Hi sprite60, WELCOME! to the forum.!
AS far as the mask goes, don't be shy about asking to try different ones, sometimes it takes quite a few 'till you find the right one that works for you.
Hang in there for more answers to your questions and much success to you asyou start your CPAP journey.
My thanks to all who responded. This is quite the education process. It appears the ResMed S9 VPAP™ COPD is the only non-auto BiPAP machine that is rated for 30 cm H2O. My pulmonologist said no to Auto BiPAP; he wants my pressures fixed at 26 I / 20 E. I understand he may adjust those pressures based on the data reports from the BiPAP machine.
I did check the ResMed AirCurve 10 machines and max pressure is 25 cm H2O on all.
Someone asked why my IPAP pressure is so high. I'm 66 year old and obese. I had 2 split-night sleep studies. The first was no machine, then CPAP (AHI = 54 per hour at 14 cm H2O). The second study was CPAP (up to 20 cm H2O & not effective), then BiPAP. At 26/20 cm H20, AHI dropped to 6.8 per hour. I hope that helps explain my situation to the experienced experts at Apnea Board.
Again, thanks to all of you who responded! I am sure I will have more questions as I start using the machine next week.
I use the S9. Initially my pressures were 26/19, and it was very difficult to prevent leaks in either simplus or mirage quattro masks. Reducing the pressure (20/12) sealed masks ok, but in S mode, my apneas have remained in the moderate area.
I have recently switched to a full face mask from just a nasal one. I was having to wear a chin strap before to stop my mouth from gasping all the air straight back out and making a terrible noise. I find it's much better to sleep in and can switch to breathing with my mouth temporarily until I fall asleep if my nose is a bit blocked up.
Update: My initial problems were related to mask leakage due to my high pressures (26/20). Medical West in St. Louis is my DME and they were very cooperative in working with me to find a mask that would work. I learned that the size of the mask plays an important role and that the sizing guides don't always result in the optimum fit. It really takes trial & error, working with a good tech and testing the masks with MY machine at MY pressures.
I am currently using a F&P Simplus and getting good results. It is very comfortable (for me), leakage is very low and this has brought my AHI's consistently under 10.
My advice to other newbies is to proactively work with your DME during that initial 30-day period to find the best solution for you.
Again, I send my thanks to everyone who shared their thoughts!