Again, this is shooting from the hip. It's difficult for me to say much without knowing some things like if this is with or without PAP and if you are sleeping or not. If you are not on xPAP, it would be worth your while to get a sleep study. It looks like your oxygen level is fluctuating throughout the night. Also, your heart rate is doing the same. The last couple hours of the recording look interesting. After 4, the pulse rate shows some mountain peaks. That tells me something is going on. More importantly, in the oxygen graph at 6 and just after, there are some significant desaturations. From the numerous baseline polysomnograms I've done, I've noticed some people have their worst episodes of sleep apnea late in the study. You were probably going through a REM cycle right about there.
If you are on xPAP, it looks as if there is room for improvement. Perhaps there is a mask leak going on or maybe you need more pressure.
Interesting! THANK YOU, SleepMBA. This night was w/2L of 02 and no PAP. And, yes, this particular night I did sleep all the way thru.
I'm just always so impressed w/what you RPSGTs can discern from the various graphs produced during a sleep study - or in this case an overnight oximetry.
I keep saying that RPSGTs are the true heroes of sleep medicine. Its too bad we need the sleep doctors for the scripts 'cause not too many of them are very darn impressive. Dr Park excepted, of course.
I often wondered if you sleep techs could telll from our ResScan graphs whether we were sleeping on those night where we sleep 2 hours, wake 2 hours but just lay there, sleep another two hours, another 2 hours of awake and just laying there, etc. I know it wouldn't be near so accurate as an in-lab PSG but I have wondered if there are some tell tail signs that you can be fairly sure of when we were awake and when we were sleeping.
And, no, I don't have a printout to challenge you w/'cause I don't remember what nights I've done that to go back to and pull out. You're safe! *wicked grin*