I have now completed 8 nights on the ResMed S9 Autoset with H5i and ResMed Swift FX nasal pillows mask. I use a chin strap to prevent mouth breathing and I don't use the Ramp feature or the EPR (haven't tried it yet). I had a sleep study over a year ago, split session and they used a pressure of 6 cm. My AHI was 23 in test session and 2.7 in therapy session although the former lasted only 135 minutes and the latter only 22 min. My sleep doctor wanted to do another sleep study for titration but I declined (he wasn't very happy) and just got the Autoset and decided to do my own at-home titration - won't see the doctor again for a few months. I had the machine set at 4-12 and then raised the upper end to 12.6 as I seemed to be bumping up against the upper end in a couple of my sessions. My results so far have been good, at least I think so based on what I read on this board.
Usage: 51.54 with 7 days >4 hours (not sleeping all this time but I can tolerate the mask - get up once or twice a night). Median is 6.5 hours with 6.29 the average. I had one bad night due to nasal congestion where I really had a hard time breathing and took the mask off after 3 hours.
AI/AHI: AI is 1.1 (OA .5, CA .5, Unk .1) and Hypo is .3 for AHI of 1.4.
Last night was my best night with AI of .9 (OA .5 CA .4), HI .2 and AHI 1.1.
Leak: Almost nothing with median of 0 and 95th percentile of 1.2. Max leak is 132.6 which I think has to do with taking the mask off without turning the machine off first - I used the auto-on and auto-off feature so I think this affects the leak?
Pressure: Median is 8.2, 95th is 11.6 and max is 12.5 (my upper setting is 12.6). On my detailed reports I saw some high pressures around 14 but mostly lower than that.
Not sure what other data is relevant.
On 5 of 8 nights, I had more CA's than OA's. On one night I had 2.6 CA's per hour with no OA's and HA of 1.3 for an AHI of 3.9 which has been my highest. Don't know what this means if anything?
I started out with medium size pillows and switched to the small pillows on night 7 and 8. Night 7 was the bad congestion night but night 8 I did much better as the pillows were more comfortable.
I seem to experience some difficulty breathing for several minutes when I start out each night while the machine moves up from 4 cm to something closer to my Median/Average which is around 6 cm. Would it make sense to increase the lower setting say to 5 cm to help relieve this initial breathing issue?
Guess that is it - still trying to figure out what all the data means. I would appreciate any thoughts or comments anyone has.