User's Manual

Ultraview Care Network
23-8
Impedance Values
If the impedance value is too high, it could indicate that the BIS sensor is no
longer making good contact and needs to be examined. Usually artifacts will
signal this fact.
After touching the TEST ELECT key, additional feedback is given to the user by
flashing the impedance value when the value exceeds the threshold. (Refer to
Impedance Montage on page 23-11 and TEST ELECT Key on page 23-15.)
The Pass/Fail thresholds for the terminals are:
• Ground < 100 Kohms
• Center < 7.5 Kohms
• Left/Right < 7.5 Kohms
Normal Bedside Display Format
Monitor Software
The full bedside view requires three waveform zones. The example in Figure 23-5
displays the BIS plot and EMGL trends.
Figure 23-5: BIS bedside display (3 zones)
Analog Waveform
A single waveform is displayed in a box that is 300 pixels wide by 60 pixels high.
With this display, roughly 8-seconds of waveform data can be displayed at a
sweep speed of 15 mm/sec, 4-seconds at 30 mm/sec, and 2.4-seconds at
50 mm/sec.
!
• In normal use, the typical impedance value for the ground is
less than or equal to 6 Kohms, while the values for the center
and left/right terminals are between 0.5 and 1.5 Kohms.
• The user cannot control the impedance thresholds.