What is the speed of the nervous line speed?
The speed of nervous lines, often shortened as NCV, measures the speed at which the electrical signal passes through the nerve. It is often used to diagnose nerve disorders or injury. The test uses electrodes similar to those used for an electrocardiogram that emit a slight electrical pulse, which in turn stimulates the nerve. The time that requires the electrical pulse to travel from one electrode to the next point to the speed of the nervous line.
Damaged nerves usually make signals at lower speed and strength than healthy nerves. Although nervous velocity is affected by insulating myelin cloak, most neuropathies are caused by damage to axon or long part of the nerve cell. Abnormal results usually indicate nerve damage such as axonopathy or axon damage; demyelinization or damage or loss of myelin case; or conductive block. The nerve lines speed test may usually distinguish between axon and myelin damage.
If a person experiences tingling, numbness, pain, weakness or other symptoms, a test of the speed of the nervous lead can be ordered. The test is usually performed in a neurological office by a specially trained technician or other healthcare worker. Since the nervous line can be slowed down by a low body temperature, normal temperature must be maintained during the test. Repairs connected to the electrodes are placed on the patient's skin at different locations and are introduced electric current with low intensity for nerve stimulation. The discomfort is usually minimal and distracts as soon as the test is completed.
After testing the nervous line speed, it is often followed by an electromyogram that measures electrical activity in the muscles to detect or exclude muscle disorders or damage. During the electromyogram, the needles are inserted into the muscles in various places apacient withdraws these muscles. This test can be painful and then patients can experience painST Muscles.
Based on the results of the nerve lines test and information obtained from the electromyogram, the neurologist may diagnose or exclude various disorders or injuries. Any type of spinal cord damage or nerve root compression can cause abnormal results. Other disorders that include damage or destruction of nerves include alcoholic or diabetic neuropathy, carpal tunnel syndrome and Guillain-Barre syndrome, an autoimmune disorder that often causes paralysis. The nerve lines test test can also be used to diagnose multiple sclerosis, seating dysfunction of nerve seating, brachial plexopathy and diphtheria. Since the speed of nervous lines measures surviving nerve fibers, it is possible that nerve damage may exist and not detected. Other test methods or other diagnostic tools can be used for further examination.