title: Anesthesia systems. Part 1: Operating principles of fundamental components.
abstract: This article is the first in a two-part series on the operation of principal components within Narkomed anesthesia systems. Part 1 illustrates the structure and function of various sections of the machine's internal piping, including components of the pneumatic circuit and the oxygen flush valve, and several safety features, such as the oxygen supply pressure alarm, oxygen failure protection device, and oxygen ratio monitor controller. The article progresses to other basic components of the anesthesia system. Topics include the function of the absorber unit and the flow of gas through it, the principle of operation of the positive end-expiratory pressure valve, the function and mechanics of the adjustable pressure limiter valve, and the open reservoir scavenger system. Part 1 is a valuable tool in understanding the function and pneumatics of the primary components of the anesthesia system.
authors.affiliation: Department of Education, North American Dräger, Telford, PA 18969.
authors.forename: J H
authors.initials: JH
authors.lastname: Cicman
authors.forename: M I
authors.initials: MI
authors.lastname: Jacoby
authors.forename: V F
authors.initials: VF
authors.lastname: Skibo
authors.forename: J M
authors.initials: JM
authors.lastname: Yoder
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D004867:Equipment Design; D004868:Equipment Failure; D004869:Equipment Safety; D006801:Humans; D016343:Monitoring, Intraoperative / Q000295:instrumentation*; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation; D011175:Positive-Pressure Respiration / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*