you're right about how encore shows it (light green), and yes, of course, any time that 'breathing is not detected', that would not count, either towards therapy hours, OR in the AHI. but when there's breathing detected, large leak or not, that does count in the AHI. Resmed, I believe, is the same...robysue wrote:On the PR machine I know this happens in Encore:palerider wrote:which "algorithm"?Sew tired and can't get logged in wrote:These other folks know way more than I but I wanted to mention that the algorithm does not consider the time that you are in Large leak as treated and that time period is not counted in your AHI. Now this has been consistent with my Resmed machine results. Haven't confirmed with PR machines.
the AHI calculation has nothing to do with large leak. it's events divided by hours.
If a Large Leak is flagged, but breathing is still detected, the time counts as "therapy/usage hours".
If there's an actual "patient disconnect" where the leak is so large that the breathing can no longer be detected, but the machine is on, that does not towards "therapy/usage" hours.
In an Encore printout, the "Breathing Not Detected" shows up as an ugly Black Bar over the Leak Rate graph. A Large Leak shows up as a light Green Bar as I recall in an Encore report. (I really don't want to have to go into Parallels and launch my current version of Encore Pro to confirm that light Green Bar thing right now.)
As I recall, PR uses the therapy/usage hours to compute the AHI. In other words, as long as breathing is detected, that counts as part of the denominator. If breathing is not detected, that time is NOT used when computing the AHI.
I never had an official Large Leak during the three or four months that I used a Resmed S9 way back when. So I have no idea what the Resmed machines do if there's an official Large Leak with breathing detected. If you or JediMark have any Resmed data lying around that has some extended Large Leaks, you might want to see how that data looks in ResScan vs. SleepyHead.
SleepyHead & SleepMapper Leak Stats Don't Agree
Re: SleepyHead & SleepMapper Leak Stats Don't Agree
Get OSCAR
Accounts to put on the foe list: dataq1, clownbell, gearchange, lynninnj, mper!?, DreamDiver, Geer1, almostadoctor, sleepgeek, ajack, stom, mogy, D.H., They often post misleading, timewasting stuff.
Accounts to put on the foe list: dataq1, clownbell, gearchange, lynninnj, mper!?, DreamDiver, Geer1, almostadoctor, sleepgeek, ajack, stom, mogy, D.H., They often post misleading, timewasting stuff.