1·Because of the fall in systemic vascular resistance, valvular regurgitation has been regarded as relatively harmless for the mother.
由于全身血管阻力下降，瓣膜反流一直被认为对母体相对无害。
2·Mild mitral regurgitation.
二尖瓣轻度反流。
3·Objective to evaluate left ventricular systolic function based on mitral regurgitation during systole.
目的探讨根据收缩期二尖瓣反流评价左室收缩功能的价值。
4·Objective:Ampulla being obstructed can cause cholestasis and pancreatic juice regurgitation.
目的：胰胆管壶腹梗阻可引起胆汁淤积及胰液反流。
5·Objective To evaluate the prognostic significance of mitral regurgitation (MR) detected by echocardiography in patients with acute myocardial infarction (AMI).
目的探讨二尖瓣反流（MR）对急性心肌梗死（AMI）患者预后的意义。