Toxicology USMLE Step 1 Practice Question
A 29-year-old man is brought to the emergency department after being found in a running car in a closed garage. He presents with severe headache, confusion, and characteristic cherry-red skin. Vital signs: BP 118/76, HR 102, RR 20, Temp 37.2°C, SpO2 98% (falsely reassuring). Carboxyhemoglobin level is 28%. He denies chest pain or dyspnea. Which of the following is the most appropriate treatment?
Answer choices
- AHydroxocobalamin
- BAmyl nitrite
- CAdministration of 100 percent oxygenCorrect answer
- DN acetylcysteine
- EFomepizole
- FMethylene blue
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