What is an NCV? |
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By definition, an NCV is an Nerve conduction velocity (NCV) test of the speed of conduction of impulses through a nerve. |
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How is an NCV test performed? |
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The nerve is stimulated, usually with surface electrodes, which are patch-like electrodes (similar to those used for ECG) placed on the skin over the nerve at various locations. One electrode stimulates the nerve with a very mild electrical impulse. The resulting electrical activity is recorded by the other electrodes. The distance between electrodes and the time it takes for electrical impulses to travel between electrodes are used to calculate the nerve conduction velocity. Electromyography is often done at the same time as the NCV test. |
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How do I prepare for an NCVtest? |
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No oils or lotion should be applied to the skin prior to the study, to allow for good contact on the skin.. See Neurology Associates specific instructions!
Infants and children:
The preparation you can provide for this test depends on your child's age, previous experiences, and level of trust. For general information regarding how you can prepare your child, see the following topics:
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How will the NCV test feel? |
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The impulse may feel like an electric shock. Depending on how strong the stimulus is, you will feel it to varying degrees, and it may be uncomfortable for you. You should feel no pain once the test is finished. Often the nerve conduction test is followed by electromyography (EMG) which involves pins, much like acupuncture pins, being placed into the muscle and you contracting that muscle. This can be uncomfortable during the test, and you may feel muscle soreness at the site of the pins afterwards as well.
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