Along with the BMI heighten,the blood stream mediated arteria brachialis inside diameter change percentage(EDD) was reduced obviously,but it was not significance difference in each group(P>0.05).

• 随着BMI的增高；患者血流介导的肱动脉内径变化的百分率(EDD)均明显降低；但各组间无显著性差异(P均>0.；05);