Pharmacology Assessment

20 learning units • 10 questions per unit • 200 explained questions

Module 10 — Hemostasis, Thrombosis & Anemia

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Question 01 • Single best answer

Which receptor is inhibited by clopidogrel's active metabolite?

A. Cardiac beta-1 B. Platelet P2Y12 C. Gastric H2 D. Muscular nicotinic

Question 02 • Single best answer

How does unfractionated heparin enhance anticoagulation?

A. Inhibits vitamin K recycling directly B. Activates platelet thromboxane C. Dissolves every existing clot directly D. Potentiates antithrombin

Question 03 • Single best answer

Which process does warfarin inhibit?

A. Intestinal iron uptake exclusively B. Vitamin K recycling C. Platelet ADP synthesis exclusively D. Fibrin binding by plasminogen

Question 04 • Single best answer

Which test is routinely used to guide warfarin anticoagulation?

A. Serum amylase B. INR C. Peak expiratory flow D. Serum ferritin

Question 05 • Single best answer

Which drug directly inhibits factor Xa?

A. Dabigatran B. Aspirin C. Apixaban D. Clopidogrel

Question 06 • Single best answer

What is the major paradox of immune heparin-induced thrombocytopenia?

A. Protection from all clotting B. Thrombosis despite a falling platelet count C. Guaranteed absence of antibodies D. Universal correction by more heparin

Question 07 • Single best answer

Which agent reverses unfractionated heparin?

A. Folate B. Naloxone C. Atropine D. Protamine

Question 08 • Single best answer

How does alteplase promote clot breakdown?

A. Increases vitamin K recycling B. Directly raises platelet counts C. Activates plasminogen to plasmin D. Blocks iron absorption

Question 09 • Single best answer

What is tranexamic acid's principal action?

A. Directly inhibits factor Xa B. Inhibits fibrinolysis C. Stimulates platelet destruction D. Blocks erythropoietin receptors

Question 10 • Single best answer

Why should isolated folate treatment be avoided when B12 deficiency is unrecognized?

A. Folate always causes thrombocytopenia B. Folate converts B12 into iron C. B12 deficiency cannot cause anemia D. Anemia may improve while neurological injury persists

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