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Looking for interpretation of OSCAR data
#1
Looking for interpretation of OSCAR data
Hi,

I've been using my CPAP consistently for about 2 years now and just don't feel much of an improvement.  I've played around with the min pressure at times but don't quite know what I'm looking at with the OSCAR data.  Is there anything that stands out that I should try?  The settings initially were the standard default ResMed 4-20, etc.

Thanks!


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#2
RE: Looking for interpretation of OSCAR data
Hi CautiouslyPessimistic! - Welcome

It appears you may be chin-tucking, thus increasing your flow limit. Resmed's use the flow limit value to determine pressure changes. Because you have your CPAP set to basically wide-open, the drastic pressure change is causing arousals. I would recommend that you set your pressure range to 8 to 12 cm and run with those setting for a few days. These setting should reduce the "wind tunnel" effect. If you keep experiencing limitations, you may wish to consider trying a soft cervical collar (SCC) to limit the range of motion of your chin.

- Red
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
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Apnea Helpful Tips

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#3
RE: Looking for interpretation of OSCAR data
I would have done that adjustment if it were me. I know I would at least (1) increase the min pressure to 7 cm, and (2) limit the maximum to somewhere near 13 cm.
Notice that it is rare, such as 00:15 on Feb 3, when the machine goes a little bonkers, that your pressure is above 13.

QAL
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#4
RE: Looking for interpretation of OSCAR data
I too would recommend trying 8-12 range for a while.
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#5
RE: Looking for interpretation of OSCAR data
Thanks everyone for the insight.  I've been doing the 8-12 for the last week or so and figured I'd attach the last 3 days of data in case anything stands out.


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#6
RE: Looking for interpretation of OSCAR data
Your numbers look great. Not included in the AHI are the flow limits and you still have some. That is about all I could suggest. 

You use EPR (exhale pressure relief) at the max of 3 but because of your min of 6 limits Epr to 2. 

Raise the min to 7 to slow the EPR to work at 3.
Apnea (80-100%) 10 seconds, Hypopnea (50-80%) 10 seconds, Flow Limits (0-50%) not timed  Cervical Collar - Dealing w DME - Chart Organizing
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#7
RE: Looking for interpretation of OSCAR data
Hi staceyburke, the OP has already changed the minimum to 8.

CautiouslyPessimistic, do you have any sense of whether pressure changes bother you? And could you say a little more about how you are still feeling? Is it daytime sleepiness, night-time restlessness, or ....?
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