共振频率对中耳病变的诊断意义  

Diagnostic value of resonance frequency on middle ear pathologies

作　　者：周莲[1] 彭皎皎[1] 冯宁宇[1] 郑虹[1] 

机构地区：[1]四川大学华西医院耳鼻咽喉头颈外科,四川成都610041

出　　处：《四川医学》2009年第4期477-479,共3页Sichuan Medical Journal

摘　　要：目的了解和探讨共振频率对鼓膜完整的中耳疾病的鉴别诊断价值。方法通过对正常耳(60耳),听骨链固定耳(6耳),听骨链中断耳(5耳)和不典型分泌性中耳炎耳(19耳)进行共振频率及静态声导抗测试,以手术发现作为诊断金标准,了解共振频率对鼓膜完整的中耳疾病的鉴别诊断价值。结果各组中耳共振频率分别为正常耳(950±260.78)Hz;听骨链固定耳(1466±199.16)Hz,较正常耳高(P<0.01);听骨链中断耳(660±124.49)Hz,较正常耳低(P<0.01)。不典型分泌性中耳炎耳(402±87.36)Hz,较前三者都低(P<0.01)。正常耳声导纳值为(0.5±0.26)mmho,听骨链固定耳和不典型分泌性中耳炎耳声导纳值分别为(0.2±0.10)mmho,(0.2±0.16)mmho,均较正常耳低(P<0.05),听骨链中断耳声导纳值为(1.8±1.65)mmho,较正常耳高(P<0.01)。结论共振频率结合声导纳值对鼓膜完整的中耳疾病的鉴别诊断有重要参考价值。Objective To investigate the diagnostic value of the resonance frequency in middle ear pathologies with intact tympanic membranes. Methods 60 normal ears, 6 ears of ossicular fixation, 5 ears of ossicular discontinuity, and 19 ears of a typical secretory otitis media are tested by statical acoustic immitanoe and multifrequency tympanometry, and the gold standard of diagnose is finding in operations. Results The resonance frequency of normal ears is （950±260.78）Hz, whereas it is （1466±199.16）Hz, （660±124.49）Hz and （402±87.36）Hz in ossicular fixation,ossicular discontinuity and secretory otitis media respectively, it is the highest in ossicuiar fixation （ P 〈 0.01） ; and it is the lowest in secretory otitis media （ P 〈 0.01 ）. The acoustic admittance of normal ears is （0.05±0.26） mmho, whereas it is （0.2±0.10） mmho, and （0.2±0.16） mmho in ossicular fixation and secretory otitis media respectively, both of which are lower than the normal ones（ P 〈 0.05）; it is （ 1.8±1.65） mmho, which is higher than normal ones （ P 〈 0.01）. Conclusion Resonance frequenoy and acoustic admittance have distinguishabh diagnostic value on middle ear pathologies with intact tympanic.

关 键 词：共振频率 传导性聋 听骨链中断 听骨链固定 

分 类 号：R764.43[医药卫生—耳鼻咽喉科]