[CPAP] S9 Resmed auto setting not working

[oak]

"Now if you get up out of bed or decide to lay awake for some time, as you said 15 minutes, maybe it's a good idea to turn the machine off so it's not skewing your data."


Does this mean that if you lie awake for an hour trying to get to sleep with the mask on, that it will skew your data? I have had AHI's of less than 5 every nite since I started, but I do lie awake when going to bed for an hour or so.

[gogailg5]

I see. However I noticed that the your wake time impacts ur AGO. If u lie awake for 15 minutes it will lower it AGO. I wake up several times a night. So I use numbers of events

You're right that if you have periods of wakefulness your data will show a lower overall AHI. However, without time as a frame of reference, the total event count doesn't mean anything.

I wake up several times a night myself, to turn around / change positions or whatever. Most people probably do, especially coming out of REM sleep. I wouldn't worry about that... I don't think AHI has to be super accurate.

Now if you get up out of bed or decide to lay awake for some time, as you said 15 minutes, maybe it's a good idea to turn the machine off so it's not skewing your data.

Ok. Right now my setting is 7.5 AHI 4.2. Tonight I will try 7.6. And like someone suggested...take it slow.

---

Has anyone heard of COAL?

[gogailg5]

I meant...has anyone heard of COAL?

---

I meant...has anyone heard of COAL?

No VPAP! Ahug spellcheck

[RonWessels]

Does this mean that if you lie awake for an hour trying to get to sleep with the mask on, that it will skew your data?

Strictly speaking, yes. This is where using software to look at the detailed data for the entire session is helpful. You can discount the parts of the data that you know you were awake and just look at how things went during the time when you were asleep.

Don't worry too much about it though. Let's run through some sample numbers so you can see the effect. Let's say you were using CPAP for a total of 7 hours and got an overall AHI of 5. That means there were a total of 7x5=35 events during the session. Now, assume all of those events only happened while you were asleep, and you slept for only 6 hours (ie. you were lying awake for 1 hour). That means your "true" AHI is actually 35 events in 6 hours, or an AHI of 35/6 = 5.8. So there's not a huge difference here.