Anemias USMLE Step 1 Practice Question
A 31-year-old pregnant woman at 24 weeks gestation presents with progressive fatigue and dyspnea on exertion. Vital signs: BP 118/76, HR 98, RR 18, Temp 37°C, SpO2 98%. She has celiac disease and stopped prenatal vitamins 3 months ago. Laboratory studies reveal hemoglobin 10.1 g/dL, MCV 112 fL, hypersegmented neutrophils, and serum B12 76 pg/mL. Neurologic examination shows intact vibratory sense. Which diagnosis best explains her findings?
Answer choices
- ALead poisoning
- BPyruvate kinase deficiency
- CVitamin B12 deficiency
- DFolate deficiencyCorrect answer
- EPolycythemia vera
- FIron deficiency anemia
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