User guide
ELI
O
S
ECH001XN111-A4 – 07/2022
50
Handheld mode measurement
4.2 ABR
4.2.3
Measurement consultation
When consulting an
ABR
, the following window appears and is a way of processing the curves. The initial purpose
of an
ABR
is to locate typical waves emitted by the hearing nerve, that is, waves I, II, III, IV and V. The presence or
absence of these waves and their time-related positioning will make it possible to detect the various pathologies.
For this purpose, the device offers many tools:
•
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 markers of waves I, III and V. 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).
•
At the bottom left, it is possible to select whether both ears are to be displayed at the same time or not.
•
Finally, the "+" and "-" buttons are used for scrolling through the various recorded power levels.
The "
->
" button at the top right gives access to another
toolbar.
The "
Latency
" option replaces the graphics by latency
tables calculated from the markers placed on the curves.
The displayed latencies are I-III, III-V and I-V.
for more details about patient management.
Power and ear
Scroll through
measures
Select ears to be
displayed
Additional options
I, III, V automatic positioning
Change graph time scale
Selection of the marker to
be placed
