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Updated: Aug 19, 2026

Topical Airway Anesthesia for Awake-endoscopic Intubation Using the Spray-as-you-go Technique with High Oxygen Flow
Published on: January 13, 2017
Equipment for inhalation anesthesia
1Department of Surgical Sciences, University of Wisconsin, School of Veterinary Medicine, Madison.
Abstract:
Inhalation anesthesia has three requirements: delivery of oxygen, delivery of an appropriate concentration of a volatile anesthetic agent, and removal of carbon dioxide. Halothane and isoflurane are the most commonly used anesthetic agents. They are usually delivered with a semiclosed circle system using an out-of-the-circuit vaporizer. Carbon dioxide is eliminated by chemical absorption and by flow of excess oxygen and waste anesthetic agent through the pop-off valve. These gases should be scavenged to prevent room contamination. A variety of ancillary equipment is available to assist the anesthetist during the procedure.
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