NERVE
STUDY TESTING (EMG/NCV)

Why is this procedure done?
EMG/NCV’s will be ordered if you are having symptoms including pain, numbness/tingling, or weakness in your arms or legs. EMG/NCV’s test the nerves and muscles of the body’s extremities, looking for a problem in either one of these areas. An EMG/NCV may be ordered to see if you have carpal tunnel syndrome, a pinched nerve(s), or another muscle or nerve problem. There are many other medical problems that may also suggest the need for an EMG. Please discuss further with your physician if you feel you may need this test.

How do I prepare for this procedure?
No special preparation is necessary. Please wear loose fitting clothing, short sleeves or tank top, and shorts if possible to allow your muscles and nerves to be easily tested. If you are taking blood thinners such as warfarin/Coumadin or have a pacemaker please notify the physician. This does not prevent the study from being done but special precautions are taken. Please do not use any skin lotion, creams, ointments or oils for 24 hours before the procedure.

What happens during this procedure?
The test consists of two parts. The first part is the Nerve Conduction Study. In this part brief electrical stimulations are delivered to your arm or leg to evaluate for nerve dysfunction. When this happens, you will feel a tingling sensation that may or may not be painful. During the nerve conduction study, the doctor or the technician performing the study will occasionally be pausing to make calculations and measurements. The second part of the test is called the Needle Examination. This part evaluates the muscle to see if there has been any damage to it as a result of the nerve or muscle problem. Usually multiple muscles are sampled in each extremity being tested. The needle is usually inserted in the relaxed muscle and moved inside gently in order to record the muscle activity. During the needle exam, no electrical stimulation is given.

What are the side effects?
There are no known long-lasting side effects. Short-term post-injection soreness can last for a few hours afterwards. Please discuss any specific concerns with your physician.

What happens after this procedure?
You may experience soreness. Ice and stretching exercises may help to lessen the discomfort.

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