Okay I must be becoming more like Rested Gal all the time. No not more beautiful or less hiirsute. Just in the fact that I can't leave almost well enough alone. Been using the Hybrid for 3 weeks now and just couldn't resist doing some lab ratting on it.
For those weeks I have used the Large Mouth and large pillows. The pillows have been perfect and it is the first nasal pillow system that doesn't drive my nose insane. However, the straps have had to be cinched down tight for it to work for me and I attribute it all to the extra silicone piece for chin support. I have been using the large because the support flap is the only one that comes close to fitting under my chin on my long face. But it doesn't fit snug and to compensate I strapped down hard.
So since I had one setup that worked I thought I would play around with the other mouth parts to see if Icould improve things. Now my thinking was why do I need this chin support.? It is not like I need a chin strap to keep my mouth shut. I can mouth breath with this mask so no chinstrap needed. So the only reason I could see for it was to keep the mask stable.
You have to understand this support, unless it fits completely under your chin, actually lift the bottom of the mask around your lips so you need to pull the support tight enough to seal. So out came the scissors and I did surgery on the Medium mask I wasn't using. One careful snip and the support was gone.
End result was a a mask that completely sealed around my lips, even with the stache and beard. Benefits were it made the mask lighter, I could loosen the straps at the bottom, it puffed and sealed agaisnt my upper and lower lips just like my Activa agaisnt my nose and amazingly made the mask more flexible. I could open my mouth wide and the seal moved with my mouth without breaking. A good mask made better from initial impression.
So last night I slept with my new surgically reduced Hybrid. Again not saying this will work for everyone, but it was wonderful. The looser lower straps did not pull agaisnt my head and the pressure agaisnt my face was less. I used tighter straps on the upper ones to bring the pillows to the perfect position for me. Looser, the pillows go towards the tip of the nose. Tighter, they go more towards the face. The mask was very stable (my biggest fear from taking the chin support away) and flexilbe enough to move without breaking the seal when pressed agaisnt my pillow.
End result was reasonable leak numbers, more reliable read out from my Resmed Auto and the lowest AHI i have had with any mask (2.0). so the experiment paid off. Next I think with a little trimming I can turn the mouth piece upside down so I can route hose over my head without the noise problem. I may wait on this one until replacement cushions are available.
For those of you who have had problems with the Hybrid, you might want to try this fix before tossing it in your old mask drawer.