Research of stent fracture in revascularization for symptomatic ostial vertebral artery stenosis

SUN Xuan; MO Da-peng; MIU Zhong-rong; MA Ning; GAO Feng; XU Xiao-tong; GAO Kun; LIU Lian

Journal of China Clinic Medical Imaging ›› 2012, Vol. 23 ›› Issue (9) : 622-625.

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Research of stent fracture in revascularization for symptomatic ostial vertebral artery stenosis

SUN Xuan, MO Da-peng, MIU Zhong-rong, MA Ning, GAO Feng, XU Xiao-tong, GAO Kun, LIU Lian

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Abstract

Objective: To analyse the reasons of stent fracture in revascularization for symptomatic ostial vertebral artery stenosis. Methods:　A retrospective study was performed to evaluate 230 patients with symptomatic ostial vertebral artery stenosis who underwent PTAS. Restenosis was found in 10 patients by DSA, with 14 stents fractured totall. As a result, 8 patients suffered correlated symptoms. Results: Metallic characteristics, smaller internal diameter and longer length of stent, circuity of ostial vertebral artery stenosis, as well as repeated overexpansion are potentially contributed to stent fracture. Conclusion: Selecting suitable stents, avoiding repeated　overexpansion, controlling of hypertension and smoking cessation may decrease stent fracture and avoid vertebral artery restenosis after endovascular intervention.

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vertebrobasilar insufficiency / Angioplasty / balloon

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SUN Xuan;MO Da-peng;MIU Zhong-rong;MA Ning;GAO Feng;XU Xiao-tong;GAO Kun;LIU Lian. Research of stent fracture in revascularization for symptomatic ostial vertebral artery stenosis[J]. Journal of China Clinic Medical Imaging. 2012, 23(9): 622-625