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Endometritis — USMLE Step 2 CK MCQ

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HardObstetrics & GynecologyEndometritisUSMLE Step 2 CK

A 23-year-old Asian American woman comes to the urgent care clinic because of pelvic symptoms or pregnancy-related concerns. History and focused examination are notable for postpartum fever, uterine tenderness, and foul-smelling lochia after cesarean delivery. Temperature is 102.2°F (39.0°C), blood pressure is 108/66 mmHg, pulse is 112/min, respirations are 22/min, and oxygen saturation is 94% on room air. Physical examination confirms the key finding and shows no unrelated abnormality that would better explain the presentation. Focused laboratory studies and initial testing support the clinical pattern described in the stem. Which of the following is the most likely diagnosis?

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Correct answer: D — Endometritis

The vignette describes Endometritis, supported by postpartum fever, uterine tenderness, and foul-smelling lochia after cesarean delivery. Endometritis is the single best answer because it matches the diagnostic or management priority in this clinical setting. The other choices are plausible alternatives in related presentations, but they do not best fit the timing, findings, and guideline-directed approach described here.

Reference: https://www.acog.org/clinical/clinical-guidance#stage-9-order-35