Hi Rich, welcome to Apnea Board!
Certainly an AHI of 9.2 is better than the AHI during your sleep study of 30.2.
Yes, the AHI reported in S9 units includes both obstructive and suspected central events. In order to see how many obstructive vs. central events you have, you can download and install the free ResScan software for your personal computer. You'll also need an SD card reader (if your computer doesn't already have one). Read more about how to obtain the ResScan software HERE
. There is also a non-proprietary free software called SleepyHead which will perform many of the same functions as ResScan. Some believe it to be easier to use as well. You can read about how to obtain SleepyHead software HERE
Normally, the goal of CPAP is to get your overall AHI down below 5.0. Your 9.2 is a bit high... however, don't worry about that just yet
. One night does not a trend make. We usually recommend that a patient try out their prescribed pressure for at least a week or two before making any changes. And, as always, if you decide a pressure change might be needed, know what you're doing first and always communicate with your sleep doctor so you can get their input as well. Also, be sure to first read through this page on Changing Pressures (HERE
You may wish to obtain the Clinician Manual for your machine, which explains how to change pressures and other settings on your specific CPAP. You can ask for that via email by following the directions HERE
I would also recommend that you read through as many of the longer threads here in the forum as you can. You can use the Search
function (link at top of all forum pages) to help look for specific threads that may relate to any issues you have. If you can't find an answer by searching, most of the members of Apnea Board are more than willing to help answer questions or address issues you may have. Just ask.