I have been monitoring my Oxygen Saturation levels (SpO2). in the evening I am borderline low @94-95. As soon as I hook up the CPAP it goes up to 99.
Is this normal? I do have a slight anemia, (low MCV) probably due to Iron, which is why I am monitoring the SpO2.
94-95 sounds pretty good to me! 99 is fine but I'm not sure we're built for it to be there all the time all night. I perk along at 93 at night. But like I say everyone's different. Except me of course. I'm not different.... I'm the same.
I am assuming that you are not looking at an all-night recording of your sO2sats, but a "live" view (you didn't state if this was based on a read-out from a recording pulse-ox or not) - if that is the case, then, yes, the added air pressure will raise, temporarily, your sO2sats to 99 as you start to take in greater doses of air during the adjustment period, but it should lower to around 92-95/7 as the norm during sleep - if you are 99% oxygenated all night, I am not sure if that is exactly healthy or not, only tha tit is above the norm, however I doubt seriously that you could be - it would indicate you are pushing tons of oxygen in a manner that most CPAP devices don't permit, because it depends not only on the pressure of the air to deliver the O2, but how long and deep the breath is, and most machines sort of prevent, in their method of cycling air, a log pattern breath ( I know this since it is a problem for me, having "diver's lungs" and tending to skip-breathe) or rapid breathing.