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You could be correct if you are being hyperventilated. Perhaps a retitation study is in order.
Simply put, there is no such thing as a central hypopnoea. Hypopnoeas are not actually classified as obstructive or central, they are just hypopnoeas, so I wouldn't worry about it. A better question is "does CPAP get rid of them?", which a titration study will tell you.
Elevated CO2 levels can cause headaches. I'm not sure how you would go about having that assessed where you are.
I am not a doctor but a tech. i can tell you that CPAP of reduces blood pressure if was initially too high. If you were prescribed meds to lower your blood pressure before commencing CPAP therapy, and your meds have not been reviewed since, the CPAP may have helped to normalise your blood pressure and those meds could then be pushing it too low. It could well be worth visiting the Dr for a reassessment of your medication levels if you have not already done so.
You may well find that the cheapest way to get masks is to shop online at ebay and other retail sites. However, somewhere you can get some hands on experience is also useful.
I would suggest that you consider turning off the EPR because it can be the cause of central apnoeas. In theory, you should be able to set the minimum pressure much lower because the auto algorithm should adjust upward if an when required. However, I would also suggest that this should all be done in consultation with your doctor.
Not necessarily. It depends upon the nature of your specific obstruction. You may be able to use positional therapy, and weight loss may have very good results for you. I apologise if this has been mentioned before but I don't really want to read all of the other posts to check.
It seems a little odd that you have such a low AHI and such high pressures. How was the range of 10 - 20 arrived at? Do you suffer from any restless legs?
The Nuance Pro is the same as the Nuance except that the short hose that is part of the mask is sturdier than on the standard version. It was designed for use in hospitals where it would have to withstand repeated sterilisation. I can't see an advantage in it for the average punter.
Obstruction is usually at its worst during REM sleep. Your body hyper-relaxes most of your muscles to stop you acting out your dreams (it sort of anaesthetises you). This applies to the muscles of your upper airway too - they become super floppy and therefore are at their most prone to collapse. So what you say makes sense. REM-isolated obstruction is not uncommon.
