Instructions for use Zeus Infinity Empowered SW 2.n 241
Monitoring
Settings on Zeus IE
z In the Sensors/Parameters > BIS/NMT dialog
window, touch the NMT tab (A).
The NMT page displays:
B Stimulation: NMT start button
CMode of the measurement: Single, TOF, PTC
DInterval: Time intervals for applying a pulse
In PTC mode, no time interval can be selected.
In TOF mode, the interval of 1s cannot be se-
lected (grayed out).
E Pulse width [µs]: Duration of the applied pulse
in µs
F Current [mA]: When the Auto current mode
is selected, the button remains disabled (gray).
G Current mode: Selection for setting stimulation
current:
Auto: A suitable stimulation current between
5 and 60 mA is determined in conjunction with
each new referencing procedure, ensuring reli-
able measurement and minimizing the load on
the patient.
Man: Pulse value which can be set with the ro-
tary knob, 5 to 60 mA in 5 mA increments
If the value is changed in current mode Man, a
new reference value is determined!
H Delete reference: Clear button to delete the
saved reference pulse and the supramaximal
current determined.
I The button opens the Alarms > Alarm lim-
its > Noninvasive dialog window for alarm limit
setting.
Starting the NMT measurement
z In the Sensors/Parameters > BIS/NMT > NMT
dialog window, touch the NMT start (J) bu
tton.
Or if the NMT start button is configured
(see page 332):
z In the main menu bar, touch the NMT start but-
ton.
At the start of measurement, the NMT pod emits
stimulation pulses in order to determine the upper
stimulation current intensity (supramaximal cur-
rent). Then 4 pulses are applied for reference
measurement.
In the ensuing single mode measurements, the
NMT pod compares the measurements with the ref-
erence measurement.
The supramaximal current and the reference are
determined again after the start of a measurement:
– if a Trident pod or sensors have previously been
connected or
– if the pulse width is changed.
z Current mode Use Auto.
z Determine supramaximal current and reference
pulse on the non-relaxed patient!
400
Sensors/Parameters
A
B
C
D
E
F
G
H
I
WARNING
NMT nerve stimulation can be painful for a pa-
tient not under sedation. Only administer the
stimuli after sufficient sedation.
421
Sensors/Parameters
J
K
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