Nerve conduction studies

Nerve Conduction Studies (NCS) are medical diagnostic tests commonly used to evaluate the function, especially the ability of electrical conduction, of the motor and sensory nerves of the human body. These studies are typically performed by medical professionals such as neurologists specializing in electromyography, physiatrists, and technologists.

Overview

Nerve conduction studies, along with EMG, are used to diagnose disorders of the nerves and muscles. These tests may be performed to identify nerve damage or destruction, and are often performed along with other tests such as MRI, CT scans, and blood tests.

Procedure

During a nerve conduction study, 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.

Indications

Nerve conduction studies are used to diagnose a number of medical conditions, including peripheral neuropathy, carpal tunnel syndrome, and Guillain-Barré syndrome.

Risks and Complications

While nerve conduction studies are generally safe, they may cause some discomfort, and there are some risks associated with the procedure. These include the risk of electrical shock, infection, and skin irritation.

See Also

• Electromyography
• Neurology
• Neuropathy

References

Nerve conduction studies Resources
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