EMG Lab- What is it?
- Simply put, an EMG or electromyography test measures the response of muscles to stimulation. It's most often performed on patients with symptoms of weakness and decreased muscle strength. The test shows whether the weakness is caused by a neurological or muscle condition.
Patients with peripheral neuropathies, neuromuscular junction disorders, myopathies and motor neuron diseases are candidates for an EMG test.
- How it's done
- To perform the test, a needle electrode is inserted through the patient's skin into the muscle. After the electrode is in place, the patient is asked to contract a muscle by bending an arm or leg. The electrical activity this electrode detects is displayed on an oscilloscope. This wave gives the physician information about the ability of the muscle to respond to nervous stimulation. Several electrodes may need to be placed at various locations to obtain an accurate study.
- What to expect
- The insertion of the electrodes through the skin may be uncomfortable -- similar to getting an injection -- but there are no lasting side effects. No special preparation for the testing is required. The exam usually takes about 20 to 60 minutes. When your exam is complete, an EMG technician will report the results to the physician who ordered the testing. Your physician will use these findings to help decide how to best treat your condition.
Click here to learn how to make an appointment.
|
