左心室旋转运动与收缩功能相关性的临床研究

Clinical study of correlation between left ventricular torsion motion and left ventricular systolic function

目的 分析左心室乳头肌水平旋转角度与左室射血分数(LVEF)、左室短轴缩短率(LVFS)、MAM 位移的相关性,探讨其在左室功能评价中的临床价值。方法 研究对象89例,其中左室收缩功能减退(LVEF <50%)39例,左室收缩正常(LVEF >50%)50例。M 型超声心动图测量左室短轴缩短率(LVFS)、MAM 位移;Simpson's 法测量左室射血分数(LVEF);二维灰阶超声心动图测量左室乳头肌水平旋转角度。结果 89例研究对象心脏收缩时旋转角度为2.0°～13.4°,平均旋转角度7.73°±3.76°;左室收缩功能减退组较左室收缩正常组LVEF、LVFS、MAM 位移、左室乳头肌水平旋转角度显著减小(P＜0.01);左室乳头肌水平旋转角度与LVEF、LVFS、MAM 位移显著正相关(P＜0.01)。结论 左室乳头肌水平旋转角度可作为评价左室整体收缩功能的一项指标。

Objective To analyze the correlation between the torsion angle of left ventricular and LVEF、LVFS、MAM displacement,and probe the clinical value to evaluate left ventricular fiinction.Methods89 cases,including 50 patients with LVEF >50%and 39 patients with LVEF<50%,were selected in the study.FS and mitral MAM displacement were measured by M —mode echocardiography,LVEF was measured by Simpson's,the torsion angle of left ventricular was measured by two-dimensional gray—scale echocardiography.Results All the torsion angles was between 2.0 degree and 13.4 degree,the mean torsion angle was 7.73±3.76degree.LVEF、FS、MAM displacement and the torsion angle of left ventricular were obviously lower in group with LVEF<50%than that in normal contrast group(P<0.01).The torsion angle of left ventricular was correlated with LVEF、FS、MAM displacement significandy(P<0.01).Conclusion The torsion angle of left ventricular can be used to evaluate left ventricular general systolic fiinction.