This can prevent the lungs from inhaling adequate oxygen from the air and exhaling carbon-di-oxide.
The sensor should be at the base of the nail.
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It may also be important to check your levels if you experience symptoms of low oxygen, such as wheezing or chest pain, when sleeping, exercising, or traveling at high altitudes.
How to correctly use Pulse Oximeters? It will help to keep a tab on your oxygen levels regularly.
It is a very simple device that is used to measure how well oxygen is being sent from the heart to different parts of the body, including your legs, arms, among other parts.