Department of Audiology and Prevention of Communication Disorders, All India Institute of Speech and Hearing, Manasagangothri, Karnataka, India.
Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Karnataka, India.
J Int Adv Otol. 2024 Mar 27;20(2):158-163. doi: 10.5152/iao.2024.231048.
: Middle ear effusion (MEE) and tympanic membrane perforation (TMP) are difficult to distinguish using existing immittance techniques, necessitating the use of a separate test battery. Wideband absorbance (WBA) tympanometry is a new enhanced technique, and studies have shown a reliable WBA pattern to identify middle ear disorders. Thus, the study was performed to determine the WBA across the frequencies in ears with MEE, TMP, and compared with normal hearing individuals.
: A total of 109 ears with TMP and 122 ears with MEE in the age range of 22-50 years were compared with 150 normal hearing ears. Otoscopic examination, middle ear fluid monitor, pure tone audiometry, and immittance measurements were performed to categorize the subject ears into groups. The absorbance levels at peak and ambient pressure across one-third octave frequencies in each group were statistically evaluated at α = 0.05.
: Wideband absorbance for the normal ear group was lowest at low (<800 Hz) and high frequencies (>3000 Hz) and highest at mid-frequency regions (800-3000 Hz). The MEE group had significantly lower WBA at all frequencies, and TMP group showed reduced WBA at low and mid-frequencies (<2500 Hz). Wideband absorbance at peak pressure was slightly higher than ambient pressure in all the groups. Receiver operating characteristic analysis demonstrated a high diagnostic value in the mid-frequency region for both the TMP and MEE groups.
: Wideband absorbance provides high reliability in discriminating between MEE and TMP and has a unique WBA pattern. Thus, WBA can be a useful diagnostic tool for the identification of middle ear disorders.
中耳积液（MEE）和鼓膜穿孔（TMP）很难通过现有的导抗技术区分，因此需要使用单独的测试套件。宽带声导纳（WBA）鼓室图测试是一种新的增强技术，研究表明，可靠的 WBA 模式可用于识别中耳疾病。因此，本研究旨在确定 MEE、TMP 患者的各频率宽带声导纳，并与正常听力者进行比较。
比较了年龄在 22-50 岁之间的 109 只 TMP 耳和 122 只 MEE 耳与 150 只正常听力耳。通过耳镜检查、中耳积液监测、纯音听阈测试和导抗测试将受试者的耳朵分类。在每个组中，在三分之一倍频程频率处的峰压和环境压力下的吸声水平在α=0.05 时进行统计学评估。
正常耳组的宽带吸声在低频（<800 Hz）和高频（>3000 Hz）时最低，在中频（800-3000 Hz）时最高。MEE 组在所有频率下的 WBA 均显著降低，TMP 组在低频和中频（<2500 Hz）时 WBA 降低。在所有组中，峰压下的宽带吸声略高于环境压力。受试者工作特征分析表明，TMP 和 MEE 组在中频区域具有较高的诊断价值。
宽带吸声在区分 MEE 和 TMP 方面具有较高的可靠性，并且具有独特的 WBA 模式。因此，WBA 可以成为识别中耳疾病的有用诊断工具。
