Hi, I'm Lee. I was diagnosed with severe sleep apnea just over a year ago, and use the cpap every night. My numbers were 58.4, which is ridiculously high. After using the cpap my numbers went down to 9, which is still not normal, but a huge improvement. I felt reborn! However, my numbers have been slowly creeping up and no one seems to know why. I use the machine religiously every night, but my numbers are back up to 23. I am scheduled for another overnight this week to try to figure it out. I am so tired! This has been very frustrating. Has anyone had the experience of their numbers creeping back up?