In the direct coaptation group the radial nerve was cut at that level and sutured directly.

将桡神经前臂支于背阔肌止点下缘处切断再原位缝合，此组作为对照组。

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In left area the contour and size of the left ventricle and left atrium and the shape and coaptation of the mitral valve could be visualized.

左区能显示整个左室、左房的大小，二尖瓣的形态与对合情况，二尖瓣脱垂者可见叶瓣游离缘处某一区域向左房脱出。

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In left area the contour and size of the left ventricle and left atrium and the shape and coaptation of the mitral valve could be visualized.

左区能显示整个左室、左房的大小，二尖瓣的形态与对合情况，二尖瓣脱垂者可见叶瓣游离缘处某一区域向左房脱出。

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