Audiology and Neuro-Otology最新文献

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Factors Predictive of Binaural Hearing Restoration by Cochlear Implant in Single-Sided Deafness. 单侧耳聋患者人工耳蜗双耳听力恢复的预测因素
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-01-08 DOI: 10.1159/000535650
Guillaume Gersdorff, Vincent Péan, Séverine Camby, Sébastien Barriat, Philippe P Lefebvre
{"title":"Factors Predictive of Binaural Hearing Restoration by Cochlear Implant in Single-Sided Deafness.","authors":"Guillaume Gersdorff, Vincent Péan, Séverine Camby, Sébastien Barriat, Philippe P Lefebvre","doi":"10.1159/000535650","DOIUrl":"10.1159/000535650","url":null,"abstract":"<p><strong>Introduction: </strong>Cochlear implants (CIs) can restore binaural hearing in cases of single-sided deafness (SSD). However, studies with a high level of evidence in support of this phenomenon are lacking. The aim of this study is to analyze the effectiveness of CIs using several spatialized speech-in-noise tests and to identify potential predictors of successful surgery.</p><p><strong>Methods: </strong>Ten cases underwent standard CI surgery (MEDEL-Flex24). The speech-in-noise test was used in three different spatial configurations. The noise was presented from the front (N0), toward the CI (NCI), and toward the ear (Near), while the speech was always from the front (S0). For each test, the speech-to-noise ratio at 50% intelligibility (SNR50) was evaluated. Seven different effects were assessed (summation, head shadow [HS], speech released of masking [SRM], and squelch for the CI and for the ear).</p><p><strong>Results: </strong>A significant summation effect of 1.5 dB was observed. Contralateral PTA was positively correlated with S0N0-B and S0NCI-B (CIon and unplugged ear). S0N0-B results were positively correlated with S0N0-CIoff (p &lt; 0.0001) and with S0Near-CIoff results (p = 0.004). A significant positive correlation was found between delay post-activation and HS gain for the CI (p = 0.005). Finally, the HS was negatively correlated with the squelch effect for the ear.</p><p><strong>Conclusion: </strong>CI benefits patients with SSD in noise and can improve the threshold for detecting low-level noise. Contralateral PTA could predict good postoperative results. Simple tests performed preoperatively can predict the likelihood of surgical success in reversing SSD.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"228-238"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139405407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Different Auditory Stimuli and Cognitive Tasks on Balance in Healthy Young Adults. 不同听觉刺激和认知任务对健康年轻人平衡能力的影响
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-10-29 DOI: 10.1159/000541841
Özge Gedik Toker, Elif Durgut, Erdem Emre Yılmaz, Kubra Alpay, Hulya Nilgun Gurses
{"title":"Effects of Different Auditory Stimuli and Cognitive Tasks on Balance in Healthy Young Adults.","authors":"Özge Gedik Toker, Elif Durgut, Erdem Emre Yılmaz, Kubra Alpay, Hulya Nilgun Gurses","doi":"10.1159/000541841","DOIUrl":"10.1159/000541841","url":null,"abstract":"<p><strong>Introduction: </strong>This study investigated the effect of different auditory stimuli and cognitive tasks on balance in healthy young adults.</p><p><strong>Methods: </strong>Thirty-three participants, aged 23.33 ± 2.43 years, were included in the study. The hearing levels of the participants were determined. Static and dynamic postural stability and limits of stability (LOS) tests were performed in the absence of auditory stimuli, in the presence of spondee word lists at 70 dB(A) and in the presence of spondee+white noise (-6 dB signal-to-noise ratio [SNR]), while auditory stimuli were presented bilaterally with supra-aural headphones. Participants were asked to repeat the words they listened to while performing balance-related tasks.</p><p><strong>Results: </strong>No significant differences between the three conditions were observed in the postural stability and LOS results. Increase in total repetition error was observed as the listening task became more difficult.</p><p><strong>Conclusion: </strong>The presence of auditory stimuli and the cognitive tasks did not cause any changes in the participants' balance.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"508-516"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142549086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Utricular Dysfunction and Hearing Impairment Affect Spatial Navigation in Community-Dwelling Healthy Adults: Analysis from the Baltimore Longitudinal Study of Aging. 在社区居住的健康成年人中,胞室功能障碍和听力障碍会影响他们的空间导航能力:巴尔的摩老龄化纵向研究分析》。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-03-15 DOI: 10.1159/000537769
Colin R Grove, Eric R Anson, Yuri Agrawal, Eleanor M Simonsick, Michael C Schubert
{"title":"Utricular Dysfunction and Hearing Impairment Affect Spatial Navigation in Community-Dwelling Healthy Adults: Analysis from the Baltimore Longitudinal Study of Aging.","authors":"Colin R Grove, Eric R Anson, Yuri Agrawal, Eleanor M Simonsick, Michael C Schubert","doi":"10.1159/000537769","DOIUrl":"10.1159/000537769","url":null,"abstract":"<p><strong>Introduction: </strong>Spatial navigation, the ability to move through one's environment, is a complex skill utilized in everyday life. The effects of specific vestibular end-organ deficits and hearing impairments on spatial navigation have received little to no attention. We hypothesized that hearing impairment adversely affects spatial navigation and that bimodal impairments (vestibular and hearing) further impair navigation ability.</p><p><strong>Methods: </strong>Data from 182 participants in the Baltimore Longitudinal Study of Aging who had interpretable results for the video head impulse test (vHIT), cervical vestibular evoked myogenic potentials (cVEMP) and ocular vestibular evoked myogenic potentials (oVEMP), audiometric testing, and the triangle completion test (TCT) were retrospectively analyzed. Multiple linear regression, controlling for age, sex, and cognition, was employed to identify predictors of TCT performance in terms of end-point error, angle deviation, and distance walked.</p><p><strong>Results: </strong>oVEMP abnormalities were associated with larger end-point error (p = 0.008) and larger angle deviation (p = 0.002) but were not associated with distance walked (p = 0.392). Abnormalities on cVEMP testing and vHIT were not associated with distance walked (p = 0.835, p = 0.300), end-point error (p = 0.256, p = 0.808), or angle deviation (p = 0.192, p = 0.966). Compared with normal-hearing adults, hearing-impaired adults walked a shorter distance during the TCT (p = 0.049) but had a similar end-point error (p = 0.302) and angle deviation (p = 0.466). There was no interaction between vestibular and hearing function for predicting spatial navigation ability.</p><p><strong>Conclusion: </strong>In this cohort analysis, utricular dysfunction and hearing impairment were associated with poorer spatial navigation performance. We postulate that hearing impairment negatively affects one's ability to use real-time, intrinsic auditory cues and/or prior experience to guide navigation.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"357-366"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140144665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vestibular Hypofunction Secondary to Topical Use of Aminoglycosides in Ears with Perforated Tympanic Membrane. 鼓膜穿孔患者局部使用氨基糖苷类药物后继发的前庭功能减退。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-04-18 DOI: 10.1159/000538756
Rocío González-Aguado, Aida Veiga-Alonso, Carmelo Morales-Angulo
{"title":"Vestibular Hypofunction Secondary to Topical Use of Aminoglycosides in Ears with Perforated Tympanic Membrane.","authors":"Rocío González-Aguado, Aida Veiga-Alonso, Carmelo Morales-Angulo","doi":"10.1159/000538756","DOIUrl":"10.1159/000538756","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study was to identify and clinically characterize patients treated in an Otoneurology Unit who experienced vestibular ototoxicity as a result of using aminoglycoside ear drops during outbreaks of superinfection in chronic otitis media.</p><p><strong>Material and methods: </strong>An observational retrospective study was conducted, including patients with perforated eardrums who developed vestibular ototoxicity within the past 10 years following the application of topical ear aminoglycosides in a tertiary referral center. The study encompassed the assessment of the clinical presentation, treatment, quality of life, and evolution after treatment of the identified individuals.</p><p><strong>Results: </strong>During the study period, 6 patients, aged between 33 and 71 years, developed vestibular ototoxicity following the use of topical aminoglycoside drops due to infection flares in chronic otitis media. All cases involved the use of gentamicin. Two cases were unilateral, and 4 were unilateral. The onset of symptoms occurred within one to four weeks of using the drops, resulting in all patients experiencing instability without vertigo attacks. After discontinuing the drops and undergoing vestibular rehabilitation, 4 patients experienced sequelae, with 2 patients (both with bilateral vestibular hypofunction) suffering significant impairment in their quality of life.</p><p><strong>Conclusions: </strong>Vestibular ototoxicity due to the topical application of aminoglycosides during acute exacerbations of chronic otitis media is a rare occurrence. However, given its potential for severe consequences and the fact that we are still encountering patients with this condition, healthcare professionals should explore alternative antibacterial agents that offer similar efficacy.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"425-428"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140867356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cochlear Implantation in Children with Auditory Neuropathy: Meta-Analysis. 听力神经病变儿童人工耳蜗植入术:meta分析。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2023-11-28 DOI: 10.1159/000533298
Marina Bernardes, Claudiney Costa, Hugo Ramos, Rodolfo Almeida, Débora Gobbo, Natália Carasek, Fayez Bahmad, Pauliana Lamounier
{"title":"Cochlear Implantation in Children with Auditory Neuropathy: Meta-Analysis.","authors":"Marina Bernardes, Claudiney Costa, Hugo Ramos, Rodolfo Almeida, Débora Gobbo, Natália Carasek, Fayez Bahmad, Pauliana Lamounier","doi":"10.1159/000533298","DOIUrl":"10.1159/000533298","url":null,"abstract":"<p><strong>Background: </strong>Auditory neuropathy (AN) is a nosological entity of unknown etiology, which is associated with fluctuations in rates of speech discrimination. Its diagnosis is based on presence of otoacoustic emissions and lack of, or abnormal, brainstem auditory evoked potential. With respect to treatment, we have variable results in the literature about development of speech perception and skills, in children with AN and cochlear implant (CI) rehabilitation.</p><p><strong>Objectives: </strong>Comparatively assessing results recorded for the development of auditory and speech skills in children with auditory neuropathy spectrum disorder (ANSD), who were subjected to cochlear implantation, in comparison to results recorded for children with sensorineural hearing loss associated with other causes was the objective of this study.</p><p><strong>Method: </strong>A systematic literature review with meta-analysis was performed, with studies published from 1975 to 2023.</p><p><strong>Results: </strong>Nineteen studies were included in the systematic review, and eight were selected for the meta-analysis, which showed there was no evidence allowing the conclusion that the two groups were different from each other about results in speech performance after 1 year of CI placement.</p><p><strong>Conclusion: </strong>Therefore, this study shows that CI provides the comparable benefit to children with ANSD in comparison to children with neurosensory hearing loss associated with other causes in their speech development.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"167-180"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138453142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mefloquine-Induced Inner Ear Damage and Preventive Effects of Electrical Stimulation: An Electrophysiological Study. 甲氟喹诱发的内耳损伤和电刺激的预防作用:电生理学研究
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2023-08-22 DOI: 10.1159/000531788
Mohammad Mahdi Ali-Nazari, Nariman Rahbar, Hassan Haddadzade Niri, Behnoosh Vasaghi-Gharamaleki
{"title":"Mefloquine-Induced Inner Ear Damage and Preventive Effects of Electrical Stimulation: An Electrophysiological Study.","authors":"Mohammad Mahdi Ali-Nazari, Nariman Rahbar, Hassan Haddadzade Niri, Behnoosh Vasaghi-Gharamaleki","doi":"10.1159/000531788","DOIUrl":"10.1159/000531788","url":null,"abstract":"<p><strong>Introduction: </strong>Mefloquine is an antimalarial medicine used to prevent and treat malaria. This medicine has some side effects, including ototoxicity. This study, which was designed in two phases, aimed to investigate the side effects of mefloquine and evaluate the preventive effects of electrical stimulation on these side effects.</p><p><strong>Methods: </strong>In the first phase, two doses of mefloquine (50 and 200 μ<sc>M</sc>) were injected into male rats, and after 7 days, they were evaluated by an auditory brainstem response (ABR) test. In the second phase, electrical stimulation was applied for 10 days, and then a toxic dose of mefloquine was injected. Similar to the first phase of the study, the animals were evaluated by an ABR test after 7 days.</p><p><strong>Results: </strong>In the first phase, the results showed that a high dose of mefloquine increased the ABR threshold and wave I latency; however, these changes were not observed in the second phase.</p><p><strong>Conclusion: </strong>Application of electrical stimulation could prevent the ototoxic effects of mefloquine. According to the findings of the present study, electrical stimulation can be used as a preconditioner to prevent the ototoxic effects of mefloquine.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"88-95"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10053740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implantable Hearing Devices in Ontario: A Population-Based Study of Access to Care and Access to Devices. 安省植入式听力装置:一项以人群为基础的获得护理和设备的研究。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2023-11-20 DOI: 10.1159/000534384
Keshinisuthan Kirubalingam, Paul Nguyen, Ann Kang, Jason A Beyea
{"title":"Implantable Hearing Devices in Ontario: A Population-Based Study of Access to Care and Access to Devices.","authors":"Keshinisuthan Kirubalingam, Paul Nguyen, Ann Kang, Jason A Beyea","doi":"10.1159/000534384","DOIUrl":"10.1159/000534384","url":null,"abstract":"<p><strong>Introduction: </strong>The prevalence of hearing loss in Canada is high, with many patients requiring implantable hearing devices (IHDs) as treatment for their disease severity. Despite this need, many eligible patients do not pursue these interventions. The objective of this study was to examine rates of IHD based on geographic location to understand locoregional variation in access to care.</p><p><strong>Study design: </strong>This was a retrospective population-based cohort study.</p><p><strong>Setting: </strong>All hospitals in the Canadian province of Ontario.</p><p><strong>Methods: </strong>Of all patients with IHD between April 1, 1992, and March 31, 2021, cochlear implants (CIs) (4,720) and bone-anchored hearing aids (BAHA) (1,125) cohorts were constructed. Place of residence was categorized based on Local Health Integrated Network (LHIN). Summary statistics for place of surgical institution based on LHIN at first surgery, name of institution of first surgery and \"as the crow flies\" distance (in km) between place of residence and surgical institution were calculated. Rate of implantations was calculated for LHIN regions based on number of surgeries per 1,000,000 persons/years.</p><p><strong>Results: </strong>Toronto Central, Central, Central East, and Champlain regions had &gt;10% of patients undergoing BAHA and CI. 1,019 (90.6%) and 4,232 (89.7%) of patients receiving BAHA and CI, respectively, resided in urban/suburban regions and 94 patients (8.4%) and 436 (9.2%) resided in rural regions. The median distance between residential location and the institution was 46.4 km (interquartile range [IQR], 18.9-103.6) and 44.7 km (IQR, 15.7-96.9) for BAHA and CI, respectively. From 1992 to 2021, the number of CI and BAHA performed across Ontario increased by 17 folds and 6 folds, respectively.</p><p><strong>Conclusion: </strong>This large comprehensive population study provides longitudinal insight into the access to care of IHD based on geographic factors. Our findings of the present population-based study indicate an overall increase in access to devices with disproportionate access to care based on geographic locations. Further work is needed to characterize barriers to IHD access to align with demands.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"136-145"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138178032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cochlear Implant: Analysis of the Frequency-to-Place Mismatch with the Table-Based Software OTOPLAN® and Its Influence on Hearing Performance. 人工耳蜗:使用基于表格的软件 OTOPLAN® 分析频率到位置的不匹配及其对听力表现的影响。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-01-08 DOI: 10.1159/000535693
Laura Dessard, Guillaume Gersdorff, Nicola Ivanovik, Masoud Zoca-Assadi, Peter Nopp, Séverine Camby, Philippe P Lefebvre
{"title":"Cochlear Implant: Analysis of the Frequency-to-Place Mismatch with the Table-Based Software OTOPLAN® and Its Influence on Hearing Performance.","authors":"Laura Dessard, Guillaume Gersdorff, Nicola Ivanovik, Masoud Zoca-Assadi, Peter Nopp, Séverine Camby, Philippe P Lefebvre","doi":"10.1159/000535693","DOIUrl":"10.1159/000535693","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this study was to compare the originally applied frequency allocation of cochlear implant electrodes assigned by default at the time of activation with a more recent frequency allocation that is anatomy-based by a software called OTOPLAN®. Based on a computed tomography scan of the temporal bone, this software calculates the position of each electrode in the cochlea and its corresponding tonotopic frequency. We also evaluated whether patients with a significant mismatch between these two allocations present poorer speech intelligibility.</p><p><strong>Materials and methods: </strong>Patients who underwent cochlear implantation from 2016 to 2021 at the University Hospital of Liege were included in this retrospective study. We used OTOPLAN® to calculate the tonotopic frequency allocation of each electrode according to its exact position in the cochlear duct. This anatomical frequency mapping was compared with the default frequency mapping at the time of cochlear implant activation. Finally, we compared the mismatch with the patients' auditory performance, represented by the Auditory Capacity Index (ACI).</p><p><strong>Results: </strong>Thirteen patients were included in the study. All patients had a mismatch between the two frequency maps, to a variable extent (200 Hz-1,100 Hz). Frequency shift was significantly inversely correlated with ACI and with the time needed to improve speech intelligibility.</p><p><strong>Conclusion: </strong>Our primary results show that patients with a larger mismatch between default frequency mapping and anatomically assigned frequency mapping experience poorer hearing performance and slower adaptation to a cochlear implant.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"239-245"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139405406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a Semi-Automated Approach for the Quantification of Neuronal Cells in the Spiral Ganglion of the Whole Implanted Gerbil Cochlea, Acquired by Light-Sheet Microscopy. 开发一种半自动化方法,通过光片显微镜获取整个植入沙鼠耳蜗螺旋神经节中神经细胞的数量。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-05-29 DOI: 10.1159/000539569
Philippine Toulemonde, Cyril Beck, Michaël Risoud, Pierre Emmanuel Lemesre, Meryem Tardivel, Juergen Siepmann, Christophe Vincent
{"title":"Development of a Semi-Automated Approach for the Quantification of Neuronal Cells in the Spiral Ganglion of the Whole Implanted Gerbil Cochlea, Acquired by Light-Sheet Microscopy.","authors":"Philippine Toulemonde, Cyril Beck, Michaël Risoud, Pierre Emmanuel Lemesre, Meryem Tardivel, Juergen Siepmann, Christophe Vincent","doi":"10.1159/000539569","DOIUrl":"10.1159/000539569","url":null,"abstract":"<p><strong>Introduction: </strong>Assessing cochlear implantation's impact on cell loss and preventing post-implant cochlear damage are key areas of focus for hearing preservation research. The preservation of auditory neuronal and sensory neural hearing cells has a positive impact on auditory perception after implantation. This study aimed to provide details on a semi-automated spiral ganglion neuronal cell counting method, developed using whole implanted gerbil cochlea acquisitions with light-sheet microscopy.</p><p><strong>Methods: </strong>Mongolian gerbils underwent right cochlear implantation with an electrode array whose silicone was loaded with dexamethasone or not and were euthanized 10 weeks after implantation. The cochleae were prepared according to a 29-day protocol, with the electrode array in place. Light-sheet microscopy was used for acquisition, and Imaris software was employed for three-dimensional analysis of the cochleas and semi-automatic quantification of spiral ganglion cells. The imaJ software was used for the manual quantification of these cells.</p><p><strong>Results: </strong>Six cochleae were acquired by light-sheet microscopy, allowing good identification of cells. There was no significant difference between the mean number of spiral ganglion cells obtained by manual and semi-automatic counting (p = 0.25).</p><p><strong>Conclusion: </strong>Light-sheet microscopy provided complete visualization of the spiral ganglion and cell identification. The semi-automated counting method developed using Imaris software tools proved reliable and efficient and could be applied to a larger sample to assess post-cochlear implant cell damage and the efficacy of protective drugs delivered to the inner ear.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"500-507"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141177107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Patient and Device Factors Contributing to Electrically Evoked Stapedial Reflex Thresholds in Cochlear Implanted Adults. 导致人工耳蜗植入成人电诱发镫骨反射阈值的患者和设备因素。
IF 1.6 4区 医学
Audiology and Neuro-Otology Pub Date : 2024-01-01 Epub Date: 2024-02-09 DOI: 10.1159/000535058
Brianna Chai, Mary Laing Holland, Elizabeth L Camposeo, Kaylene King, Kara C Schvartz-Leyzac
{"title":"Patient and Device Factors Contributing to Electrically Evoked Stapedial Reflex Thresholds in Cochlear Implanted Adults.","authors":"Brianna Chai, Mary Laing Holland, Elizabeth L Camposeo, Kaylene King, Kara C Schvartz-Leyzac","doi":"10.1159/000535058","DOIUrl":"10.1159/000535058","url":null,"abstract":"<p><strong>Introduction: </strong>Optimal cochlear implant (CI) outcomes are due to, at least in part, appropriate device programming. Objective measures, such as electrically evoked stapedial reflex thresholds (ESRTs), can be used to more accurately set programming levels. However, underlying factors that contribute to ESRT levels are not well understood. The objective of the current study was to analyze how demographic variables of patient sex and age, along with CI electrode location, influence ESRTs in adult CI recipients.</p><p><strong>Methods: </strong>A single institution retrospective review was performed. Electronic medical records, CI programming records, and clinic database of postoperative computerized tomography were reviewed to gather information regarding patient demographics, ESRTs, and electrode array metrics including medial-lateral distance and scalar location. Linear mixed models were constructed to determine how demographic variables and electrode position influence ESRTs recorded in 138 adult CI recipients.</p><p><strong>Results: </strong>ESRTs were significantly affected by recipient age, with older listeners demonstrating higher ESRT levels. On average, males had higher ESRT levels when compared to females. In a subset of the study sample, ESRT levels increased with increasing medial-lateral distance; however, there was not a statistically significant effect of electrode type (lateral/straight arrays compared to perimodiolar arrays). ESRTs were not affected by scalar location.</p><p><strong>Discussion/conclusions: </strong>The results suggest that key demographic and electrode position characteristics influence the level of ESRTs in adult CI recipients. While ESRTs are widely used to assist with CI programming, underlying factors are not well understood. The significant factors of aging and sex could be due to middle ear mechanics or neural health differences. However, further data are needed to better understand these associations.</p>","PeriodicalId":55432,"journal":{"name":"Audiology and Neuro-Otology","volume":" ","pages":"263-270"},"PeriodicalIF":1.6,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11305975/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139718058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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