Bleeding time is prolonged in_____________?
Correct answer: A. Von Willebrand's disease
- A. Von Willebrand's disease
- B. Haemophilia
- C. Henoch Schenolein purpura
- D. Telangiectasia
Explanation
Von Willebrand disease prolongs bleeding time because platelet adhesion is impaired through deficiency or dysfunction of von Willebrand factor, and factor VIII may also be reduced. Haemophilia mainly prolongs clotting time because it is a coagulation-factor deficiency with usually normal bleeding time.
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