Drug Interactions and Contraindications Quiz
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Questions and Answers

What is the most commonly used drug in a patient with chronic atrial fibrillation to prevent thromboembolism?

  • Oral direct thrombin inhibitors
  • Heparin
  • Aspirin
  • Warfarin (correct)
  • Which drug is recommended for unstable angina?

  • Heparin (correct)
  • Warfarin
  • Antiplatelet drugs
  • Oral inhibitors of factor Xa
  • In which condition are anticoagulants contraindicated due to an increased risk of bleeding?

  • Arterial circulation disorders
  • Venous thrombosis
  • Peptic ulcers (correct)
  • Oral direct thrombin inhibitors
  • Which type of drugs are effective in arterial circulation where anticoagulants have little effect?

    <p>Antiplatelet drugs</p> Signup and view all the answers

    What is the primary mechanism of action of Cyclooxygenase-1 (COX-1) Inhibitors like Aspirin?

    <p>Reduce thromboxane A2 synthesis</p> Signup and view all the answers

    What is a common contraindication for anticoagulant use?

    <p>Tuberculosis</p> Signup and view all the answers

    What is a contraindication for the use of heparin and LMWH?

    <p>Chronic alcoholism</p> Signup and view all the answers

    Which factor does Low Molecular Weight Heparins (LMWH) interfere with primarily?

    <p>Factor Xa</p> Signup and view all the answers

    Which factor enhances the effect of warfarin?

    <p>Debility</p> Signup and view all the answers

    Which drug is an oral direct thrombin inhibitor?

    <p>Dabigatran</p> Signup and view all the answers

    Which factor is inhibited by oral inhibitors of factor Xa?

    <p>Prothrombin</p> Signup and view all the answers

    What is a potential benefit of using LMWH compared to Heparin?

    <p>Need for laboratory monitoring</p> Signup and view all the answers

    Which medication is commonly used for the prophylaxis of DVT and Pulmonary embolism?

    <p>LMWH</p> Signup and view all the answers

    In which condition is the use of warfarin contraindicated?

    <p>Gastrointestinal ulcer</p> Signup and view all the answers

    What is a contraindication for warfarin therapy?

    <p>Pregnancy</p> Signup and view all the answers

    What are anticoagulants mainly used for?

    <p>Venous thrombosis</p> Signup and view all the answers

    Which drug reduces the effect of warfarin?

    <p>Rifampicin</p> Signup and view all the answers

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