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6 Cards in this Set

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What could cause a prolonged (a)PTT?
1. Factor deficiencies in the intrinsic or common pathways (ie. XI, prothrombin, fibrinogen)
2. Plasma inhibitors (antibodies, heparin, fibrin degradation products)
3. Vitamin K deficiency
What could cause a prolonged PT?
1. Factor deficiencies in the extrinsic or common pathways (ie. VII, V, prothrombin, fibrinogen)
2. Plasma inhibitors (antibodies, heparin, fibrin degradation products)
3. Vitamin K deficiency
What does Thrombin Time essentially measure?
Firbinogen activity
If a bleeding patient's clotting time does not correct upon mixing his blood with normal blood, what is the etiology?
Specific or nonspecific inhibitory factor (ie antibody)
What are the two types of bleeding disorders?
1. Platelet disorders
2. Coagulation factor disorders
Which coagulation factors appear to play no role in hemostasis in vivo?
XII, prekallikrein, HMWK