ahi variation - why

[sleepyham]

Over the last 30 days (nights) my reported AHI has varied from 2.3 to 12 with an average of about 6. The hours of usage is averaging 8 hours per night with a minimum of 7 hours and a maximum of 9 hours.

Why does the AHI vary so much and what can I do about it assuming I need to?

Before commencing CPAP my AHI was 26

[palerider]

Sorry, crystal ball is cloudy, see below and post some charts.

[sleepyham]

OK, which charts would be most useful?

[LSAT]

OK, which charts would be most useful?

https://sleep.tnet.com/resources/sleepyhead/shorganize

[zonker]

OK, which charts would be most useful?

the answer lies within the links at the bottom of palerider's post.

[Pugsy]

These charts in this format shown here
viewtopic/t158560/How-to-post-images-for-review.html

If someone needs to see anything else they will just ask.
Please don't try to include all the graphs with a half a dozen images. You can get all the basics on one image.
Worry about anything extra someone might need later.

[sleepyham]

Last night's data plus one from when ahi was much higher.

[sleepyham]

it should be obvious but I put the screen shots in the wrong order. The worse case one was 17th July and appears first followed by last nights25 July

[Wulfman...]

Over the last 30 days (nights) my reported AHI has varied from 2.3 to 12 with an average of about 6. The hours of usage is averaging 8 hours per night with a minimum of 7 hours and a maximum of 9 hours.

Why does the AHI vary so much and what can I do about it assuming I need to?

Before commencing CPAP my AHI was 26

We don't sleep the same every night. Lots of things can cause variations........from sleeping positions to what we eat.
Maybe increasing minimum pressure in your case might help. It appears that in the first report, your CAs were significant and seemed to spike with your pressure (except for that one long period of them). So, that's not consistent, but if the CAs are a result of your mouth falling open, you may need to address that situation. Too many unknowns to try to determine from just looking at a couple of reports.


Den

.

[djams]

These charts in this format shown here
viewtopic/t158560/How-to-post-images-for-review.html

Must not have seen this?