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Nerve Conduction Studies (NCS) 
Electromyography (EMG)

1.    What are NCS and EMG?

EMG (Electromyography) usually refers to both Nerve Conduction Studies (NCS) and EMG. Depending on the problem being investigated, you may require one or both of the procedures described below. NCS are used to test the functioning of the peripheral nerves in your hands, arms and/or legs. EMG testing is used to test the electrical activity within the muscles to help determine if weakness is caused by nerve damage or muscle disease. These tests are used to investigate a number of different muscle and nerve problems and will assist your Consultant in the diagnosis and management of your medical complaints or condition.

2.    Why have an NCS/EMG  test?

NCS are done to:

EMG is done to:

Measuring the electrical activity in nerves and muscles can help detect the presence, location, and extent of diseases that can damage nerves or muscle tissue. In case of nerve injury, the actual site of nerve damage can often be located. NCS and EMG are usually done together to provide more complete information.

3.    What should I do before the NC/EMG test?

4.    What happens during EEG test?

Before performing the NCS/EMG you will be explained each aspect of the test and answered any questions you may have. Test is done while lying on a bed or sitting in a reclining chair.

NCS: A number of sticky electrodes are placed on your hands or feet which can be easily removed afterwards. To test the nerve a small electrical pulse is given to the skin and your reactions are recorded. This is repeated at 2 or 3 points along the arm or leg. The electrical stimulation can be a little unpleasant, but should not cause too much discomfort.The corresponding nerves on the other side of the body may be studied for comparison. Depending on NCS results you may also have EMG.

EMGThe skin over the areas to be tested is cleaned with an antiseptic solution. A fine sterile electrode (like an acupuncture needle) is inserted into the specific muscle to be tested. The electrical activity in that muscle is recorded while the muscle is at rest, when contracting gently, and when contracting forcefully. The needle may be repositioned a number of times to record the electrical activity in different areas of the muscle or in different muscles. When the testing is completed, the needle is removed and those areas of the skin where a needle was inserted are cleaned. This takes a few minutes for each muscle. The procedure may sound worse than it actually is and causes only minor discomfort.

DurationDepending on the complexity of the problem, the study may take anywhere from 20-60 minutes or more.

5.    What happens after the NCS/EMG test?

 6.    How will the results of this test assist my consultant?      

7.    What are the consequences of not having NCS/EMG?      

8.    Are there any alternative ways of getting the same information that an NCS/EMG provides?

For appointment call (868) 624-8934.

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