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Nerve Conduction Velocity Graphs

Guillain-Barre Syndrome: First Onset

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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.

First NCV Test / Diagnostic Report

Comment

The motor nerve conduction study (right peroneal, right posterior tibial, right median, right ulnar) showed prolongation of the distal latencies of all the nerves examined. The conduction studies were actually not particularly slowed.

The right median and peroneal F Wave latencies were unobtainable (complete conduction block).

The median and ulnar sensory distal latencies were within the limits of normal. However, the amplitude of the response was very low.

Impression

The findings would be consistent with a polyneuropathy.

Service Date: September 29

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

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

Nerve Conduction Velocity Test 1 / Report

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

Nerve Conduction Velocity Test 1 / Graph

Sensory Nerves: Median and Ulnar Distal Latency
Polyneuropathy Onset / Nerve Conduction Velocity / Graph / Sensory Nerves: Median, Ulnar Distal Latency

Nerve Conduction Velocity Test 1 / Table

Motor Nerves: Median and Ulnar CMAP & F Waves
Polyneuropathy Onset / Nerve Conduction Velocity / Table / Motor Nerves: Median, Ulnar CMAP plus F Waves

Nerve Conduction Velocity Test 1 / Graph

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

Nerve Conduction Velocity Test 1 / Table

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

Nerve Conduction Velocity Test 1 / Graph

Motor Nerves: Peroneal and Posterior Tibial CMAP
Polyneuropathy Onset / 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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