A study on correlative factors of the restenosis post stent implantation of intracranial and extracranial arteries stenosis
DUAN Chun-miao;WANG Tie-jun;CHEN Shu-ge;Neurology Department,Daxing Hospital Affiliated to Capital Medical University,Beijing;
Objective: To investigate the correlative factors of the restenosis post stent implantation of intracranial and extracranial arteries stenosis. Methods: The clinical documents of 142 patients with intracranial and extracranial arteries stenosis who were treated with stent implantation were researched by using retrospective analysis. All of them were followed up for one year by carotid color ultrasonography, transcranial Doppler(TCD) sonography, computed tomographic angiography(CTA) and digital subtraction angiography(DSA). The patients were divided into restenosis group and normal group according to whether occurred restenosis in the stent. The correlations between postoperative restenosis and various risk factors, such as gender, age, diameter of stent, hypertension and others, were analyzed and compared, and Logistic regression was adopted to identify which was risk factor. Results: 163 stents were implanted in 142 patients and the number of carotid artery stents was 72(44.2%), and the number of vertebral artery origin stents was 48(29.4%), and the number of intracranial segment stents of vertebral artery was 11(6.7%), and the number of proximal segment stents of subclavian artery was 27(16.6%), the number of basilar artery stent was 1(0.6%), and the number of cerebral middle artery M1 stents was 4(2.4%). After one-year following up, 17 patients(12.0%) and 19 stents(11.7%) occurred restenosis. The results of single factor analysis indicated that smoking, cerebral infarction history and diameter of stent were correlative with restenosis, respectively. And Logistic regression suggested that smoking, cerebral infarction history and diameter of stent might be the risk factors of restenosis after stent was implanted, and their correlations were significant, respectively(OR=3.754, OR=3.411, OR=1.228, P0.05). Conclusion: Intracranial and extracranial arteries restenosis after stent is implanted is closely correlative with smoking, cerebral infarction history and diameter of stent, and these factors were risk factors of restenosis post stent implantation.
【CateGory Index】： R651.1