I think in some cases it gets to the point where they are mechanically oxygenating the blood and there are very few machines available to do that.
Swell- I’ve seen videos on youtube of people dying from Cystic Fibrosis, and lou gerrig’s disease, and it’s just awful- the slow oxygen starvation panic over and over and over again- must be absolutely frightening - wish there was some meds that could put a person into short term unconsciousness- to ease them through that terrible process-