Coagulation Disorders USMLE Step 1 Practice Question
A 28-year-old man with no significant past medical history presents with spontaneous bleeding from the gums, blood in the stool, and a petechial rash. His laboratory results show PT 14 seconds, aPTT 45 seconds, platelet count 45,000/μL, and fibrinogen 120 mg/dL. Which of the following is the most likely diagnosis?
Answer choices
- AImmune thrombocytopenia
- BHemophilia A
- CDisseminated intravascular coagulationCorrect answer
- DVitamin K deficiency
- Evon Willebrand disease
- FThrombotic thrombocytopenic purpura
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