Spatial release from masking and sound localization using real-time sensorineural hearing loss and cochlear implant simulation

2019 ◽  
Vol 145 (3) ◽  
pp. 1877-1877
Author(s):  
Hannah M. Wright ◽  
Wesley Bulla ◽  
Eric W. Tarr
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Real Time ◽  
Sound Localization ◽  
Sensorineural Hearing ◽  
Spatial Release ◽  
Release From Masking

Enlarged Vestibular Aqueduct in Pediatric SNHL

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P104-P104
Author(s):  
Karuna Dewan ◽  
Judith C. Lieu
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Temporal Bone ◽  
Pediatric Population ◽  
Sensorineural Hearing ◽  
Enlarged Vestibular Aqueduct ◽  
Vestibular Aqueduct ◽  
Current Estimation ◽  
Temporal Bone Ct

Problem Current diagnostic criteria for enlarged vestibular aqueduct (EVA), >1.5mm at the midpoint, was determined in the pre-CT era by Valvassori. Recent research, based on 73 CTs from children with no sensorineural hearing loss (SNHL), suggests new criteria for the diagnosis of EVA—midpoint of >0.9mm or operculum >1.9mm. We evaluated the proposed new radiographic, Cincinnati criteria for the diagnosis of EVA. Methods In a retrospective cohort study, we reviewed temporal bone CT scans of 130 pediatric cochlear implant recipients to measure the vestibular aqueduct midpoint and opercular width and 5 other temporal bone dimensions. Results The Cincinnati criteria identified 44% of patients with EVA versus 16% with the Valvassori criterion (P < 0.01). Of those with EVA, 45% were unilateral and 55% were bilateral using Cincinnati criteria; 64% were unilateral and 36% bilateral using Valvassori criterion (P<0.01). Right and left side measurements of vestibular aqueduct operculum (r=0.67, P<0.01) and midpoint (r=0.58, P<0.01) correlated substantially. The Cincinnati criteria diagnosed 70 ears with EVA classified as normal using the Valvassori criterion (P<0.01). Of these 70 ears, 59 had no other medical explanation for their hearing loss. Conclusion The Cincinnati criteria identified a large percentage of pediatric cochlear implant patients with EVA who otherwise had no known etiology for their deafness. Significant correlations between right and left side measurements suggest that EVA may not be morphologically asymmetric as previously thought. Significance The Cincinnati criteria potentially alters the current estimation of the most common etiologies of bilateral severe-to-profound sensorineural hearing loss in the pediatric population. Support KD is a Doris Duke Clinical Research Fellow, supported by the Doris Duke Foundation.

scholarly journals TIGA KASUS IMPLAN KOKLEA PADA DISPLASIA MONDINI

2019 ◽  
Vol 8 (2) ◽  
pp. 59-74
Author(s):  
Muhammad Arif Sudianto Utama ◽  
◽  
Artono Artono ◽  
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Speech Development ◽  
Sensorineural Hearing ◽  
Mondini Dysplasia ◽  
First Case ◽  
Imaging Results ◽  
Cochlear Malformation ◽  
Electrode Insertion

Mondini dysplasia is a kind of cochlear malformation caused by a failure growth of cochlea in the seventh week of pregnancy, results in cochlear turn which only reaches 1,5 turn until less than 2,5 turn. There is sensorineural hearing loss in Mondini dysplasia caused by anatomical malformation. The diagnosis of Mondini dysplasia is made by accurate anamnesis, audiology assessments and imaging results. This case study explains the importance of the holistic process of diagnosis and treatment of Mondini's dysplasia. Purpose: To explain that Mondini dysplasia should be diagnosed immediately and given the cochlear implant. Cases: There had been reported three cases of cochlear malformation of Mondini dysplasi type. They were first diagnosed with sensorineural hearing loss and speech delay in the age of 2-4 years. After had been done sequence of audiology assessments and imaging CT-scan and MRI simultaneously there were obtained that those three patients had Mondini dysplasia. Case Management: The use of hearing aid in those three patients had no effectiveness that brought them to the decision of cochlear implantation. Cochlear implant became such a great challenge even through for experienced physicians considering the scarcity of the case and the risk for complications like pelymph gusher and incorrect insertion of electrode. Cochlear implant surgeries had been done to those three patients with carefu consideration and the selection for appropriate type of electrode. On the first case there had been applied right ear cochlear implant, on the second case was bilateral, and on the third case was in the left ear. Complications of the surgeries were bleeding and perilymph gusher but they had been solved properly. Electrode insertion in all three cases had been placed correctly. Conclusion: Found three cases of Mondini dysplasia with symptoms of bilateral hearing loss, speech development, bilateral Mondini dysplasia, techniques and complications of cochlear implants. These three cases differ in the shape, width and size of the cochlear anatomy if they are studied more specifically. Two cases of unilateral cochlear implant placement and one bilateral case.

Subdural haematoma: a complication of cochlear implantation

2004 ◽  
Vol 118 (12) ◽  
pp. 980-982 ◽  
Author(s):  
V.S. Sunkaraneni ◽  
A. Banerjee ◽  
R.F. Gray
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Cochlear Implants ◽  
Cochlear Implantation ◽  
Subdural Haematoma ◽  
Sensorineural Hearing ◽  
Deep Well ◽  
Major Complications ◽  
Emissary Veins

Cochlear implants have transformed the treatment of sensorineural hearing loss. They have few major complications. The authors describe the case of a man fitted with a cochlear implant who suffered a postoperative subdural haematoma. The haematoma is thought to have been caused by bleeding from emissary veins opened by the drill passages used to anchor the sutures for the receiver/stimulator. The authors have abandoned tie down sutures in cochlear implants, preferring an appropriately deep well with squared-off rims, which would secure the implant in place. They have had no further complications of this nature.

scholarly journals Modeling the Effects of Sensorineural Hearing Loss on Sound Localization in the Median Plane

2016 ◽  
Vol 20 ◽  
pp. 233121651666200 ◽  
Author(s):  
Robert Baumgartner ◽  
Piotr Majdak ◽  
Bernhard Laback
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Sound Localization ◽  
Median Plane ◽  
Sensorineural Hearing

Magnetic resonance imaging versus computed tomography in pre-operative evaluation of cochlear implant candidates with congenital hearing loss

2002 ◽  
Vol 116 (10) ◽  
pp. 804-810 ◽  
Author(s):  
Levent Sennaroglu ◽  
Isil Saatci ◽  
Ayse Aralasmak ◽  
Bulent Gursel ◽  
Ergin Turan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hearing Loss ◽  
Magnetic Resonance ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Internal Auditory Canal ◽  
Cochlear Nerve ◽  
Sensorineural Hearing ◽  
Congenital Hearing Loss ◽  
Resonance Imaging

Recent reports indicate that the cochlear nerve may be absent in some cases of congenital sensorineural hearing loss. The aim of this prospective study was to determine the incidence of cochlear nerve anomaly in cochlear implant candidates with congenital hearing loss using magnetic resonance imaging (MRI). Twenty-seven patients with congenital profound bilateral sensorineural hearing loss who were being evaluated for the cochlear implant procedure were studied.These patients had high-resolution computerized tomography (CT), through the petrous bone in axial sections. MRI examinations consisted of T1 and turbo spin echo (TSE) T2-weighted 3 mm axial images, and additional 3D Fourier Transform T2-weighted TSE sequences obtained on three different planes (axial, perpendicular and parallel to the internal auditory canal (IAC) i.e. oblique sagittal and coronal, respectively) for the purpose of cochlear nerve demonstration. Results showed that all of the 14 patients with normal CT of the temporal bone, had four distinct nerves in the distal part of the IAC on TSE-MRI. Thirteen patients demonstrated various bony malformations of the cochleovestibular system on CT. MRI revealed the absence of the cochleovestibular nerve in four patients where the IAC was very narrow or completely absent on CT. One patient with severe Mondini malformation who had an enlarged IAC demonstrated an isolated absent cochlear nerve.

Detection of human cytomegalovirus DNA in perilymph of patients with sensorineural hearing loss using real-time PCR

2002 ◽  
Vol 69 (1) ◽  
pp. 72-75 ◽  
Author(s):  
Saiko Sugiura ◽  
Tetsushi Yoshikawa ◽  
Yukihiro Nishiyama ◽  
Yoshihiro Morishita ◽  
Eisuke Sato ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Real Time ◽  
Human Cytomegalovirus ◽  
Real Time Pcr ◽  
Sensorineural Hearing

Pediatric Bilateral Sensorineural Hearing Loss: Minimum Test Battery and Referral Criteria for Cochlear Implant Candidacy Evaluation

2021 ◽  
pp. 019459982110273
Author(s):  
Samantha Anne ◽  
Kevin D. Brown ◽  
Donald M. Goldberg ◽  
Oliver F. Adunka ◽  
Margaret Kenna ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Language Development ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Hearing Aids ◽  
Early Years ◽  
Sensorineural Hearing ◽  
Speech And Language ◽  
Bilateral Sensorineural Hearing Loss ◽  
Speech And Language Development

Among the various cochlear implant systems approved by the Food and Drug Administration, current labeling for pediatric usage encompasses (1) bilateral profound bilateral sensorineural hearing loss in children aged 9 to 24 months and bilateral severe to profound sensorineural hearing loss in children older than 2 years; (2) use of appropriately fitted hearing aids for 3 months (this can be waived if there is evidence of ossification); and (3) demonstration of limited progress with auditory, speech, and language development. Pediatric guidelines require children to have significantly worse speech understanding before qualifying for cochlear implantation. The early years of life have been shown to be critical for speech and language development, and auditory deprivation is especially detrimental during this crucial time. Level of evidence: 2.

scholarly journals Prevalence & features of inner ear malformations among children with congenital sensorineural hearing loss: A Public Cochlear Implant Centre Experience

2020 ◽  
Vol 36 (7) ◽  
Author(s):  
Jawwad Ahmed ◽  
Ghulam Saqulain ◽  
Muhammad Iqbal javed Khan ◽  
Mobeen Kausar
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Inner Ear ◽  
Demographic Data ◽  
Sensorineural Hearing ◽  
Profound Hearing Loss ◽  
Creative Commons ◽  
Inner Ear Malformations ◽  
Ear Malformations

Objective: To determine the prevalence and features of inner ear anomalies in children with congenital profound hearing loss who presented at our cochlear implant center based on imaging studies. Methods: This retrospective study reviewed charts of children with congenital SNHL, who presented to Department of Otolaryngology & Auditory Implant Centre, Capital Hospital Islamabad over a period of 2 years from 1st May 2017 to 30th April 2019. These included 481 cases of both genders aged between 1 to 12 years. After gathering demographic data, audiological data, computed tomography findings of the temporal bone were analyzed. Data was analyzed using SPSS 22. Results: The Inner Ear Malformations were identified in 48(10%) children including 28 (58.33%) males and 20 (41.67%) female. Most 20(41.67%) presented at >3-5 years of age followed by 19(39.58%) at 2-3 years. However, no significant association of gender (p=0.57, p=0.076) and age of presentation (p=0.344, p=0.697) for right and left ears was noted with inner ear malformations. The most common anomaly noted were CLA, CH-III and CH-II in decreasing order of frequency in both ears. Conclusion: The prevalence of IEM’s was found to be 48(10%). Commonest anomalies noted were CLA, CH-III and CH-II. No significant association of gender and age of presentation was noted with type of anomaly in both ears. doi: https://doi.org/10.12669/pjms.36.7.3134 How to cite this:Ahmed J, Saqulain G, Khan MIJ, Kausar M. Prevalence & features of inner ear malformations among children with congenital sensorineural hearing loss: A Public Cochlear Implant Centre Experience . Pak J Med Sci. 2020;36(7):---------.  doi: https://doi.org/10.12669/pjms.36.7.3134 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Current Perspectives in Management of Unilateral Sensorineural Hearing Loss and Single Sided Deafness

2020 ◽  
Vol I (1) ◽  
pp. 15-18
Author(s):  
Georgios K Panagiotopoulos
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Treatment Strategies ◽  
Sensorineural Hearing ◽  
Sound Sources ◽  
Binaural Summation ◽  
Listening Environments ◽  
Negative Effect ◽  
Release From Masking ◽  
Single Sided Deafness

Unilateral Sensorineural Hearing Loss (USNHL) or even Single Sided Deafness (SSD) were mistakenly believed in the past that they could not induce a notable negative effect on the average individual adult. Respectively, a child with USNHL could eventually develop typically and adequately with no particular challenges. Today, it is well established that both children and adults with USNHL and SSD experience difficulties locating sound sources than their normal peers attributable to the concomitant deprivation of data utilized for localization; interaural time differences along with interaural intensity differences, especially for high frequency sounds. Moreover, USNHL and SSD patients suffer from the absence of the binaural benefits that permit people with bilateral Normal Hearing (NH) to perform relatively well in challenging listening environments. These benefits encompass binaural summation that causes improved speech perception, and binaural release from masking that facilitates word recognition in noise. Rising treatment strategies, involving various type of amplification, Assistive Listening Devices (ALSs) and Cochlear Implantation, can greatly widen our overall approach regarding USNHL and / or SSD. Nevertheless, most recent evidence points out that both prompt and adequate intervention is crucial to promote optimal outcomes.

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