Pulmonary Embolism USMLE Step 1 Practice Question
A 67-year-old woman presents on postoperative day 4 following total hip arthroplasty with acute dyspnea and pleuritic chest pain. Vital signs reveal heart rate 112 bpm, blood pressure 118/76 mmHg, respiratory rate 22/min, and SpO2 94% on room air. Examination demonstrates left calf swelling and tenderness; right lung auscultation is clear. D-dimer is elevated at 2.8 mcg/mL. Which of the following is the most likely diagnosis?
Answer choices
- AFat embolism syndrome
- BPneumocystis jirovecii pneumonia
- CPulmonary embolismCorrect answer
- DTension pneumothorax
- EStreptococcus pneumoniae
- FAcute myocardial infarction
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