人工二尖瓣置换者左房室平面的沿心脏长轴运动

本研究将人体心脏内标志物为观察对象,了解左房室平面沿心脏长轴的运动。采用二维超声、多普勒超声等方法,观察45例人工二尖瓣置换病人的二尖瓣后缘的长轴运动特征。结果见人工二尖瓣长轴运动超声参数与左室收缩功能指标相关良好,证实以人工二尖瓣金属环后缘为标志的左房室平面存在确切的沿心脏长轴方向运动。并且获得以人工瓣环为标志物的左房室平面在超声心动图和低频多普勒超声上的长轴运动数据,认为左房室瓣环心脏长轴运动在维持左室收缩功能中具有重要的作用。

Movement of Left Atrial Ventricular Plane in Cardiac Long-axis Direction in Patients with Mitral Valve Replacement

IN order to evaluate movement of left atrial ventricular plane (AVP) in cardiac long-axis , the mark inside the human heart was used as objective in the present study. 45 cases with mitral valve replacement (MVR) were selected and the parameters of movement of long-axis on echocardio-graphy were recorded. The results showed that there was good relationship beteewn parameters of posterior margin on mitral valvular ring in patients with MVR and those of left ventricular systolic function. The movement of left AVP along long-axis which was marked by artificial metal ring was confirmed and data in long-axis direction were obtained in echocardiography. In conclusion,the motion in long-axis direction is important in maitain left ventricular function.