KROK 1 2023 – Question 111 · KROK (Medicine) · Physiology

A patient complains of frequent bleeding from the gums. Blood test detects deficiency of blood coagulation factor II (prothrombin). What phase of blood coagulation is primarily disturbed in this patient?

  1. A. Fibrinolysis
  2. B. Fibrin formation
  3. C. Prothrombinase formation
  4. D. Thrombin formation
  5. E. Clot retraction
Hint

Consider the three phases of the coagulation cascade and which phase depends directly on conversion of the missing factor into its active enzyme form.

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