OSCAR question about how Ramp is reported

[SleepyCPAP]

I have obtained a used ResMed Airsense 10 Autoset so that I don't have to use my recalled PRS1 machine.  I am trying different settings, and turned on AutoRamp.  But when I look at OSCAR it has odd machine setting reports about ramp, such as "2" and "45 minutes".  It doesn't say AutoRamp or how long the ramp was lasting (on this night about 18 minutes showing on ramp pressure 9.8cm):


   

This makes it hard to switch from day to day and just know the ramp duration or type (autoramp, vs set ramp time).  Can this be updated?

-SleepyCPAP

[staceyburke]

Using the ramp is not a good idea. Yours is set for 45 minutes. That is 45 minutes where you are not getting therapy or reports of events during that 45 min.

If you stop the machine to use the bathroom or adjust your mask the ramp starts again with 2 breaks (turning off the machine” that makes about 1/4 of your sleep time without therapy.

[Sleeprider]

A complete detailed screenshot would be helpful in seeing the actual extent of ramp and the version of Oscar you are using.

[SleepyCPAP]

Hi Sleeprider,
Thanks for looking into this and asking for more info.  I am using OSCAR 1.2.0 on my Mac laptop.  Here is a whole-night screenshot, and a closeup showing it coming out of ramp.  I measure the AutoRamp time to be about 18.5 minutes. That is when the machine guessed I was no longer awake and started raising pressure.

   
   

Dear staceyburke,
Thanks for your concern.  I have the ramp on Auto so that it will not respond to any breathing irregularities while I'm still awake.  When it guesses I am asleep (30 breaths of even sleep waveforms) it will start responding and also raise to minimum 10cm or higher if needed.  I have been on CPAP 10cm for a long time and can get <1 AHI with that plain pressure, so I'm not worried if the ResMed device is wrong about me being awake - I'd have "ok" results if stuck at 9.8 all night.  I often end up with events (such as a CA, maybe OA/H - it depends) right before I transition to sleep.  That kind of scoring junk need not be in my total night's score, so I'm glad if it doesn't put it in while in ramp time.   I do not have a ramp setting of 45 minutes, that is the OSCAR question I ask in this thread.  Why does it say that??? It confuses me to be reported that way, and it confused you.  I was in ramp for about 18.5 minutes because that was awake time.  ResMed's printed materials say AutoRamp will not last more than 30 minutes, even if it doesn't think I'm asleep.

[pholynyk]

The Ramp setting reporting has been updated so that you will see 'Automatic' instead of 2, but some more work needs to be done so that the erroneous time will not be shown.

This will show up in the next release of OSCAR.

[Sleeprider]

SleepyCPAP, you have a very unbalanced inspiration expiration time that usually suggest flow limitation beyond what your statistics suggest. You might want to start a therapy thread where we can look more closely at the flow rate wave-form and see if you might benefit from a higher EPR. Basically we see a long inspiration time with a rapid high volume expiration.

[SleepyCPAP]

Thank you Sleeprider, I have taken you up on the suggestion to post a therapy thread in the general forum:
http://www.apneaboard.com/forums/Thread-...#pid407947