题目内容
以下哪项征象可反映肺动脉高压( )
2021-10-14
A.肺动脉血流速度增快
B.肺动脉排血时间延长
C.肺动脉辦M型超声曲线上a波消失
D.肺动脉瓣M型超声曲线上a波加深
E.肺动脉内径变细
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