Abstract：
OBJECTIVE: The definitive treatment for chronic suppurative otitis media is surgery. Surgical technique and procedure varies according to individual case findings and pathology and may require mastoidectomies in which the canal wall is preserved or lowered to eradicate disease from mastoid air cells. Surgical treatment of chronic middle ear disease carries a risk of damage to the inner ear. The aim of this study was to investigate whether the noise produced by the tour system following chronic ear surgery causes sensorineural hearing loss, a condition for which not many studies have been published in the literature.
METHODS: The study consisted of a total of 49 patients with type I, type II and type III canal wall preservation and 62 patients with tympanoplasty with canal wall preservation and lowering. Bone and air thresholds were compared before and after middle ear surgery. Changes in bone and air thresholds were compared according to the type of tympanoplasty.
RESULTS: In the ICW-I, ICW-II and ICW-III tympanoplasties, and in the ICW and CWD tympanoplasties, the preoperative and postoperative values of the opposite ear hearing measurements were performed, and did not differ according to the type of surgery. There is no correlation drilling duration and hearing for the opposite ear.
CONCLUSIONS: The prevention of postoperative sensorineural hearing loss depends on multiple factors, and assessing the magnitude of hearing loss in relation to these factors is important in determining the success of the surgery.
METHODS: The study consisted of a total of 49 patients with type I, type II and type III canal wall preservation and 62 patients with tympanoplasty with canal wall preservation and lowering. Bone and air thresholds were compared before and after middle ear surgery. Changes in bone and air thresholds were compared according to the type of tympanoplasty.
RESULTS: In the ICW-I, ICW-II and ICW-III tympanoplasties, and in the ICW and CWD tympanoplasties, the preoperative and postoperative values of the opposite ear hearing measurements were performed, and did not differ according to the type of surgery. There is no correlation drilling duration and hearing for the opposite ear.
CONCLUSIONS: The prevention of postoperative sensorineural hearing loss depends on multiple factors, and assessing the magnitude of hearing loss in relation to these factors is important in determining the success of the surgery.
摘要：
目的：慢性化脓性中耳炎的明确治疗方法是手术治疗。手术技术和程序根据个别情况的发现和病理而有所不同，可能需要进行乳突切除术，其中保留或降低管壁以根除乳突空气细胞中的疾病。慢性中耳疾病的手术治疗具有损害内耳的风险。这项研究的目的是调查慢性耳部手术后由巡回系统产生的噪音是否会导致感觉神经性听力损失，文献中发表的研究并不多。
方法：该研究共包括49例I型患者，Ⅱ型和Ⅲ型管壁保留和62例鼓室成形术并保留和降低管壁。比较中耳手术前后的骨和空气阈值。根据鼓室成形术的类型比较骨和空气阈值的变化。
结果：在ICW-I中，ICW-II和ICW-III鼓膜成形术，在ICW和CWD鼓膜成形术中，对侧耳听力测量的术前和术后值，根据手术类型没有差异。对耳朵的钻孔持续时间和听力没有相关性。
结论：预防术后感音神经性耳聋取决于多种因素，评估与这些因素相关的听力损失的程度对于决定手术的成功非常重要。
方法：该研究共包括49例I型患者，Ⅱ型和Ⅲ型管壁保留和62例鼓室成形术并保留和降低管壁。比较中耳手术前后的骨和空气阈值。根据鼓室成形术的类型比较骨和空气阈值的变化。
结果：在ICW-I中，ICW-II和ICW-III鼓膜成形术，在ICW和CWD鼓膜成形术中，对侧耳听力测量的术前和术后值，根据手术类型没有差异。对耳朵的钻孔持续时间和听力没有相关性。
结论：预防术后感音神经性耳聋取决于多种因素，评估与这些因素相关的听力损失的程度对于决定手术的成功非常重要。
