Soda Lime Adsorption of Isoflurane and Enflurane
作者:
Warren Grodin,
Mary F. Epstein,
Ralph Epstein,
Ronald Miller,
期刊:
Anesthesiology
(OVID Available online 1985)
卷期:
Volume 62,
issue 1
页码: 60-64
ISSN:0003-3022
年代: 1985
出版商: OVID
关键词: Anesthetics, volatile: enflurane;isoflurane;Carbon dioxide: soda lime;Equipment: circuits;Induction: anesthesia;Physics
数据来源: OVID
摘要:
The authors demonstrated that soda lime will adsorb enflurane or isoflurane as a function of the water content of the soda lime. Various volumes of liquid enflurane or isoflurane were placed in an equilibration flask containing fresh (15% water by weight) or dried soda lime and the vapor phase anesthetic concentrations plotted. When dry soda lime was used, the plot of concentration as a function of volume of liquid added was biphasic: initially flat and then rising linearly. This is qualitatively similar to data reported previously for halothane. The authors hypothesize that drying soda lime produces a molecular sieve-like structure, as adsorption is greatest for molecules with small carbon chain lengths and kinetic diameters, or with structural characteristics such as cis/trans isomerism, which effectively reduce molecular size.
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