More Tests Used to Identify Myasthenia Gravis

Edrophonium Test
The edrophonium test requires the intravenous administration of edrophonium chloride, which is a drug that blocks the degradation (breakdown) of acetylcholine and temporarily increases the levels of acetylcholine at the neuromuscular junction. In people with ocular myasthenia gravis, edrophonium chloride will briefly relieve weakness.
  
Nerve Conduction Study
A nerve conduction study tests for specific muscle "fatigue" by repetitive nerve stimulation. This test records weakening muscle responses when the nerves are repetitively stimulated.
 
Single Fiber Electromyography (EMG)
During a single fiber electromyography (EMG), single muscle fibers are stimulated by electrical impulses. This procedure can detect impaired nerve-to-muscle transmission. An EMG will measure the electrical potential of muscle cells. Muscle fibers in patients with myasthenia gravis, as well as other neuromuscular disorders, do not respond as well to repeated electrical stimulation compared to muscles of normal individuals.
 
Computed Tomography (CT) Scan
A computed tomography (CT) scan may be used to identify an abnormal thymus gland or the presence of a thymoma, which is a tumor of the thymus gland.
 
Pulmonary Function Test
A pulmonary function test, which measures breathing strength, helps predict whether respiration may fail and lead to a myasthenic crisis.
Know the Signs - Concussion Safety

Myasthenia Gravis Disease

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