It is a small digital device that you have to put on your fingertip or on your earlobe or on your toe to measure your blood oxygen saturation level painlessly by sending an infrared light into the blood vessels of those body parts and at the same time indicate your pulse rate also.
Does oxygen level affect heart rate? Hypoxemia is a sign of a problem related to breathing or circulation and can lead to various symptoms, such as shortness of breath.
You can say that oxygen is the fuel of the body that drives your all vital activities.
As a result, the reduced availability of oxygen in the air reduces the blood oxygen saturation in the body.
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