EMG stuff

Question 1

What are positive sharp waves, and what do they represent?

Answer 1

Spontaneous discharges of muscle fibers 2/2 impaired innervation of the muscle being tested

Question 2

What are fibrillation potentials, what do they mean?

Answer 2

acute or ongoing impaired innervation

Question 3

What are complex repetitive discharges?

Answer 3

Groups of spontaneously firing action potentials, seen in longstanding disorders of muscle

Question 4

Temporal dispersion on CMAP testing is generally indicative of what pathology?

Answer 4

Acquired demyelinating diseases