TCT 2014:生物可降解支架并没有出现支架内血栓形成减少

2014-09-23 傅向华 魏立业 医学论坛网

2014TCT会议公布的数据显示,应用生物可降解聚合物涂层biolimus药物洗脱支架(BES)和应用不可降解依维莫司药物涂层洗脱支架(EES)的患者中支架血栓的发生率在一年内是相似的。 来自荷兰鹿特丹Maasstad医院的PIETER C. Smits博士及其同事们汇集了COMPAREⅡ和NEXT试验的所有5942名患者,来比较BES(Nobori,泰尔茂医疗公司)与EES(Xienc

2014TCT会议公布的数据显示,应用生物可降解聚合物涂层biolimus药物洗脱支架(BES)和应用不可降解依维莫司药物涂层洗脱支架(EES)的患者中支架血栓的发生率在一年内是相似的。

来自荷兰鹿特丹Maasstad医院的PIETER C. Smits博士及其同事们汇集了COMPAREⅡ和NEXT试验的所有5942名患者,来比较BES(Nobori,泰尔茂医疗公司)与EES(Xience,雅培,波士顿)支架血栓的发生率。

BES与EES的临床结果比较

无论是总体发生率还是早期或晚期发生率,BES组和EES组的诊断明确的支架血栓发生率在1年内均相似,两组支架血栓的确诊/疑似比率也无差异。

此外,应用BES与EES治疗患者的临床结果(包括死亡率、心梗、靶病变或靶血管血运重建)也相同。

“一个汇集了多区域和临床实践的大样本研究表明,两种支架在1年内表现出了相同的安全性和有效性”,Smits说。他又补充说,多变量分析显示,应用BES与EES比较两组支架血栓无论是确诊率(OR2.52;95%CI 0.92-6.89;P=0.07)还是确诊/疑似比率(OR1.25;95%CI 0.57-2.72;P=0.58)均无差异。

Smits表示,与不可降解EES相比,应用生物可降解聚合物涂层BES带来的获益仍然是不清楚的。为证明生物可降解聚合物涂层BES在临床实践中的潜在获益,有必要进行一项长期随访研究。

COMPAREⅡ和NEXT试验

COMPAREⅡ和NEXT试验都是用来评价比较BES与EES的安全性和有效性的非盲、随机对照的研究。Smits表示“尽管实验表明两种支架得到了相似的结果,但是它们没有明确强调低频事件的差别,例如支架血栓”。

Smits也注意到了一些试验的局限性。例如,COMPAREⅡ试验仅仅纳入了26%的行PCI的潜在参与者,因此不能排除存在选择偏畸。COMPAREⅡ和NEXT试验由于使用低事件率估算的样本量也是不足的。另外,两个实验设计均为12个月的非劣性研究,资料的进一步分析应该是“事后多重比较”。


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    2016-02-27 lyh994

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