It is very possible that you are having a reflux induced asthma attack. Basically the acid comes up and your airway goes into a protective spasm.
My concern is that you have done your homework. You are diligently doing all of the preventive things that can be done but yet you are still having pretty severe episodes.These episodes are not only scary but can be doing damage to your throat, esophagus, nasal passages, teeth, etc.
Because the preventive things aren't working - it may be time to see a doctor to discuss your options.
Simon, the exact same thing happens to me and it IS very scarey. I wake from a dead sleep gasping for air, then I sit up as quickly as possible. Once that did not work and I began to panic which woke the whole house up with my loud whooping for breath. When you are able to get your breath again, there is that nasty burning bubble at the base of your throat. Don't try to clear it, that just makes it worse and then you puke. What a lovely night (and I take Prevacid) Guess I should go to the Dr. too, but I don't wanna! Good luck with yours!
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