血管内支架成形术治疗椎动脉狭窄

目的 观察血管内支架成形术治疗椎动脉狭窄的短期疗效。方法 将球囊扩张性支架通过椎动脉狭窄部位，扩张球囊释放支架使狭窄部位恢复正常管径。结果 45例药物治疗无效的表现为后循环缺血症状的患者，43例成功的采用支架成形术，术前术后平均狭窄程度分别为75．7％和10．3％。临床随访35例症状完全缓解，4例明显好转，2例症状无改善。无一例发生内膜撕裂或血栓栓塞形成，短期随访未发现有再狭窄及内膜过度增生。结论 血管内支架成形术是治疗椎动脉狭窄的有效方法，长期疗效需进一步的随访观察。

Endovascular stenting for treatment of vertebral arterial stenosis

Objective To evaluate our short term results in endovascular treatment of symptomatic vertebral arteral stenosis with stents. Methods Balloon expanded stents were utilized to pass across the vertebral arterial stenosis, and then the balloons were inflated for the deployment of stents, outcoming with restoration of the stenosis to normal size. Results Forty five patients presented with posterior circulation ischemic symptoms and refractory to medical therapy were undertaken with endovascular stenting, showing technically successful in forty three of them. The mean degrees of preoperative and postoperative stenosis were 75.7% and 10.3%, respectively. Follow up data showed disappearence of clinical symptoms in 35 patients, chinical implovement and stabilization in 2. There were no intimal dissection and distal embolization. Short term follow up angiogram revealed no restenosis and intimal hyperplasia. Conclusions Endovascular stenting may be a favorable alternative for the treatment of vertebral arterial stenosis, but long term follow up is necessary.