Understanding Compliance Report ENCORE Respironics

Hello I am new here, although I have been using a CPAP machine for a long time. I have a print out for my compliance report and I can not get an answer from anyone on what all this means. So here is the question, on the graph from the ENCORE Respironics I have four pieces of information, the MAX AUTO CPAP 15 cm H2O, the MIN AUTO CPAP 9 cm H2O, which I understand both, the AUTO CPAP and the 90% AUTO CPAP I need more information about. Some nights the 90% AUTO CPAP is at MAX pressure 15 cm H2O and on this same night the AUTO CPAP is at 11 cm H2O. Some nights the 90 % AUTO CPAP is at 12 cm H2O and the AUTO CPAP is at 10 cm H2O. Why is the 90% AUTO CPAP at the maxiumum pressure, this cannot be good, I believe my pressure should be increased.

You have the machine set on AUTO as 9cm to 15cm, it is going to range in that range depending on the pressure it thinks you need, to control your apnea. 90% is the pressure it figured you needed 90% of the night. I don't pay any attention to that or compliance. I work within the Dailies, to figure what happened and when it happened and why. The machine will work better with a max of 4cm between low and high, too wide a spread and the machine can't catch up with events. Some people have trouble sleeping when the machine changes pressure and do better on CPAP.

I used to use 12cm to 15cm, now I set both at 15 cm on APAP, why I get one more data item over CPAP and I don't mind the pressure. With a AHI of 0.8 AVG it works well for me. Jim

Goofproof wrote:You have the machine set on AUTO as 9cm to 15cm, it is going to range in that range depending on the pressure it thinks you need, to control your apnea. 90% is the pressure it figured you needed 90% of the night. I don't pay any attention to that or compliance. I work within the Dailies, to figure what happened and when it happened and why. The machine will work better with a max of 4cm between low and high, too wide a spread and the machine can't catch up with events. Some people have trouble sleeping when the machine changes pressure and do better on CPAP.

I used to use 12cm to 15cm, now I set both at 15 cm on APAP, why I get one more data item over CPAP and I don't mind the pressure. With a AHI of 0.8 AVG it works well for me. Jim

Jim
Good information.

RG's answer to 90% pressure is more correct than mine was, as I said I don't worry about %, I use the graphs in the Dailies, by drawing a mental line vertically thru all three graph you can see cause and effect for what happened and when in your treatment, and see where corrections need to be made. (Don't draw on the screen) There are free ruler programs that will do that too. Jim

Goofproof wrote:RG's answer to 90% pressure is more correct than mine was, as I said I don't worry about %, I use the graphs in the Dailies, by drawing a mental line vertically thru all three graph you can see cause and effect for what happened and when in your treatment, and see where corrections need to be made. (Don't draw on the screen) There are free ruler programs that will do that too. Jim

As Jim does, I pay attention mainly to the graphs in the daily details pages, and I don't really give the 90% pressure a passing glance.

I had to draw a mental line vertically through cpaptalk to find the answer Jim was talking about...

It was in a different topic started by lessismore:

"Why is 90 auto cpap at max pressure"
viewtopic/t46744/why-is-90-auto-cpap-at ... ssure.html

rested gal wrote:The "90%" pressure means that you spent 90 percent of the time AT that pressure AND at pressures BELOW that pressure.

It also means that you spent 5 percent of the time at pressures above that pressure.

The 90% pressure doesn't mean that you spent 90 percent of the time up AT that one pressure.

You might have spent most of the time at pressures way below the "90%" pressure, and a very short time actually using the 90% pressure.

What range is your autopap set for?