Dreamwear Philips Respironics mask

[TechieHippie]

I too use this mask and sleep on my side without issue. I think the nasal pillow (with nubs but no gel in the new ones) works better than the nasal cushion with a slit for side sleeping for me. I also worried at first about the tube compression, but then what I realized is the problem was not the tube but displacement of the nasal hole/s to the side. One thing that helps is pull it away while at pressure to inflate the silicone and position again based on feeling the direct flow of air. I do that a few times a night. Another thing that helps is to rotate the whole frame slightly to one side or the other before laying my head down. I can't remember which direction works, I think rotating about 1/8" toward the pillow side so that when I lay on it, it lines up better. Finally I've found that with the pillow (the nubs), it works better if once it's pressurized I curve it up on the ends a little like a smile around my nose, and somehow it seems to stay that way.

However, one caveat is that the pillow-side nostril sometimes closes up some and if the other is stuffy, it can be problematic. In that case I tuck a pillow in front of me also so that I'm at an angle and the lower nostril gets more airflow.

[G. Szabo]

It also helps to buy a pillow designed for mask users who sleep on their sides. It ensures that the mask remains in the correct position.

[tbhausen]

The mask frame is all one undivided pressure chamber to both nostrils. Even if it was made with a tube down one side only, both nostrils would receive equal pressure. I use a ResMed P30i which is similar in concept, and I'm a side sleeper. It works great and is super comfortable.