Nerve conduction velocity
Nerve Conduction Velocity
Nerve conduction velocity (NCV), pronounced as /nɜːrv kənˈdʌkʃən vəˈlɒsɪti/, is a test that measures the speed at which electrical impulses move along a specific nerve. It is often used in diagnosing neuromuscular disorders.
Etymology
The term "nerve conduction velocity" is derived from the Latin word "nervus" meaning "nerve", the Latin word "conduction" meaning "to lead or guide", and the Latin word "velocity" meaning "speed or swiftness".
Procedure
During a NCV test, the nerve is stimulated, usually with surface electrode patches attached to the skin. Two electrodes are placed on the skin over the nerve. One electrode stimulates the nerve with a very mild electrical impulse and the other electrode records it. The resulting electrical activity is recorded by another electrode. This is repeated for each nerve being tested.
Related Terms
- Electromyography (EMG): A diagnostic procedure to assess the health of muscles and the nerve cells that control them.
- Neuropathy: A term that refers to general diseases or malfunctions of the nerves.
- Neurologist: A medical practitioner specializing in neurology and trained to investigate, or diagnose and treat neurological disorders.
See Also
References
External links
- Medical encyclopedia article on Nerve conduction velocity
- Wikipedia's article - Nerve conduction velocity
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