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Improving the efficiency of the drawover anaesthetic breathing system
Author(s) -
Eales M.,
Rowe P.,
Tully R.
Publication year - 2007
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.2007.05224.x
Subject(s) - medicine , breathing , anesthesia , oxygen , tube (container) , fresh gas flow , ventilation (architecture) , artificial lung , waste management , chemistry , sevoflurane , mechanical engineering , organic chemistry , engineering
Summary We investigated modifications to the reservoir tube usually used in drawover anaesthetic breathing systems as a method of improving its efficiency and performance. The resulting oxygen concentration was recorded at different oxygen flow rates whilst an artificial lung was being ventilated over a range of minute volumes. Addition of a reservoir bag and valves significantly increased the measured percentage of oxygen at the common gas outlet when compared to a 300‐ml reservoir tube. There was no difference in the percentage of oxygen when comparing a reservoir bag and a 600‐ml reservoir tube.