题目内容
诊断阻塞性肺气肿，最有价值的是
2021-10-26
A.PaO2低于正常
B.残气量/肺总量大于40%
C.第一秒用力呼气量占用力肺活量小于60%
D.最大通气量低于预计值的80%
E.潮气量低于预计值的80%
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