Unfavourable prognostic factors in patients treated surgically for otosclerosis

Abstract

Backgrounds: Otosclerosis is the cause of between 5% and 9% of all deafness cases and between 18% and 22% of conductive hearing loss cases. Neurosensory deafness develops in 30% of patients with otosclerosis.

Aims/Objectives: The aim was to seek a correlation that would reflect the dependence of the results of middle ear surgery on the type of abnormalities atypical of otosclerosis but found during the stapedotomy surgery.

Materials and Methods: The analysis included 140 patients who underwent surgery for otosclerosis. The hearing of all patients was assessed using an audiometric test.

Results: In the assessment of changes in the mean bone conduction values, statistically significant differences between the reference group and the subgroup of patients on whom a myringoplasty was performed, as well as in patients with adhesions present in the middle ear spaces, were found only for the 500 Hz frequency.

Conclusion and Significance: The removal of abnormalities, such as the loss of the eardrum (iatrogenic), changes to the lining and adhesions other than those typical of otosclerosis, restores middle ear mechanics after a stapedotomy on the inner ear and leads to a measurable improvement in mean bone conduction values.

Chinese abstract

背景：耳硬化症是5%到9%的耳聋病例的病因, 是18%和22%的传导性听力损失病例的病因。30%的耳硬化症患者出现神经感觉性耳聋。

目的：寻找反映中耳手术结果对异常非典型耳硬化类型的依赖性的关系, 但这种非典型类型发现于镫骨切开手术中。

材料与方法：对140例耳硬化症手术患者进行分析。所有患者的听力均通过听力测试进行评估。

结果：在评价骨导均值变化时, 在参考组和鼓膜成形术患者亚组之间, 以及在中耳间隙有粘连的患者中, 只有在500赫兹的频率时发现有统计学意义的差异。

结论及意义：排除异常, 如耳膜消失（医源性）以及除典型的耳硬化症外的衬里和粘着的变化, 恢复了内耳镫骨切开术后的中耳机制, 导致骨导均值的明显改善。

Keywords:

• Otosclerosis
• prognostic factors
• hearing improvement

Disclosure statement

Conflict of Interest: None

Additional information

Funding

This research was supported by statutory funds of the Department of Otolaryngology of the Jagiellonian University, Krakow, Poland.