What do jitter results from EMG testing measure in myasthenia gravis?
EMG testing, specifically single-fiber electromyography (SFEMG), measures the electrical signals in your muscle nerves. This test is particularly helpful for diagnosing mild cases of myasthenia gravis that might be missed by other tests.
During the Show Full Answer
What do jitter results from EMG testing measure in myasthenia gravis?
EMG testing, specifically single-fiber electromyography (SFEMG), measures the electrical signals in your muscle nerves. This test is particularly helpful for diagnosing mild cases of myasthenia gravis that might be missed by other tests.
During the test, electrodes are placed on your skin. Some deliver small electrical shocks to your nerves, while others record how your muscles respond.
The most common type is repetitive nerve stimulation (RNS), which delivers repeated electrical shocks to the nerves. In people with MG, the muscles quickly become tired after repeated shocks, showing how well your nerves communicate with your muscles.
SFEMG is more accurate than RNS, though it's less commonly used and harder to perform. These tests essentially measure how well the brain communicates with muscles and how the neuromuscular junction has been damaged.
April 21
Join
Your Privacy Choices
