Etiology of single-sided deafness and asymmetrical hearing loss

Usami, Shin Ichi; Kitoh, Ryosuke; Moteki, Hideaki; Nishio, Shin‐ya; Kitano, Tomohiro; Kobayashi, Masafumi; Shinagawa, Jun; Yokota, Yoh; Sugiyama, Kenjiro; Watanabe, Kizuki

doi:10.1080/00016489.2017.1300321

Cited by 72 publications

(70 citation statements)

References 19 publications

(26 reference statements)

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“…These were also the leading three findings reported in previous publications, however the reported rate of each finding was variable . Masuda et al also reported cochlear nerve deficiency as the most frequent finding in 69 children with unilateral hearing loss, as was described by Usami et al in a mixed group of over 500 children and adults . However, cochlear dysplasia was the most common finding in two larger series and EVA was the most common finding in another recent report .…”

Section: Discussionmentioning

confidence: 51%

“…5,6,8,9,12 Masuda et al also reported cochlear nerve deficiency as the most frequent finding in 69 children with unilateral hearing loss, as was described by Usami et al in a mixed group of over 500 children and adults. 5,13 However, cochlear dysplasia was the most common finding in two larger series and EVA was the most common finding in another recent report. 6,8,9 We postulate that this too may be related to the severity of hearing loss.…”

Section: Discussionmentioning

confidence: 91%

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Imaging findings in pediatric single‐sided deafness and asymmetric hearing loss

et al. 2019

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Objective To examine the imaging findings on computer tomography (CT) and magnetic resonance imaging (MRI) in pediatric single‐sided deafness (SSD) and asymmetric hearing loss (ASH). Methods The medical records of 189 pediatric patients with SSD and ASH were retrospectively reviewed, and imaging findings were compared. SSD was defined as unilateral profound hearing loss and contralateral normal hearing ear. In the ASH group, ASHw was defined as the worse hearing ear with profound hearing loss, while ASHb was defined as the better hearing ear with mild‐moderate hearing loss. Results There were 170 patients with SSD and 19 patients with ASH. In the SSD group, 83 patients (48.8%) had imaging findings associated with hearing loss. In the ASH group, such imaging findings were found in six (31.6%) of the ASHw and in five (26.3%) of the ASHb ears. The most common finding in the SSD group was cochlear nerve deficiency (50.6%), followed by cochlear dysplasia (39.8%) and enlarged vestibular aqueduct (26.5%). In the ASH groups, cochlear dysplasia was seen in three (50%) of ASHw ears and in two (40%) of the ASHb ears, and enlarged vestibular aqueduct was seen in three (50%) of ASHw ears and in two (40%) of the ASHb ears. Conclusion Imaging studies identified the etiology in half of the cases of SSD and in one‐third of ASH patients. Our findings strongly support the use of imaging studies in the evaluation of pediatric SSD and ASH. Level of Evidence 4 Laryngoscope, 130:1007–1010, 2020

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 91%

Imaging findings in pediatric single‐sided deafness and asymmetric hearing loss

et al. 2019

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“…reported a 43 per cent prevalence of cochlear nerve deficiency in paediatric patients who underwent computed tomography and/or magnetic resonance imaging (MRI) to investigate severe-to-profound unilateral hearing loss. 3 In that series, the second most common cause of hearing loss was cytomegalovirus infection, diagnosed by polymerase chain reaction of umbilical blood in 13 per cent of cases. 3 Clemmens et al .…”

Section: Introductionmentioning

confidence: 95%

Cochlear nerve anomalies in paediatric single-sided deafness – prevalence and implications for cochlear implantation strategies

2020

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ObjectiveTo determine the prevalence of cochlear nerve anomalies on magnetic resonance imaging in patients with unilateral or bilateral sensorineural hearing loss.MethodsA retrospective case series was conducted at a tertiary referral centre. The inclusion criteria were paediatric patients with bilateral or unilateral sensorineural hearing loss, investigated with magnetic resonance imaging. The primary outcome measure was the rate of cochlear nerve hypoplasia or aplasia.ResultsOf the 72 patients with unilateral sensorineural hearing loss, 39 per cent (28 cases) had absent or hypoplastic cochlear nerves on the affected side. Fifteen per cent (11 cases) had other abnormal findings on magnetic resonance imaging. Eighty-four patients had bilateral sensorineural hearing loss, of which cochlear nerve hypoplasia or aplasia was identified only in 5 per cent (four cases). Other abnormal findings were identified in 14 per cent (12 cases).ConclusionPaediatric patients with unilateral sensorineural hearing loss are more likely to have cochlear nerve anomalies than those patients with bilateral sensorineural hearing loss. This has important implications regarding cochlear implantation for patients with single-sided deafness.

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“…In children, SSD may also result from cochlear nerve deficit, mumps, or other viral infections and anomalies of the inner ear. [9][10][11] Other causes of SSD are very rare.…”

Section: Introductionmentioning

confidence: 99%

Multifactorial positive influence of cochlear implantation on patients with single‐sided deafness

et al. 2019

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Objectives Single‐sided deafness (SSD) is an extreme case with profound unilateral hearing loss in the poorer ear and regular hearing in the other ear. The aim of this study is to investigate the impairment in the daily life of SSD patients and the influence of cochlear implants (CI) on their health‐related quality of life (HRQoL), the impact on existing tinnitus distress and psychological comorbidities, and audiometric parameters. Methods In total, 21 patients (8 male and 13 female) were included, and the Charité Test Battery was applied for all patients. Data on HRQoL were collected with the Nijmegen Cochlear Implant Questionnaire and the Medical Outcome Study Short Form 36 (SF‐36) Survey. Tinnitus distress was assessed with the Tinnitus Questionnaire (TQ). Data with regard to psychological comorbidities were collected using four validated questionnaires. Speech perception was assessed with the Freiburg Monosyllable Test (FMS), the Oldenburg Sentence Test (OLSA), and the Oldenburg Inventory (OI). Results HRQoL improved in the subdomain social interactions. Tinnitus distress dropped significantly 6 months postoperatively. SSD patients preoperatively showed elevated levels of stress, depressive symptoms, and anxiety. Postoperatively, these psychological symptoms improved with regard to stress, tension, and demands. The audiometry tools revealed a significant improvement in directional hearing (OI), speech perception in silence, and in the speech intelligibility threshold (OLSA). Conclusion There was an improvement in HRQoL and a reduction of tinnitus and cognitive distress. The preoperatively elevated stress level decreased significantly, and psychological comorbidities such as depressive symptoms and anxiety all improved postimplantation. Level of Evidence II‐2 Laryngoscope, 130:500–506, 2020

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Etiology of single-sided deafness and asymmetrical hearing loss

Cited by 72 publications

References 19 publications

Imaging findings in pediatric single‐sided deafness and asymmetric hearing loss

Imaging findings in pediatric single‐sided deafness and asymmetric hearing loss

Cochlear nerve anomalies in paediatric single-sided deafness – prevalence and implications for cochlear implantation strategies

Multifactorial positive influence of cochlear implantation on patients with single‐sided deafness

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