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EMG (Electromyography) And/Or NCS (Nerve Conduction Studies)

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EMG (Electromyography) And/Or NCS (Nerve Conduction Studies) Tempe ñ Phoenix ñ Gilbert ñ Scottsdale ñ Peoria ñ Show Low PHONE: (480) 962-0071 www.SonoranSpine.com ñ www.SpineResearch.org Patient Name: Date: Date of Birth: S O N O R A N S P I N E -- R E F E R E N C E Electromyography and Nerve Conduction Studies An electromyogram (EMG) measures the electrical The electrode will be moved a number of times to activity of muscles at rest and during contraction. record the activity in different areas of the muscle or in Nerve conduction studies (NCS) measure how well and different muscles. how fast the nerves can send electrical signals. Nerve conduction studies If you have leg pain or numbness, you may undergo Several electrodes are attached to your skin. Several these tests to determine how much your nerves are quick electrical pulses are given to the nerve, and the being affected. These tests check how well the spinal time it takes for the muscle to contract in response to nerves and the nerves in your arms and legs are the electrical pulse is recorded. The speed of the working and whether there is nerve irritation or response is called the conduction velocity. The same damage. They do not test for pain. nerves on the other side of the body may be studied for comparison. When the test is done, the electrodes Why It Is Done are removed. An EMG is done to determine muscle tissue or nerve damage. It can find the cause of weakness, paralysis, How It Feels or muscle twitching. EMG—During an EMG test, you may feel a quick, sharp pain when the needle electrode is put into a muscle. A Nerve Conduction Study is done to find damage to After the test, you may be sore and have a tingling the peripheral nervous system, which includes all the feeling in your muscles for up to 2 days. If your pain nerves that lead away from the brain and spinal cord gets worse or you have swelling, tenderness, or pus at and the smaller nerves that branch out from those a needle site, please call the office. nerves. NCS—You will be able to feel the electrical pulses. Only How to Prepare a very low-voltage electrical current is used, and each Tell us about all medications, vitamins, or supplements electrical pulse is very quick. you are taking. Some medicines can affect test results. You may need to stop taking some medication before If you have pain after testing, use ice or cold pack on you have this test. the sore area for 10-20 minutes at a time. You may take over-the-counter pain medication, such as If you are take any blood thinners (Coumadin or acetaminophen, ibuprofen, or naproxen. warfarin, Plavix, Lovenox, Eliqus, etc), please tell us before we start the testing. You do not need to stop Risks these but we do need to be aware. An EMG is very safe. You may get some bruising or swelling at some of needle sites. There is very little Wear loose-fitting clothing. Since the electrodes are chance of infection. attached to your skin, it is very important that your skin is clean and free of all oils, creams, and lotions. Results Your doctor will be able to tell you about some of the How It Is Done results of your nerve studies right after the tests. A full Electromyogram report may take up to 1 week. The skin over the areas to be tested is cleaned. A needle electrode that is attached by wires to a recording machine is inserted into a muscle by your doctor. Then the electrical activity in that muscle is I have read and understand these instructions: recorded while the muscle is at rest. Then the doctor will ask you to tighten the muscle slowly and steadily. Patient Signature This electrical activity is recorded. Date __________________________________ ELECTROMYOGRAPHY AND NERVE CONDUCTION STUDIES .
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