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目的应用三维超声斑点追踪成像(3DE-STI)评价不同程度冠状动脉病变患者左室收缩功能。方法常规二维超声心动图检查未发现室壁运动异常的冠心病者40例,健康志愿者27例作为对照组。测量左室整体纵向应变、径向应变、圆周应变、面积应变及其他常规参数,比较各组间测量参数的差异。结果与对照组及单支病变有侧支循环组比较,在单支病变无侧支循环组的整体纵向应变值降低(P<0.05)。多支病变组的整体纵向、径向、圆周及面积应变值均降低(P<0.05)。结论 3DE-STI能显示常规二维超声心动图未发现室壁运动异常患者的心室应变值降低,它将有助于判断冠心病患者的冠状动脉病变程度。
Objective To evaluate the left ventricular systolic function in patients with coronary artery disease by three-dimensional echocardiography (3DE-STI). Methods Forty coronary heart disease patients without abnormal motion of the wall and 27 healthy volunteers as the control group were examined by conventional two-dimensional echocardiography. The longitudinal strain, radial strain, circumferential strain, area strain and other conventional parameters of left ventricle were measured, and the differences of measurement parameters were compared. Results Compared with the collateral circulation group in the control group and the single vessel lesion, the overall longitudinal strain of the unilateral collateral circulation group in the single vessel lesion decreased (P <0.05). The overall longitudinal, radial, circumferential and area strain values of multi-vessel disease group were decreased (P <0.05). Conclusion 3DE-STI can show the decrease of ventricular strain in patients with abnormal ventricular wall motion in conventional two-dimensional echocardiography. It will be helpful to determine the extent of coronary lesion in patients with coronary heart disease.