Rosito Letícia Schmidt, Netto Luciana Silveira, Teixeira Adriane Ribeiro, da Costa Sady Selaimen
*Department of Otolaryngology-Head and Neck Surgery, Hospital de Clinicas de Porto Alegre †Mother of God Health System ‡Department of Health and Human Communication, Federal University of Rio Grande do Sul §Department of Ophthalmology and Otolaryngology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
Otol Neurotol. 2016 Mar;37(3):214-7. doi: 10.1097/MAO.0000000000000952.
To determine whether middle ear cholesteatoma is associated with, sensorineural hearing loss, and whether patient age, cholesteatoma growth pattern, or, air bone gap size contribute to inner ear impairment.
Cross-sectional comparative.
A tertiary hospital.
The subjects were 115 patients with middle ear cholesteatoma in one ear, and normal video-otoscopy in the contralateral ear (CLE).
Otoendoscopy, pure-tone audiometry.
Bone conduction (BC) threshold differences between the normal CLE and the cholesteatoma ear. Comparisons of these differences between different cholesteatoma growth patterns. Correlation between the air bone gap size in the ear with cholesteatoma and the difference in bone conduction thresholds between both ears.
The cholesteatoma ear was associated with greater BC thresholds than the CLE. With regard to different cholesteatoma growth patterns, the differences between associated BC thresholds were also significant in all groups at all frequencies, with the exception of the two routes of cholesteatoma group at 500 Hz. Comparing BC threshold differences, they were greater in the adult group at 500 Hz. The correlation between the air bone gap media in the ear with cholesteatoma and the difference in bone conduction thresholds between both ears was direct and moderate.
Cholesteatoma was associated with greater BC thresholds at all frequencies tested. The differences were independent of cholesteatoma growth patterns. As bigger the air bone gap in the ear with cholesteatoma, greater the inner ear damage.
确定中耳胆脂瘤是否与感音神经性听力损失相关，以及患者年龄、胆脂瘤生长模式或气骨导间距大小是否会导致内耳损伤。
横断面比较研究。
一家三级医院。
研究对象为115例单耳患有中耳胆脂瘤且对侧耳（对照耳）视频耳镜检查正常的患者。
耳内镜检查、纯音听力测试。
对照耳与胆脂瘤耳之间的骨导（BC）阈值差异。比较不同胆脂瘤生长模式下这些差异。胆脂瘤耳的气骨导间距大小与双耳骨导阈值差异之间的相关性。
胆脂瘤耳的BC阈值高于对照耳。对于不同的胆脂瘤生长模式，除500Hz时胆脂瘤的两种扩展途径组外，所有频率下各亚组的相关BC阈值差异均有统计学意义。比较BC阈值差异，500Hz时成人组差异更大。胆脂瘤耳的气骨导间距与双耳骨导阈值差异之间呈直接且中等程度的相关性。
在所有测试频率下，胆脂瘤均与较高的BC阈值相关。这些差异与胆脂瘤生长模式无关。胆脂瘤耳的气骨导间距越大，内耳损伤越严重。
