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A pulse oximeter probe applied to a person's finger. A pulse oximeter is a medical device that indirectly monitors the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmogram that may be further processed into other measurements. [4]
Pulse oximetry is a noninvasive, painless test that measures the oxygen saturation level of your blood. Here’s how it works and what the readings mean.
Example pulse oximeter. Pulse oximetry is a method used to estimate the percentage of oxygen bound to hemoglobin in the blood. [10] This approximation to SaO 2 is designated SpO 2 (peripheral oxygen saturation). The pulse oximeter is a small device that clips to the body (typically a finger, an earlobe or an infant's foot) and displays its ...
Pulse oximetry which involves measurement of the saturated percentage of oxygen in the blood, referred to as SpO2, and measured by an infrared finger cuff; Capnography, which involves CO 2 measurements, referred to as EtCO2 or end-tidal carbon dioxide concentration. The respiratory rate monitored as such is called AWRR or airway respiratory rate)
Pulse oximetry measures the oxygenation in peripheral capillaries (such as the fingers); however, an article written by Bohning states that pulse oximetry may be imprecise for use in diagnosing obstructive sleep-apnea, due to the differences in signal processing in the devices.
health worker uses a pulse oximeter to check the oxygen saturation level , Jan. 21, 2021 The accuracy of pulse oximeters for people with dark skin tones is now being reviewed.
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