Specifications
Efficia CM Series Rack and Modules Instructions for Use 9-19
BIS Specifications
BIS Specifications
The BIS measurement module is designed to monitor the hypnotic state of the brain
based on acquisition and processing of EEG signals. The BIS module processes raw EEG
signals to produce a single number, called the Bispectral Index™, or BIS, which correlates
with the patient's level of hypnosis.
The Efficia CM Series patient monitor when in use with the BIS module, will display:
• The current BIS number
• Trend graphs of processed EEG parameters
• Raw EEG waveforms in real time
• Various signal quality indicators (EMG, SQI)
• Suppression Ratio (if requested by the user)
• Burst Count number (when a BIS Extended Use Sensor is in use)
• Alarm Indicator and Messages
The module performs self-tests to ensure that it is functioning properly and that
impedance levels of patient sensors are within acceptable limits.
When using a bilateral sensor, each parameter will have an R and L value for Right and
Left side of the brain, with above ranges and resolution.
.
Parameter
Measurement
Ranges
Resolution
Bispectral Index (BIS) 0 to 100 1%
Electromyography (EMG) 30 to 80 dB 1 dB
Signal Quality Index (SQI) 0 to 100% 1%
Suppression ratio (SR) 0 to 100% 1%
Spectral Edge Frequency (SEF) 0.5 to 30.0 Hz 0.1 Hz
Total Power (TP) 40 to 100 dB 1 dB
Burst count (BC) 0 to 30 1
Parameter Specification
EEG Trace Scale • ± 50 V
• ± 75 V
• ± 100 V
• ± 200 V
• ± 500 V
• ± 750 V
• ± 1000 V
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