SleepyMcgee wrote:Ok so here is last nights...Very low AHI. Fell asleep at 11:40 and woke up at 5:22 (well, actually 4:22 but with the time change it was 5:22). Then I nodded off for another hour or so.
Could you show us the flow rate graph instead of the Time at Pressure graph?
I feel pretty much the same as the last week. No material difference. Again, felt like I slept like a log but here I am...Interesting it shows pressure pulses but I dont see the actual increase in pressure. With such low AHI's at this pressure (10) I'm hesitant to move it back down. Are you guys saying increase the upper a bit to allow for pressure pulses?
To figure out what those two little pressure blips are, could you zoom in on them AND include the Flow rate data?
They're only 0.5cm high, so it seems unlikely that they're part of the PR Search algorithm. Both of them follow a Flow Limitation flag in the Events table, and that's why it's worth zooming in on the Flow Rate data right before and right after the pressure blip.
My only guess is that the machine thought about increasing the pressure in response to the FL, but somehow the shape of the inhalations in the Flow Rate curve got worse and so the machine backed off on the pressure increase. But that's just a guess on my part. It will be interesting to see how PaleRider interprets this.
As to whether to increase the pressure or not: I'm cautious about increasing pressure. With that understanding, I would say that there in evidence that increasing your pressure settings would do diddly squat: Even if we count FL, RERAs VS, and VS2 flags as events, there no CLUSTERING of events, so objectively there's no evidence that more pressure is needed. Indeed, there are not that many events scored in the first place: There is a total of 2 Hs and 1CA in the official AHI, and if we add up the FL, RERAs, VS and VS2 flags, we get a total of 5 more "events" that are not part of the AHI. So the machine scored a grand total of 7 events of all types for the whole night. In other words, if we add everything together to create an extreme version of an RDI, we'd have an RDI of 1.44 and that's "double counting" the snores since I added both the VS and VS2 snores together as well as counting the FLI, which is not calculated in a PSG.
My guess is that if you just increase the max pressure, nothing is likely to change: Your machine is still likely to stay right at the min pressure for almost the whole night.
And if you increase the min pressure? The machine is just going to stay at the new min pressure all night, and you're not likely to see any reduction in the number of your events.
So why bother with a pressure increase? I think you'd be better off leaving the settings where they are right now and give your body and mind a chance to adjust to these settings. Reevaluate the data and how you are feeling in a week or two.
