JACC:替卡格雷可降低外周动脉疾病患者(曾患过心梗)的缺血性风险

2016-06-07 崔倩 译 MedSci原创

在之前有过心肌梗死(MI)的患者中,外周动脉疾病(PAD)与缺血性和出血风险增加有关。这项研究评估了在PAD和之前有过MI的患者中,替卡格雷治疗对于主要心血管(CV)事件和重大不良肢体事件的疗效性和安全性。PEGASUS-TIMI54研究随机分配21162例之前有过MI(1〜3年)的患者接受替卡格雷90毫克每天两次,替卡格雷60毫克,每天两次,或安慰剂,所有都以低剂量阿司匹林为背景。是否有PAD的

在之前有过心肌梗死(MI)的患者中,外周动脉疾病(PAD)与缺血性和出血风险增加有关。

这项研究评估了在PAD和之前有过MI的患者中,替卡格雷治疗对于主要心血管(CV)事件和重大不良肢体事件的疗效性和安全性。

PEGASUS-TIMI54研究随机分配21162例之前有过MI(1〜3年)的患者接受替卡格雷90毫克每天两次,替卡格雷60毫克,每天两次,或安慰剂,所有都以低剂量阿司匹林为背景。是否有PAD的历史在基线时进行调查。主要不良心血管事件(MACE)(定义为心血管死亡,心肌梗死或卒中)和主要不良肢体事件(MALE)(定义为急性肢体缺血或缺血周围血运重建)的发生率,分别记录在后续随访中。

总共有1143例(5%)患者有已知的PAD。在安慰剂组中,在3年时,PAD患者(n=404)比那些没有PAD的患者有较高的MACE率(n=6,663;19.3% vs 8.4%,P<0.001),调整基线差异后该现象仍然存在(调整危险比:1.60; 95%置信区间:1.20〜2.13; p=0.0013),还有较高的急性肢体缺血事件率(1.0% vs 0.1%)和周边血管重建术率(9.15% vs 0.46%。然而不管有无PAD,替卡格雷治疗时MACE相对危险降低是一致的,由于其较高的绝对风险PAD患者产生了较大的绝对风险降低,为4.1%(需要治疗数:25)。TIMI严重出血绝对过剩风险为0.12%(需受伤害人数:834)。60毫克的剂量对CV和全因死亡率产生了特别有利的结果。替卡格雷(汇集剂量)可减少MALE的风险(危险比:0.65; 95%置信区间:0.44〜0.95; P=0.026)。

在稳定的心肌梗死患者中,伴随有PAD会加剧缺血性风险。在这些患者中,替卡格雷减少MACE(较大的绝对风险降低)和MALE事件。

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    2017-02-13 hbwxf
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