论文部分内容阅读
目的 :采用组织多谱勒成像 (TDI)、彩色室壁运动分析 (CK)及声学密度测定 (AD)评价心梗患者非梗塞区心肌功能的改变。材料和方法 :前壁心梗患者合并心衰组 2 0例 ,无心衰组 3 6例 ,对照组 2 3例 ;应用TDI、CK、AD技术分别测定后间隔基底部收缩期Sa波 ,舒张早期Ea波 ,晚期Aa波 ,全收缩期位移幅度和速度 (CKd、CKv) ,及标化的背向散射积分(IBS)及其周期变化率 (CVIB)。结果 :与对照组相比 ,非心衰组CKd、CKv、Ea、CVIB减低 ,而心衰组CKd、CKv、Sa、Ea、Aa、CVIB均明显减低 ,IBS增高 (P <0 .0 5 ) ,其中CKd、CKv、CVIB与左室整体收缩功能 (LVEF)有较好的相关性 ,CVIB与CKd、CKv及Ea呈正相关 (P <0 .0 1)。结论 :TDI、CK、AD可反映非梗塞区心肌功能随LVEF的不同而出现不同程度的改变。
OBJECTIVE: To evaluate the changes of cardiac function in noninfarction myocardial infarction patients by using tissue Doppler imaging (TDI), color wall motion analysis (CK) and acoustic densitometry (AD). MATERIALS AND METHODS: 20 patients with anterior myocardial infarction complicated by heart failure, 36 patients without heart failure, and 23 patients in control group were treated with TDI, CK and AD respectively. Early Ea wave, late Aa wave, full systolic displacement amplitude and velocity (CKd, CKv), and normalized backscatter integral (IBS) and its rate of change of period (CVIB). Results: Compared with the control group, CKd, CKv, Ea and CVIB in non-heart failure group decreased, but the CKd, CKv, Sa, Ea, Aa and CVIB in heart failure group were significantly decreased and IBS increased (P < , CKd, CKv and CVIB had a good correlation with left ventricular total systolic function (LVEF), and CVIB had positive correlation with CKd, CKv and Ea (P <0.01). Conclusion: TDI, CK and AD can reflect the changes of myocardial function in non-infarction area with different degrees of LVEF.