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Re: Optimum pressure caveats, indeed!!

Posted by SGS on February 12, 2003 at 17:22:06:

In Reply to: Re: Optimum pressure caveats, indeed!! posted by - Sleepy Coote on February 12, 2003 at 16:47:46:

I'm going to have to read up on this Hering-Breur reflex (i've never heard of it apart from here just recently). One of the key designers of a well known AutoCPAP doesn't think that central apnoeas are anything to worry about (my rough understanding I assume this doesn't include people in heart failure).

I don't know whether it's known whether apnoeas and hypopnoeas have the same or a different pathological effect - but they are treated as being the same through their incorporation into the AHI. Sleep fragmentation is bad enough but the oxygen desaturation effects on the cardiovascular and cerebrovascular system frighten me.

If AutoPAP works better than CPAP for you then go with it. There is no formula for working it out. We want to run an experiment which compares an AutoCPAP with standard CPAP in a sub-population of people with OSA that I think should (in theory) benefit the most from the characteristics of AutoCPAP. Specificity in the application of pressure ought to be a good thing. But is it good enough for the extra money you pay?

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