Pulse Oximeters

A pulse oximeter is a medical device that indirectly measures the oxygen saturation of an individual's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmograph. It is often attached to a medical monitor so caregivers can see an individual's oxygenation at all times. Most monitors also display the heart rate. Portable, battery-operated pulse oximeters are also available for home blood-oxygen monitoring.

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