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Speck I, Gundlach E, Schmidt S, Spyckermann N, Lesinski-Schiedat A, Rauch AK, Aschendorff A, Thangavelu K, Reimann K, Arndt S. Auditory capacity of the better-hearing ear in asymmetric hearing loss. Eur Arch Otorhinolaryngol 2024; 281:2303-2312. [PMID: 38006462 PMCID: PMC11024001 DOI: 10.1007/s00405-023-08342-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/06/2023] [Indexed: 11/27/2023]
Abstract
PURPOSE Our aim was to investigate the course of the hearing capacity of the better-hearing ear in single-sided deafness (SSD) and asymmetric hearing loss (AHL) over time, in a multicenter study. METHODS We included 2086 pure-tone audiograms from 323 patients with SSD and AHL from four hospitals and 156 private practice otorhinolaryngologists. We collected: age, gender, etiology, duration of deafness, treatment with CI, number and monosyllabic speech recognition, numerical rating scale (NRS) of tinnitus intensity, and the tinnitus questionnaire according to Goebel and Hiller. We compared the pure tone audiogram of the better-hearing ear in patients with SSD with age- and gender-controlled hearing thresholds from ISO 7029:2017. RESULTS First, individuals with SSD showed a significantly higher hearing threshold from 0.125 to 8 kHz in the better-hearing ear compared to the ISO 7029:2017. The duration of deafness of the poorer-hearing ear showed no relationship with the hearing threshold of the better-hearing ear. The hearing threshold was significantly higher in typically bilaterally presenting etiologies (chronic otitis media, otosclerosis, and congenital hearing loss), except for Menière's disease. Second, subjects that developed AHL did so in 5.19 ± 5.91 years and showed significant reduction in monosyllabic word and number recognition. CONCLUSIONS Individuals with SSD show significantly poorer hearing in the better-hearing ear than individuals with NH from the ISO 7029:2017. In clinical practice, we should, therefore, inform our SSD patients that their disease is accompanied by a reduced hearing capacity on the contralateral side, especially in certain etiologies.
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Affiliation(s)
- Iva Speck
- Department of Otorhinolaryngology - Head and Neck Surgery, Medical Center, Faculty of Medicine, University of Freiburg, Killianstr. 5, 79110, Freiburg, Germany.
| | - Elisabeth Gundlach
- Department of Otorhinolaryngology - Head and Neck Surgery, Medical Center, Faculty of Medicine, University of Freiburg, Killianstr. 5, 79110, Freiburg, Germany
| | - Sandra Schmidt
- Department of Oto-Rhino-Laryngology, Central Army Hospital Koblenz, Ruebenacher Str. 170, 56072, Koblenz, Germany
| | - Nadine Spyckermann
- Department of Oto-Rhino-Laryngology, Central Army Hospital Koblenz, Ruebenacher Str. 170, 56072, Koblenz, Germany
| | - Anke Lesinski-Schiedat
- Department of Otorhinolaryngology, Medical University Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Ann-Kathrin Rauch
- Department of Otorhinolaryngology - Head and Neck Surgery, Medical Center, Faculty of Medicine, University of Freiburg, Killianstr. 5, 79110, Freiburg, Germany
| | - Antje Aschendorff
- Department of Otorhinolaryngology - Head and Neck Surgery, Medical Center, Faculty of Medicine, University of Freiburg, Killianstr. 5, 79110, Freiburg, Germany
| | - Kruthika Thangavelu
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Marburg, Philipps-University Marburg, Marburg, Germany
| | - Katrin Reimann
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Marburg, Philipps-University Marburg, Marburg, Germany
| | - Susan Arndt
- Department of Otorhinolaryngology - Head and Neck Surgery, Medical Center, Faculty of Medicine, University of Freiburg, Killianstr. 5, 79110, Freiburg, Germany
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Peter N, Treyer V, Probst R, Kleinjung T. Auditory Cortical Plasticity in Patients with Single-Sided Deafness Before and After Cochlear Implantation. J Assoc Res Otolaryngol 2024; 25:79-88. [PMID: 38253897 PMCID: PMC10907329 DOI: 10.1007/s10162-024-00928-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
PURPOSE This study investigated neuroplastic changes induced by postlingual single-sided deafness (SSD) and the effects of a cochlear implantation for the deaf ear. Neural processing of acoustic signals from the normal hearing ear to the brain was studied before and after implantation using a positron emission tomography (PET)/CT scanner. METHODS Eight patients with postlingual SSD received a cochlear implant (CI) in a prospective clinical trial. Dynamic imaging was performed in a PET/CT scanner using radioactively labeled water ([15O]H2O) to localize changes in the regional cerebral blood flow (rCBF) with and without an auditory task of logatomes containing speech-like elements without meaningful context. The normal hearing ear was stimulated before implantation and after the use of the cochlear implant for at least 8 months (mean 13.5, range 8.1-26.6). Eight age- and gender-matched subjects with normal hearing on both sides served as healthy control subjects (HCS). RESULTS When the normal hearing ear of SSD patients was stimulated before CI implantation, the [15O]H2O-PET showed a more symmetrical rCBF in the auditory regions of both hemispheres in comparison to the HCS. The use of CI increased the asymmetry index (AI) in six of eight patients indicating an increase of activity of the contralateral hemisphere. Non-parametric statistics revealed a significant difference in the AI between patients before CI implantation and HCS (p < .01), which disappeared after CI implantation (p = .195). CONCLUSION The functional neuroimaging data showed a tendency towards normalization of neuronal activity after CI implantation, which supports the effectiveness of CI in SSD patients. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01749592, December 13, 2012.
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Affiliation(s)
- Nicole Peter
- Department of Otorhinolaryngology, Head & Neck Surgery, University Hospital Zurich, University of Zurich, Rämistrasse 100, CH-8091, Zurich, Switzerland.
| | - Valerie Treyer
- Department of Nuclear Medicine, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Institute for Regenerative Medicine, University of Zurich, Zurich, Switzerland
| | - Rudolf Probst
- Department of Otorhinolaryngology, Head & Neck Surgery, University Hospital Zurich, University of Zurich, Rämistrasse 100, CH-8091, Zurich, Switzerland
| | - Tobias Kleinjung
- Department of Otorhinolaryngology, Head & Neck Surgery, University Hospital Zurich, University of Zurich, Rämistrasse 100, CH-8091, Zurich, Switzerland
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Leaver AM. Perceptual and cognitive effects of focal tDCS of auditory cortex in tinnitus. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.31.24302093. [PMID: 38352362 PMCID: PMC10863023 DOI: 10.1101/2024.01.31.24302093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/19/2024]
Abstract
OBJECTIVES Noninvasive brain stimulation continues to grow as an effective, low-risk way of improving the symptoms of brain conditions. Transcranial direct current stimulation (tDCS) is particularly well-tolerated, with benefits including low cost and potential portability. Nevertheless, continued study of perceptual and cognitive side effects is warranted, given the complexity of functional brain organization. This paper describes the results of a brief battery of tablet-based tasks used in a recent pilot study of auditory-cortex tDCS in people with chronic tinnitus. METHODS Volunteers with chronic tinnitus (n=20) completed two hearing tasks (pure-tone thresholds, Words In Noise) and two cognitive tasks (Flanker, Dimension Change Card Sort) from the NIH Toolbox. Volunteers were randomized to active or sham 4×1 Ag/AgCl tDCS of auditory cortex, and tasks were completed immediately before and after the first tDCS session, and after the fifth/final tDCS session. Statistics included linear mixed-effects models for change in task performance over time. RESULTS Before tDCS, performance on both auditory tasks was highly correlated with clinical audiometry, supporting the external validity of these measures (r2>0.89 for all). Although overall auditory task performance did not change after active or sham tDCS, detection of right-ear Words in Noise stimuli modestly improved after five active tDCS sessions (t(34)=-2.07, p=0.05). On cognitive tasks, reaction times were quicker after sham tDCS, reflecting expected practice effects (e.g., t(88)=3.22, p=0.002 after 5 sessions on Flanker task). However, reaction times did not improve over repeated sessions in the active group, suggesting that tDCS interfered with learning these practice effects. CONCLUSIONS Repeated sessions of auditory-cortex tDCS does not appear to adversely affect hearing or cognition, but may modestly improve hearing in noisy environments and interfere with some types of motor learning. Low-burden cognitive/perceptual test batteries could be a powerful way to identify adverse effects and new treatment targets in brain stimulation research.
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Affiliation(s)
- Amber M. Leaver
- Department of Radiology, Northwestern University, Chicago, IL, USA
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Weglage A, Müller V, Layer N, Abdel-Latif KHA, Lang-Roth R, Walger M, Sandmann P. Side-of-Implantation Effect on Functional Asymmetry in the Auditory Cortex of Single-Sided Deaf Cochlear-Implant Users. Brain Topogr 2022; 35:431-452. [PMID: 35668310 PMCID: PMC9334411 DOI: 10.1007/s10548-022-00902-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 05/10/2022] [Indexed: 11/25/2022]
Abstract
Cochlear implants (CIs) allow to restore the hearing function in profoundly deaf individuals. Due to the degradation of the stimulus by CI signal processing, implanted individuals with single-sided deafness (SSD) have the specific challenge that the input highly differs between their ears. The present study compared normal-hearing (NH) listeners (N = 10) and left- and right-ear implanted SSD CI users (N = 10 left, N = 9 right), to evaluate cortical speech processing between CI- and NH-ears and to explore for side-of-implantation effects. The participants performed a two-deviant oddball task, separately with the left and the right ear. Auditory event-related potentials (ERPs) in response to syllables were compared between proficient and non-proficient CI users, as well as between CI and NH ears. The effect of the side of implantation was analysed on the sensor and the source level. CI proficiency could be distinguished based on the ERP amplitudes of the N1 and the P3b. Moreover, syllable processing via the CI ear, when compared to the NH ear, resulted in attenuated and delayed ERPs. In addition, the left-ear implanted SSD CI users revealed an enhanced functional asymmetry in the auditory cortex than right-ear implanted SSD CI users, regardless of whether the syllables were perceived via the CI or the NH ear. Our findings reveal that speech-discrimination proficiency in SSD CI users can be assessed by N1 and P3b ERPs. The results contribute to a better understanding of the rehabilitation success in SSD CI users by showing that cortical speech processing in SSD CI users is affected by CI-related stimulus degradation and experience-related functional changes in the auditory cortex.
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Affiliation(s)
- Anna Weglage
- Faculty of Medicine and University Hospital Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, University of Cologne, Cologne, Germany.
| | - Verena Müller
- Faculty of Medicine and University Hospital Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, University of Cologne, Cologne, Germany
| | - Natalie Layer
- Faculty of Medicine and University Hospital Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, University of Cologne, Cologne, Germany
| | - Khaled H A Abdel-Latif
- Jean-Uhrmacher-Institute for Clinical ENT Research, University of Cologne, Cologne, Germany
| | - Ruth Lang-Roth
- Faculty of Medicine and University Hospital Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, University of Cologne, Cologne, Germany
| | - Martin Walger
- Faculty of Medicine and University Hospital Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, University of Cologne, Cologne, Germany.,Jean-Uhrmacher-Institute for Clinical ENT Research, University of Cologne, Cologne, Germany
| | - Pascale Sandmann
- Faculty of Medicine and University Hospital Cologne, Department of Otorhinolaryngology, Head and Neck Surgery, Audiology and Pediatric Audiology, Cochlear Implant Center, University of Cologne, Cologne, Germany
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Moulin A. Ear Asymmetry and Contextual Influences on Speech Perception in Hearing-Impaired Patients. Front Neurosci 2022; 16:801699. [PMID: 35368258 PMCID: PMC8974937 DOI: 10.3389/fnins.2022.801699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
The left hemisphere preference for verbal stimuli is well known, with a right ear (RE) advantage obtained when competing verbal stimuli are presented simultaneously, at comfortable intensities, to both ears. Speech perception involves not only the processing of acoustic peripheral information but also top–down contextual influences, filling the gaps in the incoming information that is particularly degraded in hearing-impaired individuals. This study aimed to analyze the potential asymmetry of those contextual influences on a simple speech perception task in hearing-impaired patients in light of hemispheric asymmetry. Contextual influences on disyllabic word perception scores of 60 hearing-impaired patients were compared between left ear (LE) and RE, in a balanced design, involving two repetitions of the same task. Results showed a significantly greater contextual influence on the RE versus the LE and, for the second repetition versus the first one, without any interaction between the two. Furthermore, the difference in contextual influences between RE and LE increased significantly with the RE advantage measured by a dichotic listening test in the absence of any significant correlation with hearing threshold asymmetry. Lastly, the contextual influence asymmetry decreased significantly as age increased, which was mainly due to a greater increase, with age, of contextual influences on the LE versus the RE. Those results agree with the literature reporting a relative right-shift of hemispheric asymmetry observed with age in speech in noise perception tasks in normal hearing subjects and the clinical reports of generally better audiometric speech scores obtained in RE versus LE.
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Cecilia Dos Santos Marques M, Griz S, Lira de Andrade KC, de Lemos Menezes P, Menezes DC. Frequency Following Responses in childhood apraxia of speech. Int J Pediatr Otorhinolaryngol 2021; 145:110742. [PMID: 33933988 DOI: 10.1016/j.ijporl.2021.110742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 04/17/2021] [Accepted: 04/24/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE to compare the Frequency Following Responses of children with childhood apraxia of speech with typical development children. METHOD this is an observational cross-sectional analytical study approved by Human Research Ethics Committee. Thirty normal hearing children have participated in the study. THEY WERE DIVIDED INTO TWO GROUPS 1) study group - composed by 15 children diagnosed with childhood apraxia of speech (between the chronological ages of 3 and 11 years, mean age of 5,7 years); and 2) control group: composed by 15 children with typical development, paired by age and gender with study group. Frequency Following Response were recorded using the/da/syllable presentation rate at 10.9 ms. RESULTS there was a significant delay in latencies of waves V, A and C of children with apraxia of speech, suggesting difficulties in the ability to process sounds. CONCLUSION The delay on Frequency Following Response's latencies (waves V, A and C) in children with apraxia of speech maybe related to atypical neural coding of speech sounds, suggesting that apraxia of speech must not be purely considered as a motor speech disorder.
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Affiliation(s)
| | | | - Kelly Cristina Lira de Andrade
- Department of Audiology, State University of Health Sciences of Alagoas, Brazil; Department of Medicine, Cesmac University Center, Brazil.
| | - Pedro de Lemos Menezes
- Federal University of Pernambuco, Brazil; Department of Medicine, Cesmac University Center, Brazil.
| | - Denise Costa Menezes
- Department of Audiology, State University of Health Sciences of Alagoas, Brazil.
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Epprecht L, Qureshi A, Kozin ED, Vachicouras N, Huber AM, Kikinis R, Makris N, Brown MC, Reinshagen KL, Lee DJ. Human Cochlear Nucleus on 7 Tesla Diffusion Tensor Imaging: Insights Into Micro-anatomy and Function for Auditory Brainstem Implant Surgery. Otol Neurotol 2020; 41:e484-e493. [PMID: 32176138 PMCID: PMC7392811 DOI: 10.1097/mao.0000000000002565] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The cochlear nucleus (CN) is the target of the auditory brainstem implant (ABI). Most ABI candidates have Neurofibromatosis Type 2 (NF2) and distorted brainstem anatomy from bilateral vestibular schwannomas. The CN is difficult to characterize as routine structural MRI does not resolve detailed anatomy. We hypothesize that diffusion tensor imaging (DTI) enables both in vivo localization and quantitative measurements of CN morphology. STUDY DESIGN We analyzed 7 Tesla (T) DTI images of 100 subjects (200 CN) and relevant anatomic structures using an MRI brainstem atlas with submillimetric (50 μm) resolution. SETTING Tertiary referral center. PATIENTS Young healthy normal hearing adults. INTERVENTION Diagnostic. MAIN OUTCOME MEASURES Diffusion scalar measures such as fractional anisotropy (FA), mean diffusivity (MD), mode of anisotropy (Mode), principal eigenvectors of the CN, and the adjacent inferior cerebellar peduncle (ICP). RESULTS The CN had a lamellar structure and ventral-dorsal fiber orientation and could be localized lateral to the inferior cerebellar peduncle (ICP). This fiber orientation was orthogonal to tracts of the adjacent ICP where the fibers run mainly caudal-rostrally. The CN had lower FA compared to the medial aspect of the ICP (0.44 ± 0.09 vs. 0.64 ± 0.08, p < 0.001). CONCLUSIONS 7T DTI enables characterization of human CN morphology and neuronal substructure. An ABI array insertion vector directed more caudally would better correspond to the main fiber axis of CN. State-of-the-art DTI has implications for ABI preoperative planning and future image guidance-assisted placement of the electrode array.
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Affiliation(s)
- Lorenz Epprecht
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear
- Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts, USA
| | - Ahad Qureshi
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear
- Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts, USA
| | - Elliott D Kozin
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear
- Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts, USA
| | - Nicolas Vachicouras
- Bertarelli Foundation Chair in Neuroprosthetic Technology, Laboratory for Soft, Bioelectronic Interfaces, Institute of Microengineering, Institute of Bioengineering, Centre for Neuroprosthetics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Alexander M Huber
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital of Zurich, Zurich, Switzerland
| | - Ron Kikinis
- Surgical Planning Laboratory, Harvard Medical School, Boston, Massachusetts, USA
- Fraunhofer Institut for Medical Image Computing, University of Bremen, Bremen, Germany
| | - Nikos Makris
- Surgical Planning Laboratory, Harvard Medical School, Boston, Massachusetts, USA
- MGH Morphometric Analysis Center, Harvard Medical School
| | - M Christian Brown
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear
- Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts, USA
| | - Katherine L Reinshagen
- Department of Radiology, Massachusetts Eye and Ear Infirmary and Harvard Medical School, Boston, Massachusetts, USA
| | - Daniel J Lee
- Eaton-Peabody Laboratories, Massachusetts Eye and Ear
- Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts, USA
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Wang D, Zhang H, Ma H, Zhang L, Yang L, Xu L. Hearing threshold levels and hearing loss among people in Zhejiang, China: a population-based cross-sectional study. BMJ Open 2019; 9:e027152. [PMID: 30948611 PMCID: PMC6500382 DOI: 10.1136/bmjopen-2018-027152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
UNLABELLED Hearing loss (≥26 dB threshold in the better ear), as a common chronic condition in humans, is increasingly gaining attention. Relevant research in China is relatively scarce, so we conduct a population-based study to investigate the prevalence of hearing loss among age groups, genders and ears in Zhejiang province, China, from September 2016 to June 2018. STUDY DESIGN Population-based cross-sectional study PARTICIPANTS: A total of 3754 participants aged 18-98 years and living in Zhejiang province, China. OUTCOME MEASURES Pure-tone audiometric thresholds were measured at frequencies of 0.125-8 kHz for each subject. All participants were asked to complete a structured questionnaire, in the presence of a healthcare official. RESULTS The prevalence of speech-frequency and high-frequency hearing loss was 27.9% and 42.9%, respectively, in Zhejiang. There were significant differences in auditory thresholds at most frequencies among the age groups, genders (male vs female: 31.6%vs24.1% at speech frequency; 48.9% vs 36.8% at high frequency) and ears. In addition to the common factors affecting both types of hearing loss, a significant correlation was found between personal income and speech-frequency hearing loss (OR=0.69, 95% CI 0.52 to 0.92), and between hyperlipidaemia and high-frequency hearing loss (OR=1.45, 95% CI 1.02 to 2.07). CONCLUSION The prevalence of hearing loss was high among people living in Zhejiang, particularly males, and in the left ear. Moreover, hearing thresholds increased with age. Several lifestyle and environment factors, which can be influenced by awareness and education, were significantly associated with hearing loss.
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Affiliation(s)
- Dahui Wang
- The Medical School, Hangzhou Normal University, Hangzhou, China
| | - Huai Zhang
- The Medical School, Hangzhou Normal University, Hangzhou, China
| | - Haiyan Ma
- The Medical School, Hangzhou Normal University, Hangzhou, China
| | - Long Zhang
- The Medical School, Hangzhou Normal University, Hangzhou, China
| | - Lei Yang
- The Medical School, Hangzhou Normal University, Hangzhou, China
| | - Liangwen Xu
- The Medical School, Hangzhou Normal University, Hangzhou, China
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Bonne NX, Risoud M, Hoa M, Lemesre PE, Aboukais R, Le Rhun E, Dubrulle F, Baroncini M, Lejeune JP, Vincent C. Hearing Response Following Internal Auditory Canal Decompression in Neurofibromatosis Type 2. Neurosurgery 2019; 85:E560-E567. [DOI: 10.1093/neuros/nyz057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 02/27/2019] [Indexed: 12/28/2022] Open
Abstract
AbstractBACKGROUNDHearing response following an osteodural decompression of the internal auditory canal (IAC) is controversial.OBJECTIVETo evaluate the course of auditory brainstem responses (ABRs) and the early hearing response during the first year following IAC decompression for small to medium-sized vestibular schwannomas occurring in neurofibromatosis type 2 (NF2).METHODSRetrospective chart review of middle fossa craniotomy for IAC osteodural decompression in NF2-related vestibular schwannomas.RESULTSTwelve NF2 patients were operated on from 2011 to 2016 for IAC decompression. All had NF2 according to the Manchester criteria. All had a progressive change of their ABRs documented from the diagnosis of NF2 over a mean period of 6.25 [0.36;10.9] yr. Treatment was proposed to stop hearing progression based on the speech discrimination scores (SDSs; n = 4) or for hearing maintenance (n = 8). In patients with prior hearing progression, hearing responses were observed in 3 of the 4 patients during the first year. One patient kept on progressing. In the hearing maintenance group, the SDSs remained stable. SDSs improved from 85% [20-100] to 92.5% [60-100] on average (n = 12) and from 55% [20-80] to 77.5% [50-100] in the hearing progression group (n = 4). ABRs improved in 4 patients following decompression.CONCLUSIONIAC decompression allows early objective hearing responses in select patients. We suggest that the procedure should be offered to patients with hearing progression based on their SDSs and/or associated progressive increases in their wave III and V latencies on ABRs.
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Affiliation(s)
- Nicolas-Xavier Bonne
- CHU Lille, Otologie et Otoneurologie, Université de Lille, Inserm U1008, Controlled Drug Delivery Systems and Biomaterials, Lille, France
- Université de Lille, Inserm U1192, Protéomique Réponse Inflamatoire Spectrométrie de Masse, PRISM, Lille, France
| | - Michaël Risoud
- CHU Lille, Otologie et Otoneurologie, Université de Lille, Inserm U1008, Controlled Drug Delivery Systems and Biomaterials, Lille, France
| | - Michael Hoa
- Department of Otolaryngology, Georgetown University Hospital, NC, Washington, District of Columbia
| | - Pierre-Emmanuel Lemesre
- CHU Lille, Otologie et Otoneurologie, Université de Lille, Inserm U1008, Controlled Drug Delivery Systems and Biomaterials, Lille, France
| | - Rabih Aboukais
- CHU Lille, Department of General and Stereotaxic Neurosurgery, Lille, France
| | - Emilie Le Rhun
- Université de Lille, Inserm U1192, Protéomique Réponse Inflamatoire Spectrométrie de Masse, PRISM, Lille, France
- CHU Lille, Department of General and Stereotaxic Neurosurgery, Lille, France
| | | | - Marc Baroncini
- CHU Lille, Department of General and Stereotaxic Neurosurgery, Lille, France
| | - Jean-Paul Lejeune
- CHU Lille, Department of General and Stereotaxic Neurosurgery, Lille, France
| | - Christophe Vincent
- CHU Lille, Otologie et Otoneurologie, Université de Lille, Inserm U1008, Controlled Drug Delivery Systems and Biomaterials, Lille, France
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