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[CPAP] Two masks different AHI
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jhpowell49 Offline

New Members

Posts: 1
Joined: May 2015

Machine: Resmed Airsense 10
Mask Type: Hybrid
Mask Make & Model: Resmed Mirage Liberty
Humidifier: unsure
CPAP Pressure: 4-14
CPAP Software: Not using software

Other Comments:

Sex: Undisclosed
Location:

Post: #1
Two masks different AHI
On a Resmed Airsence 10, my 87yo mom is evaluating two masks. The masks are Resmed Mirage Liberty and the Resmed P10. Leak and pressure are virtually the same for both masks. All settings are the same except for type of mask. The ramp is auto. The Pressure Relief is always on at level 3. The min pressure is 4.4 and the maximum pressure is 7.8 (she revolts ant any pressure higher).The AHI with the P10 is 3. The AHI for the Liberty is 12. Does anyone have a possible explaination for the difference in AHI between the masks? Going to look at the data in Sleepyhead for the first time tonight. Is there anything to look for that may explain the difference?

Thanks

JP49
06-27-2015 02:50 PM
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quiescence at last Offline

Advisory Members

Posts: 753
Joined: Nov 2014

Machine: REMstar System One with Autoflex
Mask Type: Full face mask
Mask Make & Model: Quattro AirFit F10
Humidifier: yes typical setting = 4
CPAP Pressure: 5-13 Autotritrating CPAP
CPAP Software: SleepyHead EncoreBasic

Other Comments: CMS-50F Plus oximeter /w SPO2 Assistant software. Avowed mouth-breather switching to nose-breathing

Sex: Male
Location: US

Post: #2
RE: Two masks different AHI
I assume the data is from several nights for each mask. Otherwise, there is a lot of fluctuation that could account for just lucky (or unlucky) coincidence.

Look for leakage data differences between the two. If more leakage noted for the P10, this could be caused by escaping pressure through the mouth. That is my guess, and that, in general, the sleep is not as sound with this more severe leakage. Deeper sleep results in more relaxed muscles and more floppy soft tissue, leading to a higher AHI those nights with the Liberty, but also probably more rested or satisfied feeling.

QAL

Dedicated to QALity sleep.
You'll note I am listed as an Advisory Member. I am honored to be listed as such. See the fine print - Advisory Members as a group provide advice and suggestions to Apnea Board administrators and staff concerning Apnea Board operation and administrative policies. Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
(This post was last modified: 06-27-2015 04:37 PM by quiescence at last.)
06-27-2015 04:36 PM
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trish6hundred Offline

Advisory Members

Posts: 6,452
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #3
RE: Two masks different AHI
Hi jhpowell49,
WELCOME! to the forum.!
Hang in there for more answers to your question and much success to your mom with her CPAP therapy.

trish6hundred
06-27-2015 07:14 PM
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PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,068
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #4
RE: Two masks different AHI
Yes, if it is just a single night each, data is rather useless. If it is average, then we can help.

It could be the Liberty does not fit her as well and isn't providing the pressure she needs. The nasal pillows of the Liberty are not as well fitting as the P10.

Is there a setting on the machine for telling it what kind of mask the user is wearing? If so, make sure it is set to the correct mask. I am unsure as to what the Liberty would be, but probably a FFM due to the mouth covering.

PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


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06-27-2015 10:14 PM
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