Operator's Manual

Table Of Contents
The BIS™ Advance Parameters
BIS™ Advance Monitor
factors such as general anesthesia, coma, or
hypothermia.
Burst count is activated by connection of an
Extend Sensor or Bilateral Sensor. Thus, the burst
count parameter will appear on the screen only
when an Extend and Bilateral sensor is used.
SR (Suppression Ratio) The percentage of time during the last 63 seconds
in a state of isoelectric EEG.
For example, SR=10% represents 6.3 seconds of
the last 63 seconds.
When set, the SR limit appears as a purple dashed
line on the SR trend.
ST (Suppression Time) The accumulated time in this case that the patient
was in a state of suppressed (isoelectric) EEG. It is
provided in hours, minutes and seconds as
HH:MM:SS.
DSA (Density Spectral Array)
A graphic display of the EEG power at each
frequency over time.
The amplitudes of the power spectrum are
represented by varying colors. Red indicates high
power, and blue indicates low power.
MF (Median Frequency)
The frequency below which 50% of the total EEG
power lies. It is displayed as a purple line on the
DSA graph.
The MF Number shall be displayed on the main
monitoring screen in 2-channel mode; for the 4-
channel mode, the Left MF Number or Right MF
Number shall be displayed, according to the user's
selection of the brain hemisphere side.
SEF (Spectral Edge
Frequency)
The frequency below which 95% of the total EEG
power lies.
It is displayed as a white line on the DSA graph.