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How to set correct cpap setting using apap data
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Ghost1958 Offline

Advisory Members

Posts: 957
Joined: Aug 2014

Machine: PRS1 Series Sixty Auto Aflex
Mask Type: Nasal mask
Mask Make & Model: F&P Eson
Humidifier: PRS1 with Heated Hose
CPAP Pressure: 10.5 min 16 max
CPAP Software: SleepyHead EncoreBasic

Other Comments: Moderate to Severe SA Obstructive. Rapid O2 desat off the machine.

Sex: Male
Location: KY

Post: #11
RE: How to set correct cpap setting using apap data
If you want the best setup, set you min on 90th percentile or 1 below that, and your max 2cm above if fluctuation bothers you.
Youll have a very tight pressure range but still be much better off than on straight pressure.
09-15-2016 05:39 PM
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Lanco Offline

Advisory Members

Posts: 153
Joined: Jun 2016

Machine: Resmed S9 Autoset, Apex XT Fit
Mask Type: Nasal mask
Mask Make & Model: Apex Wizard 210 & Profile Lite, Wizard 220 FFM, Nuance
Humidifier: Resmed H5i
CPAP Pressure: 8.5-17
CPAP Software: ResScan SleepyHead Other Software

Other Comments: Easy Compliance Software 3.2.1 and Easy Compliance Lite Software 3.4

Sex: Male
Location: Pensacola, Florida

Post: #12
RE: How to set correct cpap setting using apap data
(09-15-2016 05:39 PM)Ghost1958 Wrote:  If you want the best setup, set you min on 90th percentile or 1 below that, and your max 2cm above if fluctuation bothers you.
Youll have a very tight pressure range but still be much better off than on straight pressure.


Thanx Ghost

Well, the straight pressure is for if I use my other constant pressure cpap if I can't use the apap for one reason or another.

But, in either case, I thought the idea behind an apap was to have a big enough range so it covered you wherever you needed it.

Originally it was set with an initial of 4 and I had experimented having no initial but set at 6, then 7 and now 8 as it seems more comfortable to breathe now at 8. But if I set the apap 9.5 the top at two above which would be 11.5 then what about the times that the machine thinks I need to be at 12, 13, 14, 15? Wouldn't I be getting less than optimal therapy that way? Doesn't totally make sense to me.

If that were the case,then it seems now that I know what my readings are that I could set the constant pressure cpap to 11.5 which I had done before I got the apap and just retire the apap. I must be missing something hereHuhsign
(This post was last modified: 09-15-2016 08:06 PM by Lanco.)
09-15-2016 08:04 PM
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Ghost1958 Offline

Advisory Members

Posts: 957
Joined: Aug 2014

Machine: PRS1 Series Sixty Auto Aflex
Mask Type: Nasal mask
Mask Make & Model: F&P Eson
Humidifier: PRS1 with Heated Hose
CPAP Pressure: 10.5 min 16 max
CPAP Software: SleepyHead EncoreBasic

Other Comments: Moderate to Severe SA Obstructive. Rapid O2 desat off the machine.

Sex: Male
Location: KY

Post: #13
RE: How to set correct cpap setting using apap data
(09-15-2016 08:04 PM)Lanco Wrote:  
(09-15-2016 05:39 PM)Ghost1958 Wrote:  If you want the best setup, set you min on 90th percentile or 1 below that, and your max 2cm above if fluctuation bothers you.
Youll have a very tight pressure range but still be much better off than on straight pressure.


Thanx Ghost

Well, the straight pressure is for if I use my other constant pressure cpap if I can't use the apap for one reason or another.

But, in either case, I thought the idea behind an apap was to have a big enough range so it covered you wherever you needed it.

Originally it was set with an initial of 4 and I had experimented having no initial but set at 6, then 7 and now 8 as it seems more comfortable to breathe now at 8. But if I set the apap 9.5 the top at two above which would be 11.5 then what about the times that the machine thinks I need to be at 12, 13, 14, 15? Wouldn't I be getting less than optimal therapy that way? Doesn't totally make sense to me.

If that were the case,then it seems now that I know what my readings are that I could set the constant pressure cpap to 11.5 which I had done before I got the apap and just retire the apap. I must be missing something hereHuhsign

You could leave the max pressure open and it wont go higher than it needs too.
I was thinking you were bothered by pressure change. Why I suggested a tight max limit.

If your not bothered by pressue changes, set your min at about 9 or 10, leave the max open or limit it to say 18 if high pressure bothers you.

The trick is the closer your min is to your 90% pressure, the less your machine has to raise pressure to catch up.

Example my 90% is 12cm with a nasal mask.
When my apap was set to min 8 per the doc and 18 max, i regularly hit max prezsures of 15 16 17 every night.

When i bumped my min up to 10 my ahi went from 2-3 to 1 or less and machine rarely touches 13max.
The min side is where you really fine tune to make a difference. The max if your min is adjusted properly can usually be left wide open and will take care of itself.
09-15-2016 11:12 PM
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