A Household Cluster of Descending Weakness After Home-Canned Peppers
Three members of one household present over 12 hours after eating home-canned peppers. A 58-year-old grandmother has diplopia, dysphagia, and drooling; a 34-year-old father has blurred vision and mild arm weakness; a 7-year-old child has abdominal cramps and vomiting but normal strength. None has fever. The grandmother's vital capacity is 12 mL/kg and falling. The state lab can test serum and food but results take 48 hours. Two other relatives ate the peppers and are asymptomatic.
1. What is your immediate airway and antidote plan for each patient, and would you give botulinum antitoxin before laboratory confirmation? Explain.
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Airway first: the grandmother has bulbar weakness and a vital capacity of 12 mL/kg and falling - intubate before respiratory failure, with suction ready. Give botulinum antitoxin as soon as botulism is suspected; do not wait for the 48-hour laboratory result, because antitoxin only neutralizes circulating toxin and cannot reverse established paralysis. The father and child should also be evaluated for antitoxin; the child has only GI symptoms but should be monitored closely. Antitoxin is equine heptavalent for this age group; check for horse-serum allergy and be ready for anaphylaxis. The asymptomatic relatives do not need prophylactic antitoxin; observe them.
2. How do you distinguish this from myasthenia gravis, Guillain-Barre, and tick paralysis at the bedside, and what tests help?
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Bedside clues: botulism is descending, symmetric, afebrile, with diplopia, dysphagia, dry mouth, and GI symptoms; myasthenia gravis is fatigable and often ocular or bulbar without GI symptoms; Guillain-Barre is ascending and areflexic; tick paralysis is ascending with a tick found on examination. Tests: edrophonium is not reliable; repetitive nerve stimulation and single-fiber EMG can support botulism, and serum and food testing confirms. Check vital capacity frequently. The absence of fever and the food history favor botulism.
3. What public health and food-safety actions are required, and how do you manage the asymptomatic exposed relatives?
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Public health: notify the state health department and CDC immediately; retain the home-canned peppers, jar, and any leftover food for testing; interview all who ate them. Do not discard the food. Asymptomatic exposed relatives: observe for 3-5 days, teach them to return for diplopia, dysphagia, or weakness, and do not give antitoxin prophylactically. Advise proper canning and discarding bulging jars. Manage the household's anxiety with clear explanations.