关键词: 颈动脉疾病; 动脉粥样硬化; 支架成形术; 自膨式闭环支架; 后扩张技术

Abstract: Objective To assess the efficacy and safety of carotid artery stenting(CAS) with closed-cell self-expanding stents and postdilatation for calcified carotid atherosclerotic lesions.Methods Between April 21 and November 17, 2011, CAS by using combined closed-cell self-expanding stents and postdilatation was performed in 4 patients with carotid artery atherosclerosis accompanied by plaque calcification. The stenosis degree of the responsible carotid arteries in the 4 patients ranged from 90% to 99% before CAS. The angiographic outcomes immediately after CAS, and the intra- and postoperative neurological symptoms and circulation status were recorded. Short-term follow-up was conducted.Results There were no shedding plaques in the embolic protective device in all 4 cases. CAS was successful in all 4 patients, with residual stenosis ranging from 10% to 20%. No patient developed a neurological deficit during the perioperative period of CAS. The hemodynamic status during the procedure was stable in all 4 cases. During the short-term follow-up, no patient experienced stroke or in-stent restenosis.Conclusion CAS with closed-cell self-expanding stents and postdilatation is an effective and safe alternative treatment in severely calcified carotid atherosclerosis.

Key words: Carotid artery diseases; Atherosclerosis; Angioplasty and stenting; Closed-cell self-expanding stent; Postdilatation