Audiological findings from an adult with thin cochlear nerves

• Prabhu Prashanth

  Department of Audiology, All India Institute of Speech and Hearing

• Shivaswamy Jyothi

  Department of Audiology, All India Institute of Speech and Hearing

抄録

Reported here are audiological findings from an adult with thin cochlear nerves. Magnetic resonance imaging (MRI) revealed that he had a thinner cochlear nerve in the left ear than in the right ear. He had a higher degree of hearing loss in the left ear and poor speech recognition scores for both ears. He had normal middle ear and cochlear functioning. The auditory brainstem response and acoustic reflexes were absent, indicating a retrocochlear pathology. Long latency responses (LLR) revealed normal cortical functioning. Hence, implantation of an auditory brainstem implant might be an option, but the patient would need to be aware of its limitations. This case highlights the importance of MRI in evaluating congenital malformations of the cochlear nerve when audiological findings indicate a retrocochlear pathology.

収録刊行物

• Intractable & Rare Diseases Research

  Intractable & Rare Diseases Research 6 (1), 72-75, 2017

  特定非営利活動法人 バイオ＆ソーシャル・サイエンス推進国際研究交流会

キーワード

• Magnetic resonance imaging
• cochlear nerve
• auditory brainstem response
• long latency responses

詳細情報

• CRID: 1390001205546827008
• NII論文ID: 130005466197
• DOI: 10.5582/irdr.2016.01081
• ISSN: 2186361X
• ISSN: 21863644
• Web Site: https://www.jstage.jst.go.jp/article/irdr/6/1/6_2016.01081/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2018007393
• 本文言語コード: en
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