USMLE-Rx Step 1 Qmax Challenge #1744

Check out today’s Step 1 Qmax Question Challenge.

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A 40-year-old patient with AIDS presents to the clinic with fatigue and weakness. X-ray of the chest is shown in the image. A methenamine silver stain of a bronchoalveolar lavage specimen reveals multiple organisms. Treatment with trimethoprim-sulfamethoxazole is contraindicated because the patient has a sulfa allergy.

Which of the following agents should be used to treat this patient’s infection?

A. Penicillin
B. Pentamidine
C. Ivermectin
D. Metronidazole
E. Protamine

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