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2. Pulse oximetry - Wikipedia

   en.wikipedia.org/wiki/Pulse_oximetry

   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]

3. Normal Pulse Oximetry Ranges and How to Take a Reading - AOL

   www.aol.com/lifestyle/normal-pulse-oximetry...

   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. Skip to main content. 24/7 Help. For ...

4. Oxygen saturation (medicine) - Wikipedia

   en.wikipedia.org/wiki/Oxygen_saturation_(medicine)

   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 reading, or transfers it to another device. Oxygenated and deoxygenated hemoglobin differ in absorption of light of different wavelengths.

5. Photoplethysmogram - Wikipedia

   en.wikipedia.org/wiki/Photoplethysmogram

   [1] [2] A PPG is often obtained by using a pulse oximeter which illuminates the skin and measures changes in light absorption. [3] A conventional pulse oximeter monitors the perfusion of blood to the dermis and subcutaneous tissue of the skin. Finger pulse oximeter. With each cardiac cycle the heart pumps blood to the periphery. Even though ...

6. Should You Have a Pulse Oximeter in Your Family First Aid Kit?

   www.aol.com/news/pulse-oximeter-family-first-aid...

   Pulse oximeters measure heart rate and oxygen levels, but can they accurately detect dangerous symptoms of COVID-19? Experts explain how pulse oximeters work, what the readings mean, and whether ...

7. Respiratory compromise - Wikipedia

   en.wikipedia.org/wiki/Respiratory_compromise

   A pulse oximeter works by beaming red and infrared light through capillaries. The amount of red and infrared light transmitted provides an approximate measure of oxygen in the blood. The oximeter reading is based on the color of the blood: oxygenated blood is a brighter red than deoxygenated blood, which appears as bluish purple.