问答题

慢阻肺所致呼吸衰竭产生严重低氧血症的最重要的机制是( )
A．阻塞性通气障碍 B．弥散障碍
C．解剖分流增加 D．通气-血流失调
E．限制性通气障碍

A.阻塞性通气障碍
B.弥散障碍

C.解剖分流增加
D.通气-血流失调

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