Clinical evaluation of a valveless non-absorber breathing system in spontaneously breathing canine patients.

摘要: A valveless non-absorber breathing system novel to veterinary anaesthesia is described. The performance of this was evaluated in 35 anaesthetised spontaneously dogs weighing between 2.1 and 56 kg. Fresh gas flows were reduced incrementally until rebreathing (defined as an increase end-inspired carbon dioxide tension above 0.2 per cent) started occur, measured by capnography. significant relationship (P < 0.0001) critical fresh flow bodyweight determined, a mean rate 145 +/- 21 ml/kg/minute derived for 15 10 kg or less (mean 6.7 2.6 kg) one 98 16 the remaining 20 11 greater 30.2 13.9 kg). requirements each group found differ significantly 0.0001), although correlation not = 0.054) less. It suggested that may prove economical useful addition systems currently used canine anaesthesia.