Ye Fanglei, Zhao Kun, Chen Bei, Gao Pei, Wang Xiaodong
Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2013 Jul;27(13):701-3.
To investigate and analyze the characteristic of destructive ossicular chain and it's impact on air-bone gap (ABG) among patients with cholesteatoma.
Data from 204 cases (213 ears) undergoing an initial surgery for cholesteatoma were retrospectively reviewed to evaluate the relationships between preoperative pure tone audiometry data and intraoperative assessment of individual ossicular destruction.
Incus was the most significantly affected ossicle. Furthermore, the destruction of malleus and stapes was often accompanied by the destruction of incus. A partially eroded incus caused significantly increase in ABG from that of an intact incus with cholesteatoma abutting (P < 0.05). A partially eroded incus and a partially eroded stapes caused significantly increase in ABG compared to a partially eroded incus (P < 0.05). A completely eroded incus caused significantly increase in ABG compared to a partially eroded incus (P < 0.05). False fibre-connected would significantly influence on ABG in some ossicular chain erosion patterns (P < 0.05). Cholesteatoma abutting an intact ossicle significantly altered average ABG compared to a normal ossicle (P < 0 01).
Different ossicular chain erosion pattern caused different degrees of ABG.
探讨并分析胆脂瘤患者听骨链破坏的特点及其对气骨导间距（ABG）的影响。
回顾性分析204例（213耳）初次接受胆脂瘤手术患者的数据，以评估术前纯音听力测定数据与术中个体听骨破坏评估之间的关系。
砧骨是受影响最显著的听骨。此外，锤骨和镫骨的破坏常伴有砧骨的破坏。与胆脂瘤毗邻的完整砧骨相比，部分侵蚀的砧骨导致ABG显著增加（P < 0.05）。与部分侵蚀的砧骨相比，部分侵蚀的砧骨和部分侵蚀的镫骨导致ABG显著增加（P < 0.05）。与部分侵蚀的砧骨相比，完全侵蚀的砧骨导致ABG显著增加（P < 0.05）。假纤维连接在某些听骨链侵蚀模式中会对ABG产生显著影响（P < 0.05）。与正常听骨相比，胆脂瘤毗邻完整听骨会显著改变平均ABG（P < 0.01）。
不同的听骨链侵蚀模式导致不同程度的ABG。
