【摘要】 目的　了解正常人左室收缩扭转与舒张功能的关系。方法　应用二维超声测量４５ 例正常人左室收缩期扭转角度，并用脉冲多普勒测量二尖瓣口血流频谱和Ｍ 型彩色多普勒测量左室内舒张早期血流传播速度。结果　正常人左室收缩期扭转平均角度为１１－６°±３－５°。其扭转角度与二尖瓣血流频谱的Ｅ 峰加速度呈正相关（ｒ ＝ ０－９７ ，Ｐ＜０－０１） ，而与Ｅ 峰加速时间呈负相关（ｒ＝ － ０－９３，Ｐ＜ ０－０１） 。结果还显示正常人左室收缩期扭转角度与左室内舒张早期血流传播速度也有良好的相关性（ｒ＝ ０－９１ ，Ｐ＜ ０－０１）。结论　正常人左室收缩期扭转角度的大小可以反映左室舒张功能的变化。更多还原

【Abstract】 s Objective We investigate the relationship between the ventricular systolic twist and the diastolic function in normal humans.Methods We measured left ventricular (LV) end-systolic twist with transthoracic echocardiography in 45 normal volunteers. LV filling was assessed by analysis of transmitral pulsed-wave Doppler flow velocities. The velocity of LV filling flow propagation were measured as the slope of the flow wave front of M-mode color Doppler. Results The mean end-systolic twist degree was 11 6°±3 5°. The magnitude of LV twist was significantly correlated positively with acceleration of the mitral E-wave ( r =0 97, P <0 01), and negatively with the mitral E-wave time ( r =-0 93, P <0 01). The good correlation was also obtained between the mean end-systolic twist degree and the velocity of LV filling flow propagation ( r =0 91, P <0 01).Conclusions The magnitude of LV end- systolic twist may be correlate with changes of LV diastolic function.更多还原