Hemodynamic disorders · USMLE Step 1

Which factor is NOT part of Virchow’s triad for predisposition to thrombosis?

  1. Endothelial injury
  2. Hypercoagulability
  3. Abnormal blood flow
  4. Vascular permeability
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Correct answer: Vascular permeability

Virchow’s triad includes endothelial injury, hypercoagulability, and abnormal (stasis or turbulent) flow; vascular permeability per se is not one of the triad components.

Difficulty: Medium Question 18 of 19

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