穆玉明,陈晓峰,吐尔逊娜依·阿迪,唐琪,王春梅

• 1:新疆医科大学第一附属医院心脏超声诊断科
• 2:新疆医科大学第一附属医院心脏超声诊断科
• 3:新疆医科大学第一附属医院心脏超声诊断科
• 4:新疆医科大学第一附属医院心脏超声诊断科

摘要(Abstract)：

目的:应用超声组织速度显像(TVI)技术研究左室局部心肌缺血时左室压力变化对左房功能的影响。方法:11只犬行左冠状动脉前降支结扎,制作左室前壁心肌缺血模型。应用TVI技术测量缺血前后心房各壁的收缩期峰值速度(Vs)、舒张早期峰值速度(Ve)及二尖瓣口血流频谱E/A、肺静脉血流频谱S峰和D峰值,同时导管记录缺血前后左室压力曲线。结果:心肌缺血后左房各壁Vs和Ve均增高(P<0.001),左室舒张末期压力(LV-EDP)增高,且其缺血前后变化率(LVEDP%)分别与左房前壁、侧壁和下壁的Ve变化率(Ve%)呈正相关(r=0.72、0.73、0.83,P=0.05、0.05、0.002)。结论:左房功能在局部心肌缺血时会受到增高的LVEDP的影响,表现为左房壁心肌纤维的运动能力随之增加。

关键词(KeyWords)： 组织速度显像;左室压力;左房功能

Abstract:

Keywords:

基金项目(Foundation): 新疆维吾尔自治区自然科学基金项目(项目编号:200421101)

作者(Author): 穆玉明,陈晓峰,吐尔逊娜依·阿迪,唐琪,王春梅

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