摘要目的:探讨支架取栓治疗大脑中动脉远端分支闭塞的必要性、可行性、技术要点、手术相关并发症及预后。方法:回顾性分析2017年5月至2019年7月聊城市人民医院脑科医院应用Solitaire4-20支架取栓治疗的大脑中动脉远端分支（M2、M3）闭塞患者42例，其中男28例，女14例；年龄43~88岁，平均65.48岁。分析患者手术前、术后24 h及术后1周的美国国立卫生研究院卒中量表（NIHSS）评分、术中闭塞血管再通情况、手术相关并发症及术后3个月的恢复情况[3个月改良Rankin量表（mRS）评分]等。结果:42例患者手术成功再通38例，再通成功率90.48%。术后出血转化6例，血管痉挛17例。术后90 d的mRS评分为：0分13例，1分11例，2分6例，死亡0例。结论:大脑中动脉远端分支（M2、M3）闭塞的患者，在充分评估的基础上，采用Solitaire4-20支架进行取栓治疗是安全可行的，但应充分考虑患者的风险和获益。

abstractsObjective:To explore the necessity, feasibility, technical points, operative complications and prognosis of mechanical thrombectomy for distal branch occlusion of middle cerebral artery.Methods:Mechanical thrombectomy was performed on 42patients (28 males,14 females; age ranged from 43 to 88 years, mean 65.48years)with distal branch occlusion of middle cerebral artery (M2, M3), between May 2017 to July 2019. Theclinical feature was retrospectively analyzed. The NIHSS score before operation, 24 hours after operation and 1 week after operation, the recanalization of occluded vessels during operation, the complications and the recovery after 3 months (3 months mRS score) were analyzed.Results:Of the 42 patients, 38 patients were successfully recanalized, and the recanalization rate was 90.48%. Postoperative hemorrhage in 6 cases and vasospasm in 17 cases. At 90 days after operation, the mRS score was 0 in 13 cases, 1 in 11 cases, 2 in 6 cases, and 0 cases died.Conclusions:Mechanical thrombotomy is safe and feasible for patients with distal branch occlusion of middle cerebral artery (M2, M3). However, the risks and benefits of patients should be fully considered.