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narrowing pressure ranges yields worsening results
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OpalRose Offline

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Machine: PR System One REMstar Auto 560 with A Flex
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10 For Her
Humidifier: REMStar heated humidifier with heated hose
CPAP Pressure: Auto Cpap 10-13 AFLEX 1
CPAP Software: SleepyHead EncoreBasic

Other Comments: Started CPAP Therapy October 23, 2014

Sex: Female
Location: Northeast Ohio, USA

Post: #11
RE: narrowing pressure ranges yields worsening results
(12-03-2015 01:31 PM)StoopidMonkey81 Wrote:  
(12-03-2015 12:57 PM)OpalRose Wrote:  I still don't see a reason to raise max pressure.

On the first graph it actually hits the max during a spike at 6:25AM. I take it as long as the max is very brief and doesn't "stay there" and flatline like a maxed out CPU then there's no need to raise the limit?


Correct. If you notice the APAP responded after the OA and Hypopnea event, then came back down.
If the pressure stays at your max setting for a long time during the night, then that's an indication it wants to go higher, sometimes not in response to an apnea event but in response to snores and flow limitations.

OpalRose
12-03-2015 02:00 PM
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zonk Offline

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Posts: 7,908
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #12
RE: narrowing pressure ranges yields worsening results
(12-03-2015 12:57 PM)OpalRose Wrote:  I also notice you still have some leak issues, and doesn't look like your sleeping more than a couple hours. Thinking-about
You cannot evaluate any thing until your sleep quality improved and not sleeping without the machine
You'll need to figure it out, whether its comfort issues, such as mask doesn't feel right or comfortable,
too much or too little humidity and pressure relief
12-03-2015 02:37 PM
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StoopidMonkey81 Offline

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Posts: 67
Joined: Oct 2015

Machine: ResMed AirSense 10 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed AirFit P10
Humidifier: Integrated + ClimateLineAir Tube
CPAP Pressure: 9.8-14, EPR 3
CPAP Software: SleepyHead

Other Comments: Started therapy November 20, 2015

Sex: Male
Location: NJ

Post: #13
RE: narrowing pressure ranges yields worsening results
(12-03-2015 02:00 PM)OpalRose Wrote:  
(12-03-2015 01:31 PM)StoopidMonkey81 Wrote:  
(12-03-2015 12:57 PM)OpalRose Wrote:  I still don't see a reason to raise max pressure.

On the first graph it actually hits the max during a spike at 6:25AM. I take it as long as the max is very brief and doesn't "stay there" and flatline like a maxed out CPU then there's no need to raise the limit?


Correct. If you notice the APAP responded after the OA and Hypopnea event, then came back down.
If the pressure stays at your max setting for a long time during the night, then that's an indication it wants to go higher, sometimes not in response to an apnea event but in response to snores and flow limitations.

Noted. Is the opposite also true, in that if the APAP pressure never flatlines on the minimum, touching it only briefly before jumping up to a higher pressure, is that a sign that there is no reason (apart from initial comfort) to lower the minimum?
12-04-2015 08:50 AM
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OpalRose Offline

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Posts: 3,181
Joined: Nov 2014

Machine: PR System One REMstar Auto 560 with A Flex
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10 For Her
Humidifier: REMStar heated humidifier with heated hose
CPAP Pressure: Auto Cpap 10-13 AFLEX 1
CPAP Software: SleepyHead EncoreBasic

Other Comments: Started CPAP Therapy October 23, 2014

Sex: Female
Location: Northeast Ohio, USA

Post: #14
RE: narrowing pressure ranges yields worsening results
(12-04-2015 08:50 AM)StoopidMonkey81 Wrote:  
(12-03-2015 02:00 PM)OpalRose Wrote:  
(12-03-2015 01:31 PM)StoopidMonkey81 Wrote:  On the first graph it actually hits the max during a spike at 6:25AM. I take it as long as the max is very brief and doesn't "stay there" and flatline like a maxed out CPU then there's no need to raise the limit?


Correct. If you notice the APAP responded after the OA and Hypopnea event, then came back down.
If the pressure stays at your max setting for a long time during the night, then that's an indication it wants to go higher, sometimes not in response to an apnea event but in response to snores and flow limitations.

Noted. Is the opposite also true, in that if the APAP pressure never flatlines on the minimum, touching it only briefly before jumping up to a higher pressure, is that a sign that there is no reason (apart from initial comfort) to lower the minimum?


You can lower the minimum if your therapy warrants it, but it serves no purpose to have a minimum pressure set too far below the medium or 90% pressure, because the APAP will take longer to reach the pressure needed to open your airway.

My PR SystemOne does this "hunt and peck" thing, meaning it never a stays at my start pressure for any length of time. It will raise pressure approximately 1.5cm and then goes back down when nothing it detected, meaning no FL, RERAs, Snores that may indicate an upcoming apnea event.

It doesn't do this continuously, because I can see where is will go back to starting pressure and stay there for short periods of time, only to start its "hunt and peck" again.

I don't know for sure how ResMed APAP's work in that regard.

OpalRose
(This post was last modified: 12-04-2015 09:29 AM by OpalRose.)
12-04-2015 09:28 AM
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PaytonA Offline
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CPAP Software: ResScan SleepyHead

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Sex: Male
Location: Orange County,California

Post: #15
RE: narrowing pressure ranges yields worsening results
I agree with Zonk. You need to concentrate on whatever is causing you to not use the CPAP all night long. With incomplete nights of machine use there are a number of variables added that make what we see in the data very questionable. As an example, the CAs may be sleep-wake junk whether you feel that is true or not. If you removed the CAs, your graphs would look a lot better except for the leaks. What are the issues that keep you from using the CPAP all night long?

Best Regards,

PaytonA
12-04-2015 01:32 PM
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