why mach doesn't lower press. after reaching press. of 12

[dal09]

First post here. Mach M series Aflex, ultra mirage FF mask, heated humidifer on3, Encore viewer software:
Mach setting 7-12, Aflex 3 Example 1 nite results: Average press 90% @ 12 w/5 events at that level.
Question; Why does mach. not lower the press after reaching max 12? I usually wakeup and have to turn mach off. For the 1 nite AHI 6.0 leak rate 30;equal to mask rate. No large leaks, no non responsive apnea's, number of apnea's varying during the nite. Usual length of run 6hrs.
Should I raise the max to 13. Sleep study indicated that 9.0 stopped my apnea's, but software indicates some still occurring at 12. Minutes at 12 for this nite 67

[BlueHairBob]

This is a problem I had with my M Series Auto CFlex as well. My belief is that in my case, the higher pressure actually causes me to have events. My machine was not able to react in the way that I think was necessary - to back down the pressure until I started breathing again. My sleep study indicated that my AHI went up at pressures above 9. This machine did not appear to take that into account.

My impression is that the issues are better understood now than they were 3 years ago when I got that machine. My new machine (that I got 3 weeks ago) takes the induced apneas into account. Now I do see the pressure drop appropriately and I have lower AHI than I ever did with the M Series Auto. The algorithms used by my new machine work much better for me.

[jdm2857]

You may also be having snores or flow limitations when the pressure is 12 which stops the machine from lowering the pressure.

Can you post sample data from a night or two? You have to upload your image to a photo sharing site and post the IMG link. Ask if you need detailed instructions.

[Wulfman]

First post here. Mach M series Aflex, ultra mirage FF mask, heated humidifer on3, Encore viewer software:
Mach setting 7-12, Aflex 3 Example 1 nite results: Average press 90% @ 12 w/5 events at that level.
Question; Why does mach. not lower the press after reaching max 12? I usually wakeup and have to turn mach off. For the 1 nite AHI 6.0 leak rate 30;equal to mask rate. No large leaks, no non responsive apnea's, number of apnea's varying during the nite. Usual length of run 6hrs.
Should I raise the max to 13. Sleep study indicated that 9.0 stopped my apnea's, but software indicates some still occurring at 12. Minutes at 12 for this nite 67

One night isn't much to go on.
As mentioned, leaks, snores and the other events will drive an Auto nuts trying to keep up. The combination could be keeping your pressure at the upper limit. If you raise the upper limit, it would probably keep continuing to hit the upper limit due to the increased leaking at higher pressures.

I'd suggest setting it in CPAP mode in a single pressure somewhere between 9 and 12 and see what the reports look like for a few nights. Then, adjust from there.


Den

[dal09]

Please post detailed instructions on upload to photo site and whatever IMK link is.
I have My pictures and Picasa 3 How do you get Encore Viewer to move data? Thanks for the info presented!

[jules]

what are the settings on your machine? please list all of them ---

[jdm2857]

1. Use the Print Screen key to copy the screen image to the clipboard.
2. Open a paint or photo editing program and paste the clipboard into a new document.
3. Crop the image to remove personal information.
4. Save the image as a .jpg.
5. If you don't already have one, create a free account at a photo-sharing website. Many use http://www.photobucket.com.
6. Upload the image to the sharing site.
7. Copy the IMG link to the image from the photo sharing site. (The IMG link is a URL surrounded by IMG tags.)
8. Past the copied link into your cpaptalk post.

It sounds more complicated than it is. If you need more assistance, post back.

[dal09]

[Couldn't get image to appear?
This the data that you ask for I think.. Never done this! We shall see if it works?

Settings: Min 7 to max 12 auto on Comfort Aflex Aflex 3 Auto ramp .05 min auto ramp 5 mask alert off auto off is on split nite time off ahi/leak off patient reminder off


Encore Viewer Software
summary of daily events per hour
5 days of data 90%
Press 5 6 7 8 9 10 11 12
Map .5 1.1 925.5 470.9 379.5 222.2 89.2 184.6 Min. at press.
% 0 .1 47.7 20.7 16.7 9.8 3.9 8.1
FL 0 0 .5 .5 .6 .3 .7 0 Flow limitation
VS 0 0 2.6 4.7 4.1 8.6 14.1 15.9 Viboratory snores
NR 0 0 0 0 0 0 0 0 Non reactive apneas
OA 0 0 .8 3.1 2.5 4.9 6.7 8.1 Obstructive apneas/hypopneas
H 0 0 2.3 3.6 3.2 1.1 0 .3 Hypopneas
AHI 0 0 3.1 6.7 5.7 6.0 6.7 8.4 Apnea/hypopnea index



This data is what would show in the image if appears! Sorry

[jdm2857]

I was really hoping to see some Encore graphical data for a typical night or two.

[dal09]

What am I looking for or photobucket to post an image?

[Pugsy]

IMG code. The whole line including the beginning IMG brackets and the ending.

What am I looking for or photobucket to post an image?

[dal09]

I have the IMG code for the image, but Cpap won't let me submit it.

[Pugsy]

I have the IMG code for the image, but Cpap won't let me submit it.

your account doesn't seem to be registered. Go ahead and register, update your user account profile with your equipment, then see if you can paste the IMG code.

Your account as to be registered (and you logged on) before you can paste IMG links or URL links.

[JimIllinois]

One small tidbit..

You said when the pressure wakes you up, you turn the machine off. I think your machine has a ramp button. If you have the ramp set at a comfortable pressure, just hit that button and go back to sleep. The pressure drops to the ramp level and slowly climbs to the therapeutic level, while you go back to sleep. It's better than cycling power.

It's not optimal, but until you figure out the basic problem, it's a way to get by.