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Korean J Anesthesiol > Volume 51(2); 2006 > Article
Korean Journal of Anesthesiology 2006;51(2):230-232.
DOI: https://doi.org/10.4097/kjae.2006.51.2.230   
An Unexpected Vapor Leakage from Unlocked Vaporizer (Penlon Sigma Delta Anesthetic Vaporizer): A case report.
Seung Yun Lee, Sung Ho Suh, Jae Hoon Cho, Jeong Ae Lim, Kyoung Min Lee, Nam Sik Woo
Department of Anesthesiology and Pain Medicine, College of Medicine, Konkuk University, Seoul, Korea. nswoo@kuh.ac.kr
Abstract
We present a case of an anesthetic gas leak through the valve of the Selectatec back bar during a surgical procedure. The Selectatec Vaporizing System is a quick-change system consisting of anesthetic vaporizers of the 'Tec models' of the Ohmeda machine that are seated on a compatibility manifold block located on the back bar of the anesthetic machine. In order to prevent a leak and a failure of vapor delivery, the "Tec models series" can only be turned 'on' when the locking lever is turned to the 'lock' position. However in this case, the control knob was rotated despite the back bar locking mechanism not being engaged, and a gas leak developed through the unlocked valves in Selectatec back bar. The Penlon Sigma Delta Anesthetic Vaporizer (sevoflurane) in a Datex-Ohmeda Aestiva/5 anesthesia machine can be turned 'on' when the locking lever is maintained at the 'unlock' position.
Key Words: anesthetic gas leak; anesthetic vaporizer; selectatec back bar
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