问题
单项选择题
主动脉瓣中度狭窄时瓣口面积为
A．2.1～4.0cm2
B．1.1～1.75cm2
C．<0.75cm2
D．1.76～2.0cm2
E．0.75～1.0cm2
答案
参考答案：E
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主动脉瓣中度狭窄时瓣口面积为
A．2.1～4.0cm2
B．1.1～1.75cm2
C．<0.75cm2
D．1.76～2.0cm2
E．0.75～1.0cm2
参考答案：E
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