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Diagnostic stewardship — USMLE Step 3 MCQ

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ModeratePreventive Medicine, Epidemiology, BiostatisticsDiagnostic stewardshipUSMLE Step 3

A hospital finds frequent urine cultures ordered for older inpatients with no urinary symptoms. Many patients receive antibiotics for asymptomatic bacteriuria and develop diarrhea. Which of the following is the most appropriate quality improvement measure?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: C — Create criteria-based urine culture ordering with feedback to clinicians

Diagnostic stewardship reduces inappropriate testing and downstream overtreatment, particularly for asymptomatic bacteriuria.

Reference: USPSTF methods; CDC epidemiology and biostatistics principles