Nerve Conduction Study - ENG (Electroneurography)

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Neurophysiology – All Treatments

What is an ENG test?

ENG stands for electroneurography and is a test of the nerves’ ability to conduct electrical signals. During the test, selected nerves are stimulated with small electrical impulses, while electrodes placed on the skin measure how quickly and how strongly the signals are conducted through the nerve.

A nerve conduction study can be used, among other things, to:

to investigate how electrical signals are transmitted through the nerves
detect or assess injuries or diseases of the peripheral nerves
determine whether a nerve is pinched or otherwise affected
assess the severity and extent of nerve damage

Depending on your symptoms and the nature of the examination, ENG may be supplemented with other neurophysiological tests, such as EMG. You will be informed about which tests are relevant in your case.

Patient information

How an ENG Test Is Performed

Before

On the day of the examination, you should avoid applying lotion to your arms, hands, and legs, as lotion can make the examination more difficult and affect the measurements.

You may eat and drink as usual and take your regular medication, unless otherwise agreed. It may also be helpful to wear clothing that makes it easy to access the areas to be examined.

Under

During the test, small electrodes are placed on the skin over the nerves and muscles to be examined. The nerves are stimulated with small electrical impulses, and the electrodes record how the signals are conducted through the nerve.

You will lie down during the exam. The electrical impulses may feel like short, slightly uncomfortable shocks.

The exam typically lasts 20–60 minutes, depending on which nerves are being examined.

After

After the exam, you can resume your normal activities.

The results of the examination will be evaluated by a doctor. Depending on the reason for the examination, you may receive your results immediately or during a follow-up visit.