After insertion of a needle electrode during an EMG exam the examiner will cease needle movement for a period of time. Which of the following is a normal finding during this "rest" period?
A) Positive sharp waves
B) Fibrillations
C) Miniature end-plate potentials
D) Complex repetitive discharges

Question

Quizplus · Accepted Answer

During the rest period, miniature end-plate potentials may be seen in normal muscle tissue as a result of normal presynaptic activity at the neuromuscular junction. Positive sharp waves, fibrillations, and complex repetitive discharges are abnormal findings that may indicate neuromuscular disease or injury.

After Insertion of a Needle Electrode During an EMG Exam