药物洗脱支架与金属裸支架在急性ST段抬高心肌梗死急诊介入治疗中应用长期随访结果的比较

目的 探讨与金属裸支架(BMS)相比,Cypher支架(Cordis公司,美国)在急性ST段抬高心肌梗死(STEMI)急诊经皮冠状动脉介入治疗(PCI)中应用的安全性和长期有效性.方法 连续选择2002年12月至2005年3月间STEMI患者407例,均于发病12 h内行急诊PCI治疗,于梗死相关血管靶病变置入Cypher支架或BMS.对所有病例随访1.5～4.0年(平均28.7±11.7个月),比较两类支架院内及出院后严重心脏不良事件(MACE,包括死亡、再发心肌梗死、靶病变重建等)发生的差异.结果 407例患者中置入Cypher支架者131例,置入BMS者276例.Cypher支架组所置入支架的直径明显小于BMS组(3.0 mm与3.2 mm,P=0.00).两组在随访期间心因性死亡(1.5%与6.9%,P=0.02)以及随访期间总的主要不良心脏事件(MACE)(6.1%与12.7%,P=0.04)差异均有统计学意义.应用Cox回归比例风险模型计算Cypher支架组在随访期间发生总MACE的相对危险度为0.45(P＜0.05).两组的支架内血栓形成发生率差异无统计学意义,支架内再狭窄发生率以及靶病变重建率差异亦无统计学意义,但Cypher支架较之BMS有明显降低的趋势.结论 在STEMI的急诊PCI治疗时,置入Cypher支架具有较好的安全性和长期有效性,与BMS相比可以降低远期复合MACE以及心因性死亡的发生率. 2)以及随访期间总的主要不良心脏事件(MACE)(6.1%与12.7%,P=0.04)差异均有统计学意义.应用Cox回归比例风险模型计算Cypher支架组在随访期间发生总MACE的相对危险度为0.45(P＜0.05).两组的支架内血栓形成发生率差异无统计学意义,支架内再狭窄发生率以及靶病变重建率 异亦无统计学意义,但Cypher支架较之BMS有明显降低的趋势.结论 在STEMI的急诊PCI治疗时,置人Cypher支架具有较好的安全性和长期有效性,与BMS相比可以降低远期复合MACE以及心因性死亡的发生率. 2)以及随访期间总的主要不良心脏事件(MACE)(6.1%与12.7%,P=0.04)差异均有统计学意义.应用Cox回归比例风险模型计算Cypher支架组在随访期间发生总MACE的相对危险度为0.45(P＜0.

Long-term efficacy of sirolimus-eluring stents(Cypher)versus bare metal stents for patients with ST-segment elevation myocardial infarction

Objeetive To observe the safety and long-term efficacy of Cypher stent versus bare metal stents(BMS)in patients with STEMI.Methods From Dec 2002 to Mar 2005,clinical and angiographic data of 407 consecutive patients with STEMI treated with Cypher stent(n=131)or BMS(n=276)were analyzed and followed up for a mean period of 28.7±11.7 months.Major adverse cardiac events (MACE):death,nonfatal reinfaretion and target lesion revascularization(TLR)during follow up was compared between two groups.Results Compared with the BMS group,diameter of vessels were significanfly smaller(3.0mm vs.3.2mm,P=0.00),the incidence of MACE(6.1％vs.12.7％,P=0.04)and total mortality(1.5％vs.6.9％,P=0.02)were significantly lower in the Cypher group.The relative risk for MACE in Cypher group was 0.61(P＜0.05),while there was no significant difference in the rate of stent thrombosis,rate of target lesion revascularization and restenosis.Conclusion Utilization of Cypher in the setting of primary PCI for STEMI was safe and improved the long-term clinical outcomes compared to BMS.