User guide
BABYS
C
REEN
ECH001XN121-A4 – 07/2022
26
Chapter 3. ABR measurement
3.5 Measurement consultation
In a normal use, the measure will automatically stop:
If the maximum measurement time has been reached
and wave V is not detected, then the device cannot val-
idate the measurement.
If the correlation between the two curves is good and
the two markers for the wave V are placed at the same
place, then the test validated.
In both case it is possible to directly save the measurement or to consult it before choosing to save it or not.
3.5
Measurement consultation
When consulting a screening ABR, the above window is displayed and allows to process the curves. The first aim of
a screening ABR is to locate the wave V at a relatively low power. This wave presence will allow to give a negative or
positive diagnosis about the patient hearing.
The wave plotting and the measure validation is automatically done during the acquisition but the device also provides
some consultation tools to fine tune the result:
•
At the top of the screen, there are buttons relative to each marker. Click on one of the buttons to move the corre-
sponding marker over the curves. To guide positioning, "normality" zones are grayed out and the marker is posi-
tioned by simply clicking on the curve.
•
The “
Auto
” button automatically places the V marker. If the wave is not significant enough or if it leaves too much
the areas of "normality" it will not be placed.
•
At the bottom right there is a button for adjusting the timescale of the curves making it possible to display 5 ms, 10
ms or 20 ms (corresponding to the time elapsing after the stimulation click).
Refer to paragraph
for more details about patient management.
Measure validation
Measure informations
Additional options
Wave V automatic position-
ing
Change graph time scale
