title: A vaporizing system for programmed anaesthesia.
abstract: A vaporizing system for closed circuit "programmed" anaesthesia is described. Despite its location within the circuit, the vaporizer controls directly the input of volatile anaesthetic agents irrespective of fluctuations in ventilation of the anaesthetized subject. It is interfaced easily with electronic controllers and has an accuracy approaching 1.0% under laboratory conditions. During experimental anaesthesia, it maintained stable end-tidial concentrations of halothane at 1.2 MAC (the intended value) despite wide variations in ventilation.
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D000818:Animals; D003201:Computers; D004285:Dogs; D006221:Halothane; D013997:Time Factors; D014835:Volatilization
chemical_list: D006221:Halothane