Coronary Artery Disease USMLE Step 1 Practice Question
A 31-year-old man presents to the emergency department after a stab wound to the left anterior chest. He is confused and diaphoretic with BP 82/56 mm Hg, HR 118/min, RR 24/min, and distended jugular veins. Heart sounds are muffled and distant. Chest X-ray shows a widened mediastinum. Breath sounds are present bilaterally. Which of the following additional findings is most likely?
Answer choices
- AWide pulse pressure
- BBounding carotid pulses
- CAn S4 gallop
- DPulsus paradoxusCorrect answer
- EFixed split S2
- FProminent systolic murmur at the left sternal border
See the full explanation
Get the correct-answer rationale, why each distractor is wrong, the underlying mechanism, and high-yield associations — plus adaptive practice that targets your weak areas — with a free MedBoardPRO account.