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Pressure increases for no reason?
#1
Pressure increases for no reason?
Hello all. New to the sleep apnea world. Why is it sometimes my pressure on my mask goes up while I'm asleep, yet I'm having no apneas? Here are some pictures from sleepyhead. You can see my pressure ramps up to 8 as I use a 25 minute ramp, and I fall asleep some where in between, but then it suddenly starts going up even though theres no apnea events detected. Any idea why this machine would just raise the pressure for no reason? At the end there, I finally get woken up by the pressure, or get woken up by something feeling ill. Not sure why my machine decided to go from 8 pressure to 11 for no reason.

http://www.imgur.com/a/jre7h
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#2
RE: Pressure increases for no reason?
(03-11-2018, 06:43 AM)xeno Wrote: Hello all. New to the sleep apnea world. Why is it sometimes my pressure on my mask goes up while I'm asleep, yet I'm having no apneas? Here are some pictures from sleepyhead. You can see my pressure ramps up to 8 as I use a 25 minute ramp, and I fall asleep some where in between, but then it suddenly starts going up even though theres no apnea events detected. Any idea why this machine would just raise the pressure for no reason? At the end there, I finally get woken up by the pressure, or get woken up by something feeling ill. Not sure why my machine decided to go from 8 pressure to 11 for no reason.

imgur.com/a/jre7h

 We need your "Details" left-hand sidebar, AND the Flow Limitations graph to get a better idea of whats going on. Please repost with those added.

In MY case, my pressure jacks itself up quickly due to Flow Limitations (even some fairly small ones), which can be clearly seen on that chart.

From top to bottom we need:

Event Flags
Flow Rate
Pressure
Leak Rate
Flow Limit.
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#3
RE: Pressure increases for no reason?
Hi zeno and Welcome to the forum.
The machine will also increase pressure in response to Flow Limitations and Snores.  Without seeing the events graph and the statistics on the left side bar, we are just guessing.

If you would use the attachment feature instead of imgur and use the links below in my Signature Line for instruction on arranging SleepyHead graphs and posting here, then we can take a better look.
OpalRose
Apnea Board Administrator
http://www.ApneaBoard.com

_______________________
OSCAR Chart Organization
OSCAR - The Guide
Soft Cervical Collar
Optimizing therapy





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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#4
RE: Pressure increases for no reason?
Hello and thank you for your replies. I went back to sleep, only to wake up to 15 pressure again for seemly no reason! I would appreciate any help into investigating this matter. I think I have arranged the graphs correctly this time.


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#5
RE: Pressure increases for no reason?
(03-11-2018, 07:48 AM)xeno Wrote: Hello and thank you for your replies. I went back to sleep, only to wake up to 15 pressure again for seemly no reason! I would appreciate any help into investigating this matter. I think I have arranged the graphs correctly this time.

Ok, try one more time after clicking on the ^ next to Sun on the top left calendar. That will shrink the monthly calendar up, so we can see the detail stats below it. Also, move "Mask Pressure" graph down low enough so we don't even see it, which will cause the others to move up a bit.

Thanks!

P.S. See the squiggly line at 3:40am, and then later at about 4:35am of the "Flow Limit." graph just before your pressure increase? That's what right now appears to be driving up your pressures. That's considered a precursor to an apnea.
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#6
RE: Pressure increases for no reason?
You are experiencing some Flow Limitation.  I don’t see the snore graph or snore information on the left side, which will also cause the pressure to rise.

Next time, elimate the calendar.

Question, you only showed us a two hour range. Is that all you slept?

You can try to lower the max setting to limit the machine from raising pressure.
Your pressure is too wide open anyway. I would suggest minimum 9 and maximum 12. Also, set ramp to start at 7 for a short period of time.
OpalRose
Apnea Board Administrator
http://www.ApneaBoard.com

_______________________
OSCAR Chart Organization
OSCAR - The Guide
Soft Cervical Collar
Optimizing therapy





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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#7
RE: Pressure increases for no reason?
It might also help to have your history; sleep study results.  The machine will go up in pressure when it detects obstructions so you may have some issues that the machine is taking care of and you just don't know it.
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#8
RE: Pressure increases for no reason?
Thank you for all of your help everyone. I believe I followed the instructions clearly. Also yes, I have only slept a few hours so far. I keep waking up feeling ill (this is a normal thing as of the last 6 months, which is why I got my sleep study and diagnosed with moderate obstructive sleep apnea). However, I am not sure why I keep waking up feeling ill when this program shows no apneas but somehow the pressure increases. Very confusing. I will also try adjusting the pressure to what Opal suggested and see how that works. Here's the graph again, any more info you guys can give?


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#9
RE: Pressure increases for no reason?
(03-11-2018, 08:30 AM)xeno Wrote: Thank you for all of your help everyone. I believe I followed the instructions clearly. Also yes, I have only slept a few hours so far. I keep waking up feeling ill (this is a normal thing as of the last 6 months, which is why I got my sleep study and diagnosed with moderate obstructive sleep apnea). However, I am not sure why I keep waking up feeling ill when this program shows no apneas but somehow the pressure increases. Very confusing. I will also try adjusting the pressure to what Opal suggested and see how that works. Here's the graph again, any more info you guys can give?

It's your Flow Limitations that are driving your pressure increases. They are precursors to apnea's, so the machine jacks up the pressure to try to stop it going into a full-blown apnea.

Also realize that Sleep Apnea is not the only thing out there that causes sleep disturbances. It's a good start to finding out what is causing you to feel ill, but you might need to follow up with the doctor to find out what's next.

I encourage you to make the change Opal suggested, AND to start increasing your sleeping time with your machine turned on while wearing your mask. Keep a sleep diary if need be, I use the "Notes" tab on Sleepyhead to keep detailed notes on my nights. Such as if I changed the pressure, what meds I took before bed that particular night, do I remember more leaks, during the night, did I feel ok that morning or sicker/more tired that morning etc, etc. It really helps keeping track from night to night.
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#10
RE: Pressure increases for no reason?
Agree, very good idea on keeping a sleep diary.  I did that in the beginning of my therapy, as I would tend to forget how I felt after making changes, unless recorded somewhere.  

Once you make that change to your pressure, take note if you see apneas occurring.  Then you may have to adjust the pressure to compensate.  

As far as feeling ill upon waking after 6 months on Apap, I suggest if you haven't done so already is to see your doctor and get a complete physical checkup.
Have you had your Thyroid checked?  What about Vitamin D levels?
OpalRose
Apnea Board Administrator
http://www.ApneaBoard.com

_______________________
OSCAR Chart Organization
OSCAR - The Guide
Soft Cervical Collar
Optimizing therapy





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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