[单选题]

WHO推荐的EF正常值是()

A . LVEF>50%,RVEF>40%

B . LVEF>40%,RVEF>50%

C . LVEF>55%,RVEF>55%

D . LVEF>45%,RVEF>45%

E . LVEF>50%,RVEF>50%

参考答案与解析:

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WHO推荐的EF正常值是()