USMLE Step 1 - Question 34

A 64 year old male is being treated for with intravenous nitroprusside for hypertensive emergency. On day 3 of therapy he experiences a severe headache, nausea, and vomiting and becomes lethargic. The next day he experiences a seizure. Which of the following is the appropriate therapy at this time?

A. Methylene blue

B. Sodium thiosulfate

C. Sodium EDTA

D. Hemodialysis