Thanks for the info. I also have other medical problems which revealed my OSA during an office visit when I fell asleep while the doctor and tech were in the room examining me. I developed complete sudden hearing loss in my left ear last October and after 2 MRI's the findings revealed a epidermoid tumor impinging on the 8th cranial nerve. Other than my symptoms from the OSA, I have severe balance issues and am dizzy most of the time, which seems to be worse since I started CPAP last week. So far I have been adapting well to my mask, but when I turn on my side the force of the air almost blows my wife out of bed. Right now my rate is 20cm. From what I've read on this forum that sounds kind of high? Is it