Re: Aloha mask issues
Posted: Tue May 29, 2012 1:41 pm
Do we trust a really low AHI when our leaks are borderline higher than we want?
We aren't ever really told just what happens other than machine's reporting ability can be impaired.
I have used both Respironics and ResMed machines and I have experience large leaks for a duration long enough that I can see the impact on therapy and with both machines I had an increase in events show up...not zero events.
ResMed called some of the events unknowns..but it flagged them.
In the report below (where I had a really bad leaky night) at near 80 L/min (ResMed machine used) I got some unknowns and at 40 L/min pretty much nothing. I actually believe that I still had decent pressure therapy at that time or I feel I would have had more events get flagged since it flagged events at 80 L/min. This is my one and only time with this massive of a leak for any duration so I have nothing else to validate things.
So my thoughts are that while obviously 40 L/min is more than I want to see all the time...I don't think that things totally went to hell when I had that leak...now the near 80 leak..yeah..things went to hell but even then it wasn't like I spent the whole night there. I tend to think that the machine actually does a fairly decent job of scoring events up past that 40 L/min mark. Might not be perfect but if I was seeing less than 1 AHI and spent a bit of time higher than I wanted leak...I would tend to think that things were better than I though.
Again..I have no proof and this is why we say to keep the leaks at a minimum if we can just in case....
viewtopic.php?f=1&t=76445&p=698087&hili ... ne#p698087
We aren't ever really told just what happens other than machine's reporting ability can be impaired.
I have used both Respironics and ResMed machines and I have experience large leaks for a duration long enough that I can see the impact on therapy and with both machines I had an increase in events show up...not zero events.
ResMed called some of the events unknowns..but it flagged them.
In the report below (where I had a really bad leaky night) at near 80 L/min (ResMed machine used) I got some unknowns and at 40 L/min pretty much nothing. I actually believe that I still had decent pressure therapy at that time or I feel I would have had more events get flagged since it flagged events at 80 L/min. This is my one and only time with this massive of a leak for any duration so I have nothing else to validate things.
So my thoughts are that while obviously 40 L/min is more than I want to see all the time...I don't think that things totally went to hell when I had that leak...now the near 80 leak..yeah..things went to hell but even then it wasn't like I spent the whole night there. I tend to think that the machine actually does a fairly decent job of scoring events up past that 40 L/min mark. Might not be perfect but if I was seeing less than 1 AHI and spent a bit of time higher than I wanted leak...I would tend to think that things were better than I though.
Again..I have no proof and this is why we say to keep the leaks at a minimum if we can just in case....
viewtopic.php?f=1&t=76445&p=698087&hili ... ne#p698087