Resmed S8 AutoSet VS. Resmed S9 AutoSet

[prefer2breathe]

I've had both of these machines for about a year now. I know that Resmed has made changes to the S9 in their algorithms. On mine, I've noticed that the S9 does not nearly have as much Hypopneas as with the S8. But I've also noticed that the S9 reports a lot more AI's than the S8. Has anyone else noticed this? On the S8, a lot of times my AI is below 1.0 or a little over. My HI's are higher though. On the S9, my HI's a drastically lower but my AI's are usually between 2 and 4. Is this just the way the S9 algorithms decipher what is what or is it that my treatment isn't as good on the S9?

[ozij]

I've had both of these machines for about a year now. I know that Resmed has made changes to the S9 in their algorithms. On mine, I've noticed that the S9 does not nearly have as much Hypopneas as with the S8. But I've also noticed that the S9 reports a lot more AI's than the S8. Has anyone else noticed this? On the S8, a lot of times my AI is below 1.0 or a little over. My HI's are higher though. On the S9, my HI's a drastically lower but my AI's are usually between 2 and 4. Is this just the way the S9 algorithms decipher what is what or is it that my treatment isn't as good on the S9?

It's the way the algorithm deciphers.

[Muse-Inc]

I just finished my first 3 months on my S9 AutoSet after my S8. Differences:

• AHI average: S8 1.5-2, S9 0.4 great numbers!
• AI average: S8 0-0.1, S9 0.2 interesting increase, usually clear airway events
• HI average: S8 0-2, S9 0-0.1 interesting change
• Pressure average: S8 10.5, S9 12.4 interesting 2 pt increase
• Mask leak average: S8 0-1.6, S9 0 less head movement, deeper sleep mayber?

While I slept well with the S8, I sleep even better with the S9. I thought I might as my pressure range is 9.8-16, almost always >10. The S8's A10 algorithm for me at any rate seems to have been less effective CPAP therapy compared with S9's. I can't comment on my detailed date or median/max as I have yet to acquire the software...with mumbers thiss good and how good I feel seeing detailed data doesn't seem too important right now. I've fallen into my night owl behavior again *sigh* and am not getting as many hrs of sleep as I need, working on that and getting regular exercise tops my list of priorities right now.

Overall, I'd say my treatment with the S8 AutoSet was great and with the S9 excellent.

[prefer2breathe]

Thanks for sharing Muse-Inc.!! I don't know why my numbers are so different from the S8 to the S9. Settings are all the same. I know that the S9 changed their algorithm so that its doesn't report so many HI's. But in my case, it not only decreases my HI's but increases my AI's. With my S8, I almost always have 1.0 or less for AI. On my S9, its always between 2 and 4. Does this happen to anyone else or is it just me?? The only thing that I can think of that is different is that I'm using my heated hose on the S9 and maybe the extra heat and humidity does something to me...not sure. On the S8, I have my humidity set at 1.5. Any thoughts?

[Muse-Inc]

Could be the S9 is more sensitive in reporting AI than the S8. I almost never had AI using the S8, using the S9 I do. Likely there were always there remember a certain number of AI is normal for anyone and the S9 detects them.

[archangle]

Get SleepyHead or use your Resscan and look at your hyponeas. How "real," how long, and how severe do they look to be. All apneas are not the same. A 120 second apnea does a lot more damage to your than an 11 second apnea. One where you completely stop breathing is much worse than one where you still breathe a little.