[Pressure] Applying APAP Data to CPAP Machine

[ajack]

I refer you to the titration guide and on this chart, in a lab. You would probably come away with a script. for CPAP static pressure of 11cm. You can do your own titration using the guide. You can use the min pressure from the results and keep auto to raise the pressure. when you have a bad night.
https://www.resmed.com/us/dam/documents/...er_eng.pdf
page 24
Increase CPAP ≥1 cm H2O every ≥5 mins for
obstructive apneas, hypopneas, RERAs and at
least 3 min of loud or unambiguous snoring

This is a forum of users, we all have different views on some things. I don't know how you can tell while asleep, what it feels like to have an obstructed airway and choke a little bit. This video may give an idea
https://www.youtube.com/watch?v=-gie2dhqP2c

You can see the results on the chart though. Asking how you feel is subjective and open to suggestion. Even if you reduce from AHI 60 to AHI 10. You are going to feel better, as you get some sleep.

It takes up to 12 months for your brain to heal cognitively.
https://www.medscape.com/viewarticle/806838
"These changes correlate with improvements in neurocognitive functioning. The changes may take up to a year to become evident on white matter imaging, a study shows."

If you had a 95% of 15, you would be getting try 13. It's not that the forum thinks 10 or 11 is bad. There is a general opinion to reduce the min pressure as much as possible and choke a little bit. It comes down to how many times a night do you want to choke and arouse from sleep.

[SuperSleeper]

If someone is consistently getting an AHI of around 1.0 or even lower, and they simply want the therapy to work sufficiently to help their sleep apnea, not sure why you'd want to mess a whole lot with settings.  Yeah, you can experiment with it if you like to get a finely-tuned, lowest possible AHI (which is good, of course), but at some point 'ya just gotta say it's "good enough".  (Unless you're one of those perfectionists who can't resist the urge to fiddle with settings your whole life).   

I'm averaging around 1.5 lately, and I'm pretty satisfied with that.  

[ajack]

I agree, it's good to simple. The simplest way is to look at the 7 or 30 day average of 95% and put that as the min pressure. It will be around the pressure a Lab would use for fixed or static pressure and will be right for most people. There isn't a lot recommending this and I agree, in general there a lot of tinkering and at the end of the day, still being under what would be recommended pressure.


Practice Parameters for the Use of Auto-Titrating Continuous Positive Airway
Pressure Devices for Titrating Pressures and Treating Adult Patients with
Obstructive Sleep Apnea Syndrome
https://aasm.org/resources/practiceparam...rating.pdf
APAP devices allow data transfer to computers. Some systems
provide the percentage time at each pressure while others supply
detailed pressure, leak, and sleep-disordered breathing event
information. The clinician can review data and decide on an
appropriate fixed pressure. Two commonly used indices are
maximum pressure and pressure only rarely exceeded. The 95th
percentile pressure (P95) is the pressure level exceeded only 5%
of the time. Most devices will graphically display the percentage
of time each pressure is applied and calculate pressure statistics
(such as Pmean, P95, and Pmaximum) over a selected time interval; this
allows several days worth of data to be used for selecting an
appropriate pressure. In most published studies, investigators
reviewed raw data to identify high mask leak occurrences. Many
devices respond to high leak with increases in pressure to a set
maximum.

[Dog Slobber]

Your AHI is very good, you're at the point of diminishing returns. Maybe you can clean up your Snores and Flow Limitations a bit  but no big deal.

There's not much room for drastic improvement so no point in drastic changes. 

Having said that, if you want to try to squeeze a little bit more, increase your minimum by half a CM, Then sit on it for a week. 

Sleepyhead will create a new entry under Prescriptions Changes on the Statistics page. That can be used to compare AHI, because your AHI is pretty low it's difficult to determine actual improvement over the variance in events we naturally have.

[khw210]

I'm happy with my sleep therapy. I sleep well, feel good in the morning, and, thanks to the Board, my AHIs are lower than I ever thought I'd see. But I'm a tinkerer, and tinkerers gotta tinker. I guess I'm trying to narrow in on that point of diminishing returns. 
I increased my minimum pressure last night. From 9.0 to 10.0

Last night 10.0-13.0 (AHI 0.11)
   
Previous night 9.0-13.0 (AHI 0.83)
   

[OpalRose]

It’s hard to argue with those numbers!  

[ajack]

It's surprising what 1cm of pressure can do, it cleared up a lot of junk. As you can see on the chart, you are about 1.5cm under your 95%.