pulse oximetry
noun
1
: a method that utilizes spectrophotometry to measure the oxygen saturation of circulating arterial blood by means of a pulse oximeter
Her oxygen saturation by pulse oximetry was 97% to 99%.—Charles Wiener
Before pulse oximetry, the only option for measuring a patient's oxygen saturation was a painful invasive arterial blood gas test and it typically took a minimum of 20 to 30 minutes to obtain the result.—Keri Forsythe-Stephens
Pulse oximetry is a spectrophotometry technology which determines the arterial oxygen saturation by the detection of pulsatile blood flow and is based on differing absorption spectra of oxyhemoglobin and deoxyhemoglobin which includes the red and near-infrared wavelengths of light.—Shruti Singh et al.
2
plural pulse oximetries
: a test using pulse oximetry
… the patient would undergo pulse oximetries in their own homes conducted at rest, with activity, and overnight.—Hospital Home Health
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Merriam-Webster unabridged
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