Alice MD, Can you refer me to a document that says this about O2 that medical people would read and listen to?

unfortunately, I can't do that, not because there isn't such literature, but because I don't know how you can force medical people that choose to be ignorant, to read or listen to anything.

like I said, if you have physicians you can trust, stick with them, and avoid those that still live in a flat world. Make sure that the physician you trust and is fully aware of your condition, gives you a letter that clearly states what needs to be done, and what parameters need to be followed if and when you come to the ER.

If your condition was clearly diagnosed in Mayo and you have full documentation of this, just take it with you, and tell the physicians in the ER, that you have a rare illness that could only be diagnosed using special tests that are only available in Mayo.