Neurological Testing Information and Instructions - EMG/NCS

A NCS (nerve conduction study) is an electrical test used to detect abnormal nerve conditions such as found in carpal tunnel syndrome. Small surface electrodes are taped over a nerve and the nerve is stimulated with an electrical impulse. The electrical activity generated by the nerve is evaluated by the neurologist or technician performing the exam. A typical NCS appointment may last from 30 minutes to one hour.

Sometimes the neurologist or technician evaluating your condition may decide that a more invasive test is necessary. An EMG (electromyogram) is a test that measures electrical activity of the nerves and muscles. This test is done to evaluate how your nerves and muscles are functioning and is done on an as needed basis. A small, sterile needle is inserted in the muscle to be studied and the neurologist evaluates the electrical activity that is produced by the muscle. A typical EMG appointment usually lasts about an hour.

Although the NCS and EMG are safe exams, it is a good idea to let the neurologist or technician performing the test know if:

• You have a pacemaker or defibrillator
• You are taking Coumadin/Warafin

There are no “side effects” or significant risks associated with these tests; however, there is some discomfort with each of these tests. The level of discomfort will vary from patient to patient. IF YOU ARE TAKING PAIN MEDICATION FOR ANY REASON, PLEASE DO NOT SKIP A DOSE PRIOR TO THE NCS/EMG EXAM! You do not need to be having pain or numbness the day of the test in order for the test to be reliable. It would be helpful if your hands/legs are free from lotion for the test.

You will be able to resume your normal level of activity after the exam.

Disclaimer
If you think you have a MEDICAL OR PSYCHIATRIC EMERGENCY, CALL 911 IMMEDIATELY or go to the nearest hospital. DO NOT attempt to access emergency care through this web site. An emergency medical condition is a medical or psychiatric condition that manifests itself by acute symptoms of sufficient severity (including severe pain) such that you could reasonably expect the absence of immediate medical attention to result in any of the following: serious jeopardy to your health, serious impairment to your bodily functions, or serious dysfunction of any bodily organ or part. An emergency medical condition is also "active labor," which means a labor when there is inadequate time for safe transfer to a Plan hospital (or designated hospital) before delivery or if a transfer poses a threat to the health of the member or unborn child.

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