NEJM:伊伐布雷定虽然可以减慢心率,但并不改善稳定性冠脉疾病的预后(SIGNIFY研究)

2014-09-27 MedSci译 MedSci原创

心率增加是心血管疾病的重要风险因素,已有大量研究。而先前研究表明,伊伐布雷定(Ivabradine )有利于降低心率,可改善患者的稳定性冠状动脉疾病,左心功能不全,能将心率控制在每分钟70次以下。但是还缺少大规模随机对照研究结果。 最新一项大规模多中心,随机对照研究(SIGNIFY研究)结果发表在新英格兰期刊上。该研究是一项多中心,随机,双盲,安慰剂对照,在标准的背景治疗中加入伊伐布雷定,研究共招

心率增加是心血管疾病的重要风险因素,已有大量研究。而先前研究表明,伊伐布雷定(Ivabradine )有利于降低心率,可改善患者的稳定性冠状动脉疾病左心功能不全能将心率控制在每分钟70次以下。但是还缺少大规模随机对照研究结果。

最新一项大规模多中心,随机对照研究(SIGNIFY研究)结果发表在新英格兰期刊上。

该研究
是一项多中心,随机双盲安慰剂对照,在标准的背景治疗中加入
伊伐布雷定,研究共招募19102稳定冠状动脉疾病,这些患者无临床心脏衰竭症状,心率每分钟70次以上,其中包括12,049活动限制性心绞痛随机分配患者接受安慰剂伊伐布雷定伊伐布雷定最高剂量为10毫克,每日两次随剂量的调整,以达到每分钟5560次的目标心脏速率主要终点心血管原因死亡或非致死性心肌梗死的复合终点

结果表明,
3个月时患者的平均率的
伊伐布雷定组为60.7±9.0次/分,安慰剂组为70.6±10.1次/分平均随访27.8个月,伊伐布雷定主要终点发生率与安慰剂组无显著差异6.8%和6.4,HR:1.08; 95%CI:0.96〜1.20,P=0.20)。单独分析,在心血管原因死亡和非致死性心肌梗死上,也无显著差异伊伐布雷定是与患者之间活动限制心绞痛的增加心动过缓的发生率较高伊伐布雷定比安慰剂组18.0%对2.3P <0.001)

结论:在无心衰的稳定
冠状动脉疾病患者中,
在标准背景疗法基础上,增加伊伐布雷定,虽然可以减慢心率,但并没有改善预后

原始出处:

Fox K, Ford I, Steg PG, Tardif JC, Tendera M, Ferrari R; SIGNIFY Investigators.Ivabradine in stable coronary artery disease without clinical heart failure.N Engl J Med. 2014 Sep 18;371(12):1091-9.、


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    2014-11-02 楚秀娟
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