Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account

New Posts   Today's Posts

Strange Pressure reading
Strange Pressure reading
My Airsense 10 Autoset data showed this strange "Pressure" report this morning--a straight line decline over 2 1/2 hours from 5.00 to zero, starting when I turned the machine back on after a bathroom pause at 4am. (See attachment.)

The "Mask Pressure" graph doesn't show any change over the course of the night.

Any ideas what this means?

Post Reply Post Reply

Donate to Apnea Board  
RE: Strange Pressure reading
It's a data reporting error.
Post Reply Post Reply
RE: Strange Pressure reading
This is an artifact of the 'smoothing' algorithm used by OSCAR. To eliminate it, you can click on 'Square Wave Plots' in the Appearances tab of Preferences. It will be fixed in the next release of OSCAR.
Apnea Board Monitors are members who help oversee the smooth functioning of the Board. They are also members of the Advisory Committee which helps shape Apnea Board's rules & policies. Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
Post Reply Post Reply
RE: Strange Pressure reading
To me that looks like the last data time it got was at 4am then it knew the pressure was at 0 at at 6:40 when you woke up and it forgot to collect data in between those two times, and the program guestimates what the values are between two data points and so if it had a data point at 4am of 5 and then no data till 6:40am at 0 it would draw a straight line from 5 to 0 over that time. Kind of surprised it did a straight line as a pose to an exponentially declining line but still point is it looks like maybe there was an issue with the data being written like maybe it was in the middle of writing data when you turned it off causing that portion of the data to become corrupted when you turned it back on.

Nothing to really worry about unless it keeps happening multiple times, but yeah that just looks like it just had no data to fill in and so went "well it is at 5 at 4am and 0 at 6:40 with no points in between so lets estimate that line only having two data points to guess what the line looked like.
Post Reply Post Reply

Donate to Apnea Board  

Possibly Related Threads...
Thread Author Replies Views Last Post
  Set CPAP to fixed pressure but OSCAR shows pressure decreasing all night... cpapnewbie18 2 194 01-12-2023, 04:58 PM
Last Post: pholynyk
  OSCAR isn't reading data after updating to Mac OS: Ventura 13.0.1 JoyD. 28 759 12-10-2022, 10:00 AM
Last Post: JoyD.
  OSCAR error reading AirSense 10 Data mjholdeman 6 786 12-01-2022, 04:13 AM
Last Post: Mspeker
  Strange OSCAR 1.4.0 results jeffg 1 172 11-14-2022, 07:10 AM
Last Post: Gideon
  Trouble Reading Oscar Graph FijiFarmer 3 507 06-08-2022, 04:04 PM
Last Post: hh9797
  SD card reading errors cberistain 7 507 01-05-2022, 04:35 PM
Last Post: Dog Slobber
  Data handling for VERY low SpO2 reading on Viatom product. Ratchick 19 865 09-15-2021, 06:35 PM
Last Post: Crimson Nape

New Posts   Today's Posts

About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.