目的：探讨风湿性二尖瓣狭窄患者左心房内自回声现象(SEC)与左心房血液流变学特点的关系。

Objective: the purpose of study was to observe the relationship be tween left atria hemorheological property and left atria spontaneous echo contrast (SEC) in rheumatic mitral stenosis.

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目的：探讨风湿性二尖瓣狭窄患者左心房血液流变学特点及与左心房自回声现象（SEC）的关系。

Objective:The purpose of this study was to observe the relationship between left atrial hemorheological property and spontaneous echo contrast(SEC) in rheumatic mitral stenosis.

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目的探讨应用多普勒组织成像（DTI）评价单纯性风湿性二尖瓣狭窄患者左室长轴收缩功能的意义。

Objective To evaluate Left ventricular long-axis systolic function in patients with rheumatic mitral stenosis by Doppler tissue imaging(DTI).

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