The most common coagulation disorders haemophilia A and von Willebrand's disease are due to______________?
Correct answer: D. Factor VIII deficiency
- A. Factor IX deficiency
- B. Vitamin K deficiency
- C. Factor X deficiency
- D. Factor VIII deficiency
Explanation
Haemophilia A results from factor VIII deficiency, while von Willebrand disease involves defective von Willebrand factor with reduced factor VIII stability. Thus factor VIII is the best available option, although the two disorders are not identical.
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