The therapist told me medium. They leaked easily so I switched to large. Large is almost leak free. Pick one and see how it works. In my experience, keeping the head gear "not very tight" works best. It's counter-intuitive.

I once read a review on this machine where it was mentioned that the power plug could easily come loose from the back of the machine. You may want to check to be sure it is in snugly.

AHI is never above 3. I feel better than I've felt in a while! So glad I got started with cpap. I'm looking forward to the follow-up with the sleep doc. Nothing but good things to say about the sleep center and their staff. (Sleep Insights)

What are the "Units" for the charts in Sleepyhead? Some are obvious, others not. Leaks, flow limitation, snore?

One thing I am interested in learning more about is the Clear Airway Apneas I am seeing. Does the S9 report this accurately? I had 14 of these on night (10 - 14 seconds in length). I understand that certain apneas have a number considered to be acceptable. Does this fit in the normal range? I am new...

Would someone be interested in looking over my Sleephead data and helping me understand it?
Thanks!