Post Operative Sensorineural Hearing Loss Following Middle Ear Surgery—A Study of 100 Cases
Post Operative Sensorineural Hearing Loss Following Middle Ear Surgery—A Study of 100 Cases作者机构：Department of Otorhinolaryngology & Head and Neck Surgery SMS Medical College & Hospital Jaipur Rajasthan India
出 版 物：《International Journal of Otolaryngology and Head & Neck Surgery》 (耳鼻喉（英文）)
年 卷 期：2018年第7卷第3期
页 面：67-74页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Chronic Otitis Media Mastoidectomy Drill Induced Acoustic Trauma SNHL
摘 要：Background: Drill and surgical tools can cause noise induced hearing loss when used on or adjacent to the ossicular chain and stapes footplate or while working on the mastoid bone. Therefore the drill generated noise has been incriminated as a cause of sensorineural hearing loss in the operated ear. Objective: This study has been undertaken to estimate the proportion of sensorineural hearing loss following middle ear surgery and to assess the bone conduction thresholds of operated ear following middle ear surgery at different follow up periods. Methods: 100 cases of chronic suppurative otitis media posted for middle ear exploration surgery were included in the study. Results: Sensorineural hearing loss was present in 3 cases out of 100 cases (3%) after undergoing mastoid surgery. There was a mean increase in bone conduction thresholds of 0.75 dB at 500 Hz, 1.4 dB at 1 kHz, 1.7 dB at 2 kHz and 2.7 dB at 4 kHz at 6th month of follow up period after surgery with statistical significance at 2 kHz (p = 0.011) and 4 kHz (p Conclusion: Post mastoidectomy hearing loss is of high frequency in nature.
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