单选题:根据下面内容,回答题 胡先生,30岁,儿童时曾患麻疹、肺炎,被诊断为支气管扩张症10余年,近1周来咳嗽、咳痰加重,痰呈脓 题目分类:专业实务 题目类型:单选题 查看权限:VIP 题目内容: 根据下面内容,回答题 胡先生,30岁,儿童时曾患麻疹、肺炎,被诊断为支气管扩张症10余年,近1周来咳嗽、咳痰加重,痰呈脓性,每日约500ml,伴低热。 胡先生所患支气管扩张症的基本发病因素是 A.全身免疫功能低下 B.支气管防御功能退化 C.支气管平滑肌痉挛 D.支气管感染和阻塞 E.支气管变态反应性炎症 参考答案: 答案解析:
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