nerve conductions & electromyography
Nerve conductions (NCV) and Electromyography (EMG): Nerve conductions determine how well individual nerves transmit a stimulus by calculating the speed it travels and measuring the time it takes from point to point, as well as how many fibers are working. EMGs give information on the condition of the nerves in specific muscles, and may point to a problem with a nerve root exiting the spinal cord. These tests are useful in detecting disorders such as carpal tunnel syndrome, cervical or lumbar nerve problems and peripheral nerve entrapments or damage from diabetes. They are also useful in testing various muscle disorders. They can help evaluate recovery in peripheral nerve lesions. NCVs involve a series of small electric "shocks" at different sites on the limbs which usually cause a twitch of the fingers or feet. Most people describe the feeling as "weird", and tolerate it very well. EMGs use a thin pin electrode to help the physician listen to and watch the nerve activity within muscles to see if there has been an injury. The test takes a total of about an hour. Please dress comfortably for your test, keeping in mind we need to get to your arms or legs. Loose clothes are best. Avoid lotions on your skin. Eat and take medications as you would normally.