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頁籤選單縮合
題名 | 臺灣多頻率鼓室圖在耳硬化症患者的診斷價值=Diagnostic Value of Multi-frequency Tympanometry in Otosclerosis in Taiwan |
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作者姓名(中文) | 邱柏翰; 蔡易錚; 梁家光; 吳幸美; | 書刊名 | 臺灣耳鼻喉頭頸外科雜誌 |
卷期 | 47:3 2012.07-09[民101.07-09] |
頁次 | 頁222-228 |
分類號 | 416.81 |
關鍵詞 | 多頻率鼓室圖; 耳硬化症; 共振; Multi-frequency tympanometry; Otosclerosis; Resonance; |
語文 | 中文(Chinese) |
英文摘要 | BACKGROUND: Otosclerosis presents with progressive hearing impairment of unknown etiology. Results from pure tone audiometry demonstrate that this condition evolves from conductive hearing loss in early stages to mixed or sensorineural hearing loss in later stages. Eventually the diagnosis is depended on experienced otologist and exploratory tympanotomy. The Schwartze sign, Carhart notch, type As tympanogram and HRCT of ear in clinical practice are used for diagnosis of otosclerosis, but they are unable to confirm the diagnosis before surgery. The principle of multi-frequency tympanometry applied to otosclerosis is that as middle ear stiffness increases, so too does resonance frequency. The purpose of this study was to establish the resonance frequency of multi-frequency tympanometry in the diagnosis of otosclerosis in order to increase the diagnostic accuracy and value of multi-frequency tympanometry in Taiwan.METHODS: A retrospective study of surgically-confirmed otosclerosis cases and a normal-hearing control group was implemented to determine individual ranges in multifrequency tympanometry.RESULTS: From 1998 to 2011, we collected multi-frequency tympanometry data from 28 ears surgically confirmed to have otosclerosis, and compared them with those from 56 control ears. In otosclerosis cases, the average value of the resonance frequency was 1153.57±319.99 Hz. In controls, this value was 766.96±204.11 Hz (p<0.01). The resonance frequency of multi-frequency tympanometry ranged from 1029 Hz to 1277 Hz in otosclerosis cases (95% confidence interval). With a cutoff value of 975 Hz, the sensitivity was 75% and the specificity was 82% in diagnosing otosclerosis.CONCLUSIONS: Multi-frequency tympanometry has advantages over conventional tympanometry for the diagnosis of otosclerosis. We hope this study will increase the application of this technology for diagnosing otosclerosis and establishing appropriate cutoff values in Taiwan. |
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