Your skin needs to be clean and free of sprays, oils, creams, and lotions. The electrodes for the test are attached to your skin.You may be given a hospital gown to wear. Make sure that you understand exactly what your doctor wants you to do. He or she will tell you if you should stop taking it before your test. If you take aspirin or some other blood thinner, be sure to talk to your doctor.You may need to stop taking some medicines before you have this test. Some medicines can affect the test results. Tell your doctors ALL the medicines, vitamins, supplements, and herbal remedies you take.Nerve conduction studies are often used to help find nerve disorders, such as carpal tunnel syndrome. You may need nerve conduction studies to find damage to the nerves that lead from the brain and spinal cord to the rest of the body (peripheral nervous system). You may need an EMG to find diseases that damage your muscles or nerves or to find why you cannot move your muscles (paralysis), why they feel weak, or why they twitch. If they are done together, the nerve conduction studies are done before the EMG. Nerve conduction studies (NCS) measure how well and how fast the nerves can send electrical signals.ĮMG and nerve conduction studies are often done together. An electromyogram (EMG) measures the electrical activity of your muscles when you are not using them (at rest) and when you tighten them (muscle contraction).
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