Instructions for use Zeus Infinity Empowered SW 2.n 245
Monitoring
Settings on Zeus IE
z In the Sensors/Parameters > BIS/NMT dialog
window, touch the BIS tab (A).
The BIS page displays:
B EEG waveform display
C EEG scale: Selection of the scale for the EEG
waveform in µV
D Smoothing rate [s]: Selection of the smoothing
rate used to calculate the BIS value average
– 15 s (basic setting): Increased responsive-
ness to changes (e.g., induction or waking).
– 30 s: A smoother trend (with reduced varia-
bility and sensitivity to artefact)
E Filter:
– On: Filter out interference from the raw EEG
signal
– Off: Display of the raw EEG without filter
F remaining applications for SRS sensor
G The button opens the Alarms > Alarm lim-
its > Noninvasive dialog window for alarm limit
setting.
Displaying all BISx parameters
z Touch the All EEG values button (H).
The following is displayed:
I BIS: Bispectral index (0 to 100)
Continuously processed EEG parameters
which correspond to the state of consciousness
of the patient: 100 = conscious, 0 = base line
J SQI: Signal quality index (0 to 100 %)
Measurement of signal quality for the EEG
channel source which is calculated based on
impedance data, artefact and other variables.
K EMG: Electromyographic display (0 to 100 dB)
The output (in dB) in the frequency range 70 to
110 Hz is marked with EMG. This frequency
range contains the percentage of muscular ac-
tivity and of other high-frequency artefacts on
the total output.
L BSR: Burst suppression ratio (0 to 100 %)
Indication of an inactive EEG. The suppression
rate is the timer percentage of the last 63-sec-
ond period in which the signal is recognized as
"in the suppressed state".
Example: BSR = 11 (isoelectric over 11 % of the
last 63-second period or 7 seconds)
M SEF: Spectral edge frequency (0.5 to 30.00 Hz)
Frequency at which 95 % of the total energy lies
below and 5 % of the total energy lies above
N PWR: Total output (40 to 100 dB)
Measurement of the absolute total output in the
frequency range of 0.5 to 30 Hz
O BCT: Burst count (0 to 30)
Alternative to BSR to quantify the suppression
in the EEG. It shows the number of EEG bursts
in the last minute. T
he burst count is only acti-
vated if an extension sensor is connected. The
BCT value is empty for all other sensor types.
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Sensors/Parameters
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B
C
D
E
G
H
F
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All EEG values
I
J
K
L
M
N
O
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