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目的探讨新型支架增强显影技术(StentBoost)诊断支架断裂的临床应用价值。方法回顾性分析我院冠状动脉介入治疗术后并行冠状动脉造影复查的患者资料,对可疑支架断裂患者分别行血管内超声(IVUS)及StentBoost来明确诊断。结果 7例患者出现支架断裂,5例(71.43%)发生在左前降支,其中Cypher支架占71.43%,支架平均直径(3.00±0.47)mm,平均长度(27.00±6.90)mm。发生断裂部位为双支架重叠处3例(42.86%),弯曲病变处3例(42.86%)。支架断裂导致支架内再狭窄5例(71.43%),支架内血栓形成3例(42.86%),瘤样扩张2例(28.57%)。7例患者均进行临床随访,平均随访时间2.8年,均未再发心绞痛,无主要心脏不良事件发生。结论StentBoost能清晰显示支架的骨架结构,可协助冠状动脉造影对支架断裂做出明确诊断并指导治疗。
Objective To investigate the clinical value of StentBoost in the diagnosis of stent fracture. Methods The data of patients undergoing coronary angiography after coronary intervention in our hospital were retrospectively analyzed. IVUS and StentBoost were used respectively to diagnose the suspicious stent fracture. Results Stent fractures occurred in 7 patients, and 5 cases (71.43%) occurred in the left anterior descending branch. Among them, Cypher stent accounted for 71.43%, mean stent diameter (3.00 ± 0.47) mm and average length (27.00 ± 6.90) mm. There were 3 cases (42.86%) with double stent overlap and 3 cases (42.86%) with flexural lesions. Stent rupture resulted in stent restenosis in 5 cases (71.43%), stent thrombosis in 3 cases (42.86%), tumor expansion in 2 cases (28.57%). All 7 patients were followed up for a mean of 2.8 years. No recurrence of angina was found and no major adverse cardiac events occurred. Conclusion StentBoost can clearly show the scaffold structure, can help coronary angiography to make a clear diagnosis of stent fracture and guide the treatment.