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A Ischemic Stroke is a sudden loss of function due to loss of blood supply to an area of the brain that controls that function. It is usually caused by partial or complete blockage of an artery that supplies the brain. In this animation, atherosclerosis in the carotid artery of the neck reduces blood flow to the brain. A rupture in the plaque can cause a blood clot to form. This clot may break loose and travel to an artery in the brain where it becomes lodged and totally blocks blood flow, causing permanent damage. Bleeding of an artery in the brain can also cause a stroke. Stroke can cause loss of function (use of an arm, leg or drooping of the face).
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