Mindray BeneView T8, Operation Manual

Page: 161 / 290

Monitoring BIS
16-7
16.7 BIS Sensor Check Window
To open the sensor check window, select [
Sensor Check >>
] in the [
BIS Setup
] menu. The
graphic in the BIS sensor check window automatically adapts to show the type of sensor you
are using, show three or four electrodes as required. Each symbol in the graphic represents an
electrode and illustrates the most recently-measured impedance status of the electrodes:
①
is
the reference electrode; the ground
②
electrode; and are signal electrodes.
③ ④
1. Measure electrode impedance 2. Start/stop continuous impedance checks
3. Time of the most recent impedance check 4. Show sensor information
The measured electrode-to-skin impedance and electrode status are displayed above each
electrode:
Status Description Action
[
Lead Off
] Electrode falls off and has no skin
contact Reconnect electrode, or check the
sensor-to-skin contact. If necessary, clean
and dry skin.
[
Noise
] The EEG signal is too noisy.
Impedance cannot be measured
[
High
] The impedance is above the limit
Check the sensor-to-skin contact. If
necessary, clean and dry skin.
[
Pass]
The impedance is within valid range No action necessary.
Although BIS may still be measured when the electrode status is [
Noise
] or [
High
], for best
performance, all electrodes should be in [
Pass
] status.
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