复杂症状性大脑中动脉狭窄Solitaire支架置入术后疗效及血流动力学分析

目的分析复杂症状性大脑中动脉狭窄患者Solitaire AB支架置入术后疗效和血流动力学变化。方法回顾性连续纳入2013年6月至2016年6月湖北省第三人民医院神经内科行Solitaire支架置入术治疗复杂症状性大脑中动脉狭窄患者7例,经DSA证实狭窄率≥70%。7例患者中,男5例,女2例,平均年龄(70±8)岁;记录患者一般资料,包括临床症状、改良Rankin量表评分、狭窄程度、血管径路LMA分型及狭窄病变Mori分型、术后残余狭窄或再狭窄等,比较术前及术后1、7 d和3个月的血流动力学参数。结果对7例患者均成功置入Solitaire AB支架。(1)狭窄病变的Mori分型A型4例,B型2例,C型1例;血管径路LMA分型Ⅱ型4例,Ⅲ型3例。术前狭窄率为(80±7)%,术后残余狭窄率为(24±13)%,无手术相关并发症。随访期间无脑缺血事件发生。(2)支架置入术前及术后1、7 d和3个月,收缩期峰值流速(PSV)分别为(297±41)、(144±34)、(145±27)、(143±40)cm/s,舒张期末血流速度(EDV)分别为(159±22)、(68±16)、(68±14)、(66±17)cm/s,搏动指数分别为0.67±0.06、0.80±0.08、0.80±0.07、0.82±0.06,术后1、7 d和3个月PSV、EDV及搏动指数较术前改善(均P0.05),术后各时间点PSV、EDV及搏动指数两两比较,差异均无统计学意义(均P0.05)。结论初步分析显示,Solitaire应用于治疗血管路径迂曲及狭窄病变复杂的大脑中动脉狭窄未发现手术相关并发症,近期疗效确切,但尚有待进一步验证。

Efficacy and hemodynamic analysis of complex symptomatic middle cerebral artery stenosis after Solitaire stent implantation

Objective To analyze the efficacy and hemodynamic changes in patients with complex symptomatic middle cerebral artery stenosis after Solitaire AB stent implantation.Methods From June 2013 to June 2016,7 consecutive patients with complex symptomatic middle cerebral artery stenosis treated with Solitaire stents at the Department of Neurology,the Third People's Hospital of Hubei Province were enrolled retrospectively.The stenosis rate ≥70% was confirmed by digital subtraction angiography (DSA).Of the 7 patients,5 were male and 2 were female,with an average age of 70±8 years.The general data of the patients were documented,including clinical symptoms,modified Rankin scale(mRS)score,stenosis degree,vascular pathways LMA classification and Mori typing for stenosis,and postoperative residual stenosis or restenosis.The hemodynamic parameters at day 1,7,and 3 months before and after procedure were compared.Results All patients were successfully implanted with the Solitaire AB stents.(1) Of the 7 patients,the Mori type A of stenosis lesions was in 4 cases,B in 2 cases,and C in 1 case.The LMA typing of vascular approaches were Type Ⅲ in 3 cases,type Ⅱ in 4 cases.The preoperative stenosis rate was 80±7%,the residual stenosis rate was 24±13%,and there were no operation-related complications.No ischemic events occurred during the follow-up period.(2) Before stent implantation and at 1 d,7 d,and 3 months after procedure,the peak systolic velocity (PSV) were 297±41,144±34,145±27,and 143±40 cm/s,respectively,the end diastolic velocity (EDV) were 159±22,68±16,68±14,and 66±17 cm/s,respectively,and the pulse index (PI) were 0.67±0.06,0.80±0.08,0.80±0.07,and 0.82±0.06,respectively.PSV,EDV,and PI at 1 d,7 d,and 3 months were improved compared with before procedure (all P<0.05),There were no significant differences at all time points in the pairwise comparison PSV and EDV and PI at all time points after the procedure (all P>0.05).Conclusions Initial analysis showed that no procedure-related complications were observed in the treatment of vascular tortuosity and complex middle cerebral artery stenosis with the Solitaire stents.The short-term curative effect is exact;However,it still needs to be validated further.