Coagulation Disorders USMLE Step 1 Practice Question
A 34-year-old woman who is 28 weeks pregnant presents with severe headache, visual disturbances, and right upper quadrant pain. Laboratory studies show platelet count 45,000/μL, Hgb 9.5 g/dL, and creatinine 2.1 mg/dL. Peripheral blood smear shows schistocytes. PT, aPTT, and fibrinogen are normal. Which of the following is the most likely diagnosis?
Answer choices
- AHELLP syndromeCorrect answer
- BThrombotic thrombocytopenic purpura
- CImmune thrombocytopenia
- DHemolytic uremic syndrome
- EDisseminated intravascular coagulation
- FPreeclampsia without severe features
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