A 73-year-old woman presents with acute onset apathy and difficulty initiating speech. Vital signs show BP 158/92 mmHg, HR 88 bpm, RR 16, temp 37.2°C, SpO2 98% on room air. Examination reveals profound weakness and sensory loss of the left leg with relatively preserved strength in the left face and arm. Brain MRI shows acute ischemic stroke in the distribution of a single vessel. She denies recent trauma. Which artery is most likely affected?
- A)Basilar artery
- B)Middle cerebral artery
- C)Posterior cerebral artery
- D)Anterior cerebral arteryGABARITO
- E)Lenticulostriate artery
Explicação
Anterior cerebral artery is the correct answer because ACA infarction predominantly affects the medial frontal and parietal cortex, producing contralateral leg weakness and sensory loss, sometimes with abulia or urinary incontinence. Ver explicação completa e trilha adaptativa →