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Zhang W, Shi J, Yin Y, Ma M, Lyu J, Yang J, Zhao W, Yuan Y. Audiological Characteristics of Vestibular Schwannoma Patients With Normal Pure-Tone Audiometry. Otolaryngol Head Neck Surg 2024; 171:502-510. [PMID: 38667629 DOI: 10.1002/ohn.783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 07/27/2024]
Abstract
OBJECTIVE To investigate the audiological characteristics of vestibular schwannoma (VS) patients with normal pure-tone audiometry (PTA) results. STUDY DESIGN A retrospective study. SETTING Forty-two VS patients with normal PTA results from October 2016 to October 2022 were included. METHODS Normal PTA was defined when the hearing threshold is ≤25 dB hearing loss (HL) in each test frequency and the PTA is ≤25 dB HL. Results of multiple audiological tests such as the auditory brainstem response (ABR), distortion product otoacoustic emission (DPOAE), multiple auditory steady-state responses threshold (ASSR), and speech discrimination score were retrospectively reviewed. Demographic data of these patients were also been collected. RESULTS According to our results, the ABR and average ASSR threshold of the affected side were statistically significantly higher in VS patients with normal PTA. ABR waveforms on the affected side also showed more abnormalities. The DPOAE pass rates of the affected side were lower than the unaffected side while the amplitude and signal-to-noise ratio rate was also lower. In addition, we used magnetic resonance imaging 3-dimensional reconstruction images to measure the volume of tumors in these patients. We also found that higher ABR threshold means lager tumor size in patients with normal PTA. CONCLUSION VS patients with normal PTA result cannot be assumed to have no impairment of hearing function. ABR, DPOAE, and ASSR results showed the characteristic changes in the affect ear. ABR threshold has the highest sensitivity for hearing abnormalities and is strong relative with tumor size in patients with normal PTA.
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Affiliation(s)
- Weixun Zhang
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | | | - Yanbo Yin
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Mengye Ma
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Jihan Lyu
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Juanmei Yang
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Weidong Zhao
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Yasheng Yuan
- Department of Otorhinolaryngology, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
- Research Institute of Otolaryngology, Fudan University, Shanghai, China
- Lateral Skull Base Diagnosis and Treatment Center, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai, China
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Sekiya T, Holley MC. Cell Transplantation to Restore Lost Auditory Nerve Function is a Realistic Clinical Opportunity. Cell Transplant 2021; 30:9636897211035076. [PMID: 34498511 PMCID: PMC8438274 DOI: 10.1177/09636897211035076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Hearing is one of our most important means of communication. Disabling hearing loss (DHL) is a long-standing, unmet problem in medicine, and in many elderly people, it leads to social isolation, depression, and even dementia. Traditionally, major efforts to cure DHL have focused on hair cells (HCs). However, the auditory nerve is also important because it transmits electrical signals generated by HCs to the brainstem. Its function is critical for the success of cochlear implants as well as for future therapies for HC regeneration. Over the past two decades, cell transplantation has emerged as a promising therapeutic option for restoring lost auditory nerve function, and two independent studies on animal models show that cell transplantation can lead to functional recovery. In this article, we consider the approaches most likely to achieve success in the clinic. We conclude that the structure and biochemical integrity of the auditory nerve is critical and that it is important to preserve the remaining neural scaffold, and in particular the glial scar, for the functional integration of donor cells. To exploit the natural, autologous cell scaffold and to minimize the deleterious effects of surgery, donor cells can be placed relatively easily on the surface of the nerve endoscopically. In this context, the selection of donor cells is a critical issue. Nevertheless, there is now a very realistic possibility for clinical application of cell transplantation for several different types of hearing loss.
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Affiliation(s)
- Tetsuji Sekiya
- Department of Otolaryngology, Head and Neck Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Neurological Surgery, Hikone Chuo Hospital, Hikone, Japan
- Tetsuji Sekiya, Department of Otolaryngology, Head and Neck Surgery, Kyoto University Graduate School of Medicine, 606-8507 Kyoto, Japan,.
| | - Matthew C. Holley
- Department of Biomedical Science, University of Sheffield, Firth Court, Sheffield, England
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Soh LJM, Chan YM. Revisiting Oto-Acoustic Emissions. PROCEEDINGS OF SINGAPORE HEALTHCARE 2015. [DOI: 10.1177/201010581502400204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Oto-acoustic emissions (OAEs) are an audiometric diagnostic test that allows quick objective measure of hair cell function in the inner ear. It is a reflection of hearing function at the interface of conductive and sensorineural components in the human ear. Unfortunately, it is not commonly used due to the unique expertise and niche equipment required to successfully carry it out. This article is to further shed light about the use of such tests to junior doctors so that such resources can be better utilised. It also reviews the current and possible future applications of OAEs at the frontiers in otology today.
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Affiliation(s)
| | - Yew Meng Chan
- Department of Otorhinolaryngology, Singapore General Hospital, Singapore
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