Friends, I had an experience that might be of help to those with sinus difficulties apparently caused by Cpap. First my situation: I have severe apnea (46 AHI on a hospital sleep test). I am using a Philips Dreamstation APAP with heater and humidifier on 5. I am using the APAP at altitude (7900 ft) ...

I use that mask and it swivels. However, I have found that my therapy works much better if I lie on my side that faces the machine all night. I make a cocoon of pillows to prevent me from turning on my back.