EMG

Question 1

Abnormal Potentials: Spontaneous: Fibrillation Potentials

Answer 1

Indicative of LOWER MOTOR NEURON disease

Question 2

Abnormal Potentials: Spontaneous: Positive Sharp Wave

Answer 2

Denervated muscle disorders at rest, primary muscle disease such as muscular dystrophy

Question 3

Abnormal Potentials: Spontaneous: Fasciculations

Answer 3

Irritation/degeneration of anterior horn cell, nerve root compression or muscle spasms

Question 4

Abnormal Potentials: Spontaneous: Repetitive Discharges

Answer 4

Myopathies, lesion of anterior horn cells and peripheral nerves

Question 5

Abnormal Potentials: Voluntary: Polyphasic Potentials

Answer 5

Myopathies, muscle or peripheral nerve involvement