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提问人:网友f******g 发布时间:2023年2月18日 09:47
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病历摘要:患者男性,62岁,因右下肺癌拟行右下肺叶切除术。身高1.67m,体重65kg,血压20/12kPa,心率64次/分。既往有慢性支气管炎,阻塞性肺气肿,有七年冠心病病史,二年前有心肌梗塞,近年无心绞痛发作。能进行正常生活与工作。心电图检查无异常。肝肾功能生化检查各项正常。关于通气/血流比值(V/Q)下述哪些是对的?()。

A.正常人全肺平均通气/血流比值为0.8-0.9 B.正常人坐位时的V/Q,肺上部低,下部高 C.V/Q增高时,表示生理短路增大 D.V/Q降低时,表示生理死腔增大 E.出血性休克,血压降低,肺栓塞等是肺泡死腔量增大的原因

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