Nerve conduction velocity are used to evaluate the function of the nerves.
There are mainly two types of nerves - motor and sensory. The nerve conduction studies are specially designed to perform motor nerve conduction and sensory nerve conduction.
Nerve conduction velocity is recommend for following diseases:
Neuropathy in patients with diabetes mellitus.
Connective tissue diseases.
Injury to the nerves.
Carpal tunnel syndrome.
Cervical/lumbar disc prolapse.
Intake of drugs, which may affect the nerves. (drugs taken for treatment of tuberculosis/ cancer).
Guillain Barre Syndrome.
Hereditary Neuropathy.
Myasthenia.
Symptoms of nerve involvement:
Tingling, numbness of hands/feet.
Burning sensation / pain in the hands and feet.
Decreased sensation in arms / legs.
Weakness /thinning of arms and legs.
Details of Procedure:
Test usually takes 20-30minutes.
Metal disc plates (electrodes) are placed on the skin over nerves.
Muscles and mild electrical stimulation is given and the response is recorded.
Usually two nerves in upper limbs and two nerves in lower.
Limbs are tested. It may be necessary to test more nerves depending on the neurological disease.
Instructions:
Wear loose clothes, which will allow easy examination.
Fasting not required.
For children who are uncooperative sedation may be required.