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Myasthenia Gravis
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Myasthenia Gravis Diagnosis & Tests
Examination may be normal or may show muscle weakness that progressively worsens as the muscle is used. In many patients the eye muscles are affected first. Reflexes and sensation are normal. Weakness may affect the arms, legs, breathing or swallowing muscles and any other muscle group.
- Standard EMG results are usually normal. Repetitive stimulation (type of nerve conduction studies) are more sensitive.
- Single-fiber EMG is even more sensitive.
- Acetylcholine receptor antibodies may be present in the blood.
- A Tensilon test is positive in some cases but must be interpreted carefully by a doctor experienced at this. Baseline muscle strength is evaluated. After Tensilon (edrophonium, a medication that blocks the action of the enzyme that breaks down the transmitter acetylcholine) is given, muscle function may improve.
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• Definition
• Myasthenia Gravis Overview, Causes, & Risk Factors
• Myasthenia Gravis Symptoms & Signs
• Myasthenia Gravis Diagnosis & Tests
• Myasthenia Gravis Treatment
• Myasthenia Gravis Prognosis
• Myasthenia Gravis Complications
• Myasthenia Gravis Support Groups
• Calling Your Health Care Provider
• Pictures & Images
Topics that might be of interest to you Diseases & Conditions
• Autoimmune Disorders
• Gilles de la Tourette Syndrome
• Hyperthyroidism
• Rheumatoid Arthritis
• Systemic Lupus Erythematosus
Tests & Exams
• Acetylcholine Receptor Antibody
• Electromyography
• Nerve Conduction Velocity
• Tensilon Test
Other Topics
• Antibody
• Breathing Difficulty
• Chronic
• Drooling
• Enzyme
• Eyelid Drooping
• Facial Paralysis
• Fatigue
• Heimlich Maneuver
• Hoarseness or Changing Voice
• Immune Response
• Intravenous
• Muscle Cramps
• Muscle Function Loss
• Myasthenia Gravis - Resources
• Speech Impairment (Adult)
• Stress and Anxiety
• Swallowing Difficulty
• Vision Problems
• Weakness
Review Date : 7/26/2002
Reviewed By : Joseph V. Campellone, M.D., Division of Neurology, Cooper Hospital/University Medical Center, Camden, NJ. Review provided by VeriMed Healthcare Network.
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