Neuromuscular Disorders USMLE Step 1 Practice Question
A 46-year-old man presents 24 hours after consuming home-canned vegetables with blurred vision, dysphagia, and dry mouth. He now reports progressive descending weakness. Vital signs show BP 128/82, HR 102, RR 16, temperature 37.2°C, and SpO2 98% on room air. Physical examination reveals dilated pupils and intact sensation. Serum electrolytes are normal. Which of the following is the most likely diagnosis?
Answer choices
- AMyasthenia gravis
- BGuillain Barré syndrome
- CBotulismCorrect answer
- DTetanus
- ELambert Eaton myasthenic syndrome
- FOrganophosphate poisoning
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