I apologize for not posting an update here much sooner. Because of the helpful replies that were posted here, I did raise my Rise Time from the default of 300 to 900, and I also raised my IPAP Max from the default of 2.0 to 4.0. That solved my initial problem, and I no longer feel my inhalations cut...

Many thanks to christinequilts, rested gal and anyone else who may still contibute to this post. I'll try your suggestions over the next couple of days and report back.

christinequilts wrote:...Try taking a few deep breaths in through your nose and out through your mouth- assuming you're using a nasal mask.

I'll certainly try what you're suggesting, but -- since I'm using nasal pillows, not a mask -- do you think it would work the same way? Thanks.

I used a resmed VPAP III for a few weeks, just for the heck of trying it out... I left my IPAP/EPAP where they were (I had already set IPAP 12 / EPAP 9 ... the way I wanted it. ) I adjusted three other settings to these numbers: Rise Time 900 mS IPAP Max 4.00 s IPAP Min 0.10 s Many thanks for the i...

oceanpearl wrote:If it is a flex system I would try changing the flex settings. That worked for me.

I'm new to this. How do I know if the VPAP III is a "flex system"?

I've been using a cpap machine (a Resmed S7) with Mirage Swift nasal pillows for over 2 years. It's worked pretty well, but my doctor feels that I would benefit even more from a bi-level machine. So a few days ago I started using one (a Resmed VPAP III), and I'm having a terrible problem. After a fe...