找考题网-背景图
单项选择题

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%