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The Hewlett-Packard 47201A ear oximeter has been shown to measure arterial oxygen saturation (SaO2) above 50% SaO2 with an accuracy of +/- 5%. Below 50% SaO2, the oximeter underestimates arterial saturation in a predictable way, thus allowing a correction factor to be used: true SaO2 = (oximeter reading + 50)/2.

Type

Journal article

Journal

Bull Eur Physiopathol Respir

Publication Date

09/1982

Volume

18

Pages

791 - 794

Keywords

Blood Gas Analysis, Ear, External, Humans, Lung Diseases, Obstructive, Oximetry, Oxygen