Patient Monitor User Manual Monitoring BIS
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blank side of the sensor tab (i.e. the side without the computer chip) should be facing up.
CAUTION
1 Ensure that the BISx device does not come into prolonged contact with your patient’s
skin, as it may generate heat and cause discomfort.
2 The BISx device may remain connected to a patient during defibrillation as long as
the sensor is not located between the defibrillator pads.
NOTE:
After you switch the operating mode of the monitor into monitoring mode from demo
mode, you need to re-plug the V-BIS module into the monitor before starting BIS
measurement.
18.4 BIS Continuous Impedance Check
The continuous impedance check is always active to enable you to understand the sensor
condition in real time. It checks:
The combined impedance of the signal electrodes and the reference electrode
This is done continuously and does not affect the EEG wave. As long as the impedances are
within the valid range, no prompt message of this check or its results will be announced
The impedance of the ground electrode
This is done every ten minutes and takes approximately four seconds. It causes an artifact in the
EEG wave, and the monitor will announce
BIS Ground Check on the screen during the check. If
the ground electrode does not pass the check, another check will be performed. This continues
until the ground electrode passes the check.
18.5 BIS Sensor Check
This measures the exact impedance of each individual electrode. It causes a disturbed EEG wave.
18.5.1 Starting a Sensor Check
The sensor check is automatically started when a sensor is connected. To manually start a sensor
check:
press the hard key on the V-BIS module, or
select BIS Setup > Sensor States and click Start Sensor Check.
18.5.2 Stopping a Sensor Check
The sensor check stops automatically if the impedances of all electrodes are within the valid
range. To manually stop a sensor check:
press the hard key on the V-BIS module, or
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