Surgery>>>>>Arterial Disease
Question 8#

The correct classification for the degree of stenosis in the internal carotid artery of a patient with a luminal diameter of 69% is:

A. Mild
B. Moderate
C. Severe
D. No stenosis

Correct Answer is B

Comment:

Atherosclerotic plaque formation is complex, beginning with intimal injury, platelet deposition, smooth muscle cell proliferation, and fibroplasia, and leading to subsequent luminal narrowing. With increasing degree of stenosis in the internal carotid artery, flow becomes more turbulent, and the risk of atheroembolization escalates. The severity of stenosis is commonly divided into three categories according to the luminal diameter reduction: mild (<50%), moderate (50-69%), and severe (70-99%). Severe carotid stenosis is a strong predictor for stroke.