2D-STI评价舒张性心力衰竭病人左心室收缩功能  

ASSESSMENT OF LEFT VENTRICULAR SYSTOLIC FUNCTION IN PATIENTS WITH DIASTOLIC HEART FAILURE BY TWODIMENSIONAL SPECKLE TRACKING IMAGING

作　　者：范丽[1] 李勇[2] 李艳[2] 张芬[2] 

机构地区：[1]山东大学齐鲁医院青岛院区心血管内科,山东青岛266035 [2]青岛大学附属医院心脏超声科

出　　处：《齐鲁医学杂志》2015年第2期164-166,共3页Medical Journal of Qilu

摘　　要：目的应用二维斑点追踪成像技术评价舒张性心力衰竭（DHF）病人左心室长轴收缩功能,并探讨其临床应用意义。方法分别采集25例收缩性心力衰竭（SHF）病人、29例DHF病人、29例正常人的标准心尖四腔心切面、两腔心切面、心尖左室长轴切面的二维灰阶动态图像,用二维斑点追踪成像技术测量各心肌节段纵向收缩期峰值应变（LS）、左心室整体纵向收缩期峰值应变（GLPS-LAX、GLPS-A2C、GLPS-A4C）及左心室各节段平均纵向峰值应变（GLPS-AVG）。结果 SHF组、DHF组各节段LS均较正常组明显减小（F=7.07~217.96,q=2.87~29.11,P〈0.05）。SHF组、DHF组的GLPS-LAX、GLPS-A2C、GLPS-A4C与正常组比较均减低,差异有显著性（F=99.20~131.55,q=6.09~22.66,P〈0.05）。正常组、DHF组、SHF组GLPS-AVG逐渐减小,组间比较差异均有显著性（F=200.80,q=4.68~26.76,P〈0.05）。结论 DHF病人存在左心室长轴收缩功能异常,二维斑点追踪成像为DHF病人的左心室功能评价提供了一个新途径。Objective To evaluate left ventricular systolic function in patients with diastolic heart failure（DHF）by twodimensional speckle tracking imaging（2DSTI）and explore its clinical significance. Methods Two-dimensional images of stan-dard apical four-chamber view,two-chamber view and left ventricular apical long axis view were collected from 29 patients with systolic heart failure（SHF）,29 with DHF and 29 healthy subjects.The segmental myocardial longitudinal peak systolic strain（LS）,the global left ventricular longitudinal systolic peak strain（GLPS-LAX,GLPS-A2 C,GLPS-A4C）,and each segment ave-rage longitudinal LV peak strain（GLPS-AVG）were measured by 2D-STI. Results Compared with normal controls,LS in patients with SHF and DHF were reduced（F=7.07-217.96,q=2.87-29.11,P〈0.05）.Compared with normal group,GLPSLAX,GLPS-A2 C,GLPS-A4 Cin SHF group and DHF group reduced,the differences were significant（F=99.20-131.55,q=6.09-22.66,P〈0.05）.The GLPS-AVG gradually reduced in the normal controls,DHF group and SHF group（F=200.80,q=4.68-26.76,P〈0.05）. Conclusion Left ventricular long axis systolic dysfunction exists in patients with diastolic heart failure.Two-dimensional speckle tracking imaging provides a new approach in assessing left ventricular function in patients with this condition.

关 键 词：超声心动描记术 斑点追踪成像 心室功能 左 心力衰竭 舒张性 

分 类 号：R540.45[医药卫生—心血管疾病]