Abstract
Objective To investigate the predictive factors for cerebral hyper-perfusion after carotid angioplasty and stent placement. Method About 2100 cases were choosen form 2001 to 2009. Two groups were followed. One was Fifty-six patients with carotid artery stenosis treated with stent implantation. This group was normal perfusion. The other group was the cerebral hyperperfusion group, in which the factors of hypertension, diabetes mellitus, degree of stenasis, compensation of blood vessels, blood pressure, the velocity of blood flow in middle cerebral artery were analyzed retrospectively. Results In the normal group and the cerebral hyperperfusion group (cerebral hemorrhage 8 eases were included), Logistic regression was suggested that degree of stenosis (B = 0. 637 ;P = 0. 034;OR = 1. 891), compensation of blood vessels(B =-1. 955;P =0.021 ;OR =0. 142) ,blood pressure(B =-1. 818;P =0.011 ;OR = 0. 162),the velocity of blood flow in middle cerebral artery(B = 1.278;P =0.031;OR =3.59) were closely correlated with hyperperfusion. Conclusions The risk factors of cerebral hyper-perfusion after carotid angioplasty and stent placement includes severe stenosis, without compensation of blood vessels, high blood pressure, the velocity of blood flow in middle cerebral artery. Key words: Carotid stenosis; Stents; Hyperperfusion; Factor
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