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目的应用二维超声斑点追踪成像技术(STI)评价冠状动脉单支病变左室心肌旋转运动的变化。方法选择冠状动脉单支病变患者70例及健康志愿者30例,测量左室短轴基底水平和心尖水平心肌旋转角度指标。结果单纯前降支病变者心尖水平旋转角度减低,单纯右冠状动脉病变者基底水平旋转角度减低。结论冠状动脉单支病变引起左室局部心肌旋转角度减低;STI技术能够定量准确评价冠状动脉单支病变患者左室心肌的旋转运动。
Objective To evaluate the changes of left ventricular rotational movement in patients with coronary artery disease by two-dimensional ultrasonography (STI). Methods 70 patients with coronary artery disease and 30 healthy volunteers were selected to measure left ventricular short axis and apical level myocardial rotation angle. Results In simple anterior descending coronary artery disease, the apical horizontal rotation angle was reduced, and the basement horizontal rotation angle was decreased in the right coronary artery lesion alone. Conclusions The single coronary artery lesion causes the left ventricular regional myocardial rotation angle to decrease. STI technique can quantitatively and accurately evaluate the left ventricular myocardial rotation in patients with single coronary artery disease.