Be aware that AHI is only one sleep quality metric, which indicates the total number of apneas and hypopneas
only, divided by the total hours of sleep for the recorded session.
Also, the "total time in apnea" reported at the bottom of the "statistics" section in the "details" tab of the sidebar is often a more useful indicator of session sleep quality than the actual number of apnea events detected. This because the machine may detect and address many of the OSA events without arousal from sleep. The "events" tab provides better visibility to the duration of each event detected and recorded.
Your OSCAR reports indicate that Respiratory Effort-Related Arousal (RERA) events are also being detected, which are also likely detrimental to your sleep quality. The ResMed AirSense AutoSet machines are capable of detecting and recording RERA events by monitoring the combination of flow limitation and increased effort, but they do not respond to them directly. However, as shown in your most recent report, it's possible—and even likely—that optimizing your OSA therapy may reduce RERA occurrence too. More
general info on RERA here, if interested.
It's important to note that RERA events are
not included in reported Apnea Hypopnea Index (AHI) for the session.
It's great that your working on reducing the leaks. Notice in the Leak Rate graph in your first shared OSCAR report how the leaks were brief in duration and relatively low flow. But in your more recent report the leaks are both sustained and with significantly greater flow. These are the kinds of leaks that are more likely to impact ability of the machine to respond to OSA and hypopnea events. They're also more likely to arouse you from sleep.
Also note the dotted red line making an appearance at the top of the most recent Leak Rate graph. ResMed designates any leak that exceeds 24 liters per minute as a Large Leak (LL) event and will flag it as such in the report.
Regarding dialing in APAP pressure settings to the tightest effective band: It's generally good practice to start by setting the minimum machine pressure a bit below the average median pressure reported over several sessions in OSCAR, and setting the maximum machine pressure a bit above the 95% pressure reported in OSCAR. The greater the time period for your OSCAR history, the more practical this method seems to be.
Basically you want the machine pressure to be able to meander as tightly as practically possible between min and max pressures without bouncing off of the ceiling and floor.
Your most recent report looks pretty good. You might give yourself a few days to get used to the new pressures. If it continues to look like this you might even trying creeping up a bit more on your min pressure to 10 or so, and perhaps down on your max to 16.
