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Why does a patient sometimes need surgery when he/she has a blockage of the blood vessel in the neck that is not producing any symptoms?

April 26, 2017blockage blood neck patient producing surgery symptoms vessel

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Why does a patient sometimes need surgery when he/she has a blockage of the blood vessel in the neck that is not producing any symptoms?

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A. In two scientific studies, it was found that patients who had greater than 70 percent stenosis, and underwent carotid endarterectomy, reduced their relative risk of stroke by 55 percent and patients with between 50 to 69 percent stenosis reduced their relative risk by 35 percent.