The use of ultrasonic energy to vaporize anaesthetic liquids.
Ultrasonic energy, provided by a commercially available water vaporizer, was used to vaporize methoxyflurane, halothane, and chloroform. The vaporizer was placed directly in the respiratory line, and the anaesthetic liquid was vaporized one drop at a time. Anaesthesia was maintained for periods up to 6 hr in horses, ponies, calves, sheep, dogs, and one pig. This method of vaporizing liquids is applicable to a wide variety of anaesthetics. It is easily controlled, and the same vaporizer can be used with a wide range of sizes of subjects. The vaporizer can be placed directly in the respiratory circuit, and adds almost no resistance to breathing.
D000776:Anesthesiology / Q000295:instrumentation*; D000777:Anesthetics / Q000008:administration & dosage; D000818:Animals; D001835:Body Weight; D002417:Cattle; D002725:Chloroform; D004285:Dogs; D006221:Halothane; D006736:Horses; D008733:Methoxyflurane; D012756:Sheep; D013552:Swine; D014465:Ultrasonics; D014835:Volatilization
D000777:Anesthetics; D008733:Methoxyflurane; D002725:Chloroform; D006221:Halothane