超重和肥胖者多普勒超声心动图左室功能分析

目的：研究超重和肥胖人群左室收缩、舒张功能的改变。方法：用多普勒超声心动图测定左室收缩功能参数、舒张功能参数，分析超重和肥胖人对左室收缩和舒张功能的影响。结果：左室收缩功能参数，肥胖组主动脉瓣最大血流速度、流速积分、平均血流加速度、每搏量及心排血量均较正常组显著增高（P＜0．01）。超重组每搏理、心排血量、主动脉瓣最大血流速度较正常组增高（P＜0．01）。左室舒张功能参数，肥胖组等容舒张时间，舒张早期快速充盈峰速度（E峰）、舒张晚期充盈峰速度（A峰）、A／E、舒张早期减速度均显著改变（P＜0．01）。超重组等容舒张时间、A峰、A／E显著改变（P＜0．01）。超重和肥胖组左室收缩功能增强和舒张功能受损与体重指数有显著相关性（P＜0．01）。结论：起重和肥胖可导致左室收缩增强和舒张功能下降，左室增大和左室充盈障碍。

Doppler Echocardiographic Study of Left Ventricular Function in Over Weight and Fatty

Objective To analyse systolic function of left ventricle and diastolic function in over weight and fatty group.Methods To measure systolic and diastolic function parameters of left ventricle by using Doppler echocardiography,and analyse the impact of over weight and fatty to the systolic and diastolic function of left ventricle.Results Systolic function parameters of left ventricle, TD, PV, MA, SV and CO in fatty group and SV, CO, PV in over weight group were significantly improved compared with those of control group. Diastolic function parameters of left ventricle, IVRT, E and A velocity, A/E, DC in fatty group and IVRT, A velocity, A/E in over weight group were remarkably changed contrasted to control group. Systolic function strengthening and diastolic function declining of left ventricle were observably associated with weight index.Conclusions Systolic function of left ventricle is reinforcing, and diastolic function declining by contrast in persons with fatty and over weight.