Coagulation Disorders USMLE Step 1 Practice Question
A 19-year-old woman with no prior anticoagulant use presents with recurrent epistaxis and menorrhagia since menarche. She reports excessive bleeding for 2 weeks following tooth extraction last month. Vital signs: BP 118/76, HR 88, RR 16, Temp 37°C, SpO2 98%. Laboratory findings reveal platelet count 245,000/μL, bleeding time 12 minutes (prolonged), PTT 38 seconds (mildly prolonged), and normal PT. Which of the following is the most likely diagnosis?
Answer choices
- AHemophilia A
- BDisseminated intravascular coagulation
- CBernard-Soulier syndrome
- Dvon Willebrand diseaseCorrect answer
- EImmune thrombocytopenia
- FFactor V deficiency
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