What does "Pulse oximetry" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
Pulse oximetry is a simple, non-invasive test used in medicine to measure how much oxygen is in a person's blood. It works by passing a beam of red and infrared light through a pulsating capillary bed, such as the fingertip or earlobe. The sensor attached to these areas calculates the amount of oxygen in the blood based on the way the light passes through the finger or ear. This test helps doctors understand if a person's body is getting enough oxygen.
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