User guide
ELI
O
S
ECH001XN111-A4 – 07/2022
54
Handheld mode measurement
4.3 ECochG
The time signal appears on the screen. The indicator
light at the top left indicates whether the signal has
reached the rejection threshold (
◼
= threshold reached,
◼
= signal below threshold). The rejection level is de-
termined in %. The higher this percentage is, the more
the rejection is permissive. The dark area in the middle
of graph indicates the zone where the device does not
trigger rejection. It can be adjusted manually with the
+/- controller or automatically by clicking on "
Auto
".
Click on the "
Save
" button to save the value and return to the
ECochG
parameter setting up menu.
Click on the "
Start
" button to start the measurement.
4.3.1.0
Measurement
The
ECochG
measurement window opens, click on
"
Start
". If both ears are selected, the test start on the left
ear. the patient hears the sound
The curve displayed is being constructed and its shape is updated in real-time depending on the number of clicks
already fed into the patient's ear.
The rejection indicator light notifies you when the rejection threshold is reached. If 40 successive rejections are de-
tected, the current point is rejected and the "
Rejection
" information appears on the screen. This phenomenon means that
the patient's muscular activity is too intense. When the patient is more relaxed, measurement will start again automatically.
If the phenomenon persists, it means that the rejection threshold has been calibrated too low. You can increase the rejec-
tion threshold thanks to the +/- controller at the bottom of the screen. You can also exit from the measurement by clicking
“
Stop”
then restarting another measurement by adjusting the rejection threshold to a higher value.
The "
Stop
" button stops the measurement. The curve is reconstructed. You then have the choice of saving the data by
clicking on "
Save
" or deleting it by exiting from the window using the back cross or restarting another measurement by
clicking on “
Restart
”.
The patient must be as relaxed as possible during this stage.
The rejection level must be set so that the
◼
indicator light is activated when the patient blinks his eyes or
swallows. At rest, it should not be activated more than one or 2 times per second.
Number of averaging
Realtime rejection setting
Rejection indicator
Graph area
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