【摘 要】
:
目的 应用彩色多普勒血流显像(color Doppler flow imaging,CDFI)评估椎动脉起始段支架术后疗效、术后再狭窄发生率及相关危险因素的影响.方法 椎动脉起始段支架置入术治疗的
【机 构】
:
首都医科大学宣武医院血管超声科,首都医科大学宣武医院神经外科
论文部分内容阅读
目的 应用彩色多普勒血流显像(color Doppler flow imaging,CDFI)评估椎动脉起始段支架术后疗效、术后再狭窄发生率及相关危险因素的影响.方法 椎动脉起始段支架置入术治疗的患者135例(135枚支架),根据支架类型分为裸支架组70枚,药物洗脱支架组65枚.所有患者于术前及术后1月、3月、6月、12月行CDFI检查,比较术前与术后1月的狭窄段管径、狭窄段及椎间隙段的收缩期流速(PSV)、舒张期流速(EDV)及血管阻力指数(RI).统计支架术后再狭窄发生率,分析不同危险因素对支架再狭窄的影响.结果 CDFI结果 显示支架置入术后1月狭窄段管径由术前(1.20土0.38)mm增加至(2.61±0.49)mm(P=0.000),狭窄段PSV和EDV分别由术前的(296.02±113.86)cm/s和(90.08±47.59)cm/s下降为(113.47±36.35)cm/s和(32.21±12.69)cm/s(P=0.000),椎间隙段PSV及RI明显改善,分别由术前的(46.88±17.46)cm/s和0.54±0.10升高为(67.79±24.31)cm/s和0.62±0.09(P=0.000).CDFI随访1~12个月(中位数为7个月),3个月、6个月、12个月的累积支架再狭窄率分别为7.9%、16.9%和25.0%.药物洗脱支架组的再狭窄率明显低于裸支架组(P<0.05).药物洗脱支架可显著降低再狭窄的发生率(OR=0.388,95%CI:0.162~0.931,P=0.034),残余狭窄是再狭窄发生的独立危险因素(OR=3.758,95%CI:1.498~9.427,P=0.005).结论 CDFI可以评估椎动脉起始段支架疗效,及时发现支架再狭窄.椎动脉起始段支架再狭窄发生率较高,药物洗脱支架可以有效预防早期支架再狭窄.
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