Dunham M E, Friedman H I
Department of Surgery (Otolaryngology), University of South Carolina School of Medicine, Charleston.
Cleft Palate J. 1990 Oct;27(4):369-73. doi: 10.1597/1545-1569(1990)027<0369:amobea>2.3.co;2.
The hearing impairment associated with congenital external auditory canal atresia has been managed with early bone conduction hearing aid placement and surgical reconstruction in selected patients. However, many patients do not wear a bone conduction hearing aid because of physical or social considerations and surgical reconstruction of the external auditory canal and middle ear may be difficult or contraindicated. This report details the use of implantable bone conducting hearing devices in five children with bilateral external auditory canal atresia. Each patient had bilateral conductive hearing impairment with normal bone conduction thresholds. Four of the five patients had associated craniofacial anomalies including three cases of microtia. The average preoperative sound field speech reception threshold improved from 63 dB to 13 dB with the implant. Patients experienced a definite preference for the implanted hearing device over the bone conduction hearing aid.
与先天性外耳道闭锁相关的听力障碍，已通过在选定患者中早期植入骨传导助听器和进行手术重建来处理。然而，由于身体或社会方面的考虑，许多患者不佩戴骨传导助听器，而且外耳道和中耳的手术重建可能困难或存在禁忌。本报告详细介绍了可植入式骨传导听力装置在五名双侧外耳道闭锁儿童中的应用。每名患者均有双侧传导性听力障碍，骨传导阈值正常。五名患者中有四名伴有颅面畸形，其中三例为小耳畸形。植入后，五名患者术前平均声场言语接受阈值从63分贝提高到了13分贝。患者明确表示更喜欢植入式听力装置而非骨传导助听器。
