Thank you for taking the time to help me understand how this machine works.
Your replies are very helpful.
02-06-2016, 04:09 PM
(This post was last modified: 02-06-2016, 04:20 PM by vsheline.)
APAP and standard Bilevel Auto machines watch for snoring and Flow Limitation and try to avoid obstructive apneas by raising the pressure before obstructive apneas and hypopneas occur. After an apnea or hypopnea has ended, the occurrence and perhaps duration of the hypopnea or obstructive apnea will also affect how much the pressure will be adjusted.
But I think it is not so much that standard 'PAP machines can never supply enough pressure to open a closed airway. Rather, only 'PAP machines having a "backup respiration rate" (an extremely expensive feature) will raise the pressure during an apnea.
Standard APAP and Bilevel APAP machines generally are designed to wait until the apnea has ended before making any adjustment to the pressure.
Bilevel machines with a backup rate (ASV or ST or ST-A or AVAPS, etc) will automatically start cycling between the exhale pressure and a higher inhale pressure to do for us some or all of the work of breathing, which can successfully treat central apneas, and will also help in preventing obstructive events.
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.
Any data, that close to your awakening is not reliable. Looks pretty bad, but it's just moments before you get out of bed.
A PRS1 machine responds like this.
It will respond to each FL. It will respond to each snore.
It will respond to one Hypop.
It wont raise pressure in response to a single OA. It will raise pressure in response to TWO OA in a certain time period tjough id have to look and see exactly how long that period is.
Looking at that graph your machine shouldnt have raised pressure in response to that one lone OA.