超声斑点追踪二维纵向应变评价心绞痛患者冠状动脉介入治疗术前后左心室心肌收缩功能  

Assessment of left ventricular myocardial function before and after percutaneous coronary intervention in patients with angina pectoris using two-dimensional longitudinal strain echocardiography

作　　者：黄冬梅[1] 夏稻子[1] 张宇虹[1] 礼广森[1] 崔洪岩[1] 

机构地区：[1]大连医科大学附属二院超声科,大连116027

出　　处：《中华医学超声杂志（电子版）》2011年第2期42-44,共3页Chinese Journal of Medical Ultrasound(Electronic Edition)

摘　　要：目的应用超声二维纵向应变探讨心绞痛患者冠状动脉介入治疗术(PCI)前后左心室心肌收缩功能改变情况。方法 32例心绞痛(左前降支病变)患者和30例正常人(对照组),分别记录PCI术前、术后3个月和正常人心尖四腔切面,二腔切面,左心室长轴高帧频图像,应用二维应变软件测量各个节段的收缩期峰值纵向应变值。结果 PCI术前患者(术前组)与对照组比较,心肌节段的纵向应变值减低(P<0.05),且与冠状动脉造影左前降支病变分布范围相一致;与PCI术前相比,术后3个月患者(术后组)相应节段心肌收缩期纵向应变值较前改善(P<0.05),且部分节段与对照组比较差异无统计学意义(P>0.05)。结论超声斑点追踪二维纵向应变不但能定位诊断节段性室壁运动异常,而且能够定量地评价心绞痛患者PCI术后左心室心肌收缩功能改善情况。Objective To explore the characteristics of two-dimensional strain of left ventricular myocardial function before and after percutaneous coronary intervention（PCI） in the patients with angina pectoris （AP） by speckle tracking echocardiography. Methods A total of 32 patients with AP and 30 healthy volunteers were involved. High frame rate two-dimensional images were recorded from the apical four-chamber view,two-chamber view and long-axis view of the left ventricle,respectively. The peak systolic longitudinal strain was measured in all of these views using two-dimensional strain software. Results Compared to the control group,the left ventricular peak systolic longitudinal strain values in part of segments were lower in patients with AP before and after PCI （P0.05）. Left ventricular peak systolic longitudinal strain values in part of segments were significantly improved at 3 month after PCI compared to those patients before PCI （P0.05）. Conclusions Two-dimensional strain echocardiography can be used to precisely quantify regional myocardial function in patients with AP after PCI.

关 键 词：超声心动描记术 心室功能 冠状动脉介入治疗术 

分 类 号：R541.4[医药卫生—心血管疾病]