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Myasthenia Gravis Quiz

Myasthenia Gravis Quiz

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Question 1 of 4

1. Question

A 35-year-old woman is newly diagnosed with Guillain Barré syndrome. What is the underlying pathology?

Demyelination of peripheral motor neurons
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Inhibition of acetylcholine release from presynaptic terminals
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Autoantibodies blocking postsynaptic acetylcholine receptors
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Destruction of motor cortex neurons
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Question 2 of 4

2. Question

A 45-year-old man is suspected to have myasthenia gravis. Which test is most useful for diagnosis?

Repetitive nerve stimulation
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Serum anti-AChR antibody test
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Ice pack test
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Chest CT
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Question 3 of 4

3. Question

A patient with known myasthenia gravis develops respiratory failure. What is the most appropriate management?

Increase dose of pyridostigmine
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Administer intravenous immunoglobulin (IVIG)
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Begin long-term corticosteroids
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Refer for thymectomy
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Question 4 of 4

4. Question

What is the mechanism of action of pyridostigmine in myasthenia gravis?

Suppresses antibody production
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Inhibits muscle-specific kinase (MuSK)
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Increases acetylcholine at the neuromuscular junction
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Enhances post-synaptic receptor sensitivity
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