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Very‐nearly‐closed‐circuit anaesthesia
Author(s) -
HOLMES C. McK.,
SPEARS G.F.S.
Publication year - 1977
Publication title -
anaesthesia
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.1977.tb10106.x
Subject(s) - medicine , citation , library science , computer science
A simple analogue study of inspired oxygen concentrations in a circle absorber system was made. Good agreement with clinical observations and figures reported by others was obtained. The suggested low-flow regime was nitrous oxide 1 litre/min and oxygen 0.6 litre/min, which provides inspired oxygen concentrations between 35-25%, over a range of oxygen consumption from 150-300 ml/min. The use of such low flows is economical and reduces atmospheric pollution in the operating theatre.