1 MCQs in Surgery for NEET PG
A 68-year-old man with hypertension and smoking history presents with a 2-week history of transient monocular vision loss in the left eye described as "a curtain coming down." Carotid Doppler ultrasound is performed. The structure marked **D** in the diagram shows an elevated peak systolic velocity of 240 cm/s in the internal carotid artery with an end-diastolic velocity of 110 cm/s and an ICA/CCA PSV ratio of 4.5. According to Society of Radiologists in Ultrasound (SRU) 2003 consensus criteria, what degree of stenosis is indicated by these Doppler parameters, and what is the most appropriate management?
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