Antimicrobials USMLE Step 1 Practice Question
A 19-year-old college student presents with fever (38.9°C), dry cough, and dyspnea. Vital signs show HR 102/min, RR 22/min, BP 118/76 mmHg, SpO2 94% on room air. Chest X-ray reveals patchy interstitial infiltrates. PCR testing confirms Mycoplasma pneumoniae. He denies recent antibiotic use. The prescribed medication binds the bacterial 50S ribosomal subunit and inhibits translocation. Which of the following medications was most likely prescribed?
Answer choices
- AGentamicin
- BCefazolin
- CDoxycycline
- DLevofloxacin
- EAzithromycinCorrect answer
- FErythromycin
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