RE: changed pressure question
(07-24-2019, 04:06 PM)Sleeprider Wrote: You seem to be doing pretty good here and I’ll comment on your original question. Your fixed CPAzpbpressure was probably set at your 90% pressure which is standard practice. Lower pressure works pretty well go a lot of people and very high fixed pressure is kind of an archaic approach in an era of good auto CPAP, but as I said it’s common.
That said I like a minimum of 8.0 for you, and would stick with EPR 2 for now.
Thanks for the feedback. So you think the 5-7 range was a fluke with it not impacting me much that night?
Go with a range of 8-14?
RE: changed pressure question
Are all OA positional or only when they are lumped together like in some of my charts? If not positional, why does the pressure not max out when they occur?
RE: changed pressure question
(07-25-2019, 02:10 PM)Sleepy8989 Wrote: Are all OA positional or only when they are lumped together like in some of my charts? If not positional, why does the pressure not max out when they occur?
Are all OA positional or only when they are lumped together like in some of my charts? No. The positional that doctors care about is from back vs. side vs. stomach sleeping, The clumping indicates chin tucking.
If not positional, why does the pressure not max out when they occur? Positional has nothing to do with pressure rising. Flow Limits, Snores, Hypopneas, and Obstructive Apneas do, depending on the extent and duration of the events as seen by your machine.
RE: changed pressure question
Here is my most recent night. I have attached the full night and zoomed in. I hade some CA events about 02:45 to 03:30. The pressure didn't increase to try to stop them. Is there a reason for this?
Thanks.
Full Night
Zoomed in
RE: changed pressure question
An APAP will not raise pressure with the detection of Clear Airway events. Raising pressure may increase Clear Airways.
The only time you should see a rise in pressure is to treat Obstructives, Hypopneas, Flow Limitation and Snores.
What is your EPR setting? Try EPR 1 or off if CA’s persist.
RE: changed pressure question
Besides what OpalRose said, your CA's are in clusters and not distributed throughout the night. This would lead me to speculate that you were probably turning over or repositioning yourself.
RE: changed pressure question
(08-01-2019, 01:52 PM)OpalRose Wrote: An APAP will not raise pressure with the detection of Clear Airway events. Raising pressure may increase Clear Airways.
The only time you should see a rise in pressure is to treat Obstructives, Hypopneas, Flow Limitation and Snores.
What is your EPR setting? Try EPR 1 or off if CA’s persist.
Thanks. Will monitor for a bit.
Interesting that the machine can tell when it is a Clear airway vs the others.
RE: changed pressure question
When the CPAP senses the lack of respiration, ii uses pulses of air that are akin to sonar. If it gets a return then something is blocking the airway (OA), no return then it must be a clear airway (CA). That's the simple explanation.
RE: changed pressure question
And an even more confusing explanation....
A Clear Airway is when your brain forgets to tell you to breathe. The Airway is open, but you are not attempting to breathe. The pulses of air that the machine sends can detect this as a CA, and will not raise pressure.
An Obstructive is when your Airway is collapsing, but you are attempting to breathe. The pulses of air can detect this effort to breathe, flags it as Obstructive and raises pressure.
RE: changed pressure question
And just to keep it REALLY confusing: sometimes you are awake and not breathing while you e.g. turn over or rearrange your hose or your covers. When we're awake, our breathing is quite irregular compared to asleep breathing. You can notice this sometimes during the day, e.g., when you realize you haven't been breathing while you concentrate on something.