Remove any jewelry or fingernail polish on your finger if measuring from this location. Make sure your hand is warm, relaxed, and below heart level if attaching the device here. Place the device on your finger, earlobe, or toe. Keep the device on for as long as needed to monitor your pulse and oxygen saturation. Remove the device once the test is over.
Pulse oximetry is a noninvasive test that measures the oxygen saturation level of your blood. It can rapidly detect even small changes in oxygen levels. These levels show how efficiently blood is carrying oxygen to the extremities furthest from your heart, including your arms and legs.he pulse oximeter is a small, clip-like device. It attaches to a body part, most commonly to a finger.The purpose of pulse oximetry is to see if your blood is well oxygenated. An oxygen saturation level of 95 percent is considered typical for most healthy people. A level of 92 percent or lower can indicate potential hypoxemia, which is a seriously low level of oxygen in the blood.
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