I am curious why when oxygen is administered for passengers during flight, high
flow outlet (4 liters per min) will be used except in the cases of emphysema.
One of my friend working as an ambulance first aider told me that they usually
will apply low flow outlet to all kinds of casualty.
Why there is a difference between the method for the cabin crew to apply oxygen
to pax during flight and that for ground first aider to apply oxygen to ground
people? Is that because the pressure in the aircraft is different from that on
ground?
Joktan LO