My doc prescribed (and re-prescribed) BPAP based on the original sleep study. Insurance won't approve any further sleep-med-related expenses unless I have another sleep study, and I'm not in the mood to pay my large share of the cost. It's cheaper to go gray market.
So I have this ResMed VPAP (S8) Auto 25 w/ humidifier & case. Estate sale, 22 hours total use, $200 - great deal, sad story - seller explained "My mom died right after she got that thing." It's a lot more complicated than the straight-up CPAP. My prescribed settings are 12 and 8.
So I monkeyed around with it and think I've got some workable settings. I went for VAuto mode with upper I (inhalation max) of 14 cm and lower E (exhalation min) limit of 6 with a "pressure support" (i.e. the max difference between inhalation and exhalation pressures) of 4 cm. My understanding is that the machine is supposed to be semi-auto, finding the best pressures for you within the ranges that are set.
Then there's triggering, cycling, rise time adjustment and inspiratory time control. Since I have little to no idea what those are, I left the settings at the factory defaults. Can any of you shed some light on these terms/settings?
I could just set this thing on vanilla BPAP, 12/8. But I figured my needs might have changed since that sleep study in 2009, so I thought I'd let it try to find optimal settings. With the settings made, I slept surprisingly well last night, soundly, although I'm more tired than usual today.
Finally my questions:
1. This thing is supposed to have a data card (but it's missing). Will any SD card work? The ones I see online for this thing look weird, like an SD card with a spatula handle attached. One seller said they don't have the ResMed S8 cards for sale anymore since the S8 line is discontinued.
2. Anybody have any advice or suggestions to offer me about setting this thing up or using it? I'm pretty much on my own here. My doc is cool about giving me the prescriptions for the equipment & supplies, but he admits he knows nothing about xPAP therapy.
Thanks for your ideas! --Chuck