2D-STI评价冠状动脉左前降支供血区心肌纵向应变

来源期刊：广州医药 | 65-67 发布时间：2021-12-02 收稿时间：2025/11/13 16:58:29 阅读量：11

作者：: 杨毓雯,

柳建华,

李沿江,

魏宜霖,

宁兰兰,

关键词：: 二维斑点追踪技术缺血心肌纵向应变; Two Dimensional Speckle Tracking Image Ischemia myocardium Longitudinal strain

DOI：: 10.3969/j.issn.1000-8535.2016.04.021

收稿时间：: 2016-04-22
修订日期：
接收日期：
引用总数：: 0

目的采用二维斑点追踪技术(2D-STI)检测冠状动脉左前降支供血区心肌纵向应变,探讨其评估缺血心肌局部收缩功能的价值。方法使用2D-STI检测不同狭窄程度(＜50%、50%~75%、＞75%)及未见明确狭窄的左前降支供血区心肌纵向应变参数:心内膜下、心外膜下及区域心肌收缩期纵向应变峰值-LS-endo、LS-epi、LS-Territorial,计算收缩期心肌跨壁纵向应变(LS-mural)。观察PCI术后供血区心肌纵向应变的变化。结果各组内LS-endo均高于对应的LS-epi(均P<0.01)。随着左前降支狭窄程度增加,LS-endo、LS-epi、LS-Territorial、LS-mural逐渐减低(均P<0.01)。术后LS-endo、LS-epi、LS-Territorial逐渐增高,LS-mural先增高后缓慢减低再增高。结论 2D-STI可定量检测不同层次的心肌纵向应变,反映心肌局部收缩功能,为早期识别缺血心肌、评价PCI术后疗效提供参考依据。

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