SPINE INSTITUTE NORTHWEST PHYSICIAN BIOGRAPHY

PHILOSOPHY

In performing electrodiagnostic testing (EMG), I strives for diagnostic accuracy and testing that is as comfortable as possible.

Dr. Chung answers questions about electrodiagnostic testing:

What is electrodiagnostic testing?

If a nerve is impaired or injured, it may cause weakness, pain or numbness. Electrodiagnostic testing can indicate if there has been an injury to the nerve. Nerve damage relating to pinched nerves in the neck or back, carpal tunnel, generalized nerve problems or certain primary diseases of muscle may be diagnosed by this testing. Electrodiagnostic testing is usually composed of two separate tests, electromyography (EMG) and nerve conduction studies (NCS).

What is electromyography (EMG)?

EMG can help to determine if your medical problem is affecting the skeletal muscle and/or the nerves that innervate them. This study can detect if there has been muscle and/or nerve damage, and if so, the severity and how active vs. chronic. During an EMG study, I will analyze the electrical activity in your muscles by inserting the tip of a small, fine pin into the muscle. Pin insertion may cause mild temporary discomfort. Only brand new, sterile, laboratory sealed disposable pins are used for each patient and are discarded after use.

Is EMG testing painful?

This test is usually well tolerated. However, once the pin is placed in the muscle, there can be a range of responses from no pain to mild discomfort. I make every effort to minimize discomfort. I have adopted and mastered the best practices in performing EMG exams in the most comfortable fashion possible. Once the exam is over, there is usually no further discomfort.

What are nerve conduction studies (NCS)?

During NCS, I will tape small electrodes on the skin and apply a brief electric stimulus to different portions of the motor and sensory nerves. Nerve stimulation causes a tingling sensation reminiscent of the static shock you receive when touching a metal object after walking across a carpet. I evaluate the electrodiagnostic responses of the nerve or muscle being tested and can determine if the nerve impulse is conducted normally, slowed, or not transmitted at all.

What do I wear for my EMG/NCS test?

For this test, it is recommended that you wear comfortable, loose clothing.

What do I need to do to prepare for the test?

EMG and nerve conduction testing does not require any preparation on your part, although it is helpful to avoid use of skin lotions on the day of testing. You may continue all of your usual medications including anticoagulants (blood thinners). There are no significant side effects to testing and you will be able to return to your normal activities immediately following completion of the test.

Who performs my EMG?

All electrodiagnostic testing is completed entirely by me. We do not use technicians or other non-physicians in your testing. I will take a careful history and perform a directed examination to customize your testing in relation to your problem.

When can I expect the test results?

The results of testing and test interpretation can be reviewed with you immediately after your testing and sent to your referring provider on the same day. Recommendations for specific treatment based on your test results will be given to you by your provider.

Will my insurance cover this test?

EMG and nerve conduction testing is routinely covered by most health insurances as a very accurate diagnostic testing procedure. Some insurances require a co-pay and/or prior authorization. Please call your health insurance provider if you are unsure.