Toxicology USMLE Step 1 Practice Question
A 6-year-old boy with developmental delay presents with abdominal pain, constipation, and irritability. Vital signs show BP 105/68 mmHg, HR 98/min, RR 20/min, temperature 37.2°C. Laboratory studies reveal microcytic anemia (Hgb 9.2 g/dL), basophilic stippling on blood smear, and blood lead level of 72 mcg/dL. He denies recent seizures. The child lives in an older home undergoing renovation. Which medication is most appropriate for chelation therapy?
Answer choices
- ADeferasirox
- BPyridostigmine
- CN acetylcysteine
- DHydroxocobalamin
- ESuccimerCorrect answer
- FCalcium disodium EDTA
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