目的探讨保留瓣下结构对二尖瓣置换术后室壁运动的影响。

Objective To appraise the effects of regional wall motion of left ventricle after mitral valve replacement with or without preservation of subvalvular apparatus.

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前言： 目的：探讨保留瓣下结构二尖瓣置换术的护理配合。

Objective: To explore nursing for the patients with mitral valve replacement by chordal preservation.

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目的：评价保留二尖瓣全瓣下结构对双瓣替换者术后左心功能的影响。

Objective: To evaluate the effect of preservation of the entire mitral subvalvular apparatus during double valve replacement on left ventricular functions.

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