Thanks for your replies.ChicagoGranny wrote:It's possible that you have one major problem - mouthbreathing while using a nasal-only interface. The therapeutic CPAP pressure is lost out the mouth, and you are having apneas. After four or five hours of sleep, your body is filled with cortisol due to the apnea. Then the cortisol makes it hard to fall back to sleep using the machine. If this is the case, it's unlikely you will solve the problem with changes in machine settings. The exception would be if your settings are much higher than a therapeutic level.tazmania wrote: normally wake up after getting about 4 or 5 hours of sleep with an extremely dry mouth. The Dr. is having me play around with the machine's pressures. His theory is that I'm having trouble pushing back enough through my sinuses and thus I begin to breathe out my mouth where there is no resistence. Once I'm awaken to the dry mouth or an apnea occurence I take the mask off and sleep without the machine. It's hard for me to get back to sleep using the machine so I normally just shut it off.
Given your situation, this is more than a nicety. You are unlikely to get your therapy straightened out without data.tazmania wrote:I'd be nice to monitor myself
From what I can decipher I typically get about 4 to 4.5 hours of sleep on the CPAP before I'm awakened. Remembering what the Dr said when he showed me the machine's stats, he said I had no issues with leaks and very little apneas, etc while wearing the machine. His conclusion was that the machine was working very well for me so for now he recommended I continue to use this same machine even though, to quote him, "it's aged".
He drew the conclusion that eventually when I become extremely relaxed or in deep sleep the resistance through my sinuses was enough that causes me to start breathing through my mouth. For certain I have dry mouth because my humidifer drains quite quickly unless I have a night's sleep where I didn't have dry mouth. Theory being the forced air was just going in through the nose and out my mouth. I've now reduced my pressure from 12 to 9.
However,
It has now been several weeks of trying to reduce the pressure and I am not getting a better night's sleep. For the last week or so I have been using the new mask and nasal piillows just to see if that was a factor. I may be now averaging around 4:30-5 hours of sleep before I wake up which is barely more than what I was getting before.
So it is probably time for me to get back in with Doc and talk about next steps.
I have decided not to buy a card reader seeing the Doc said the next steps for me may be to have another study and see if a bi-pap is a better machine for me.