目的探讨异常PR间期对舒张期和收缩期二尖瓣返流的影响及对左心室充盈的影响。

Objective To study the influence of abnormal PR interval on mitral regurgitation and left ventricular filling.

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目的探讨异常PR间期对舒张期和收缩期二尖瓣返流的影响及对左心室充盈的影响。

Objective To study the influence of abnormal PR interval on mitral regurgitation and left ventricular filling.

youdao