Operator's Manual

Table Of Contents
Glossary
224
BIS™ Advance Monitor
would cause severe or intolerable pain to an un-
anesthetized patient.
Asymmetry The percentage of total EEG power that resides in the
left hemisphere of the brain. Available only with BISx4
and Bilateral Sensor. Calculated by BISx4 as: (Total
Power Left / (Total Power Left + Total Power Right)) *
1000. The same calculation is performed for the right
side of the brain, with (Total Power Right / (Total
Power Right + Total Power Left)) * 1000.
Bilateral Sensor The brand name for the 4-channel sensor used with
the BIS Monitoring system, used to monitor both
sides of the brain hemisphere ("bilateral" = 2 sides).
BISx module The small module that attaches to the BIS™ Advance
monitor via its own monitor cable and to a BIS
sensor via the Patient Interface Cable (PIC). It acquires
and processes EEG information and sends it to the
monitor for display.
BISx4 A module similar to BISx module that is used during
4-channel monitoring with BIS Bilateral Sensor. It can
be used in place of a BISx module with other sensors
as long as it is used with the PIC-4.
BIS™ Bilateral Sensor A single patient use, disposable, pre-gelled 6-
electrode array that is applied directly to the patient’s
forehead and temple to record and display four
channels of EEG, two from each side of the brain. The
BIS sensor tab contains an electric smart card
memory device that stores configuration and
Identification information.