I sure like the forum. There's plenty to read and learn from.
I am new to the board. I apologize for being so long winded but I feel that the whole history is needed to get the right information.
I have been trying to use CPAP for a long time, like 2 years but unsuccessfully. I'll give a little history.
I haven't slept well for may years. The VA did a sleep study in early 2010 which showed Moderate OSA, I don't recall the numbers. During the study, I was unable to sleep at all on my back so they said the results were not sufficient to set a prescription so the gave me a System One RemStar BiPAP Auto with Bi-Flex (750P) to use for a week or so.
I was sick and tired of being sick and tired. I was excited to get the CPAP machine. My Father-in-Law loves his CPAP. I thought I would no longer be tired all the time.
After the week with the BiPAP, the VA gave me a System One RemStar Auto with A-Flex (550P) and set a pressure of 4-11. The first day I called them because the 4 was too low to start with and the 11 seemed too high, it would wake me as soon as it got there. They set the low pres. to 6 but left the high press at 11. I couldn't get used to the high setting so I stopped using the machine. I got the high press set to 10 finally and managed to use it some but I still had a LOT of trouble using it. The more nights in a row I tried to use it, the less time per night I kept it on so in a week I would quit using it again. I was truly getting better sleep without it.
I then got a different person at the VA that would at least listen to what I thought. She gave me a System One RemStar Pro with C-Flex+ (450P) which is an APAP. I like it better but was still not able to use it for more then a few days in a row without a pause. I still felt better not using the machine. I tried it for a few weeks then put it away for a year.
I recently got health insurance so I started seeing the sleep people at the University of Minnesota. After seeing them, tried using the APAP again and now have about two weeks of nightly use. My problem is that I have a hard time keeping it on all night. I get a runny nose, cough, sneezing, etc. I discovered through another thread here that all distilled water is not really pure distilled water. Unlike a still, the CPAP Humidifier doesn't have a way for impurities in the water to vent or escape so you breath everything that's in the water. I was using Wal-Mart Distilled water and it says it's "Processed by: Steam Distillation, Microfiltration, Ozonation". I got some water from Target that says it's "Processed by: Steam Distillation" and thats all. Now the runny nose, cough and sneezing have stopped. Now I need to start focusing on the setting of the machine.
I still have the APAP. It's set to start at 6 and peek at 10. I suspect that I need the upper limit to be higher based on my limited knowledge of the readings. Any suggestion or advice would be greatly appreciated. I will be doing another sleep study next week. I'll post what they tell me.
I also should mention that I am using the SleepyHead software. Here is what I did last night. It seems like every time the AHI goes up, I wake up and usually remove the mask, last night I kept it on. I use a RESmed Quattro mask. They tell me I'm a mouth breather.

I guess the image won't show up here so here's a link to it. http://www.brontoserver.com/gallery/bart001.jpg