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Pressure Increases w/o Events
#1
Pressure Increases w/o Events
I use a DreamStation 2 with APAP pressures at 9.5 min., 11.0 max., with A-Flex at 1.

I have recently noticed numerous pressure increases that do not appear to be in response to or have any relation to apnea, hypopnea, or other events.  This often occurs at the beginning of the night before I fall asleep, but it also occurs while I am sleeping at various times throughout the night.  I have attached OSCAR screenshots that illustrate this issue.  I am in the DreamStation 2 OSCAR test group. It was my understanding that APAP pressure increases only happen in response to events and do not occur in advance to prevent events.

Any ideas as to why this is happening or if it is something I should be concerned about.


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#2
RE: Pressure Increases w/o Events
If you are referring to the "blips" in your pressure graph, this is common on a Philips CPAP to test to see if you need a pressure increase.
Crimson Nape
Apnea Board Moderator
www.ApneaBoard.com
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Useful Links -or- When All Else Fails:
The Guide to Understanding OSCAR
OSCAR Chart Organization
Attaching Images and Files on Apnea Board
Apnea Helpful Tips

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#3
RE: Pressure Increases w/o Events
Yes, I was referring to the "blips."  Going back through my OSCAR reports, I now see that this happens every night.  I don't know why I just noticed it for the first time today.  What I don't understand is, if I am not having any events, why does the APAP perform these blips to see if I need a pressure increase?  Wouldn't the fact that I am not having events tell the machine that a pressure increase is not necessary? 

At any rate, it sounds like these "blips" aren't a problem so I won't worry about them.  Thanks for the explanation.
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#4
RE: Pressure Increases w/o Events
You need to address that question to the geniuses that designed that algorithm at Philips.  Big Grin

"Hey Marv, what if we jacked up the pressure every now and then . . ."
Crimson Nape
Apnea Board Moderator
www.ApneaBoard.com
___________________________________
Useful Links -or- When All Else Fails:
The Guide to Understanding OSCAR
OSCAR Chart Organization
Attaching Images and Files on Apnea Board
Apnea Helpful Tips

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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