De la Cruz A, Linthicum F H, Luxford W M
Laryngoscope. 1985 Apr;95(4):421-7.
Children with congenital atresia of the external auditory canal require an early assessment of hearing and a determination of the degree of atresia and associated pathology by polytomography and/or high-resolution CT scanning. We analyzed the otologic findings in 302 ears (239 patients) with severe atresia of the external auditory canal. Eighty-seven primary or revision surgeries were performed. Fifty-three percent obtained a residual conductive deficit of 20 dB or less. Lateralization of the tympanic membrane graft was the primary cause of failure in obtaining good hearing results. The use of split-thickness skin graft instead of a full-thickness skin graft to cover the reconstructed external canal has decreased the incidence of restenosis and revision surgery.
先天性外耳道闭锁患儿需要通过体层摄影术和/或高分辨率CT扫描对听力进行早期评估，并确定闭锁程度及相关病变情况。我们分析了302只耳（239例患者）重度外耳道闭锁的耳科检查结果。共进行了87例初次手术或翻修手术。53%的患者术后残余传导性听力损失在20分贝或更低。鼓膜移植物侧移是听力改善不佳的主要失败原因。使用中厚皮片而非全厚皮片覆盖重建的外耳道，降低了再狭窄和翻修手术的发生率。
