Anatomy clinical correlates Quiz: Ace Your Exams

Get ready to dominate your medical and nursing exams by using our dynamic quizzes to elevate your knowledge and increase your confidence. Whether you're gearing up for the USMLE®, COMLEX®, or your next in-class assessment, Osmosis quizzes tackle key topics in pathology, diagnostics, and treatment approaches. By honing in on clinical readiness and decision-making, we make sure the knowledge you gain empowers you both in the classroom and in real-world practice. Jump in and supercharge your exam prep!

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A 55-year-old man is brought to the emergency department after sustaining a traumatic head injury in a motor vehicle collision. The patient was unresponsive and subsequently had a generalized tonic-clonic seizure during transport. Past medical history is significant for hypertension, type 2 diabetes mellitus, alcohol use disorder, and cocaine misuse. Temperature is 37.3°C (99.1°F), pulse is 59/min, respirations are 7/min and irregular, and blood pressure is 170/105 mm Hg. The patient is comatose with downward, fixed pupils and rigid extension of the upper and lower extremities bilaterally on physical examination. A cross-sectional CT scan demonstrates complete obliteration of the perimesencephalic and premedullary cisterns and a truncated brainstem with Duret hemorrhages. Which of the following is the most likely etiology of this patient’s presentation?  

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