How and why does CPAP therapy work?
It seems obvious when the CPAP machine is pumping flowing, pressurized air up the nostrils but how far can you back off before it stops working?
A nasal mask doesn't direct it up the nostrils but still works.
The full face mask increases pressure around the face but still seems to work.
Why does pressure outside the body help force air into the body?
Would a diving helmet work?
How about a full-body space suit?
What if we extend the parameters to a pressurized room or bubble or humidi-crib?
CPAP has to fail at some point because it doesn't just depend on increased pressure.
Is the effect due to internal pressure versus external pressure at the throat and perhaps even the lungs?
If so equalizing or increasing the external pressure below the chin would nullify the effect.
Would creating a vacuum around the throat have the same effect as CPAP therapy?
Apnea is significantly affected by gravity, which causes both weight and 'normal' air pressure but is also directional.
What role does CPAP play in those effects?
Should we increase the pressure settings to compensate for the weight of heavy blankets in winter?
Could those extra blankets contribute to Apnea and the high death rates at that time of year?
Is there a link between Apnea and cot deaths?
Too many questions?
Somewhere in the dim past, I recall Julius Sumner Miller regularly asking ...
"WHY is it so?"
Of course, he often spoke of "a glas' an' a haf" which might also contribute to Apnea.