1 MCQs in Medicine for NEET PG
A 72-year-old woman with hypertension, type 2 diabetes, and newly diagnosed paroxysmal atrial fibrillation (not yet anticoagulated) presents with sudden right-sided weakness, dysarthria, and expressive aphasia. Last known well 2 hours ago. NIHSS 14. Non-contrast CT brain excludes hemorrhage. MRI DWI/ADC is performed urgently. The structure marked **A** in the diagram shows a wedge-shaped high signal in the left MCA territory on DWI. Which of the following best explains the pathophysiology underlying this imaging finding?
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