甘油试验阳性提示引起耳聋的因素是() ["A.突发性耳聋","B.耳硬化","C.药物性聋","D.膜迷路积水","E.听神经瘤"]
窒间隔缺损和动脉导管未闭,x线表现有何不同?
甘油试验阳性是指() ["A.250~1000Hz气导听力改善≥5dB","B.250~1000Hz气导听力改善≥10dB","C.250~1000Hz气导听力改善≥15dB","D.250~1000Hz气导听力改善≥20dB","E.250~1000Hz气导听力改善≥25dB"]
皮肤粘膜淋巴结综合征的主要死因是() ["A.颅内出血","B.严重感染","C.脾破裂","D.心肌梗死或动脉瘤破裂","E.消化道大出血"]
简述镫骨性耳硬化的诊断及治疗原则。
房间隔缺损在X线上如何诊断?