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+--- Thread: CPAP + O2 Concentrator Issue? (/Thread-CPAP-O2-Concentrator-Issue)
CPAP + O2 Concentrator Issue? - mogulman - 10-08-2024
Resmed Autosense 10 CPAP (9-11.0) + Respironics Everflo Oxygen Concentrator (2L/min) user since around 2015. I live in CO at around 6200 ft. I only use Oxygen at night. Resmed ClimatelineAir Oxy Tube, although I've been using it unheated. Humidy level 5.
Previously, when I would turn on the O2 Concentrator (prior to starting the CPAP), I could feel air coming out of the CPAP mask in my nose from the O2 Concentrator. Noticed that I couldn't really feel it anymore. Could be my imagination though, or air temp. Also, maybe since I switched to newer N30i (more silicone/less plastic nose piece a while), it is just different?
Anyway, pulled out my old CMS50f Oxymeter to measure my O2 levels throughout the night. Haven't tested my O2 since 2018. Figured I would test with the O2 Concentrator, and without. To see if there is much difference. Anyway. This is what I ended up with. Looks like my O2 dipped below 88% quite a bit. Makes me a little worried? I have gained some weight over the last few years.
AHI seems pretty good. Maybe I need to up my O2 level? 3 L/min. I don't really want to pay for another sleep study, although I haven't had one in 7 years.
Any suggestions? Attached is my screenshot from last night.
RE: CPAP + O2 Concentrator Issue? - G. Szabo - 10-08-2024
Your flow limit is okay, but the oxygen saturation is concerning. I suggest increasing your minimum pressure to 10.4 to be closer to your 95% value, which is 10.7. Then, compare the saturations. I expect it will improve.
Your EPR should be 3, and your maximum pressure should be 12 cm because you are occasionally close to your 11 cm limit.
RE: CPAP + O2 Concentrator Issue? - staceyburke - 10-08-2024
Yes raise the oxygen to 4 or 5. More is not a problem. Test and move down IF you can. The oxygen bleeding in the Cpap is much lower than a cannula.