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Nerve Conduction Velocity Graphs

Guillain-Barre Syndrome: Acute Stage

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Nerve Conduction Velocity in Guillain-Barre Syndrome

During my two-month hospitalization with Guillain Barre Syndrome, my neurologist performed two Nerve Conduction Velocity (NCV) studies spaced three weeks apart. These NCV studies were performed, respectively, at 10 days and four weeks from onset of the first symptoms of paresthesia (numbness and tingling) and motor weakness.

Guillain-Barre is a symmetric polyneuropathy, thus Nerve Conduction measurements are taken on just one side of the body, the dominant side – in my case the right side.

Second NCV Test / Diagnostic Report

Comment

The motor nerve conduction study (right median, right ulnar, right posterior tibial, right peroneal) showed further slowing of conduction particularly in the lower extremity as well as in the median nerve.

The distal latencies were markedly prolonged at this time, much more so than at the previous examination.

The median and ulnar sensory responses were unobtainable (conduction block). The F Wave latencies were unobtainable (conduction block).

Impression

The findings are indicative of an acute polyneuropathy.

Service Date: October 18

The second NCV test is published on this page (graphs, tables, plus diagnostic report). To view the first NCV test, go to:  Polyneuropathy Onset

Click an image to view the highest-resolution format available.

Nerve Conduction Velocity Test 2 / Report

Findings: Acute Polyneuropathy
Acute Polyneuropathy / Nerve Conduction Velocity / Diagnostic Report

Nerve Conduction Velocity / Criteria

Neurophysiology Lab Reference Ranges
Royal University Hospital Saskatoon / Neurophysiology Laboratory / NCV Reference Ranges

Nerve Conduction Velocity Test 2 / Table

Motor Nerves (Median, Ulnar), Sensory Nerves, F Waves
Acute Polyneuropathy / Nerve Conduction Velocity / Table / Motor (Median, Ulnar), Sensory, F Waves

Nerve Conduction Velocity Test 2 / Graph

Motor Nerves: Median and Ulnar CMAP
Acute Polyneuropathy / Nerve Conduction Velocity / Graph / Motor Nerves: Median, Ulnar CMAP

Nerve Conduction Velocity Test 2 / Table

Motor Nerves: Peroneal and Posterior Tibial CMAP
Acute Polyneuropathy / Nerve Conduction Velocity / Table / Motor Nerves: Peroneal, Tibial CMAP

Nerve Conduction Velocity Test 2 / Graph

Motor Nerves: Peroneal and Posterior Tibial CMAP
Acute Polyneuropathy / Nerve Conduction Velocity / Graph / Motor Nerves: Peroneal, Tibial CMAP
Georgena S. Sil
Saskatoon, Canada
Physicist & Technical Writer
Alumnus: University of British Columbia
TuumEstContact@protonmail.com
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