Bacteriology USMLE Step 1 Practice Question
A 35-year-old male presents to the emergency department with intense back pain. He is hydrated and given pain medication. After several hours, he passes a kidney stone. Laboratory analysis of the stone reveals that it is composed of struvite (magnesium ammonium phosphate). Infection with which of the following organisms promotes the production of such stones?
Answer choices
- AEscherichia coli
- BUreaplasma urealyticum
- CStaphylococcus saprophyticus
- DPseudomonas aeruginosa
- EProteus mirabilisCorrect answer
- FKlebsiella pneumoniae
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