Central Apneas positional?

[zzzZorro]

Thanks all- thatadbe what I was looking for..

As an aside; After about 2-3 months using the QuattroAir FFmask with almost zero problems the damn thing has started pfarting (not badly but just enough to disturb my sleep immensely).  Replaced the mask seal with a new one but made no difference.  Thought I had it whipped with AHI running sub-ones to two+.  Now it is ten+   crap!
Back to the drawing board

[Crimson Nape]

While I don't use the same brand FFM as you, I've noticed that a slight drop in weight will cause leaks that weren't there before. Now I've determined one good reason not to lose weight.