Why must an ENMG examination be delayed until about 21 days after an axonopathy?
A) Three weeks is the approximate amount of time needed for Wallerian degeneration of the nerve to proceed.
B) It takes about 3 weeks for axons to begin regeneration.
C) Anterior horn cells will restore axoplasmic flow after 21 days.
D) It takes about 3 weeks for post-injury inflammation to subside.

Question

Quizplus · Accepted Answer

Three weeks is the approximate amount of time needed for Wallerian degeneration of the nerve to proceed. During this process, the distal portion of the axon degenerates and clears the way for regrowth. It is important to wait until this process is complete before conducting an ENMG examination to avoid producing false-negative results.

Why Must an ENMG Examination Be Delayed Until About 21