Neuroanatomy USMLE Step 1 Practice Question
A 56-year-old woman presents to the emergency department with acute onset headache, nausea, and vomiting. She reports the headache is worst behind her right eye and in her right forehead. Temperature is 38.2°C, blood pressure 142/88 mmHg, heart rate 98 bpm. She is alert and oriented to person, place, and time. Neurologic examination reveals normal motor strength and tone throughout all extremities. Gait is steady and coordination is intact. Cranial nerves II-XII are grossly intact on bedside testing. Visual field testing by confrontation demonstrates a right homonymous hemianopia. The remainder of the neurologic examination is unremarkable. Which of the following vascular occlusions best explains her clinical findings?
Answer choices
- ARight anterior cerebral artery
- BLeft middle cerebral artery
- CLeft posterior cerebral arteryCorrect answer
- DRight posterior cerebral artery
- ERight vertebral artery
- FRight anterior choroidal artery
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