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Our bodies' oxygen requirements

Atemwege Ratgeber
 

The human body needs approx. 400 litres of oxygen (O2) each day. Oxygen keeps the cells in your body alive and functioning. Transporting this amount of oxygen requires a "carrier" – haemoglobin. The oxygen becomes attached to the haemoglobin in red blood cells and is then supplied to the organs via the bloodstream

Oxygen saturation (SaO2) = percentage of haemoglobin molecules that are carrying O2 in the arterial blood.

In healthy people, oxygen saturation is around 94% to 98%.


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