Please arrive 10 – 15 minutes early for registration, or bring the completed downloaded paperwork with you Click here for Electrodiagnostic: EMG/NCS or SEP Consultation Forms. No special preparation is required, except to keep the skin free of any body lotion on the day of the examination. It is always helpful to bring a list of all your medications, but you do not need to limit food or medications except if you are being evaluated for Myasthenia Gravis. If you have had: Bone, CT, or MRI scans, and/or X-Rays or other specialized tests of relevance, then bring copies of the reports with you if available.
The examinations are done while you are lying either on your back, side or abdomen. It takes about 30 – 60 minutes for a one to two extremity examination. Everything possible has been done with this test to keep any pain that you may experience to a minimum, but you have the right to stop the procedure at any time. In excess of 4500 of these examinations are done each year in our office, and all of our Electrodiagnostic physician specialists are highly trained with additional Board Certification held by the American Board of Neuromuscular and Electrodiagnostic Medicine/AANEM.
After the test is completed, you may carry on your normal daily routine. The electrodiagnostic physician interprets the results of your study, and completes a detailed report which is sent to the referring physician or health provider. He/she will consider the results and make the best decision about the next step in your evaluation and/or treatment best suited for your problem.
Electrodiagnostic Study is a procedure which commonly includes two components: EMG (Electromyogram), and NCS (Nerve Conduction Study). For those with implanted Deep Brain Stimulators, the unit will need to be temporarily turned off prior to Electrodiagnostic testing. For those with Cardiac Pacemaker-Defibrillators, having detailed information about your particular unit is important.
During an EMG study, the physician analyzes the electrical activity in muscles by inserting a fine pin electrode. Electrode insertion maycause mild temporary discomfort. The physician can determine whether the muscle, and the nerve supplying that muscle, is working properly by analyzing the firing pattern of muscle fibers on a video monitor and listening over a loudspeaker. Evaluation of both the resting muscle membrane as well as the recruitment pattern from the muscle fibers yields valuable information. Only brand new, laboratory sealed and sterilized disposable needles are used for every patient which are discarded after use to prevent transmission of infection including AIDS or hepatitis.
Click here for more detailed information that is available for patient’s referred for Electrodiagnostic: EMG study.
During NCS study, the physician tapes small electrodes on the skin and applies a brief electric stimulus to different portions of motor and sensory nerves. Nerve stimulation causes a tingling sensation. The physician evaluates the electrical responses of the nerve or muscle being tested and can determine if the nerve impulse is (a) conducted normally, (b) at a slow speed, or (c) not transmitted at all.
Click here for more detailed information that is available for patient’s referred for Electrodiagnostic: NCS study.
On occasion, other specialized studies may be requested to include: SEP Study
- Somatosensory Evoked Potential (SEP)
- Dermatomal Evoked potential (DSEP)
Somatosensory Evoked Potential (SSEP or SEP) and Dermatomal Somatosensory Evoked Potentialstudy(DSEP) is a specialized type of sensory NCV testing of peripheral nerves or any cutaneous site. Surface electrodes record the electrical responses utilizing computer averaging techniques measuring nerve conduction in an extremity, and through the spinal cord and brain.
Click here for more detailed information that is available for patient’s referred for Somatosensory Evoked Potential, SEP study.
Click here for more detailed information that is available for patient’s referred for Dermatomal Somatosensory Evoked Potential, DSEP study.