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AHI Score Does Not Go Down on CPAP
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zimlich Offline

Preferred Members-2

Posts: 392
Joined: Feb 2012

Machine: Respironics PR System One BiPap Auto SV Advanced
Mask Type: Nasal mask
Mask Make & Model: ResMed gel Nasal Mask
Humidifier: System One
CPAP Pressure: 8-20 ASV, 8 EPAP,PS 12
CPAP Software: Not using software

Other Comments: I use the Quattro FFM when necessary

Sex: Female
Location: Norfolk, VA

Post: #11
RE: AHI Score Does Not Go Down on CPAP
Well done. Congratulations. Good thinking zonk.
04-09-2012 08:01 AM
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RWRPSGT Offline

Members

Posts: 8
Joined: Mar 2012

Machine: ResMed S9 Elite Autoset
Mask Type: Nasal pillows
Mask Make & Model:
Humidifier: ResMed
CPAP Pressure: 16-19.3 Auto-CPAP
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #12
RE: AHI Score Does Not Go Down on CPAP
I am wondering why they gave you an AutoSet without a pressure range?

It looks like the problem is that you are not getting enough pressure and probably need more. In order to fail CPAP during a titration, usually a pressure of 14 is reached (18 in the lab i used to work in) with no change in events.

I currently use an AutoSet S9 and I have my pressure set at 16.0 - 20.0. I have consistantly had a 0.5 to 2.5 AHI on this pressure. My AHI without PAP is about 43 events/hr. However, it may be far greater after 13 years.

Also remember that the algorithm used for AHI in PAP machines is not as accurate as the in-lab AHI because the PAP machines report from the time the machine was turned on and not from when the user falls asleep. That being said, you are probably a bit lower in actual events than what is being reported.

Hope that helps somewhat. I think your pressure is just way too low.
(This post was last modified: 05-03-2012 02:15 PM by RWRPSGT.)
05-03-2012 02:14 PM
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Theo Offline

Members

Posts: 4
Joined: Mar 2012

Machine: ResMed S9 AutoSet
Mask Type: Full face mask
Mask Make & Model:
Humidifier: ResMed H5i
CPAP Pressure: 8
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #13
RE: AHI Score Does Not Go Down on CPAP
RWRPSGT, the 8/12 numbers are working fairly well. Most nights I score less than 3; some nights around 12. Oddly, I find it I take an analgesic like Advil at bedtime, my scores are usually better. I tried higher pressure numbers, but 15 is about all I can tolerate and I did not see much change in the scores. Thanks for writing.
05-05-2012 06:01 AM
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