问题
不定项选择
慢性支气管炎并发阻塞性肺气肿时，下列哪种病理生理变化是正确的（）
A.只有当细支气管完全阻塞时，才会出现气道阻力增加，形成阻塞性通气功能障碍
B.残气量占肺总量百分比增加，但残气量绝对值不增加
C.无肺泡壁血流灌注异常，所以无生理无效腔增大
D.伴有换气障碍E、可引起二氧化碳潴留，不引起低氧血症
答案
参考答案：D
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慢性支气管炎并发阻塞性肺气肿时，下列哪种病理生理变化是正确的（）
A.只有当细支气管完全阻塞时，才会出现气道阻力增加，形成阻塞性通气功能障碍
B.残气量占肺总量百分比增加，但残气量绝对值不增加
C.无肺泡壁血流灌注异常，所以无生理无效腔增大
D.伴有换气障碍E、可引起二氧化碳潴留，不引起低氧血症
参考答案：D
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