I'm sorry to hear you have central apena. this has to be scary. I was recently dx. with obstructive apena. I am still not sure of using the machine. I panicked when I had my 2nd sleep test and they put this on me. I kept waking up and had to pull the mask away from my face. (anxiety got the best of me at times.)

I know your machine will be quite different and so will the mask. Also, I had resistance when breathing out which you will not have. I hope some one can answer your questions. But I would like to think that when you are breathing the right way you will feel more energized, thus feel better.

Good luck and keep us posted.