NERVE CONDUCTION STUDY Meaning and
Definition
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A nerve conduction study (NCS), also known as a nerve conduction velocity test, is a diagnostic procedure used to evaluate and measure the functionality of the peripheral nerves in the body. It is performed by a neurologist or an electrophysiologist and involves the application of electrical stimuli to specific nerves to assess their ability to conduct electrical impulses.
During a nerve conduction study, small electrodes are placed on the skin overlying the nerves being tested. A brief electrical stimulation is then administered to the nerve, causing a response that can be measured and recorded by the electrodes. The speed and amplitude of the nerve's electrical signal are measured, providing information about the nerve's functionality.
This test is commonly used to diagnose nerve injuries, compressions, or diseases that may affect the peripheral nerves. It can assist in determining conditions such as carpal tunnel syndrome, peripheral neuropathy, radiculopathy, and other conditions that cause weakness, numbness, or tingling sensations. Additionally, a nerve conduction study can help identify the severity and location of nerve damage, helping guide treatment decisions.
By assessing the conduction speed and potential blockages within the nerves, healthcare professionals can gain insights into the integrity and functionality of the peripheral nervous system. The results of a nerve conduction study can provide valuable information for determining the cause of symptoms and planning an appropriate treatment approach.
