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I am slightly confused reading through this.

If am understanding this correctly you were previously on medication that can cause centrals, you discontinued the medication and your central apnea went away.

Since then you have been using pillow style masks and your AHI was regularly below 5 but recently it increased to 10+ for an unknown reason, the majority of which you claim are central although in the examples you posted I see a mixture of both central and obstruction as well as a mess of other issues like leaks etc.

You tried switching to a full face mask and your AHI reduced back below 5 and you are trying to understand why that might be. Is that correct?

When answering this post up some recent, typical FFM OSCAR graphs so we can get an idea of what your current treatment looks like.
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Me too. Confused. Very.

I suggest we drop the previous post which is about drug related Apnoea.

And I get the impression that contributors are not understanding the subject which is described in the the opening post. 

If, therefore, this is unclear I can try to clarify it.

Thank you for your input so far.
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So Pedrx my summary was correct?

As mentioned it is worthwhile to see one typical, recent FFM results before attempting to determine why the results are now different.

The main idea is likely a mouth breathing issue that has got worse for some reason.
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