ABEM Nerve Conduction Studies & Electromyography

Question 1

What is the primary purpose of a nerve conduction study (NCS)?

Accepted Answer

To measure nerve signal transmission

Answer

To assess brain activity.

Answer

To examine muscle contraction.

Answer

To perform a surgical intervention.

Question 2

Which condition is commonly diagnosed using electromyography (EMG)?

Accepted Answer

Amyotrophic lateral sclerosis (ALS)

Answer

Asthma

Answer

Hypertension

Answer

Diabetes

Question 3

How are nerves typically stimulated in NCS?

Accepted Answer

Using electrical stimulation

Answer

Using ultrasound imaging.

Answer

Using magnetic resonance imaging.

Answer

Using surgical probes.

Question 4

What does EMG measure?

Accepted Answer

Electrical activity in muscles

Answer

Blood pressure in veins.

Answer

Respiratory function.

Answer

Cognitive processing speed.

Question 5

Which type of electrode is commonly used in EMG?

Accepted Answer

Needle electrodes

Answer

Patch electrodes

Answer

Glass electrodes

Answer

Disc electrodes

Question 6

What result in NCS suggests demyelination?

Accepted Answer

Slowed conduction velocity

Answer

Increased nerve amplitude

Answer

Shortened latency

Answer

Elevated muscle response.

Question 7

Why is patient history important before conducting EMG/NCS?

Accepted Answer

It guides test interpretation and electrode placement

Answer

It reduces the time of the test.

Answer

It allows the technician to skip testing.

Answer

It determines the room lighting.

Question 8

Which nerve is commonly tested in upper limb NCS?

Accepted Answer

Median nerve

Answer

Femoral nerve

Answer

Sciatic nerve

Answer

Trigeminal nerve

Question 9

What is a common indication for ordering EMG/NCS?

Accepted Answer

Numbness or tingling

Answer

Skin rash

Answer

Joint dislocation

Answer

Hearing loss