Users Manual Part 1
41
Nerve Integrity Monitor
Default Nervassure alarm criteria
Default Color Conditions
Amplitude is greater than 50% AND Latency is less than 10% Green
Amplitude is less than 50% OR Latency is greater than 10% Yellow
Amplitude is less than 50% AND Latency is greater than 10% Red (Yellow for INMSG)
Amplitude is less than 100 Red (loss of signal [LOS])
(*) Indicates set value diers from default.
Default Nervassure trend settings
Procedure Name Thyroid Parotid Acoustic Neuroma
Slow Stim Rate 10/min 10/min 10/min
Fast Stim Rate 1/sec 1/sec 1/sec
Baseline Rate 2/sec 2/sec 2/sec
Show as Mountain Graph No Yes Yes
Alert Type Amplitude OR Latency Amplitude OR Latency Amplitude OR Latency
Nervassure Stim Current 1.0 mA 0.6 mA 1.0 mA
Amplitude Threshold 50% 50% 50%
Latency Threshold 10% 10% 10%
Single Channel Mode Yes Option not available Option not available
Alarm on Best Channel Yes Option not available Option not available
Note: When running single channel mode in a Thyroid procedure, the trend graph (right side of the screen) will present the trend
with the best plotted amplitude. The waveform graph (left side of the screen) will present the waveform with the best Nervassure
amplitude when Stim 1 is not in use. When Stim 1 is used to procedure EMG, the waveform graph will present the waveform with
the best EMG amplitude.
On the Nervassure EMG panel, the Show Nervassure Waveforms selection is activated by default. The system shows the waveforms
from Nervassure electrode stimulation on the Monitoring Screen as blue with EMG response in white.
You can adjust the following Nervassure settings using the Nervassure panel. The Nervassure settings only appear on the Settings
panel when you select a Nervassure procedure.
Nervassure EMG Settings panel
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1 Settings button. Opens the Settings panel.
2 Nervassure settings.
3 Nervassure EMG Audio adjustment.
4 Voice - Nervassure Values.
5 Nervassure Stim 2 rates.
• Slow rate.
• Fast rate.
• Baseline rate.
6 Trending Display:
• Show Nervassure Waveforms.
• Trend Latency:
— Show entire session.
• Show as Mountain Graph.
7 Color Conditions panel.
FCC use only, not for Medical use