Leak Rate Waveform

[BrassCat]

Hello the forum. Thanks for all the support.

I am confused concerning my leak rate waveform. See included screen shot.
I would understand the lower line indicates the current leak rate. Makes sense.
The upper line I am understanding would indicate the ACCUMULATED leak
volume. But it starts out high. I would expect it to start at zero and slowly rise!
Obviously I am misunderstanding what this line represents.

Best help, Stan

[edfreeman]

Total leaks includes the air flow through the mask vents. You can turn it off under "Preferences" under "File" at the top. Click on the "Waveforms" tab.

[sawinglogz]

Note that, for PRS1, the CPAP and BiPAP models only report the total leak, and OSCAR is estimating the unintentional leak from that. I have no idea how accurate that estimate is.

The ASV and S/T and AVAPS ventilators all report the unintentional leak as well as the total leak.

[Gideon]

Note that, for PRS1, the CPAP and BiPAP models only report the total leak, and OSCAR is estimating the unintentional leak from that. I have no idea how accurate that estimate is.

The ASV and S/T and AVAPS ventilators all report the unintentional leak as well as the total leak.

we will need to flag that as an OSCAR calc vs a vendor calc before 1.2.0

[sawinglogz]

Agreed. That's one of many of attributes of channels that we'll want to add. (Another being whether the channel is an average interval that should be drawn as a square wave plot vs. continuous data that should be a linear graph. This varies by manufacturer.)