中耳共振频率对鼓室积液的诊断价值  

Diagnostic value of middle ear resonant frequency in hydrotympanum

作　　者：赖丹[1] 刘世喜[2] 

机构地区：[1]泸州医学院附属医院耳鼻咽喉头颈外科,四川泸州646000 [2]四川大学华西医院耳鼻咽喉头颈外科

出　　处：《临床耳鼻咽喉头颈外科杂志》2008年第7期298-300,共3页Journal of Clinical Otorhinolaryngology Head And Neck Surgery

摘　　要：目的:探讨226Hz静态鼓室图与中耳共振频率诊断鼓室积液的价值,观察两者结合可否提高诊断效能。方法:前瞻性研究对比观察分泌性中耳炎组和对照组,以耳镜检查、纯音测听及GSI-33型中耳分析仪测试结果为标准,将对照组共振频率90%的可信区间(5%～95%)设为正常范围,对分泌性中耳炎组的共振频率进行正常或不正常归类,并对其鼓室图形为B、C型或异型者进行鼓膜穿刺抽液,以抽出液体者为阳性。结果:中耳共振频率在900～1100Hz之间为正常,分泌性中耳炎组的共振频率明显低于对照组(P<0.01)。B型曲线的抽液阳性率为83%,明显高于C型和异型曲线抽液阳性率(P<0.05)。共振频率正常者,其抽液阳性率为0。≤500Hz者的鼓室积液阳性率明显高于>500Hz者(P<0.01)。结论:通过测试中耳共振频率对判断鼓室是否积液,尤其是对鼓室图形为C型或异型者有重要临床意义。Objective：To investigate the diagnostic value of 226 Hz tympanometry and middle ear resonant frequency （RF） in adults with hydrotympanum. Discuss whether the resonant frequency combined with conventional 226 Hz tympanometry could increase the effectiveness for diagnosis of hydrotympanum. Method：Prospective study was applied to compare the normal hearing group and the test group. The otoscopic findings, pure tone audiometry and GSI-33 middle ear analyzer were considered standard. A 90% range of RF values from normal hearing group was considered standard to distinguish normal from abnormal RF values in test group. The subjects who had type B, C or abnormal tympanograms were performed with tympanocentesis. Hydrotympanum were confirmed when the results were positive. Result：The middle ear resonant frequency in adults range from 900 Hz to 1 100 Hz was considered normal. There was found to be a statistically significant decrease in RF values in ears with OME compared to normative data （P〈0.01）. The positive percentage of tympanocentesis on type ＂B＂ tympanograms were 83%, which was significantly higher than that of tympanocentesis on type ＂C＂ or abnormal tympanograms （P〈0.05）. The positive percentage of tympanocentesis was 0 when the resonant frequency was normal. The positive percentage of tympanocentesis which the resonant frequency were less than 500 Hz were significantly higher than the subjects whose resonant frequency were more than 500 Hz. Conclusion.. Middle ear resonant frequency testing has very important clinic value for diagnosis of hydrotympanum, especially for those patients with type C or abnormal tympanograms.

关 键 词：中耳炎 伴渗出液 中耳共振频率 鼓室积液 

分 类 号：R764.21[医药卫生—耳鼻咽喉科]