I need a non-welt producing Full Face mask. Nasal masks do not provide me with sufficient restraint to prevent leaks. And as you all know leaks invalidate much of analysis software’s output. I have both Dreamwear mask types. The Dreamwear Velcro felt pads only marginally reduce welts caused by the f...

I get this, variable breathing, a lot. In my case I assumed it was due to the fact that "I" have constant Atrial Fibrillation AND Arrhythmia (arrhythmia is a problem with the rate or rhythm of the heartbeat). Looking at Whiskey-Romeo's posted waveform you'll notice that the time interval between the...