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ResMed VPAP Adapt confusing results
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terp1984 Offline

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Posts: 45
Joined: Apr 2012

Machine: ResMed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed S9 H5i
CPAP Pressure: EPAP 5 to 15, IPAP 10 to 35
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: South Carolina

Post: #1
ResMed VPAP Adapt confusing results
I had been using a ResMed S9 VPAP S for almost two years. For most nights, the SleepyHead software reported numerous OA (Obstructive Apnea) and CA (Clear Airway or Central Apnea) events (about equal number of each). There were occasional H (Hypopnea) events, but almost never any A (Apnea) events.

I have been using a ResMed S9 VPAP Adapt for about 10 days. The SleepyHead software now reports numerous A events and some H events, but never any OA or CA events. As I understand it, ResMed reports an A event when it cannot distinguish between a CA and OA event.

One of the selling features of the VPAP Adapt is that it can distinguish between OA and CA events and respond accordingly. But, in this case, it is unable to do the former, so how is it ever going to be able to do the latter?

On the one hand, my old machine seemed to have no problem distinguishing between OA and CA, but was unable to deal with the different events. On the other hand, the new machine is supposed to be able to deal with the different events but is unable to recognize them.

Am I missing something here?
10-18-2013 06:39 AM
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skyler Offline

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Posts: 75
Joined: May 2013

Machine: Respironics ASV
Mask Type: Nasal mask
Mask Make & Model: Respironics Wisp
Humidifier: System One Respironics
CPAP Pressure: 8-12-20
CPAP Software: Not using software SleepyHead

Other Comments: Diagnosed February 2008

Sex: Undisclosed
Location: Norfolk, Virginia

Post: #2
RE: ResMed VPAP Adapt confusing results
I agree that is puzzling. All things between machines- settings- being equal the only thing I can think of is to let the machine get to know you better.
I have a Respironics ASV and have been able to dial in pressures to reduce my ahi by checking the epap numbers and pressure support numbers. Since you have been on ASV for several years you already know about titrating. How numerous is numerous- can you list your total AHI regardless of the breakdown between kinds of events, please?

I gave my ASV 6 months for us to acclimate to each other (it took three), perhaps it's just going to take more time with the new machine. Perhaps with some research we can find out what is different in machine software, and I guess firmware. Sorry I don't have something more concrete to suggest. Keep us posted, please. I would like to see where this goes, Terp1984.
10-18-2013 08:07 AM
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terp1984 Offline

Preferred Members

Posts: 45
Joined: Apr 2012

Machine: ResMed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed S9 H5i
CPAP Pressure: EPAP 5 to 15, IPAP 10 to 35
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: South Carolina

Post: #3
RE: ResMed VPAP Adapt confusing results
For the last 10 days, my AHI has been as high as 9.38 and as low as 1.06 with a 4.31 average. There is no doubt that I now have a better machine, I have just been surprised by the results so far.
10-18-2013 09:09 AM
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LOVEDOG Offline

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Posts: 27
Joined: Oct 2012

Machine: Resmed ASV Adapt
Mask Type: Nasal pillows
Mask Make & Model: P-10
Humidifier: H5i/Climateline
CPAP Pressure: eep 6-ps15-4
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Undisclosed
Location:

Post: #4
RE: ResMed VPAP Adapt confusing results
(10-18-2013 09:09 AM)terp1984 Wrote:  For the last 10 days, my AHI has been as high as 9.38 and as low as 1.06 with a 4.31 average. There is no doubt that I now have a better machine, I have just been surprised by the results so far.

terp.....This is me!! I am about to have my 3rd night on ASV. But I am having the same results as you........a lot of hypopneas and apneas, no centrals or osa. But the desats are gone. I, like you do not understand why more hypopneas and why can't the machine distinguish between osa or centrals??? However I too, am sleeping better. I guess time will tells us more, and we will also learn more as we go along.... hopefully. My ahi was 2.1 last night.

Glad to know that someone else is in my boat! keep me posted and I will do the same.

LOVEDOG
10-18-2013 11:12 PM
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terp1984 Offline

Preferred Members

Posts: 45
Joined: Apr 2012

Machine: ResMed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed S9 H5i
CPAP Pressure: EPAP 5 to 15, IPAP 10 to 35
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: South Carolina

Post: #5
RE: ResMed VPAP Adapt confusing results
My AHI for the last three nights was 3.01, 2.15 & 2.18. I seem to be getting closer to my optimal settings. Currently using the following:
Mode: ASVAuto
Min EPAP: 9
Max EPAP: 12
Min PS: 3
Max PS: 10
However, the high airflow is really drying out my mouth despite using Biotene. In any case, getting back to the original issue of this thread, after 15 days, still only "A" and "H" events and no CAs or OAs.
One thing though that is particularly impressive is that even though the IPAP is maxed out at 22, according to SleepyHead, the Medium IPAP is 15.28. I really like that I only get the pressure I actually need when I need it.
10-23-2013 06:56 AM
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RonWessels Offline

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Posts: 465
Joined: Jun 2013

Machine: REMstar Auto AFlex DS560TS
Mask Type: Nasal mask
Mask Make & Model: ComfortGel Blue
Humidifier: REMstar Heated Tube DS6T
CPAP Pressure: 11 - 20
CPAP Software: SleepyHead

Other Comments: CMS50F Pulse Oximeter

Sex: Male
Location: Ontario, Canada

Post: #6
RE: ResMed VPAP Adapt confusing results
If your IPAP pressure is regularly maxing out in SleepyHead plots, you should consider increasing its limit. That means that the machine probably thinks that, on occasion, it needs a pressure higher than 22 to prevent your apneas. That might be where you are going to get that last point or two of AHI reduction. Although what you are getting now is perfectly serviceable.
10-23-2013 01:46 PM
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Peter_C Offline

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Posts: 1,308
Joined: Sep 2013

Machine: System One DS960HS
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro "MED"
Humidifier: Attached
CPAP Pressure: Auto mode-script is:15/3/3
CPAP Software: EncoreBasic Other Software

Other Comments: Severe obstructive sleep apnea 1999/Just got an ASV machine

Sex: Male
Location: Akron, Ohio USA

Post: #7
RE: ResMed VPAP Adapt confusing results
(10-23-2013 01:46 PM)RonWessels Wrote:  If your IPAP pressure is regularly maxing out in SleepyHead plots, you should consider increasing its limit. That means that the machine probably thinks that, on occasion, it needs a pressure higher than 22 to prevent your apneas. That might be where you are going to get that last point or two of AHI reduction. Although what you are getting now is perfectly serviceable.

I was thinking the same thing. Ron beat me. I guess I wonder why you would limit the high end, when the machine won't use it unless it believes you need it?

*I* am not a DOCTOR or any type of Health Care Professional. My thoughts/suggestions/ideas are strictly only my opinions.

"Only two defining forces have ever offered to die for you. Jesus Christ and the American Soldier. One died for your Soul, the other for your Freedom."
10-23-2013 09:33 PM
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terp1984 Offline

Preferred Members

Posts: 45
Joined: Apr 2012

Machine: ResMed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: ResMed Quattro FX
Humidifier: ResMed S9 H5i
CPAP Pressure: EPAP 5 to 15, IPAP 10 to 35
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: South Carolina

Post: #8
RE: ResMed VPAP Adapt confusing results
Valid question Peter. When I first used this machine the limit was the max allowed. The airflow oscillations were killing me. So, I limited the range to 15 and gradually increased it. I fully intend to continue to increase the pressure, but I'm not there yet.
10-25-2013 03:15 PM
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Peter_C Offline

Advisory Members

Posts: 1,308
Joined: Sep 2013

Machine: System One DS960HS
Mask Type: Full face mask
Mask Make & Model: Mirage Quattro "MED"
Humidifier: Attached
CPAP Pressure: Auto mode-script is:15/3/3
CPAP Software: EncoreBasic Other Software

Other Comments: Severe obstructive sleep apnea 1999/Just got an ASV machine

Sex: Male
Location: Akron, Ohio USA

Post: #9
RE: ResMed VPAP Adapt confusing results
Makes sense. Sorry, read so many posts that I sometimes forget the entire thread.

*I* am not a DOCTOR or any type of Health Care Professional. My thoughts/suggestions/ideas are strictly only my opinions.

"Only two defining forces have ever offered to die for you. Jesus Christ and the American Soldier. One died for your Soul, the other for your Freedom."
10-25-2013 04:36 PM
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