438.A 44-year-old woman returns from a mountain excursion with headache
symptoms, nausea, and vomiting that are improving. Her initial vital signs
in the ED are HR of 93 beats per minute, BP of 120/60 mm Hg, RR of
18 breathsper minute, and oxygen saturation of 96% on 2-L nasal can-
nula. Her chest examination is clear to auscultation with no palpable over-
lying crepitus and there are no signs of peripheral edema. Which of the
followingmedications is indicated in this patient?
a. Acetazolamide
b. Dexamethasone
c. Nifedipine
d. Furosemide
e. Morphine
470 Emergency Medicine