Interpretation Guide
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Sural Nerve Conduction Interpretation Guide This guide is for informational purposes only. It does not provide a clinical diagnosis. 1-5 Nerve Conduction Reference Nerve Conduction ReferenceRanges Ranges*
32
16
Normal Nerve Conduction
Amplitude (µV)
Mild Neuropathy 8
4
Moderate Neuropathy
2
1 Severe
0 20
30
40
50
60
Conduction Velocity (m/s)
Severity
Amplitude
CV
Normal
Normal
Mild
Normal
Abnormal
Moderate
Abnormal
Normal or Abnormal
Severe
Undetectable
----
Normal
*Data on file
70
Error Code Key† Display
Light
Description
Lb
Incorrect limb selected
Pn
Data quality issue requiring retest
Stimulation issue. Possible causes: Pr • Insufficient gel on probes
Sn
Incorrect biosensor insertion or defective biosensor
Sn
Data quality issue. Possible causes:
Ec
Data quality issue. Possible causes:
• Biosensor backing not removed • Incomplete biosensor contact • Skin inadequately prepared
• Excessive muscle contraction or patient movement • Biosensor backing not removed
oC
Patient ankle too cold
Lo
Low battery
Hd
Device hardware issue
Ub
Excessive biosensor reuse detected, device is disabled
†
• Poor probe contact with skin • Inadequate skin preparation • Probe movement during test • Gel smearing between probes
Please refer to the Reference Guide for a detailed list of causes and solutions.
©2012 NeuroMetrix, Inc. All Rights Reserved. PN2203523 Rev. D