Disappointed

[justMongo]

The pressure data indicates that you are indeed running in VPAP S (fixed bilevel) mode with a very short ramp period...

I agree the pressure graph looks like S mode. But, the mode listed to the left of her SH graphs says APAP.

Could it be that the machine is in Auto mode -- but the IPAPmax and EPAPmin and PS are set in such a way as to constrain the machine's pressure such that it's acting like an S mode VPAP?

[robysue]

The pressure data indicates that you are indeed running in VPAP S (fixed bilevel) mode with a very short ramp period...

I agree the pressure graph looks like S mode. But, the mode listed to the left of her SH graphs says APAP.

I'm pretty sure this is a (known) SH bug. Others have reported inconsistencies between what SleepyHead reports as the mode and what the mode is set to for VPAP and BiPAP machines

Also, the VPAP Auto does not have an APAP mode as I recall. But it is true that if you use VPAP Auto mode with PS = 0, 1, 2, or 3, that will minic the S9 AutoSet's APAP mode with EPR set to 0, 1, 2, or 3.

And it's quite clear from the pressure graphs that Clementine's PS = 6, which also indicates that APAP is NOT the correct mode.

Could it be that the machine is in Auto mode -- but the IPAPmax and EPAPmin and PS are set in such a way as to constrain the machine's pressure such that it's acting like an S mode VPAP?

Yes, if the VPAP Auto was set to VPAP Auto mode with

• min EPAP = 5,
  max IPAP = 11,
  PS = 6,
  

then the machine would act just like it does in VPAP S. But then the numerical data that Clementine posted further up stream would have had PS data along with IPAP and EPAP data.

[justMongo]

RobySue - I agree that a better therapy choice would be to set to Auto and give the machine several cm-H2O on the IPAP to work with.
Clementine's OAs are clustered, as you note.

I use the same machine in Auto; and it does a wonderful job of suppressing flow limitation and impending OA.

[Clementine]

Okay, so you've lost me a bit there .... should I go with the advice to ask for the Vpap auto?

[robysue]

Okay, so you've lost me a bit there .... should I go with the advice to ask for the Vpap auto?

Yes. You really ought to ask the sleep doc to authorize at least week long trial on VPAP Auto.