鉴别先天性喉蹼与先天性喉喘鸣的要点是() ["A．呼吸困难的程度","B．有无声嘶","C．是否出生后应出现症状","D．是否需要治疗","E．吞咽困难"]
致先天性喉喘鸣的病因为() ["A．环状软骨先天性增生","B．喉软骨软化","C．喉蹼形成","D．会厌裂","E．先天性喉软骨畸形"]
新生儿硬肿症的临床表现有() ["A．反应差，哭声低微","B．体温不升","C．皮下脂肪积聚部位硬肿","D．常合并肺炎，败血症","E．心音低钝"]
声音嘶哑
laryngeal siridor
咯血与呕血的鉴别要点是什么？
