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End‐tidal oxygraphy and safe duration of apnoea in young adults and elderly patients
Author(s) -
Bhatia P. K.,
Bhandari S. C.,
Tulsiani K. L.,
Kumar Y.
Publication year - 1997
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.1365-2044.1997.14-az016.x
Subject(s) - medicine , oxygenation , anesthesia , end point , oxygen saturation , population , oxygen , chemistry , geometry , mathematics , environmental health , organic chemistry
Using an end‐tidal fractional oxygen concentration of 0.9 as an end point for pre‐oxygenation, we have compared the time taken to achieve this end point and the safe duration of apnoea after induction of anaesthesia following pre‐oxygenation in elderly patients and young adults. The times taken to reach the end point of pre‐oxygenation and for the oxygen saturation to decrease to 92% during a period of apnoea were found not to be significantly different between the two age groups. It is concluded that in spite of the physiological changes that occur with age, end‐tidal oxygen concentration monitoring is as useful in the elderly population as in young adults as an end point for pre‐oxygenation.