Thanks Mongo... and I do remember that old expression... lol.
I'm going to see how it goes tonight and go from there. I know myself and one or two nights is all it's going to take to know if what I changed will work for me. Chin strap - I'm going to try to avoid that. I tried and couldn't deal with it.
Keeping a log is a great idea. Thanks very much for coming to my rescue!
09-19-2015, 04:40 PM
(This post was last modified: 09-19-2015, 05:07 PM by vsheline.)
Near the top right of Apnea Board webpages is a "My Profile" link which makes it easy for us to edit our profile.
I suggest you edit your Profile under CPAP Pressure to say something along the lines of 6/11 PS=3. This would be enough info for others to understand your EPAPmin is 6, IPAPmax is 11, and IPAP is always 3 higher than EPAP, and that your machine is in VAuto therapy mode.
Whenever your machine raises EPAP this means the machine is seeing signs of obstruction or partial obstruction in your breathing: things like Flow Limitation, or snoring, or hypopnea, or obstructive apnea. When these signs of obstruction occur your "Auto" machine will raise the pressure; your machine may raise EPAP and IPAP together, but not higher than EPAP of 8 and IPAP of 11.
Flow Limitation means that during inhalation your airway is narrowing and is restricting your ability to inhale freely, which increases the amount of effort needed to breathe in and may lead to Respiratory Effort Related Arousal (RERA).
An apnea is scored by the machine when the amount of airflow into and out of our lungs reduces by 90% or more, for at least 10 seconds. If the reduction is between 90% and 50% for at least 10 seconds, the machine scores an hypopnea.
If the reduction is less than 50% but there are signs of increased Flow Limitation for at least 10 seconds, followed by tell-tale signs of an arousal (sudden large "recovery" breaths) this event was probably a RERA. The machine will not count this as an hypopnea (because reduction in airflow was too small), so the machine will not include this event when calculating the AHI.
Most Philips Respironics System One or newer models report RERA events.
Most ResMed models do not report RERA events, but APAP and other Auto models (like yours) do respond to signs of obstruction like Flow Limitation by raising the pressure, to open up the airway more.
Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.