Which of the following results of an NCS reflects a decrease in conduction velocity?
A) An increase in latency
B) Decreased compound muscle action potential (CMAP) duration
C) A decrease in latency
D) Increased CMAP amplitude

Question

Quizplus · Accepted Answer

An increase in latency indicates a slower nerve conduction velocity. Choice B (decreased CMAP duration) and D (increased CMAP amplitude) are not indicative of a decrease in conduction velocity. Choice C (a decrease in latency) is actually indicative of an increase in conduction velocity.

Which of the Following Results of an NCS Reflects a Decrease