5.0 of 6 Ratings
A 41-year-old man presents to the emergency room with sudden onset of blurry vision one hour ago. He states that he was resting at home when he noticed he had difficulty reading. Currently, he is also starting to see double, and is seeing two images on top of each other. Earlier today, he felt ill with nausea, vomiting, and watery diarrhea, which he attributed to food he had eaten at a picnic the day before. When asked which foods he ate, he lists potato salad, a hamburger, deviled eggs, and pickles made by his neighbor. He also heard that his friend who went to the picnic with him has developed similar symptoms and was seen in another hospital earlier. While in the emergency room, the patient’s temperature is 98.4°F (36.9°C), pulse is 75/min, blood pressure is 122/84 mmHg, and respirations are 13/min. Cranial nerve exam is notable for fixed pupillary dilation, and difficulty depressing both eyes. The remainder of his exam is normal. Which of the following is the pathogenesis of this patient’s presentation?
Decreased acetylcholine release
Overactivation of adenylate cyclase
Release of interferon-gamma
Degradation of phospholipids
Inhibition of GABA release
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