Penrod J P
Ear Hear. 1981 Mar-Apr;2(2):88-9. doi: 10.1097/00003446-198103000-00006.
The effects of collapse of the external ear canals due to pressure from earphones have been documented and discussed by several authors during the past 2 decades. This report presents a case of ear canal collapse in a child and demonstrates the value of impedance audiometry in cases of collapse of the external ear canal.
在过去20年里，已有数位作者记录并讨论了因耳机压力导致外耳道塌陷的影响。本报告介绍了一名儿童外耳道塌陷的病例，并展示了声阻抗测听在外耳道塌陷病例中的价值。
