Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Am J Otolaryngol. 2021 May-Jun;42(3):102901. doi: 10.1016/j.amjoto.2021.102901. Epub 2021 Jan 9.
To investigate the effects of the location and size of tympanic membrane (TM) perforation and middle ear cavity volume on conductive hearing loss in patients with TM perforation.
Data were collected via a retrospective medical chart review.
We enrolled 128 patients with a mean age of 45.6 ± 10.1 years. The mean perforation size was 21.2 ± 8.6% of the TM area, and the mean air-bone gap (ABG) was 20.2 ± 8.6 dB HL on pure tone audiometry. Patients were divided into two groups based on mean ABG. Patients with a large ABG had a significantly larger TM perforation area and smaller mastoid volume. The TM perforation was most commonly located in the central section. However, regression analyses showed that the proportion of the perforated TM area was the only independent predictor of a large ABG (odds ratio, 1.053; 95% confidence interval, 1.022-1.085; p = 0.001). When we analyzed the frequencies in which hearing loss occurred due to TM perforation, we confirmed that hearing loss occurred mainly in the low-frequency range.
In patients with TM perforation, conductive hearing loss occurs mainly at low frequencies and in proportion to the size of the TM perforation.
研究鼓膜（TM）穿孔的位置和大小以及中耳腔体积对鼓膜穿孔患者传导性听力损失的影响。
通过回顾性病历审查收集数据。
我们共纳入 128 例平均年龄为 45.6±10.1 岁的患者。穿孔大小的平均值为 TM 面积的 21.2±8.6%，纯音测听的平均气骨导差（ABG）为 20.2±8.6dB HL。根据平均 ABG 将患者分为两组。ABG 较大的患者鼓膜穿孔面积明显较大，乳突体积较小。TM 穿孔最常见于中央部分。然而，回归分析显示，穿孔的 TM 面积比例是大 ABG 的唯一独立预测因子（比值比，1.053；95%置信区间，1.022-1.085；p=0.001）。当我们分析因 TM 穿孔导致听力损失的频率时，我们证实听力损失主要发生在低频范围。
在鼓膜穿孔患者中，传导性听力损失主要发生在低频范围内，与 TM 穿孔的大小成比例。
