HeyaJeff, thanks for the info. I'd forgotten about this thread and missed it when I was asking about apnea earlier this year.

The machine I have has a heated humidifer, ramps up and I don't have any problems with feeling as though I am suffocating. I have a NasalAireII, but I really like the looks of the nasal pillows at the site you posted. Thanks for that. The less straps the better as the darn velcro catches in my hair, even through a net. I have been sleeping better and my pulse o2 has been better, but some of that is the new heart valve, too.:-)

I've lost over 30lbs. With about 30 more I am hoping the apnea may go away. the docs are sceptical and say it can be a hereditary condition because of biological structuring and I do remember stopping breathing even when I was 110lbs, so we'll see. Either way, thanks for the additional info!

kat