JACC:乙酰胆碱诱发的冠状动脉痉挛可预测此类心绞痛不良预后

2015-09-01 崔倩 译 MedSci原创

冠状动脉痉挛有助于变异型心绞痛和缺血性心脏疾病的发病机制,并可能在动脉粥样硬化的进展中发挥作用。目前还不清楚痉挛的位置是否与结果相关。这项研究的目的是比较显著动脉粥样硬化狭窄位点有冠状动脉痉挛患者与在痉挛部位无狭窄或无明显狭窄患者的临床特点和预后。这是一项回顾性的,包括连续1877例具有典型或不典型心绞痛样胸痛接受乙酰胆碱刺激的观察性研究。总共有1,760例患者符合分析。分别有873和358例患者

冠状动脉痉挛有助于变异型心绞痛和缺血性心脏疾病的发病机制,并可能在动脉粥样硬化的进展中发挥作用。目前还不清楚痉挛的位置是否与结果相关。

这项研究的目的是比较显著动脉粥样硬化狭窄位点有冠状动脉痉挛患者与在痉挛部位无狭窄或无明显狭窄患者的临床特点和预后。

这是一项回顾性的,包括连续1877例具有典型或不典型心绞痛样胸痛接受乙酰胆碱刺激的观察性研究。总共有1,760例患者符合分析。分别有873和358例患者发生乙酰胆碱诱发的冠状动脉痉挛和显著器质性狭窄。

在显著动脉粥样硬化狭窄患者中,与非痉挛患者(n=125)相比,乙酰胆碱阳性的患者(n=233)较年轻和没有糖尿病。在无器质性狭窄患者中,与非痉挛患者(n=762)相比,乙酰胆碱阳性的患者(n=640)年龄较大,有血脂异常,而且更可能有缺血性心脏疾病的家族史。多因素Logistic回归分析显示,在心绞痛发作过程中,ST段抬高,左前降支的器质性狭窄,和多支血管痉挛作为显著器质性狭窄(n=192)的相关因素。多因素分析发现在显著狭窄位点乙酰胆碱诱发的痉挛和使用硝酸盐是主要不良心脏事件的2个预后因素。

乙酰胆碱诱发的冠状动脉痉挛的临床特点及预后是不同的,与其他部位痉挛的患者相比,它会发生在显著动脉粥样硬化狭窄的部位。显著器质性狭窄部位的痉挛和硝酸盐的使用是主要不良心脏事件的显著的预测因子。

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    2016-01-09 hbwxf
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    2015-09-03 apoenzyme
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    2015-09-03 grace5704

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