20 μg/kg an hour later), administered with either propofol (1 mg/kg followed by 0·15 mg/kg/minute, intravenously), or with ketamine (1 mg/kg followed by 2 mg/kg/hour, intravenously) and propofol (0·5 mg/kg followed by 0·075 mg/kg/minute, intravenously). The dogs' heart rate and mean arterial blood pressure were higher and their minute volume of respiration and temperature were lower when they were anaesthetised with propofol plus ketamine, and a progressive hypercapnia leading to respiratory acidosis was more pronounced. When the dogs were anaesthetised with propofol/ketamine they recovered more quickly, but suffered some unwanted side effects. When the dogs were anaesthetised with propofol alone they recovered more slowly but uneventfully.

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