改进的解剖M型超声检测Ⅱ型糖尿病患者心肌径向应变率的研究

目的验证改进的解剖M型超声(IAMM)测量左心室短轴心肌径向应变率的可行性。方法选取正常人26例(正常组),Ⅱ型糖尿病患者27例(糖尿病组),分别利用IAMM与斑点追踪成像技术(STI)测量上述研究对象左心室短轴乳头肌平面6个节段的径向应变率,并且评价糖尿病患者的左心室短轴心功能。结果 IAMM与STI测量左心室短轴径向应变率时的相关性和一致性较好,左心室短轴乳头肌平面多数节段的舒张期径向应变率糖尿病组(1.61±0.73、1.62±0.75、1.68±0.80、1.69±0.83、1.81±0.75)均低于正常组(2.07±0.83、2.05±0.60、2.20±0.61、2.36±0.77、2.55±1.14),差异有统计学意义(P<0.05)。结论改进的解剖M型超声心动图可以用于评价左心室短轴径向应变率,糖尿病左心室短轴心功能的早期改变以舒张功能减退为主。

Measurement assessment of myocardial radial strain rate in patients with type 2 diabetes mellitus by improved anatomic M-mode echocardiography

Objective To evaluate the feasibility of measuring minor-axis radial strain rate of left ventricular (LV) by improved anatomic M-mode echocardiography (IAMM). Methods Twenty-six healthy volunteers (HV group) and twenty-seven patients (DM group) with type 2 diabetes mellitus were enrolled in this study. The radial strain rates of 6 segments at LV minor-axis papillary muscle level were measured by IAMM and speckle tracking imaging (STI) technology,respectively,in the two groups,and the rates were also used to...