Changes

Oxygen saturation describes how much of the hemoglobin – the oxygen-transport protein in red blood cells (erythrocytes) – is currently saturated with oxygen. It is typically given as a percentage relative to the total hemoglobin. Expected ''normal'' blood oxygen saturation values are between 95% - 100 % and values <90% are considered to be hypoxemia <ref>https://en.wikipedia.org/wiki/Oxygen_saturation_(medicine)</ref>.   

Oxygen saturation describes how much of the hemoglobin – the oxygen-transport protein in red blood cells (erythrocytes) – is currently saturated with oxygen. It is typically given as a percentage relative to the total hemoglobin. Expected ''normal'' blood oxygen saturation values are between 95% - 100 % and values <90% are considered to be hypoxemia <ref>https://en.wikipedia.org/wiki/Oxygen_saturation_(medicine)</ref>. Of great importance to those with sleep apnea<ref>https://old.reddit.com/r/SleepApnea/</ref>.   

==Definition==

==Definition==