What's the Matter with my A-Pap Machine?

[Papillon2]

I just received a new PR System One APAP machine yesterday, to replace my basic PR machine. The machine was supposedly set to a range of 7-13, based on results of a previous diagnostic trial with the same type of APAP machine. This morning when I looked at the results on the machine, the 90% pressure reading was 16.5. Can this happen if the machine is properly set and working properly????

[jules]

who set it?

if it was the DME then don't count on them getting it right

if it was you, recheck it

[Papillon2]

Yes, the DME programmed it. The strange thing is that when I used the same machine for a 2-week diagnostic, my pressure never went over 12 in those two weeks. So, even if it's incorrectly programmed, it seems odd that my pressure would have been at 16.5 90% of the time. Hmmmmm, how can this be?

[jules]

90 % is not 90 % of the time - it is the 90 percentile - what you were at and below for 90 % of the night

if you take the pressure every minute and order them and put them in 10 equal sized groups, the cut off is for the top group is the 90 %ile mark

I would wonder how the DME set up the first machine

[blakepro]

My money would be on that they gave you a used machine and you are seeing the average result from your night AND the previous users nights.

What are the total hours used on the machine?

[Papillon2]

I don't know--how do I find that??