What is a Pulse Oximeter?

[pat-]

been admitted to the hospital because of low blood sugar, I know that I'm gonna have an episode if i feel uneasy and anxious, still, I want to have this everywhere I go just in case if i miss a few symptoms, thank you for your explanation

[superiorSam]

Oxygen saturation is reading mid 70s and pulse in the 40s sometimes waiting for test results

[faithmustone]

How in the world do you expect us to understand what Garb is talking about in the mumbling and quick fasting talking