NCS and EMG for Children

What is an NCS & EMG Test

Nerve conduction (NCS) study: This test measures the rate and quantity of electrical activity that a nerve may convey. It helps to find if there is neuropathy(motor/sensory) or not. It helps to see for axonal or demyelinating type pf neuropathy.

Electromyography (EMG) study: This examines electrical activity in muscles at rest and when they are moved by choice (if possible) to search for specific muscle or nerve disorders.

 

What happens during a nerve conduction test?

    • Pediatric neurologist will ensure that he or she is as relaxed as possible throughout this test.
    • The doctor will place painless flat electrodes on top of the skin over the places where symptoms may be present. The electrodes resemble small buttons, but they include sensors that transmit vital information about how the nerves react to stimuli.
    • The electrode will be stimulated by the doctor using a small machine. It isn’t painful, but it may feel like static electricity. At times, the muscles may twitch slightly. On a computer screen, the doctor observes how the nerve reacts.
    • After reviewing the information, the doctor will notify you of the findings and any future recommendations.

What happens during an EMG?

    • The doctor will ensure that he or she is as relaxed as possible throughout this exam. The doctor inserts a very tiny needle, one at a time, into the muscles that need to be checked to assist in discovering the origin of symptoms. A small electrode on the needle monitors responses.
    • There may be some pain as the needle is inserted, but since the needle is so small, it should be minimal.
    • The doctor may instruct him or her to bend an arm or leg to cause the muscle to contract. The doctor will be able to observe what the muscle performs while it is at rest and when it is in motion on a computer screen. For one or two days following the test, there may be some bruising or pain in the muscle.

What does the result indicate?

NCS: axonal or demyelinating neuropathy

EMG: neuropathy or myopathy