Respiratory Quiz #17, Deep Venous Thrombosis and Pulmonary Emboli 

1. A 72-year-old woman presents to the emergency department with sudden onset of shortness of breath and pleuritic chest pain. She has a history of atrial fibrillation and was recently started on warfarin. A CT pulmonary angiogram confirms the presence of a pulmonary embolism. Which of the following is the most likely source of this patient's pulmonary embolism? 

Question 1 of 5

2. A 55-year-old man with a history of recurrent deep vein thrombosis is on long-term anticoagulation therapy. Which of the following is the primary mechanism by which anticoagulants prevent the extension of existing thrombi and the formation of new ones? 

Question 2 of 5

3. A 38-year-old woman is brought to the emergency department with acute onset of right leg swelling and pain. Doppler ultrasound confirms deep vein thrombosis. Which of the following inherited conditions is most likely to predispose this patient to recurrent venous thromboembolism? 

Question 3 of 5

4. A 65-year-old man presents with sudden onset of dyspnea and tachypnea one week after undergoing total hip replacement surgery. A ventilation-perfusion (V/Q) scan shows multiple perfusion defects with normal ventilation. What is the most likely diagnosis?

Question 4 of 5

5. A 28-year-old woman taking oral contraceptives presents with unilateral calf swelling and pain. Doppler ultrasound confirms the presence of a deep vein thrombosis. Which of the following mechanisms most likely contributed to the development of DVT in this patient? 

Question 5 of 5


 

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