A blood oxygen saturation within 95% to 100% typically indicates proper lung function. It can also indicate that oxygen levels in other parts of the body, like organs and tissues, are optimal as well.
People who are breathing normal, who have relatively healthy lungs (or asthma that is under control), will have a blood oxygen level of 95% to 100%. Anything between 92% and 88%, is still considered safe and average for someone with moderate to severe COPD. Below 88% becomes dangerous, and when it dips to 84% or below, it’s time to go to the
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