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How much oxygen can you inhale from an oxygen concentrator?

Apr 22, 2019

The table shows relationship between inhaled oxygen concentration and Flow rate
 

JAY-5AW

Because the nasal oxygen tube is open oxygen inhalation ,that is ,when a person take one breath ,some air (21% (V/V) oxygen concentration will be inhaled nearby ,while the oxygen concentration actually reaching the lungs is mixing.
 
The oxygen concentration after air is the inhaled oxygen concentration ,while the oxygen concentration lower than 25%(V/V) is the similar as that concentration in the air If inhaling oxygen below 1L/MIN has no therapeutic value .In the process of oxygen nursing ,great attention should be paid to oxygen concentration and oxygen flow rate.