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semi-open anesthesia in Medicine

semi-open anesthesia

(sĕm′ē-ōpən, sĕm′ī-)
n.
  1. Inhalation anesthesia in which a portion of inhaled gases is derived from an anesthesia circuit while the remainder consists of room air.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.