Eldin Rasheed Nagm, Alamri Hussein, Almoghairi Abdulrahman
Riyadh Military Hospital, Prince Sultan Cardiac Centre (PSCC), Adult Cardiology Department, Riyadh, Saudi Arabia.
J Saudi Heart Assoc. 2011 Oct;23(4):249-51. doi: 10.1016/j.jsha.2011.05.006. Epub 2011 Jul 23.
A stent fracture is an emerging complication of the coronary stents. There are numerous risk factors for stent fractures; which include forceful exaggerated motion in the atrioventricular groove seen in right coronary artery, long stent, an ostial lesion at the point of maximum curvature in a tortuous vessel, stent over-expansion, stent overlapping with different size stents, complex lesion after stenting of a totally occluded vessel, Cypher stent and a highly mobile segment causing high mechanical stress. Furthermore, chronic stretch at specific vessel sites as bends may lead to late occurrence of fracture. Here we report a case of 40-year-old male who had two overlapping Cypher stents (3.0 × 13 mm and 2.75 × 18 mm) deployed at mid left anterior descending artery 2 years earlier presented with progressive chest pain.
支架断裂是冠状动脉支架出现的一种并发症。支架断裂有许多危险因素，包括右冠状动脉房室沟处的强力过度运动、长支架、迂曲血管最大曲率点处的开口病变、支架过度扩张、不同尺寸支架重叠、完全闭塞血管支架置入后的复杂病变、西罗莫司洗脱支架以及导致高机械应力的高度活动节段。此外，特定血管部位（如弯曲处）的慢性拉伸可能导致骨折的晚期发生。在此，我们报告一例40岁男性患者，其两年前在左前降支中段置入了两个重叠的西罗莫司洗脱支架（3.0×13毫米和2.75×18毫米），现出现进行性胸痛。
