Philips Efficia CM Series - Measurement Ranges

and BIS R/SQI R/SEF R/EMG* R/SR R/TP R/BC R and BIS L/SQI L/SEF L/EMG* L/SR L/

TP L/BC L parameters are also available.

Figure 5-3 Efficia Waveform and Numeric panes

*EMG values are displayed in a bar graph format. The numeric value is not displayed on the main

screen.

Above and below the waveform, lines are drawn to mark the maximum and minimum

levels. These scale lines are not at the absolute edge of the waveform region, but at

about the +/- 75% levels from the center. The actual scale is displayed with each line.

Waveforms for EEG and EEG2 are drawn in yellow, and waveforms for EEG3 and EEG4

are drawn in magenta. Messages related to Impedance Check, Ground Check, Simulator

and Device/Sensor Disconnection are shown in the waveform pane.

Measurement Ranges

The following table lists the BIS measurement ranges:

When using the bilateral sensor, each parameter will have a R and L value for the right

and left side of the brain, with the above ranges.

SQI is also represented by a graphic icon. The SQI level indicator has 5 segments, each representing 20%.

No segments: SQI = 0%

1 segment: SQI between 1% and 14%

2 segments: SQI between 15% and 35%

3 segments: SQI between 36% and 56%

4 segments: SQI between 57% and 77%

5 segments: SQI between 78% and 100%

The EMG bar graph is made of 4 segments, and the segments are filled according to the EMG value :

No segments: EMG below 30 dB

1 segment: EMG between 30 and 38 dB

2 segments: EMG between 39 and 47 dB

3 segments: EMG between 48 and 55 dB

4 segments: EMG above 55 dB

Waveform pane Numeric pane

Measurement Range

Bispectral Index (BIS) 0 to 100

Electromyography (EMG) 25 to 100 dB

Signal Quality Index (SQI) 0 to 100%

Suppression ratio (SR) 0 to 100%

Spectral Edge Frequency (SEF) 0.5 to 30.0 Hz

Total Power (TP) 40 to 100 dB

Burst Count (BC), Extended sensor only 0 to 30

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