Iacovou Emily, Vlastarakos Petros V, Ferekidis Eleftherios, Nikolopoulos Thomas P
ENT Department, General Hospital of Larnaca, Larnaca, Cyprus.
ENT Department, Lister Hospital, Coreys Mill Lane, SG1 4AB Stevenage, Hertfordshire UK ; 33 Wetherby Close, SG1 5RX Stevenage, Hertfordshire UK.
Indian J Otolaryngol Head Neck Surg. 2013 Jul;65(3):283-7. doi: 10.1007/s12070-011-0470-9. Epub 2012 Jan 6.
The aim of the present paper was to review the current knowledge on multi-frequency tympanometry and explore its role as a diagnostic tool in various otologic conditions. Literature review in Medline and other database sources. Prospective controlled, prospective comparative, and prospective cohort studies, animal studies, retrospective studies and systematic reviews. Multi-frequency tympanometry provides more accurate and detailed information about the middle ear dynamics than standard tympanometry. Otosclerosis and rheumatoid arthritis characteristically increase the resonant frequency (RF) of the middle ear. Ossicular chain discontinuity, atelectatic tympanic membrane, and otitis media with effusion typically decrease the RF of the middle ear. Multifrequency tympanometry can also assess the stage of rheumatoid arthritis in the presence of middle ear involvement. The RF can be affected by the mechanical impedance of the cochlea, and multi-frequency tympanometry can be helpful in the diagnostic workup of LVAS. Multi-frequency tympanometry can be a useful tool to predict the diagnosis of various middle ear pathologies preoperatively, due to the ensuing changes in the RF of the mechano-acoustic system of the middle ear, which can be accurately determined when this methodology is applied.
本文旨在回顾多频鼓室导抗测试的现有知识，并探讨其作为各种耳科疾病诊断工具的作用。检索Medline及其他数据库来源的文献。纳入前瞻性对照研究、前瞻性比较研究、前瞻性队列研究、动物研究、回顾性研究及系统评价。与标准鼓室导抗测试相比，多频鼓室导抗测试能提供有关中耳动态更准确、详细的信息。耳硬化症和类风湿关节炎的特征是增加中耳的共振频率（RF）。听骨链中断、鼓膜萎缩及中耳积液通常会降低中耳的RF。多频鼓室导抗测试还可在中耳受累时评估类风湿关节炎的分期。RF会受耳蜗机械阻抗的影响，多频鼓室导抗测试有助于大前庭导水管综合征的诊断检查。由于中耳机械声学系统的RF会随之发生变化，多频鼓室导抗测试可以成为术前预测各种中耳病变诊断的有用工具，应用该方法时可准确测定这种变化。
