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Silva AL, Stumpf IMDS, Lacroix LP, Alves DMF, Silveira ALD, Costa SSD, Rosito LPS. Language development in children from a public cochlear implant program. Braz J Otorhinolaryngol 2024; 90:101458. [PMID: 39032465 PMCID: PMC11315129 DOI: 10.1016/j.bjorl.2024.101458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 05/16/2024] [Accepted: 06/03/2024] [Indexed: 07/23/2024] Open
Abstract
OBJECTIVE To evaluate the rate of loss to follow-up in a cochlear implant program from the public health system in Southern Brazil as well as the characteristics of hearing loss, sociodemographic, sociocultural and the development of oral language in children with prelingual deafness. METHODS Retrospective cohort study with children who underwent CI surgery between 2010 and 2020. Data was collected through of interviews and review of medical records. The language development assessment was performed using the MUSS, MAIS and IT-MAIS scales. For the classification of language development, we used as parameters the values (mean ± SD) found in a previous national study. From those values, the Z-score for each patient at each hearing age (time of experience with the cochlear implant) was calculated. RESULTS Of the 225 children implanted between 2010-2020, 129 were included in this study. The rate of loss to follow-up in the program was 42.6%. The mean age at first surgery was 40.5 (±16.9) months, with 77.5% of patients having received a unilateral implant. Language results below the expected for hearing age ( CONCLUSIONS Most patients had an elevated mean age at cochlear implantation and there was a high rate of loss to follow-up and low attendance to speech and programming sessions. An overall poor language performance was found for this pediatric cochlear implant program from the public health system in Southern Brazil. LEVEL OF EVIDENCE Level 3 (Non-randomized cohort study).
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Affiliation(s)
- Alice Lang Silva
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil.
| | | | - Laura Prolla Lacroix
- Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Porto Alegre, RS, Brazil
| | | | | | - Sady Selaimen da Costa
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Otorrinolaringologia, Porto Alegre, RS, Brazil
| | - Letícia Petersen Schmidt Rosito
- Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Otorrinolaringologia, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Porto Alegre, RS, Brazil
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Hemmingsen D, Moster D, Engdahl B, Klingenberg C. Hearing impairment after asphyxia and neonatal encephalopathy: a Norwegian population-based study. Eur J Pediatr 2024; 183:1163-1172. [PMID: 37991501 PMCID: PMC10950958 DOI: 10.1007/s00431-023-05321-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/25/2023] [Accepted: 10/28/2023] [Indexed: 11/23/2023]
Abstract
The purpose of this study is to evaluate the association between perinatal asphyxia, neonatal encephalopathy, and childhood hearing impairment. This is a population-based study including all Norwegian infants born ≥ 36 weeks gestation between 1999 and 2014 and alive at 2 years (n = 866,232). Data was linked from five national health registries with follow-up through 2019. Perinatal asphyxia was defined as need for neonatal intensive care unit (NICU) admission and an Apgar 5-min score of 4-6 (moderate) or 0-3 (severe). We coined infants with seizures and an Apgar 5-min score < 7 as neonatal encephalopathy with seizures. Infants who received therapeutic hypothermia were considered to have moderate-severe hypoxic-ischemic encephalopathy (HIE). The reference group for comparisons were non-admitted infants with Apgar 5-min score ≥ 7. We used logistic regression models and present data as adjusted odds ratios (aORs) with 95% confidence intervals (CI). The aOR for hearing impairment was increased in all infants admitted to NICU: moderate asphyxia aOR 2.2 (95% CI 1.7-2.9), severe asphyxia aOR 5.2 (95% CI 3.6-7.5), neonatal encephalopathy with seizures aOR 7.0 (95% CI 2.6-19.0), and moderate-severe HIE aOR 10.7 (95% CI 5.3-22.0). However, non-admitted infants with Apgar 5-min scores < 7 did not have increased OR of hearing impairment. The aOR for hearing impairment for individual Apgar 5-min scores in NICU infants increased with decreasing Apgar scores and was 13.6 (95% CI 5.9-31.3) when the score was 0. Conclusions: An Apgar 5-min score < 7 in combination with NICU admission is an independent risk factor for hearing impairment. Children with moderate-severe HIE had the highest risk for hearing impairment. What is Known: • Perinatal asphyxia and neonatal encephalopathy are associated with an increased risk of hearing impairment. • The strength of the association, and how other co-morbidities affect the risk of hearing impairment, is poorly defined. What is New: • Among neonates admitted to a neonatal intensive care unit (NICU), decreased Apgar 5-min scores, and increased severity of neonatal encephalopathy, were associated with a gradual rise in risk of hearing impairment. • Neonates with an Apgar 5-min score 7, but without NICU admission, did not have an increased risk of hearing impairment.
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Affiliation(s)
- Dagny Hemmingsen
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital of North Norway, N-9038, Tromsø, Norway.
- Paediatric Research Group, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway.
| | - Dag Moster
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
| | - Bo Engdahl
- Department of Physical Health and Ageing, Norwegian Institute of Public Health, Oslo, Norway
| | - Claus Klingenberg
- Paediatric Research Group, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway
- Department of Paediatrics and Adolescence Medicine, University Hospital of North Norway, Tromsø, Norway
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Hou V, Tellez P, Fandiño M, Ospina J, Chia R, Bergstrom R, Riding K, Kozak J, Kozak E, Pauwels J, Kozak F. Pediatric cochlear implant explantation and reimplantation over a 32-year period. Int J Pediatr Otorhinolaryngol 2023; 166:111460. [PMID: 36764079 DOI: 10.1016/j.ijporl.2023.111460] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 01/09/2023] [Accepted: 01/21/2023] [Indexed: 01/25/2023]
Abstract
OBJECTIVES Cochlear implantation is indicated for pediatric patients with bilateral severe to profound sensorineural hearing loss. The literature reports large variability in cochlear implant (CI) device survival and rates of explantation and reimplantation. This retrospective chart review summarizes CI survival and rates of explantation and reimplantation in pediatric CI recipients at a Canadian tertiary pediatric hospital over 32 years. METHODS A retrospective chart review of all pediatric patients who received a Cochlear Corporation® CI between April 1988 and June 2020 was undertaken. Rates of explantation/reimplantation were collected and categorized based on device type and reason for failure (medical, device, and inconclusive failure). Device survival analysis based on implant model was also completed utilizing Kaplan-Meier curves. RESULTS 512 CIs were implanted over the 32-year period by four surgeons (77.1%, 18.16%, 4.49%, and 0.20%, respectively). Patient age ranged from seven months to 20.4 years. The overall explantation and reimplantation rate was 3.32% (17/512 implants), with seven as a result of device failure (1.37%), nine events of medical failure (1.76%), and one inconclusive failure (0.20%). Cumulative CI survival rates at 5, 10, 15, and 20 years were 98.15%, 96.33%, 95.53%, and 94.39%. CONCLUSION The overall institutional CI failure, explantation, and reimplantation rates are lower than the average reported rates in the literature.
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Affiliation(s)
- Vincent Hou
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada
| | - Paula Tellez
- Pontificia Universidad Xaveriana, Carrera 7 No. 40 - 62, Bogotá D.C, Colombia
| | - Marcela Fandiño
- Fundacion Cardiovasuclar de Colombia, Calle 155A No.23-58, Floridablanca, Santander, Colombia
| | - Juan Ospina
- Pontificia Universidad Xaveriana, Carrera 7 No. 40 - 62, Bogotá D.C, Colombia
| | - Ruth Chia
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada
| | - Raegan Bergstrom
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada
| | - Keith Riding
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada
| | - Jessica Kozak
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada
| | - Emelie Kozak
- University of Calgary Health Sciences Centre, 3330 Hospital Dr NW, Calgary, AB, T2N 4N1, Canada
| | - Julie Pauwels
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada
| | - Frederick Kozak
- BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada.
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Liddle K, Beswick R, Fitzgibbons EJ, Driscoll C. Aetiology of permanent childhood hearing loss at a population level. J Paediatr Child Health 2022; 58:440-447. [PMID: 34546616 DOI: 10.1111/jpc.15738] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/09/2021] [Accepted: 08/26/2021] [Indexed: 11/30/2022]
Abstract
AIM To evaluate and describe results of aetiological investigations offered to a population level cohort of babies who had confirmed permanent hearing loss after they either (i) failed universal neonatal hearing screening or (ii) passed newborn screening but were detected with a permanent hearing loss in early childhood. METHODS Descriptive analysis of results of investigations offered to neonates and young children in whom permanent hearing loss was detected as part of a statewide newborn hearing screening programme. A total of 306 285 newborns were screened between 2013 and 2017. The failed screening results were confirmed by a diagnostic audiological assessment battery. Medical evaluation for the identification of the cause of the hearing loss was performed by a paediatrician or otolaryngologist, investigations were ordered using a stepwise approach, and aetiology was assigned using a coding scheme. RESULTS Permanent hearing loss was confirmed in 967 children (0.3%). Data were available for 873. An aetiological factor was identified or presumed in 61.3% of cases. Genetic causes were present in 26.8% and structural causes were present in 24.9% of cases. Congenital cytomegalovirus was present in 4.4%. CONCLUSIONS Use of a coding scheme is feasible at a population level and allows collation of data from multiple sites and will allow outcome mapping and service planning.
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Affiliation(s)
- Karen Liddle
- Child Development Service, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Centre for Children's Health Research, University of Queensland, Brisbane, Queensland, Australia
| | - Rachael Beswick
- Healthy Hearing Program, Children's Health Queensland Hospital and Health Service, Brisbane, Queensland, Australia
| | - E Jane Fitzgibbons
- Healthy Hearing Program, Children's Health Queensland Hospital and Health Service, Brisbane, Queensland, Australia
| | - Carlie Driscoll
- School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, Queensland, Australia
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Cheeney S, Wright JN, Sie KC, Chapman T. Pearls of Temporal Bone Imaging in Children with Hearing Loss. Semin Ultrasound CT MR 2022; 43:3-18. [PMID: 35164907 DOI: 10.1053/j.sult.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hearing loss is one of the most common indications for temporal bone imaging in children. Hearing loss may be congenital or acquired, and it may be conductive, sensorineural, or mixed audiologically. Temporal bone imaging plays an important role in the assessment and management of this condition. An understanding of the embryology of ear structures better enables the radiologist to interpret abnormalities on imaging of the temporal bone. Here, we provide a general review of ear development and a description of known genetic defects that contribute to congenital ear anomalies associated with hearing loss. We provide appropriate imaging techniques for the temporal bone depending on the clinical presentation and a systematic approach to imaging for children with hearing loss. Diagnostic imaging for developmental anomalies of the ear and cholesteatoma will be discussed.
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Affiliation(s)
- Safia Cheeney
- Department of Radiology, Seattle Children's Hospital, University of Washington, Seattle, Washington
| | - Jason N Wright
- Department of Radiology, Seattle Children's Hospital, University of Washington, Seattle, Washington
| | - Kathleen C Sie
- Department of Otolaryngology, Seattle Children's Hospital, University of Washington, Seattle, Washington
| | - Teresa Chapman
- Department of Radiology, Seattle Children's Hospital, University of Washington, Seattle, Washington.
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Acke FRE, De Vriese C, Van Hoecke H, De Leenheer EMR. Twelve years of neonatal hearing screening: audiological and etiological results. Eur Arch Otorhinolaryngol 2021; 279:3371-3378. [PMID: 34463816 DOI: 10.1007/s00405-021-07060-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/24/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE Most developed countries have implemented some form of universal newborn hearing screening program. Early identification and rehabilitation of congenital hearing loss is important in functional outcome, and the need to identify the cause of hearing impairment has become clear. We aimed to evaluate audiological and etiological outcomes in a large group of patients with failed neonatal hearing screening. METHODS We performed a retrospective chart analysis of patients who were referred to our tertiary referral center after failing neonatal hearing screening during a 12-year period (2007-2019). Screening was based on automated auditory brainstem response (AABR) or a combined approach of AABR and auditory steady-state response (ASSR) with chirp stimulus. Extensive audiometric testing was performed to confirm and determine the type and degree of hearing loss. In case of permanent hearing loss, a standardized etiological protocol was followed to determine the cause. RESULTS Of the 802 referred newborns, hearing loss was confirmed by diagnostic ABR in 78%. Main causes of hearing loss included otitis media with effusion (56%, higher in patients screened by AABR/ASSR compared to AABR), a genetic disorder (12%), congenital cytomegalovirus infection (cCMV, 5%) and atresia/stenosis of the external ear canal (5%). Of the patients with permanent hearing loss, 15% showed changes in hearing loss severity over time. CONCLUSION In the majority of newborns referred after failing universal neonatal hearing screening, hearing loss could be confirmed. The leading cause was reversible hearing loss due to otitis media with effusion, but hearing loss proved permanent in about 35% of referred newborns, with genetics as predominant cause. Follow-up of congenital hearing loss patients is important as deterioration as well as improvement was observed over time.
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Affiliation(s)
- Frederic R E Acke
- Department of Otorhinolaryngology, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium.
| | - Casper De Vriese
- Department of Otorhinolaryngology, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Helen Van Hoecke
- Department of Otorhinolaryngology, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
| | - Els M R De Leenheer
- Department of Otorhinolaryngology, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Ghent, Belgium
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Wright B, Phillips H, Allgar V, Sweetman J, Hodkinson R, Hayward E, Ralph-Lewis A, Teige C, Bland M, Le Couteur A. Adapting and validating the Autism Diagnostic Interview - Revised for use with deaf children and young people. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2021; 26:446-459. [PMID: 34269085 DOI: 10.1177/13623613211029116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
LAY ABSTRACT Autism assessment processes need to improve for deaf children as they are currently being diagnosed later than their hearing counterparts and misdiagnosis can occur. We took one of the most commonly used parent developmental interviews for autism spectrum disorder the Autism Diagnostic Interview-Revised and adapted it using international expert advice. Modifications were proposed and agreed by the expert panel for 45% of items; the remaining 55% of items were unchanged. We then tested the revised version, adapted for deaf children (Autism Diagnostic Interview-Revised Deaf Adaptation), in a UK sample of 78 parents/carers of deaf children with autism spectrum disorder and 126 parents/carers with deaf children without autism spectrum disorder. When compared to National Institute for Health and Care Excellence guideline standard clinical assessments, the Autism Diagnostic Interview-Revised Deaf Adaptation diagnostic algorithm threshold scores could identify those deaf children with a definite diagnosis (true autism spectrum disorder positives) well (sensitivity of 89% (79%-96%)) and those deaf children who did not have autism spectrum disorder (true autism spectrum disorder negatives) well (specificity of 81% (70%-89%)). Our findings indicate that the Autism Diagnostic Interview-Revised Deaf Adaptation is likely to prove a useful measure for the assessment of deaf children with suspected autism spectrum disorder and that further research would be helpful.
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Affiliation(s)
- Barry Wright
- University of York, York, UK.,Leeds and York Partnership NHS Foundation Trust, UK
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Adapting and validating the Autism Diagnostic Observation Schedule Version 2 for use with deaf children and young people. J Autism Dev Disord 2021; 52:553-568. [PMID: 33761060 PMCID: PMC8813800 DOI: 10.1007/s10803-021-04931-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2021] [Indexed: 12/14/2022]
Abstract
We report a Delphi Consensus modification and first validation study of the Autism Diagnostic Observation Schedule - 2 with deaf children and young people (ADOS-2 Deaf adaptation). Validation included 122 deaf participants (aged 2-18 years), 63 with an Autism Spectrum Disorder (ASD). This was compared to a National Institute for Health and Clinical Excellence (NICE) guideline standard clinical assessment by blinded independent specialist clinicians. Results showed overall sensitivity 73% (95%CI 60%, 83%); specificity 71% (95%CI 58%, 82%), and for the more common modules 1-3 (combined as in previous studies) sensitivity 79% (95% CI 65-89%); specificity 79% (95% CI 66-89%) suggesting this instrument will be a helpful addition for use with deaf children and young people.
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Faistauer M, Lang Silva A, Félix TM, Todeschini de Souza L, Bohn R, Selaimen da Costa S, Petersen Schmidt Rosito L. Etiology of early hearing loss in Brazilian children. Braz J Otorhinolaryngol 2021; 88 Suppl 1:S33-S41. [PMID: 33839059 PMCID: PMC9734262 DOI: 10.1016/j.bjorl.2021.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 01/22/2021] [Accepted: 02/28/2021] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Hearing loss etiology depends on the population studied as well as on the ethnicity and the socio-economic condition of the analyzed region. Etiological diagnosis contributes to the improvement of preventive measures and to the early identification of this deficiency. OBJECTIVE To identify the etiological factors of hearing loss and its prevalence in a tertiary hospital in southern Brazil, to verify the frequency of mutations in GJB2 and GJB6 genes, and to correlate the degree of hearing loss with the etiological factors of deafness. METHODS This prevalence study involved 140 children with bilateral sensorineural or mixed hearing loss. Medical history, physical examination, audiometry, and evoked auditory brainstem response were conducted. Imaging and genetic examinations were also performed. RESULTS Etiologies and their prevalence were as follows: (a) indeterminate causes, 31.4%; (b) conditions related to neonatal period, 22.1%; (c) genetic, 22.1%; (d) auditory neuropathy, 10%; (e) other factors (cortical malformation, intracranial hemorrhage, and internal ear malformations), 7.9% and (f) congenital infections, 6.4%. Within the genetic cases, ten homozygous and seven heterozygotes of the 35delG mutation were identified, besides two cases of rare variants of GJB2: p.Try172* and p.Arg184Pro. One case with homozygosis of del(GJB6-D13S1830) was found. Regarding severity of hearing loss, in 78.6% of the cases the degree of hearing loss was profound and there were no significant differences when comparing between etiologies. CONCLUSION The number of indeterminate etiologies is still high and congenital CMV infection may be a possible cause of undiagnosed etiology for hearing loss. The predominance of etiologies related to neonatal conditions and infectious causes are characteristic of developing countries. The most prevalent mutation was 35delG, the main GJB2 gene, probably because of the European influence in the genotype of our population.
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Affiliation(s)
- Marina Faistauer
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre, RS, Brazil
| | - Alice Lang Silva
- Hospital de Clínicas de Porto Alegre, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Oftalmologia e Otorrinolaringologia, Porto Alegre, RS, Brazil.
| | - Têmis Maria Félix
- Hospital de Clínicas de Porto Alegre, Departamento de Genética, Porto Alegre, RS, Brazil
| | | | - Renata Bohn
- Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Porto Alegre, RS, Brazil
| | - Sady Selaimen da Costa
- Hospital de Clínicas de Porto Alegre, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Oftalmologia e Otorrinolaringologia, Porto Alegre, RS, Brazil
| | - Letícia Petersen Schmidt Rosito
- Hospital de Clínicas de Porto Alegre, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Porto Alegre, RS, Brazil; Universidade Federal do Rio Grande do Sul, Faculdade de Medicina, Departamento de Oftalmologia e Otorrinolaringologia, Porto Alegre, RS, Brazil
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Fitzgibbons EJ, Driscoll C, Myers J, Nicholls K, Beswick R. Predicting hearing loss from 10 years of universal newborn hearing screening results and risk factors. Int J Audiol 2021; 60:1030-1038. [PMID: 33593173 DOI: 10.1080/14992027.2021.1871975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE This study investigated whether demographic variables, risk factor presence or absence and universal newborn hearing screening (UNHS) results can be used to predict permanent childhood hearing loss (PCHL) in infants referred from screening. DESIGN Retrospective analysis of a UNHS database. STUDY SAMPLE Data were extracted from the state-wide UNHS database storing details of the 613,027 infants who were born in Queensland, Australia between 1 January 2007 and 31 December 2016 and participated in UNHS. This study included the 6735 children who were referred from the UNHS program for diagnostic audiology due to failing the screen in one or both ears or bypassing screening. RESULTS Factors with a significant positive association with PCHL that were incorporated into a logistic regression model were: female gender, non-indigenous status, family history of PCHL, craniofacial anomalies and syndromes associated with PCHL, and a bilateral refer result on screening. CONCLUSIONS Odds of PCHL vary among infants referred for diagnostic assessment from UNHS programs. When an infant refers on the newborn hearing screen, information about their gender, indigenous status, identified risk factors and specific screening outcome can be used to predict the likelihood of a congenital PCHL diagnosis.
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Affiliation(s)
- E Jane Fitzgibbons
- Healthy Hearing Program, Children's Health Queensland Hospital and Health Service, Brisbane, Australia
| | - Carlie Driscoll
- School of Health and Rehabilitation Services, University of Queensland, Brisbane, Australia
| | - Joshua Myers
- School of Health and Rehabilitation Services, University of Queensland, Brisbane, Australia
| | - Kelly Nicholls
- Healthy Hearing Program, Children's Health Queensland Hospital and Health Service, Brisbane, Australia
| | - Rachael Beswick
- Healthy Hearing Program, Children's Health Queensland Hospital and Health Service, Brisbane, Australia
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Byeon H. Associations between adolescents' earphone usage in noisy environments, hearing loss, and self-reported hearing problems in a nationally representative sample of South Korean middle and high school students. Medicine (Baltimore) 2021; 100:e24056. [PMID: 33546006 PMCID: PMC7837842 DOI: 10.1097/md.0000000000024056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 12/07/2020] [Indexed: 11/25/2022] Open
Abstract
Few epidemiological studies have examined the relationship between earphone usage and hearing loss in adolescents. This study identified the prevalence of hearing loss in South Korean adolescents using representative national survey data and evaluated the relationship between earphone usage in a noisy environment and hearing loss. This study analyzed 532 subjects (12-19 years) who participated in a 2012 national survey and completed health and noise environment exposure questionnaires and pure tone audiometry (PTA) test. Hearing loss was defined as an average hearing threshold of 26 Decibel-A (dBA) or higher in PTA. The relationship between earphone usage and hearing loss was analyzed using a hierarchical logistic regression model. Adolescents who were exposed to high noise levels via headphones in a noisy environment had a hearing loss prevalence of 22.6% and adolescents who used earphones 80 minutes or more per day on average had the hearing loss prevalence of 22.3%. The results of the logistic regression analysis revealed that adolescents who used earphones in a noisy environment had a 4.5-fold higher risk of hearing loss and an 8.4 times higher risk of having a subjective hearing problem than those who did not use earphones (prevalence odds ratio (pOR) = 4.54, 95% confidence interval (CI): 1.35-15.24; pOR = 8.39, 95% CI: 1.12-62.83, respectively). Additionally, adolescents who used earphones more than 80 minutes per day in a noisy environment had a 4.7 times higher risk of hearing loss than those who used them less than 80 minutes per day (pOR = 4.68, 95% CI: 1.08-20.22). Longitudinal studies are needed to provide evidence of causality between earphone usage and hearing loss.
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Hurley T, O'Dea M, Aslam S, Aly H, Robertson N, Molloy E. Melatonin treatment for newborns with hypoxic ischaemic encephalopathy. Hippokratia 2020. [DOI: 10.1002/14651858.cd013754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tim Hurley
- Department of Paediatrics; Trinity College Dublin; Dublin Ireland
| | - Mary O'Dea
- Paediatric and Child Health; Trinity College Dublin; Dublin Ireland
| | - Saima Aslam
- Neonatology; National Maternity Hospital; Dublin Ireland
| | - Hany Aly
- Neonatology; Cleveland Clinic Children’s Hospital; Cleveland OH USA
| | - Nikki Robertson
- Obstetrics and Gynaecology; University College London; London UK
| | - Eleanor Molloy
- Paediatric and Child Health; Trinity College Dublin; Dublin Ireland
- Department of Paediatrics; The National Children’s Hospital, Tallaght; Dublin Ireland
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13
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Jiang F, Kuper H, Bright T, Qin WZ. Etiology of Childhood Bilateral Sensorineural Hearing Loss in Shandong Province, China. Am J Audiol 2020; 29:236-243. [PMID: 32437266 DOI: 10.1044/2020_aja-19-00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Objectives The purpose of this study is to ascertain the etiology of bilateral sensorineural hearing loss (SNHL) in children aged ≤ 18 years living in Shandong province. Method Data were taken from a cross-sectional study, which was conducted between 2015 and 2017. The study included children aged ≤ 18 years, recruited from special schools for children with hearing loss and from hearing rehabilitation centers in Shandong province of China. Children were screened for bilateral SNHL through audiological testing. Clinical examination, genetic testing, and structured interviews were conducted for those children who were identified as having hearing loss to identify the potential cause. Results The etiology of bilateral SNHL in our sample was genetic in 874 (39.3%), acquired in 650 (29.3%), and unknown in 697 (31.4%) children. Among children with acquired SNHL, the cause was maternal viral infection in 75 (11.5%); perinatal factors in 238 (36.6%); meningitis, measles, and mumps in 146 (22.5%); and ototoxic exposure in 117 (18%) children. Among the children with genetic SNHL, only 44 (4.9%) were identified as having syndromic hearing loss, and the remainder (95.1%) were classified as nonsyndromic hearing loss. Conclusion The findings indicated that nearly 30% of bilateral SNHL in Shandong province could be preventable through immunization, early prenatal diagnosis, proper treatment of infections, and avoidance of prescription of ototoxic drugs. This finding emphasizes the need for programs aimed at improving the health services at primary and secondary levels of health care, which will in turn prevent childhood hearing loss.
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Affiliation(s)
- Fan Jiang
- School of Public Health, Shandong University, Jinan, China
| | - Hannah Kuper
- International Centre for Evidence in Disability, London School of Hygiene & Tropical Medicine, United Kingdom
| | - Tess Bright
- International Centre for Evidence in Disability, London School of Hygiene & Tropical Medicine, United Kingdom
| | - Wen-Zhe Qin
- School of Public Health, Shandong University, Jinan, China
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Increased Risk of Sensorineural Hearing Loss as a Result of Exposure to Air Pollution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061969. [PMID: 32192124 PMCID: PMC7143358 DOI: 10.3390/ijerph17061969] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/03/2020] [Accepted: 03/11/2020] [Indexed: 12/12/2022]
Abstract
Whether exposure to air pollution is associated with developing sensorineural hearing loss (SHL) remains controversial. Using data from the National Health Insurance Research Database, we recruited a total of 75,767 subjects aged older than 20 years with no history of SHL from 1998 to 2010, and they were followed up until SHL was observed, they withdrew from the National Health Insurance program, or the study ended. The subjects were evenly exposed to low-level, mid-level, and high-level carbon monoxide (CO) and nitrogen dioxide (NO2). The incidence rate ratio of SHL for patients exposed to high-level CO was 1.24 (95% confidence interval (CI) = 1.14–1.36). The NO2 pollutants increased the incidence rate ratios of SHL in mid-level NO2 and high-level NO2 exposures by 1.10 (95% CI = 1.10–1.32) and 1.36 (95% CI = 1.24–1.49) times, respectively. The adjusted hazard ratio (adj. HR) of SHL in patients exposed to high-level CO was 1.45 (95% CI = 1.31–1.59), relative to that of patients exposed to low-level CO. Compared to patients exposed to low-level NO2, patients exposed to mid-level NO2 (adj. HR = 1.40, 95% CI = 1.27–1.54) and high-level NO2 (adj. HR = 1.63, 95% CI = 1.48–1.81) had a higher risk of developing SHL. The increased risk of SHL following the increased concentrations of air pollutants (CO and NO2) was statistically significant in this study. In conclusion, the subjects’ exposure to air pollution exhibited a significantly higher risk of developing SHL in Taiwan.
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16
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Gopineti L, Paulpillai M, Rosenquist A, Van Bergen AH. Prevalence of Sensorineural Hearing Loss in Children with Palliated or Repaired Congenital Heart Disease. Cureus 2020; 12:e6566. [PMID: 32042536 PMCID: PMC6996535 DOI: 10.7759/cureus.6566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Children with congenital heart disease (CHD) are at increased risk of neurodevelopmental deficits, and the presence of sensorineural hearing loss (SNHL) may further lead to poor language skills acquisition and speech delays. Prevalence of SNHL in the general pediatric population is estimated to be 0.2% at birth to 0.35% during adolescence. Very few studies have attempted to estimate SNHL prevalence in children who have undergone congenital heart surgery. Methods This retrospective study aimed to estimate SNHL prevalence in children who underwent congenital heart surgery in our institution and were followed up in our high-risk pediatric cardiology clinics for four years from 2009 to 2013. Data were collected on demographics, preoperative variables, surgical variables, and post-operative variables. Results SNHL prevalence in asymptomatic, palliated/repaired CHD patients followed in our high-risk clinics and undergoing routine surveillance was 11.6% (20 of 172 patients with hearing impairment). SNHL prevalence was not statistically higher in single-ventricle patients (17.2%) compared to biventricular patients (14.7%). Inotropic score in the first 24 hours of postoperative period (p=0.05), lowest arterial PaO2 (p=0.003), duration of Lasix drip (p=0), and bolus dose in days (p=0.03) were all found to be statistically significant in the hearing-impaired group. However, using logistic regression, we identified no statistically significant predictors for hearing loss. Conclusion The results suggest the need for routine audiology screening of all patients with complex CHD, especially those who have undergone neonatal cardiac repair/palliation at less than one year of age, irrespective of risk factors.
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Affiliation(s)
- Lalitha Gopineti
- Pediatric Cardiology, Children's Mercy Hospitals and Clincs, Wichita, USA
| | - Mane Paulpillai
- Pediatric Cardiology, Advocate Christ Medical Center, Oak Lawn, USA
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Kadıoğlu Şimşek G, Kutman HGK, Canpolat FE, Büyüktiryaki M, Üstün YE. Hearing screening failure rate in newborn infants with hypoxic ischemic encephalopathy. Int J Pediatr Otorhinolaryngol 2020; 128:109691. [PMID: 31562995 DOI: 10.1016/j.ijporl.2019.109691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/11/2019] [Accepted: 09/18/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE The objective of this study was to establish the local incidence of hearing screening failure rate in newborns with all three stages of hypoxic ischemic encephalopathy (HIE). METHODS This retrospective cohort study was undertaken in a tertiary neonatal intensive care unit. Medical records and hearing secreening test results were collected for two years. RESULTS One hundred and ninety seven infants diagnosed with HIE, 20 of them died, 177 screened. Thirty five of 177 (19%) infants failed in screening test for hearing. Screening failure rate was 10/51 (19%), 20/105 (19%) and 5/21 (23%) in stage 1, 2 and 3, respectively and did not differ between HIE stages (p = 0.88). Furthermore failure rates were similar between infants who received therapeutic hypothermia or not (20% vs 19%, p = 0.84). CONCLUSION Hearing screening failure rate in HIE is quite high even in Stage 1 infants. Management and treatment of these infants should be made carefully concerning additional risks for hearing loss and long term follow-up even in Stage 1 HIE infants should be planned strictly.
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Affiliation(s)
- Gülsüm Kadıoğlu Şimşek
- Department of Neonatology, NICU, Zekai Tahir Burak Health Practice and Research Center, University of Medical Sciences, 06240, Hamamönü, Altındağ, Ankara, Turkey.
| | - H Gözde Kanmaz Kutman
- Department of Neonatology, NICU, Zekai Tahir Burak Health Practice and Research Center, University of Medical Sciences, 06240, Hamamönü, Altındağ, Ankara, Turkey.
| | - Fuat Emre Canpolat
- Department of Neonatology, NICU, Zekai Tahir Burak Health Practice and Research Center, University of Medical Sciences, 06240, Hamamönü, Altındağ, Ankara, Turkey.
| | - Mehmet Büyüktiryaki
- Department of Neonatology, NICU, Zekai Tahir Burak Health Practice and Research Center, University of Medical Sciences, 06240, Hamamönü, Altındağ, Ankara, Turkey.
| | - Yaprak Engin Üstün
- Department of Obstetrics and Gyneacology, Chief of Hospital, Zekai Tahir Burak Health Practice and Research Center, University of Medical Sciences, 06240, Hamamönü, Altındağ, Ankara, Turkey.
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Fitzhugh MC, Hemesath A, Schaefer SY, Baxter LC, Rogalsky C. Functional Connectivity of Heschl's Gyrus Associated With Age-Related Hearing Loss: A Resting-State fMRI Study. Front Psychol 2019; 10:2485. [PMID: 31780994 PMCID: PMC6856672 DOI: 10.3389/fpsyg.2019.02485] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 10/21/2019] [Indexed: 12/23/2022] Open
Abstract
A large proportion of older adults experience hearing loss. Yet, the impact of hearing loss on the aging brain, particularly on large-scale brain networks that support cognition and language, is relatively unknown. We used resting-state functional magnetic resonance imaging (fMRI) to identify hearing loss-related changes in the functional connectivity of primary auditory cortex to determine if these changes are distinct from age and cognitive measures known to decline with age (e.g., working memory and processing speed). We assessed the functional connectivity of Heschl's gyrus in 31 older adults (60-80 years) who expressed a range of hearing abilities from normal hearing to a moderate hearing loss. Our results revealed that both left and right Heschl's gyri were significantly connected to regions within auditory, sensorimotor, and visual cortices, as well as to regions within the cingulo-opercular network known to support attention. Participant age, working memory, and processing speed did not significantly correlate with any connectivity measures once variance due to hearing loss was removed. However, hearing loss was associated with increased connectivity between right Heschl's gyrus and the dorsal anterior cingulate in the cingulo-opercular network even once variance due to age, working memory, and processing speed was removed. This greater connectivity was not driven by high frequency hearing loss, but rather by hearing loss measured in the 0.5-2 kHz range, particularly in the left ear. We conclude that hearing loss-related differences in functional connectivity in older adults are distinct from other aging-related differences and provide insight into a possible neural mechanism of compensation for hearing loss in older adults.
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Affiliation(s)
- Megan C. Fitzhugh
- College of Health Solutions, Arizona State University, Tempe, AZ, United States
| | - Angela Hemesath
- College of Health Solutions, Arizona State University, Tempe, AZ, United States
| | - Sydney Y. Schaefer
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States
| | - Leslie C. Baxter
- Department of Psychology, Mayo Clinic, Scottsdale, AZ, United States
| | - Corianne Rogalsky
- College of Health Solutions, Arizona State University, Tempe, AZ, United States
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Sharma R, Gu Y, Ching TYC, Marnane V, Parkinson B. Economic Evaluations of Childhood Hearing Loss Screening Programmes: A Systematic Review and Critique. APPLIED HEALTH ECONOMICS AND HEALTH POLICY 2019; 17:331-357. [PMID: 30680698 PMCID: PMC7279710 DOI: 10.1007/s40258-018-00456-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
BACKGROUND Permanent childhood hearing loss is one of the most common birth conditions associated with speech and language delay. A hearing screening can result in early detection and intervention for hearing loss. OBJECTIVES To update and expand previous systematic reviews of economic evaluations of childhood hearing screening strategies, and explore the methodological differences. DATA SOURCES MEDLINE, Embase, the Cochrane database, National Health Services Economic Evaluation Database (NHS EED), the Health Technology Assessment (HTA) database, and Canadian Agency for Drugs and Technologies in Health's (CADTH) Grey matters. STUDY ELIGIBILITY CRITERIA, PARTICIPANTS AND INTERVENTIONS Economic evaluations reporting costs and outcomes for both the intervention and comparator arms related to childhood hearing screening strategies. RESULTS Thirty evaluations (from 29 articles) were included for review. Several methodological issues were identified, including: few evaluations reported outcomes in terms of quality-adjusted life years (QALYs); none estimated utilities directly from surveying children; none included disutilities and costs associated with adverse events; few included costs and outcomes that differed by severity; few included long-term estimates; none considered acquired hearing loss; some did not present incremental results; and few conducted comprehensive univariate or probabilistic sensitivity analysis. Evaluations published post-2011 were more likely to report QALYs and disability-adjusted life years (DALYs) as outcome measures, include long-term treatment and productivity costs, and present incremental results. LIMITATIONS We were unable to access the economic models and, although we employed an extensive search strategy, potentially not all relevant economic evaluations were identified. CONCLUSIONS AND IMPLICATIONS Most economic evaluations concluded that childhood hearing screening is value for money. However, there were significant methodological limitations with the evaluations.
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Affiliation(s)
- Rajan Sharma
- Macquarie University Centre for the Health Economy, Sydney, NSW, Australia.
| | - Yuanyuan Gu
- Macquarie University Centre for the Health Economy, Sydney, NSW, Australia
- Department of Economics and Related Studies, University of York, York, UK
| | - Teresa Y C Ching
- National Acoustic Laboratories, Australian Hearing Hub, Sydney, NSW, Australia
| | - Vivienne Marnane
- National Acoustic Laboratories, Australian Hearing Hub, Sydney, NSW, Australia
| | - Bonny Parkinson
- Macquarie University Centre for the Health Economy, Sydney, NSW, Australia
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20
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van Beeck Calkoen EA, Engel MSD, van de Kamp JM, Yntema HG, Goverts S, Mulder M, Merkus P, Hensen EF. The etiological evaluation of sensorineural hearing loss in children. Eur J Pediatr 2019; 178:1195-1205. [PMID: 31152317 PMCID: PMC6647487 DOI: 10.1007/s00431-019-03379-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 04/04/2019] [Accepted: 04/08/2019] [Indexed: 12/27/2022]
Abstract
This study aims to evaluate the etiology of pediatric sensorineural hearing loss (SNHL). A total of 423 children with SNHL were evaluated, with the focus on the determination of causative genetic and acquired etiologies of uni- and bilateral SNHL in relation to age at diagnosis and severity of the hearing loss. We found that a stepwise diagnostic approach comprising of imaging, genetic, and/or pediatric evaluation identified a cause for SNHL in 67% of the children. The most common causative finding in children with bilateral SNHL was causative gene variants (26%), and in children with unilateral SNHL, a structural anomaly of the temporal bone (27%). The probability of finding an etiologic diagnosis is significantly higher in children under the age of 1 year and children with profound SNHL.Conclusions: With our stepwise diagnostic approach, we found a diagnostic yield of 67%. Bilateral SNHL often has a genetic cause, whereas in unilateral SNHL structural abnormalities of the labyrinth are the dominant etiologic factor. The diagnostic yield is associated with the age at detection and severity of hearing loss: the highest proportion of causative abnormalities is found in children with a young age at detection or a profound hearing loss. What is Known: • Congenital sensorineural hearing loss is one of the most common congenital disorders • Determination of the cause is important for adequate management and prognosis and may include radiology, serology, and DNA analysis What is New: • Using a stepwise diagnostic approach, causative abnormalities are found in 67% both in uni- and bilateral SNHL, with the highest diagnostic yield in very young children and those suffering from profound hearing loss • Bilateral SNHL often has a genetic cause, whereas in unilateral SNHL structural abnormalities of the labyrinth are the dominant etiologic factor.
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Affiliation(s)
- E. A. van Beeck Calkoen
- Department of Otolaryngology/Head and Neck Surgery, Section Ear and Hearing, VU University Medical Center, Amsterdam, Netherlands ,Amsterdam Public Health research institute, Amsterdam, Netherlands ,Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands
| | - M. S. D. Engel
- Department of Otolaryngology/Head and Neck Surgery, Section Ear and Hearing, VU University Medical Center, Amsterdam, Netherlands ,Amsterdam Public Health research institute, Amsterdam, Netherlands ,Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands
| | - J. M. van de Kamp
- Amsterdam Public Health research institute, Amsterdam, Netherlands ,Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands ,Department of Clinical Genetics, VU University Medical Center, Amsterdam, Netherlands
| | - H. G. Yntema
- Department of Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - S.T. Goverts
- Department of Otolaryngology/Head and Neck Surgery, Section Ear and Hearing, VU University Medical Center, Amsterdam, Netherlands ,Amsterdam Public Health research institute, Amsterdam, Netherlands ,Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands
| | - M.F. Mulder
- Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands ,Department of Pediatrics, VU University Medical Center, Amsterdam, Netherlands
| | - P. Merkus
- Department of Otolaryngology/Head and Neck Surgery, Section Ear and Hearing, VU University Medical Center, Amsterdam, Netherlands ,Amsterdam Public Health research institute, Amsterdam, Netherlands ,Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands
| | - E. F. Hensen
- Department of Otolaryngology/Head and Neck Surgery, Section Ear and Hearing, VU University Medical Center, Amsterdam, Netherlands ,Amsterdam Public Health research institute, Amsterdam, Netherlands ,Center for Diagnostics in Sensorineural Hearing Loss (CDS), VU University Medical Center, Amsterdam, Netherlands ,Department of Otolaryngology/Head and Neck Surgery, Leiden University Medical Center, Leiden, Netherlands
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21
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Ospina-Garcia JC, Perez-Garcia IC, Guerrero D, Sanchez-Solano NJ, Salcedo-Betancourt JD. Prevalence of sensorineural hearing loss in newborns in a hospital from a developing country. ACTA ACUST UNITED AC 2019; 21:56-63. [PMID: 33206927 DOI: 10.15446/rsap.v21n1.68395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 11/16/2018] [Indexed: 11/09/2022]
Abstract
OBJECTIVE This study aimed to determine the prevalence of nonsyndromic congenital sensorineural hearing loss at the Hospital Universitario San Ignacio, Bogotá, Colombia, and to describe the risk factors associated with this condition. MATERIALS AND METHODS A prospective, observational cross-sectional study with bivariate analysis was conducted. A three-phase process using the Otoacoustic Emissions test screened all live newborns between June 2013 and June 2014. Negative cases were confirmed by Automated Auditory Brainstem Response test. RESULTS A total of 962 newborns were screened with Otoacoustic Emissions test bilaterally: 401 males (46.36%), 464 females (53.64%). The mean weight was 2 798.10 g (95%CI: 2 766.51 - 2 839.76). The mean height was 48.60 cm (95%CI: 48.38 - 48.79). The mean age was 16.24 days (95%CI: 15.47 - 17.01). The mean maternal age was 27.37 years (95%CI: 26.76 - 27.98). There was a family history of hearing loss in 9.48% of the cases (n=90), and a family history of genetic diseases in 100 cases (10.56%). There were 14 cases of TORCH infections (1.45%), 375 admissions to the NICU (39.06%), 160 cases of neonatal jaundice (20.1%), and 79 cases of postpartum infections (8.21%). One live newborn presented with microtia. CONCLUSIONS The prevalence of congenital sensorineural hearing loss was 0.31% in both ears, and 0.11% in one ear. Currently, Colombia lacks a public universal newborn hearing screening program, and its future implementation faces great challenges.
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Affiliation(s)
- Juan C Ospina-Garcia
- JO: MD. Bachelor in Medicine. Otolaryngologist. Pediatric Otolaryngologist. Department of Otolaryngology & Maxillofacial Surgery. Hospital Universitario San Ignacio - Pontificia Universidad Javeriana, School of Medicine. Bogotá, Colombia.
| | - Irene C Perez-Garcia
- IP: MD. Bachelor in Medicine. Otolaryngologist. Otolaryngology Section, Surgery Department. Hospital Universitario Fundación Santa Fe de Bogotá. Universidad de los Andes. Bogotá, Colombia.
| | - Diana Guerrero
- DG: Audiologist. Clinical Audiologist. Department of Otolaryngology & Maxillofacial Surgery. Hospital Universitario San Ignacio. Bogotá, Colombia.
| | - Nataly J Sanchez-Solano
- NS: MD. Bachelor in Medicine. Pontificia Universidad Javeriana, School of Medicine. Bogotá, Colombia.
| | - Juan D Salcedo-Betancourt
- JS: MD. Bachelor in Medicine. Pontificia Universidad Javeriana School of Medicine. Bogota, Colombia.
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Taghipour-Sheshdeh A, Nemati-Zargaran F, Zarepour N, Tahmasebi P, Saki N, Tabatabaiefar MA, Mohammadi-Asl J, Hashemzadeh-Chaleshtori M. A novel pathogenic variant in the MARVELD2 gene causes autosomal recessive non-syndromic hearing loss in an Iranian family. Genomics 2018; 111:840-848. [PMID: 29752989 DOI: 10.1016/j.ygeno.2018.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 04/28/2018] [Accepted: 05/08/2018] [Indexed: 10/16/2022]
Abstract
BACKGROUND AND AIMS Hearing loss (HL) is the most common sensorineural disorder and one of the most common human defects. HL can be classified according to main criteria, including: the site (conductive, sensorineural and mixed), onset (pre-lingual and post-lingual), accompanying signs and symptoms (syndromic and non-syndromic), severity (mild, moderate, severe and profound) and mode of inheritance (Autosomal recessive, autosomal dominant, X-linked and mitochondrial). Autosomal recessive non-syndromic HL (ARNSHL) forms constitute a major share of the HL cases. In the present study, next-generation sequencing (NGS) was applied to investigate the underlying etiology of HL in a multiplex ARNSHL family from Khuzestan province, southwest Iran. METHODS In this descriptive study, 20 multiplex ARNSHL families from Khuzestan province, southwest of Iran were recruited. After DNA extraction, genetic linkage analysis (GLA) was applied to screen for a panel of more prevalent loci. One family, which was not linked to these loci, was subjected to Otogenetics deafness Next Generation Sequencing (NGS) panel. RESULTS NGS results showed a novel deletion-insertion variant (c.1555delinsAA) in the MARVELD2 gene. The variant which is a frameshift in the seventh exon of the MARVELD2 gene fulfills the criteria of being categorized as pathogenic according to the American College of Medical Genetics and Genomics (ACMG) guideline. CONCLUSION NGS is very promising to identify the molecular etiology of highly heterogeneous diseases such as HL. MARVELD2 might be important in the etiology of HL in this region of Iran.
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Affiliation(s)
- Afsaneh Taghipour-Sheshdeh
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Fatemeh Nemati-Zargaran
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Narges Zarepour
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Parisa Tahmasebi
- Department of Biology, Faculty of Sciences, Ilam University, Ilam, Iran
| | - Nader Saki
- Hearing Research Center, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Amin Tabatabaiefar
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Noncommunicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Javad Mohammadi-Asl
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Morteza Hashemzadeh-Chaleshtori
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran.
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Marques Abramov D, Saad T, Gomes-Junior SC, de Souza E Silva D, Araújo I, Lopes Moreira ME, Lazarev VV. Auditory brainstem function in microcephaly related to Zika virus infection. Neurology 2018; 90:e606-e614. [PMID: 29352094 DOI: 10.1212/wnl.0000000000004974] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 11/06/2017] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To study the effect of prenatal Zika virus (ZV) infection on brainstem function reflected in brainstem auditory evoked potentials (BAEPs). METHODS In a cross-sectional study in 19 children (12 girls) with microcephaly related to ZV infection, aged between 12 and 62 weeks, the brainstem function was examined through BAEPs. The latencies of wave peaks I, III, and V of the left and right ears (n = 37) were standardized according to normative data, and compared between them by 2-tailed t test. The confounding variables (cephalic perimeter at the born and chronological age) were correlated with the normalized latencies using Pearson test. RESULTS All patients showed, in general, clear waveforms, with latencies within 3 SDs of the normative values. However, statistically increased latencies of waves I and III (I > III, p = 0.031) were observed, relative to wave V (p < 0.001), the latter being closer to respective normative value. The latency of wave I was observed to increase with age (r = 0.45, p = 0.005). The waves, in turn, did not depend on cephalic perimeter. CONCLUSIONS These results are consistent with the functional normality of the brainstem structure and its lack of correlation with microcephaly, suggesting that the disruption produced by the ZV infection does not act in the cell proliferation phase, but mostly in the processes of neuronal migration and differentiation in the telencephalon.
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Affiliation(s)
- Dimitri Marques Abramov
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil
| | - Tania Saad
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil
| | - Saint-Clair Gomes-Junior
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil
| | - Daniel de Souza E Silva
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil
| | - Izabel Araújo
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil
| | - Maria Elizabeth Lopes Moreira
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil
| | - Vladimir V Lazarev
- From the Laboratory of Neurobiology and Clinical Neurophysiology (D.M.A., T.S., D.d.S.e.S., I.A., V.V.L.) and Unit of Clinical Research (S.-C.G.-J., M.E.L.M.), National Institute of Women, Children and Adolescents, Health Fernandes Figueira, Oswaldo Cruz Foundation (FIOCRUZ), Ministry of Health, Rio de Janeiro, Brazil.
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Walowska J, Bolach B, Bolach E. The influence of Pilates exercises on body balance in the standing position of hearing impaired people. Disabil Rehabil 2017; 40:3061-3069. [PMID: 29132250 DOI: 10.1080/09638288.2017.1370731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE Hearing impairment may affect the body posture maintenance. The aim of the study was to evaluate the effect of modified Pilates exercise program on the body posture maintenance in hearing impaired people. METHODS Eighty students (aged 13-24) were enrolled and randomly allocated into two groups: test group (n = 41) which attended an original program based on modified Pilates exercises and control group (n = 39) which attended standard physical education classes. Stabilographic tests were conducted at baseline and after 6-week training program. RESULTS Both groups showed improved control of body balance in a standing position manifested in reductions of the length of path, surface area, and speed of deflection. Modified Pilates program was significantly more effective in improving body balance control in relaxed posture and with feet together than standard physical education classes. The greater efficiency of the modified Pilates program was expressed in a significant improvement in balance control parameters, i.e., path length, surface area, and speed of deflection. CONCLUSIONS The modified Pilates program was more effective in improving body balance control in the hearing impaired people than standard physical education classes. Modification of physical activity recommendations for hearing impaired students may be considered; however, further research is required. Implications for Rehabilitation Hearing impairment impacts the mental, social and, physical spheres of life as well as deteriorates equivalent reactions and the way body posture is maintained. In hearing impaired people, control of body balance and muscle coordination is often disturbed, thus more attention should be paid to exercises associated with balance which may improve the ability to learn and develop motor skills. Modified Pilates program was significantly more effective in improving body balance control than standard physical education classes in hearing impaired people.
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Affiliation(s)
- Jagoda Walowska
- a J. Gromkowski Provincial Specialist Hospital , Wroclaw , Poland
| | - Bartosz Bolach
- b Department of Sport Didactics, Faculty of Sport Sciences , University School of Physical Education , Wroclaw , Poland
| | - Eugeniusz Bolach
- c Department of Sport of Persons with Disabilities, Faculty of Sport Sciences , University School of Physical Education , Wroclaw , Poland
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Sanyelbhaa H, Kabel A, Abo El-Naga HAER, Sanyelbhaa A, Salem H. The risk ratio for development of hereditary sensorineural hearing loss in consanguineous marriage offspring. Int J Pediatr Otorhinolaryngol 2017; 101:7-10. [PMID: 28964313 DOI: 10.1016/j.ijporl.2017.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/15/2017] [Accepted: 07/17/2017] [Indexed: 11/16/2022]
Abstract
OBJECTIVES This study aims to define the relative risk of development of hearing loss in offspring of consanguineous marriages. MATERIALS AND METHODS This is a retrospective case-control study conducted in a tertiary referral center in Jeddah, KSA. The study group included 1600 probands (848 males, 752 females), with age range 0.5-12 years (6.6 ± 3.6). The study group comprised of two equal, age and sex matched subgroups; Hearing Loss (HL) group and Normal Hearing (NH) group. The children included in the HL group should have idiopathic or non syndromic genetic sensorineural hearing loss. RESULTS The HL Group comprised 800 children with variable degrees of sensorineural hearing loss. Profound and severe degrees of hearing loss were the most prevalent degrees (P <0.05%). The prevalence of consanguineous marriage offspring in the NH group was 42.5%, while in the HL group it was 68.9% (P < 0.05). The differences between both study subgroups regarding the distribution of different degrees of parental consanguinity (first, second, double first, and first once removed cousins) were insignificant (P > 0.05). The relative risk and 95% confidence interval (RR, 95% CI) for development of hearing loss in offspring of consanguineous marriage was 1.76 (95% CI 1.57-1.97, P < 0.001). CONCLUSIONS There was 76% increased risk for consanguineous marriage progeny to develop SNHL when compared to non consanguineous progeny.
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Affiliation(s)
| | | | | | | | - Hatem Salem
- Ministry of Health, Kingdome of Saudi Arabia, Saudi Arabia
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Hawley KA, Goldberg DM, Anne S. Utility of a multidisciplinary approach to pediatric hearing loss. Am J Otolaryngol 2017; 38:547-550. [PMID: 28535875 DOI: 10.1016/j.amjoto.2017.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/08/2017] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Because management of hearing loss (HL) often requires multiple specialists, a multidisciplinary clinic, Pediatric Hearing Management Clinic, (PHMC) was established to coordinate care for children with newly diagnosed HL. METHODS Retrospective review of patients seen in PHMC from February 2009 to April 2010. RESULTS Clinic information was available for 40/41 of the patients and was included in the study. 37/41 had confirmed HL. HL was categorized into bilateral/symmetric [15], bilateral/asymmetric [12] and unilateral [10]. Sixteen patients subsequently received hearing amplification after PHMC visit. Follow up was successfully established with otolaryngology in 23/32 (72%) patients, audiology in 29/40 (73%) patients, speech pathology in 11/12 (92%) patients, and ophthalmology in 15/30 (50%) patients. Twenty-nine patients completed evaluations of PHMC. The mean score in six total categories was 3.8/4.0 (4.0 as the highest satisfaction). CONCLUSION A multidisciplinary clinic approach provides a convenient and effective way to coordinate care for children with HL.
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Fontana P, Melis D, D'Amico A, Cappuccio G, Auletta G, Vassallo P, Genesio R, Nitsch L, Buffolano W. Sensorineural Hearing Loss in a Patient Affected by Congenital Cytomegalovirus Infection: Is It Useful to Identify Comorbid Pathologies? J Pediatr Genet 2017; 6:181-185. [PMID: 28794912 DOI: 10.1055/s-0037-1599223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 01/26/2017] [Indexed: 10/20/2022]
Abstract
Sensorineural hearing loss (SNHL) is a common defect with a multifactorial etiology. Congenital cytomegalovirus infection (cCMV) is the most common infectious cause, and its early detection allows a prompt pharmacological treatment that can improve hearing prognosis. In a consistent percentage of profound SNHL, genetic causes and/or inner ear malformations are involved; their prompt diagnosis might change therapeutic options. This study reports a case of a 3- year-old female patient with symptomatic cCMV infection who also exhibits developmental delay, dysmorphic facial features, bilateral hearing loss, and cochlear incomplete partition, type 2, in 7q21.3 deletion. This deletion includes the genes DLX5 and DLX6 , which could be the candidate genes for the ear malformation named incomplete partition, type 2.
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Affiliation(s)
- P Fontana
- Department of Molecular Medicine and Medical Biotechnologies, "Federico II" University of Naples, Naples, Italy
| | - D Melis
- Section of Pediatrics, Department of Translational Medical Sciences, "Federico II" University of Naples, Naples, Italy
| | - A D'Amico
- Section of Diagnostic Imaging, Department of Advanced Biomedical Sciences, "Federico II" University of Naples, Naples, Italy
| | - G Cappuccio
- Section of Pediatrics, Department of Translational Medical Sciences, "Federico II" University of Naples, Naples, Italy
| | - G Auletta
- Department of Neurosciences, "Federico II" University of Naples, Naples, Italy
| | - P Vassallo
- Department of Ophthalmology, "Federico II" University of Naples, Naples, Italy
| | - R Genesio
- Department of Molecular Medicine and Medical Biotechnologies, "Federico II" University of Naples, Naples, Italy
| | - L Nitsch
- Department of Molecular Medicine and Medical Biotechnologies, "Federico II" University of Naples, Naples, Italy
| | - W Buffolano
- Section of Pediatrics, Department of Translational Medical Sciences, "Federico II" University of Naples, Naples, Italy
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Sommen M, Wuyts W, Van Camp G. Molecular diagnostics for hereditary hearing loss in children. Expert Rev Mol Diagn 2017; 17:751-760. [PMID: 28593790 DOI: 10.1080/14737159.2017.1340834] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Hearing loss (HL) is the most common birth defect in industrialized countries with far-reaching social, psychological and cognitive implications. It is an extremely heterogeneous disease, complicating molecular testing. The introduction of next-generation sequencing (NGS) has resulted in great progress in diagnostics allowing to study all known HL genes in a single assay. The diagnostic yield is currently still limited, but has the potential to increase substantially. Areas covered: In this review the utility of NGS and the problems for comprehensive molecular testing for HL are evaluated and discussed. Expert commentary: Different publications have proven the appropriateness of NGS for molecular testing of heterogeneous diseases such as HL. However, several problems still exist, such as pseudogenic background of some genes and problematic copy number variant analysis on targeted NGS data. Another main challenge for the future will be the establishment of population specific mutation-spectra to achieve accurate personalized comprehensive molecular testing for HL.
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Affiliation(s)
- Manou Sommen
- a Center of Medical Genetics , University of Antwerp & Antwerp University Hospital , Antwerp , Belgium
| | - Wim Wuyts
- a Center of Medical Genetics , University of Antwerp & Antwerp University Hospital , Antwerp , Belgium
| | - Guy Van Camp
- a Center of Medical Genetics , University of Antwerp & Antwerp University Hospital , Antwerp , Belgium
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Bilateral Labyrinthine and Internal Auditory Canal Enhancement in an Infant With Severe Labyrinthine Dysplasia: A Previously Unreported Phenomenon. Otol Neurotol 2017; 38:e21-e25. [PMID: 28346292 DOI: 10.1097/mao.0000000000001392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To describe a novel case of congenital profound bilateral sensorineural hearing loss in a patient with bilateral nodular internal auditory canal and labyrinthine enhancement and temporal bone dysplasia. PATIENTS A 76-day-old female was referred to the authors' center for evaluation of congenital deafness. Behavioral observations and objective audiometric evaluation demonstrated bilateral profound sensorineural hearing loss and a comprehensive multidisciplinary evaluation identified compound heterozygous pathogenic variants in MYO7A, a gene associated with Usher Syndrome Type 1B or DFNB2. Computed tomography and contrast-enhanced magnetic resonance imaging studies demonstrated bilateral temporal bone anomalies with unique middle and inner ear malformations, as well as unique contrast enhancement in the membranous labyrinth, internal auditory canals, and cranial nerves, which have not been previously described with MYO7A variants. INTERVENTIONS Given the potential risk for progressive bilateral labyrinthitis ossificans, bilateral simultaneous cochlear implantation was performed at 4 months of age. MAIN OUTCOME MEASURES Subsequent audiologic follow up after implantation shows significantly improved access to auditory information and increased vocalizations. At last testing, speech and language skills for both receptive and expressive language abilities were found to be commensurate with her chronological age. CONCLUSION We report a novel presentation and imaging findings of congenital bilateral profound sensorineural hearing loss in a patient with nodular internal auditory canal and labyrinthine enhancement and coexisting inner ear dysplasia. Despite the multiple radiologic abnormalities, the patient has demonstrated good benefit from cochlear implantation. Future study of rare variants of congenital deafness, such as this, is critical toward defining new disease processes and determining optimal treatment.
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Abdurehim Y, Lehmann A, Zeitouni AG. Predictive Value of GJB2 Mutation Status for Hearing Outcomes of Pediatric Cochlear Implantation. Otolaryngol Head Neck Surg 2017; 157:16-24. [PMID: 28322114 DOI: 10.1177/0194599817697054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objective To systematically review and quantify current evidence regarding the association of GJB2 mutation status with outcomes of pediatric cochlear implantation. Data Sources PubMed, Embase, and the Cochrane Library were searched for "GJB2,""pediatric hearing loss," and "cochlear implantation" and their synonyms, with no language restrictions, until December 2, 2015. Review Methods Studies were included that investigated the status of GJB2 mutation and its predictive value for outcomes of pediatric cochlear implantation. Speech recognition scores, Infant-Toddler Meaningful Auditory Integration Scale, Speech Intelligibility Rating, and Categorized Auditory Performance were pooled using weighted mean differences, and a 95% confidence interval. Results Eighteen studies met the inclusion criteria. The differences between GJB2-related deafness and non- GJB2-related deafness due to unidentified causes and other types of genetic deafness without additional disabilities were not statistically significant ( P = .15 and P = .30, respectively); however, the difference between GJB2-related deafness and acquired hearing loss due to environmental etiologies was statistically significant and favored GJB2-related deafness ( P = .03). Conclusion GJB2-related deafness leads to significantly better cochlear implantation outcomes when compared with acquired deafness caused by environmental etiologies. However, GJB2 mutation is not associated with a significantly better prognosis when compared with those whose deafness results from either nonsyndromic hearing loss of unknown origin or other types of genetic mutations in the absence of other neurologic deficits.
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Affiliation(s)
- Yasin Abdurehim
- 1 Department of Otolaryngology-Head and Neck Surgery, McGill University, Montreal, Canada.,2 Department of Otolaryngology, First Teaching Hospital of Xinjiang Medical University, Urumqi, China
| | - Alexandre Lehmann
- 1 Department of Otolaryngology-Head and Neck Surgery, McGill University, Montreal, Canada.,3 Centre for Research on Brain, Music and Language, Montreal, Canada
| | - Anthony G Zeitouni
- 1 Department of Otolaryngology-Head and Neck Surgery, McGill University, Montreal, Canada
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Threshold changes of ABR results in toddlers and children. Int J Pediatr Otorhinolaryngol 2016; 85:120-7. [PMID: 27240510 DOI: 10.1016/j.ijporl.2016.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 03/07/2016] [Accepted: 03/14/2016] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Auditory brainstem response (ABR) is a clinically established method to identify the hearing threshold in young children and is regularly performed after hearing screening has failed. Some studies have shown that, after the first diagnosis of hearing impairment in ABR, further development takes place in a spectrum between progression of hearing loss and, surprisingly, hearing improvement. OBJECTIVE The aim of this study is to evaluate changes over time of auditory thresholds measured by ABR among young children. MATERIAL AND METHODS For this retrospective study, 459 auditory brainstem measurements were performed and analyzed between 2010 and 2014. Hearing loss was detected and assessed according to national guidelines. 104 right ears and 101 left ears of 116 children aged between 0 and 3 years with multiple ABR measurements were included. The auditory threshold was identified using click and/or NB-chirp-stimuli in natural sleep or in general anesthesia. The frequency of differences of at least more than 10dB between the measurements was identified. RESULTS In 37 (35%) measurements of right ears and 38 (38%) of left ears there was an improvement of the auditory threshold of more than 10dB; in 27 of those measurements more than 20dB improvement was found. Deterioration was seen in 12% of the right ears and 10% of the left ears. Only half of the children had stable hearing thresholds in repeated measurements. The time between the measurements was on average 5 months (0 to 31 months). CONCLUSION Hearing threshold changes are often seen in repeated ABR measurements. Therefore multiple measurements are necessary when ABR yields abnormal. Hearing threshold changes should be taken into account for hearing aid provision.
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DeMarcantonio M, Choo DI. Radiographic Evaluation of Children with Hearing Loss. Otolaryngol Clin North Am 2015; 48:913-32. [DOI: 10.1016/j.otc.2015.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Petersen NK, Jørgensen AW, Ovesen T. Prevalence of various etiologies of hearing loss among cochlear implant recipients: Systematic review and meta-analysis. Int J Audiol 2015; 54:924-32. [PMID: 26642892 PMCID: PMC4732452 DOI: 10.3109/14992027.2015.1091094] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To investigate the etiology of deafness in cochlear implanted children and to address the question whether there is a need for more thorough diagnostics, especially concerning genetics. DESIGN Systematic review. Four databases were searched for studies (year 2000-2014) on cochlear implanted children (n > 100). Studies were excluded if etiology had influenced their inclusion criteria. Eligibility and methodological quality were assessed independently by three authors. The studies' description of diagnostic evaluation was categorized in three groups. STUDY SAMPLE Sixteen studies were included (5069 children). RESULTS The most common etiological categories were 'Unknown' 40.3% (95% CI 32.8 to 48.0), 'Non-syndromic' 22.4% (95% CI 17.1 to 28.2), and 'Postnatal' 11.3% (95% CI 7.2 to 16.2). Studies published after 2006 had a lower proportion of 'Unknown' etiology 35.3% (95% CI 28.0 to 42.8) than older 45.5% (95% CI 31.0 to 60.4). Important information was missing from several studies: 11 (69%) studies did not provide detailed description on diagnostic evaluation of the etiology of deafness and had a higher proportion of 'Unknown' etiology. CONCLUSIONS In order to ensure a higher level of comparability in future studies, we recommend agreement upon an international standard of diagnostics and the introduction of an international standard for reporting etiology.
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Affiliation(s)
| | - Anders W Jørgensen
- a Department of Otorhinolaryngology , Aarhus University Hospital , Aarhus C , Denmark
| | - Therese Ovesen
- a Department of Otorhinolaryngology , Aarhus University Hospital , Aarhus C , Denmark
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Toumpas CJ, Clark J, Harris A, Beswick R, Nourse CB. Congenital cytomegalovirus infection is a significant cause of moderate to profound sensorineural hearing loss in Queensland children. J Paediatr Child Health 2015; 51:541-544. [PMID: 25412949 DOI: 10.1111/jpc.12776] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/11/2014] [Indexed: 11/30/2022]
Abstract
AIM To investigate the proportion of children with moderate to profound hearing loss who have congenital cytomegalovirus (cCMV) infection. METHOD Retrospective analysis of CMV dried blood spot (DBS) polymerase chain reaction (PCR) in children with moderate to profound hearing impairment referred to tertiary referral centres in Queensland. Participants were under 18 years old with no readily identified cause of hearing impairment, between 2008 and 2011. The primary outcome measure was DBS CMV PCR. Other outcome measures for cases referred to the Childhood Hearing Clinic (CHC) at the Mater Children's Hospital were level of hearing impairment and the neonatal hearing screen result. RESULTS Of DBS CMV PCR testing for 106 children at the CHC for 2008 to 2011 inclusive, nine (8.5%) were positive (five with bilateral hearing impairment, four with unilateral hearing impairment). The prevalence of cCMV infection in children with moderate to profound hearing impairment was 8.4%, consistent with the statewide rate of 9.4% for 2008 to mid-2011. CONCLUSION cCMV is a significant cause of hearing impairment in Queensland children. Investigation for cCMV by retrospective DBS CMV PCR should be part of the routine investigation of all babies and young children with hearing impairment. However early diagnosis is preferable and could be achieved by routine early screening of all newborns with hearing impairment for CMV before 3 weeks of age. The healthy hearing screening programme is a routine part of neonatal care. Enhancing the integration of screening for cCMV may reduce the current delays in diagnosis and should be evaluated.
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Affiliation(s)
- Christopher J Toumpas
- Department of Paediatrics, Mater Children's Hospital, South Brisbane, Queensland, Australia.,Department of Paediatrics, Greenslopes Private Hospital, South Brisbane, Queensland, Australia.,School of Medicine, University of Queensland, South Brisbane, Queensland, Australia
| | - Julia Clark
- Department of Paediatrics, Lady Cilento Children's Hospital, South Brisbane, Queensland, Australia.,Department of Paediatrics, University of Queensland, South Brisbane, Queensland, Australia
| | - Alison Harris
- Department of Paediatrics, Lady Cilento Children's Hospital, South Brisbane, Queensland, Australia.,Department of Paediatrics, University of Queensland, South Brisbane, Queensland, Australia
| | - Rachael Beswick
- Health Services Support Agency, Brisbane, Queensland, Australia
| | - Clare B Nourse
- Department of Paediatrics, Lady Cilento Children's Hospital, South Brisbane, Queensland, Australia.,Department of Paediatrics, University of Queensland, South Brisbane, Queensland, Australia
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Deklerck AN, Acke FR, Janssens S, De Leenheer EMR. Etiological approach in patients with unidentified hearing loss. Int J Pediatr Otorhinolaryngol 2015; 79:216-22. [PMID: 25555640 DOI: 10.1016/j.ijporl.2014.12.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/06/2014] [Accepted: 12/09/2014] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Etiological diagnosis of hearing impairment is of great importance to ensure early and adequate management. Even after thorough history taking, clinical and audiometric evaluation, the cause of hearing loss remains unclear in a majority of patients. Further examinations can imply imaging, ophthalmologic investigations, laboratory tests, electrocardiography and genetic testing. Lately, the latter has taken an increasingly prominent place within this diagnostic work-up. However, clear guidelines about optimal implementation and sequence of these tests are required. METHODS Records of patients who visited the consultation for otogenetics at Ghent University Hospital (Belgium) during the period 2006-2012 were retrospectively reviewed. In order to optimize the etiological-diagnostic work-up of unidentified hearing loss, application patterns and results of various diagnostic tests, audiometric and etiological data of each patient were collected and analyzed. RESULTS Data of 191 patients were analyzed. In 81.2% of the patients, a cause of hearing loss could be determined or suspected. In total, 65.4% had a (presumably) genetic etiology, with connexin 26 (GJB2) mutations as the leading cause. Inquiry of risk factors, associated with congenital hearing loss, and pedigree analysis were found to have the highest diagnostic gain (61.3% and 41.8%). Connexin 26 gene mutations were only present in bilateral hearing impairment, whereas CT abnormalities were related to unilateral (P=0.003), profound (P<0.001) hearing loss. An enlarged vestibular aqueduct was present in 42.9% of all CT abnormalities. Ophthalmologic anomalies were detected in 35.7% of the studied patients. CONCLUSIONS A sequential approach for the etiological diagnosis of unidentified hearing loss could determine or suggest a cause in more than 80% of patients. The approach may vary based on the presenting phenotype.
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Affiliation(s)
- Ann N Deklerck
- Department of Otorhinolaryngology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - Frederic R Acke
- Department of Otorhinolaryngology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - Sandra Janssens
- Department of Medical Genetics, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - Els M R De Leenheer
- Department of Otorhinolaryngology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium.
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Olusanya BO. Societal impact of bilirubin-induced hearing impairment in resource-limited nations. Semin Fetal Neonatal Med 2015; 20:58-63. [PMID: 25573775 DOI: 10.1016/j.siny.2014.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Infants with bilirubin-induced neurologic dysfunction (BIND) are characterized by several developmental disabilities including auditory impairments. This paper explores the societal impact of bilirubin-induced auditory impairments, inclusive of hearing impairments and auditory neuropathy spectrum disorders, on these infants, their families, and on the community in resource-limited countries (per capita income of US$6,000 or less). Auditory impairments have substantial emotional, social, and economic impact on the affected infants, their families and communities. The burden is exacerbated by widespread poverty, unfavorable community attitudes towards disabilities, and lack of requisite health, educational, and social services. Curtailing the incidence of avoidable severe hyperbilirubinemia through proactive and effective management of infants at risk or with severe hyperbilirubinemia is necessary at all levels of healthcare delivery. Early detection and intervention for unavoidable auditory impairments should be widely promoted to provide improved developmental trajectories for the affected infants.
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Affiliation(s)
- Bolajoko O Olusanya
- Centre for Healthy Start Initiative, 286A Corporation Drive, Dolphin Estate, Ikoyi, Lagos, Nigeria.
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Dahl JP, Stadler ME, Huang BY, Miao D, Patel MR, Adunka OF, Buchman CA, Fine JP, Zdanski CJ. Connexin-Related (DFNB1) Hearing Loss. Otolaryngol Head Neck Surg 2015; 152:889-96. [DOI: 10.1177/0194599814566399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 12/10/2014] [Indexed: 11/15/2022]
Abstract
Objectives Determine if routine computed tomography (CT) imaging is necessary in the workup for children with connexin-related (DFNB1) sensorineural hearing loss (SNHL). Study Design Case-control retrospective chart and imaging review. Setting Tertiary care otolaryngology practice. Subjects and Methods High-resolution temporal bone CT scans of children (n = 21) with DFNB1 SNHL were compared to age-matched controls with either conductive hearing loss (CHL, n = 33) or a nonsyndromic, non-DFNB1 SNHL (n = 33). Sixteen measurements of cochleo-vestibular structures were recorded. Statistical analysis was performed using a repeated analysis of variance model that controlled for both age and gender. Area under the curve (AUC) and multidimensional AUC (MAUC) analyses were also performed. Results Overall, no statistically significant differences were found between the 3 experimental groups. In addition, comparisons between the DFNB1 and CHL groups, DFNB1 and non-DFNB1 SNHL groups, and CHL and non-DFNB1 SNHL groups failed to demonstrate any statistically significant differences. AUC and MAUC analyses also failed to detect any significant differences between the 3 groups. Conclusions Patients with DFNB1 SNHL do not have significant anatomic differences on temporal bone CT scans when compared to non-DFNB1 SNHL and CHL control groups. Based on the above analysis, it is reasonable to avoid routine CT imaging of the temporal bones in children with known DFNB1 SNHL unless otherwise clinically indicated.
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Affiliation(s)
- John P. Dahl
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Michael E. Stadler
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Benjamin Y. Huang
- Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Di Miao
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Mihir R. Patel
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Oliver F. Adunka
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Craig A. Buchman
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jason P. Fine
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Carlton J. Zdanski
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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Häkli S, Luotonen M, Bloigu R, Majamaa K, Sorri M. Childhood hearing impairment in northern Finland, etiology and additional disabilities. Int J Pediatr Otorhinolaryngol 2014; 78:1852-6. [PMID: 25193587 DOI: 10.1016/j.ijporl.2014.08.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/06/2014] [Accepted: 08/09/2014] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The purpose of this study was to determine the prevalence and etiology of hearing impairment (HI) in Finnish children and to evaluate the frequency and type of additional disabilities among children with HI. METHODS Subjects consisted of 214 children with mild to profound HI ascertained until the age of 10 years. They belonged to the birth cohort spanning the years 1993-2002 in northern Finland. The clinical data were collected from the electronic patient records of the Oulu University Hospital. Age at ascertainment, degree and type of HI and audiogram configuration were determined. Risk factors and etiology of HI and co-existing disabilities were recorded. RESULTS The prevalence of childhood HI was 2.3/1000 live births (95% CI; 2.0, 2.7). The etiology of HI was genetic in 47.2%, acquired in 16.4% and unknown in 36.4% children. Among the 214 children with HI, 101 (47.2%) had other minor or major disabilities. The frequency of additional disabilities did not differ between children with mild HI and those with moderate or severe HI (p=0.78). Additional disabilities were more common (65.7%) in children with acquired HI than in children with genetic or unknown HI (43.6%) (p=0.035). CONCLUSION The prevalence of childhood HI has remained unchanged in northern Finland as compared to previous studies. Genetic causes were the most common (47%) etiology of childhood HI. Among acquired causes of HI, perinatal risk factors were more common than previously. The frequency of additional disabilities was similar among children with different degrees of HI. Because almost 40% of children had one or more additional disabilities affecting development or learning, it is important to take them into consideration in rehabilitation.
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Affiliation(s)
- Sanna Häkli
- Department of Otorhinolaryngology, Oulu University Hospital, Oulu, Finland; Medical Research Center, Oulu University Hospital, Oulu, Finland; Institute of Clinical Medicine, Department of Otorhinolaryngology, University of Oulu, Oulu, Finland.
| | - Mirja Luotonen
- Department of Otorhinolaryngology, Oulu University Hospital, Oulu, Finland
| | - Risto Bloigu
- Medical Informatics and Statistics Research Group, University of Oulu, Oulu, Finland
| | - Kari Majamaa
- Medical Research Center, Oulu University Hospital, Oulu, Finland; Institute of Clinical Medicine, Department of Neurology, University of Oulu, Oulu, Finland; Department of Neurology, Oulu University Hospital, Oulu, Finland
| | - Martti Sorri
- Department of Otorhinolaryngology, Oulu University Hospital, Oulu, Finland; Institute of Clinical Medicine, Department of Otorhinolaryngology, University of Oulu, Oulu, Finland
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Oliveira JSD, Rodrigues LB, Aurélio FS, Silva VBD. Risk factors and prevalence of newborn hearing loss in a private health care system of Porto Velho, Northern Brazil. REVISTA PAULISTA DE PEDIATRIA 2014; 31:299-305. [PMID: 24142311 PMCID: PMC4182975 DOI: 10.1590/s0103-05822013000300005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Accepted: 02/18/2013] [Indexed: 11/23/2022]
Abstract
OBJECTIVE: To determine the prevalence of hearing loss and to analyze the results of
newborn hearing screening and audiological diagnosis in private health care
systems. METHODS Cross-sectional and retrospective study in a database of newborn hearing
screening performed by a private clinic in neonates born in private
hospitals of Porto Velho, Rondônia, Northern Brazil. The screening results,
the risk for hearing loss, the risk indicators for hearing loss and the
diagnosis were descriptively analyzed. Newborns cared in rooming in with
their mothers were compared to those admitted to the Intensive Care Unit
regarding risk factors for hearing loss. RESULTS: Among 1,146 (100%) enrolled newborns, 1,064 (92.8%) passed and 82 (7.2%)
failed the hearing screening. Among all screened neonates, 1,063 (92.8%)
were cared in rooming and 83 (7.2%) needed intensive care; 986 (86.0%) were
considered at low risk and 160 (14.0%) at high risk for hearing problems. Of
the 160 patients identified as having high risk for hearing loss, 83 (37.7%)
were admitted to an hospitalized in the Intensive Care Unit, 76 (34.5%) used
ototoxic drugs and 38 (17.2%) had a family history of hearing loss in
childhood. Hearing loss was diagnosed in two patients (0.2% of the screened
sample). CONCLUSIONS: The prevalence of hearing loss in newborns from private hospitals was two
cases per 1,000 evaluated patients. The use of ototoxic drugs, admission to
Intensive Care Unit and family history of hearing loss were the most common
risk factors for hearing loss in the studied population.
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Ridal M, Outtasi N, Taybi Z, Boulouiz R, Chaouki S, Boubou M, Maaroufi M, Benmansour N, Zaki Z, Ouldim K, Barakat H, Hida M, Tizniti S, El Alami MN. [Etiologic profile of severe and profound sensorineural hearing loss in children in the region of north-central Morocco]. Pan Afr Med J 2014; 17:100. [PMID: 25018837 PMCID: PMC4081148 DOI: 10.11604/pamj.2014.17.100.2331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 11/28/2013] [Indexed: 11/24/2022] Open
Abstract
Introduction Le diagnostic d'une surdité profonde est possible dès les premiers jours de vie. Or, le développement du langage et l'intégration scolaire et professionnelle ne sont pas possible que si la surdité est prise en charge précocement. L’établissement d'un diagnostc étiologique a des implications pronostiques et thérapeutiques. Méthodes C'est une étude rétrospective allant de Juin 2009 au mois de Janvier 2012 ayant recensé 250 cas d'enfants porteurs d'une surdité sévère et profonde. Résultats La moyenne d’âge au moment de l'annonce du diagnostic est de 3.7 ans. Les étiologies prédominantes sont les surdités génétiques dans 35.6% suivies des surdités acquises dans 30.8% des cas. Dans 34.4% des cas aucune étiologie n'a pu être retrouvée. Conclusion Cette étude met en évidence la prédominance éventuelle de causes génétiques de la surdité neurosensorielle de l'enfant au Maroc, et souligne la nécessité d'améliorer les politiques de prévention des maladies infectieuses et de dépistage de la surdité néonatale. Cependant, des analyses moléculaires plus ciblées et la réalisation d'un scanner des rochers systématiques sont nécessaires pour évaluer plus précisément la contribution des étiologies génétiques.
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Affiliation(s)
- Mohammed Ridal
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Naouar Outtasi
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Zainab Taybi
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Redouan Boulouiz
- Laboratoire de biologie moléculaire, Institut Pasteur Casablanca, Maroc
| | | | | | | | - Najib Benmansour
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Zouheir Zaki
- Service d'Oto-Rhino-Laryngologie, CHU Hassan II Fés et faculté de médecine de Fès, Maroc
| | - Karim Ouldim
- Laboraoire de génétique médicale, CHU Hassan II Fès, Maroc
| | - Hamid Barakat
- Laboratoire de biologie moléculaire, Institut Pasteur Casablanca, Maroc
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Lyness RC, Alvarez I, Sereno MI, MacSweeney M. Microstructural differences in the thalamus and thalamic radiations in the congenitally deaf. Neuroimage 2014; 100:347-57. [PMID: 24907483 PMCID: PMC4148523 DOI: 10.1016/j.neuroimage.2014.05.077] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 05/18/2014] [Accepted: 05/28/2014] [Indexed: 12/01/2022] Open
Abstract
There is evidence of both crossmodal and intermodal plasticity in the deaf brain. Here, we investigated whether sub-cortical plasticity, specifically of the thalamus, contributed to this reorganisation. We contrasted diffusion weighted magnetic resonance imaging data from 13 congenitally deaf and 13 hearing participants, all of whom had learnt British Sign Language after 10 years of age. Connectivity based segmentation of the thalamus revealed changes to mean and radial diffusivity in occipital and frontal regions, which may be linked to enhanced peripheral visual acuity, and differences in how visual attention is deployed in the deaf group. Using probabilistic tractography, tracts were traced between the thalamus and its cortical targets, and microstructural measurements were extracted from these tracts. Group differences were found in microstructural measurements of occipital, frontal, somatosensory, motor and parietal thalamo-cortical tracts. Our findings suggest that there is sub-cortical plasticity in the deaf brain, and that white matter alterations can be found throughout the deaf brain, rather than being restricted to, or focussed in the auditory cortex.
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Affiliation(s)
- Rebecca C Lyness
- Cognitive and Perceptual Brain Sciences, 26 Bedford Way, University College London, London WC1H 0AP, UK.
| | - I Alvarez
- Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Martin I Sereno
- Cognitive and Perceptual Brain Sciences, 26 Bedford Way, University College London, London WC1H 0AP, UK; Birkbeck, University of London, Malet Street, Bloomsbury, London WC1E 7HX, UK
| | - Mairéad MacSweeney
- Deafness, Cognition & Language Research Centre, 49 Gordon Square, University College London, London WC1H 0PD, UK; Institute of Cognitive Neuroscience, 17 Queen Square, University College London, London WC1H 3AR, UK
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Pereira T, Costa KC, Pomilio MCA, Costa SMDS, Rodrigues GRI, Sartorato EL. Investigação etiológica da deficiência auditiva em neonatos identificados em um programa de triagem auditiva neonatal universal. REVISTA CEFAC 2014. [DOI: 10.1590/1982-0216201419712] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objetivo descrever os resultados da investigação etiológica da deficiência auditiva realizada em neonatos rastreados em um programa de triagem auditiva neonatal universal. Métodos estudo descritivo, transversal e prospectivo. Foram incluídos no estudo todos os neonatos diagnosticados com deficiência auditiva identificados em um programa de triagem auditiva neonatal universal no período de agosto de 2003 a dezembro de 2006. A provável etiologia da deficiência auditiva foi determinada após anamnese detalhada realizada pelo médico otorrinolaringologista; pesquisa das sorologias para toxoplasmose, rubéola, citomegalovírus, herpes, sífilis e HIV; tomografia dos ossos temporais e exames genéticos. Resultados foram diagnosticados 17 sujeitos com deficiência auditiva no período estudado. 64.7% dos casos estudados apresentaram como provável etiologia causas pré-natais, 29.4% causas peri-natais e um sujeito (5,9%) apresentou etiologia desconhecida. Das causas pré-natais, 36.4% tiveram origem genética confirmada e 36.4% etiologia presumida de hereditariedade. Foi confirmada a presença de infecções congênitas em 18.2% dos casos e um sujeito (9%) apresentou anomalia craniofacial como provável etiologia. O grau de perda auditiva mais frequente observado nos sujeitos estudados foi o profundo (47,1%). Conclusão a maior ocorrência de etiologias observada neste estudo foram as de origem pré-natal, seguida das de origem peri-natal.
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Affiliation(s)
- Tânia Pereira
- Núcleo de Estudos e Pesquisas da Associação Terapêutica de Estimulação Auditiva e Linguagem, Brasil
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Emmett SD, West KP. Gestational vitamin A deficiency: a novel cause of sensorineural hearing loss in the developing world? Med Hypotheses 2014; 82:6-10. [PMID: 24120698 PMCID: PMC4391953 DOI: 10.1016/j.mehy.2013.09.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/11/2013] [Accepted: 09/17/2013] [Indexed: 10/26/2022]
Abstract
Hearing loss is a substantial public health problem with profound social and economic consequences in the developing world. The World Health Organization (WHO) estimates that there are 360 million people living with disabling hearing loss globally, and 80% of these individuals are from low- and middle-income countries. The epidemiology of hearing impairment remains poorly defined in most impoverished societies. Middle ear infections in childhood are a key determinant; however, congenital anomalies may also comprise an important etiology and may arise from gestational malnutrition. While evidence exists that preventable vitamin A deficiency exacerbates the severity of ear infections and, consequently, hearing loss, antenatal vitamin A deficiency during sensitive periods of fetal development may represent an etiologically distinct and virtually unexplored causal pathway. Evidence from multiple animal systems clearly shows that fetal inner ear development requires adequate vitamin A nutriture to proceed normally. Inner ear malformations occur in experimentally imposed maternal vitamin A deficiency in multiple species in a dose-response manner. These anomalies are likely due to the loss of retinoic acid-dependent regulation of both hindbrain development and otic morphogenic processes. Based on in vivo evidence in experimental animals, we hypothesize that preventable gestational vitamin A deficiency, especially during early stages of fetal development, may predispose offspring to inner ear malformations and sensorineural hearing loss. As vitamin A deficiency affects an estimated 20 million pregnant women globally, we hypothesize that, in undernourished settings, routine provision of supplemental vitamin A at the recommended allowance throughout pregnancy may promote normal inner ear development and reduce risk of an as yet unknown fraction of sensorineural hearing loss. If our hypothesis proves correct, gestational vitamin A deficiency would represent a potentially preventable etiology of sensorineural hearing loss of substantial public health significance.
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Affiliation(s)
- Susan D Emmett
- Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins University School of Medicine, 601 N Caroline Street, Baltimore, MD 21287, USA; Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, W2041, Baltimore, MD 21205, USA.
| | - Keith P West
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, W2041, Baltimore, MD 21205, USA
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Li S, Wang D, Wang K, Hoffmann-Kuhnt M, Fernando N, Taylor EA, Lin W, Chen J, Ng T. Possible age-related hearing loss (presbycusis) and corresponding change in echolocation parameters in a stranded Indo-Pacific humpback dolphin. J Exp Biol 2013; 216:4144-53. [DOI: 10.1242/jeb.091504] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
SUMMARY
The hearing and echolocation clicks of a stranded Indo-Pacific humpback dolphin (Sousa chinensis) in Zhuhai, China, were studied. This animal had been repeatedly observed in the wild before it was stranded and its age was estimated to be ~40 years. The animal's hearing was measured using a non-invasive auditory evoked potential (AEP) method. Echolocation clicks produced by the dolphin were recorded when the animal was freely swimming in a 7.5 m (width)×22 m (length)×4.8 m (structural depth) pool with a water depth of ~2.5 m. The hearing and echolocation clicks of the studied dolphin were compared with those of a conspecific younger individual, ~13 years of age. The results suggested that the cut-off frequency of the high-frequency hearing of the studied dolphin was ~30–40 kHz lower than that of the younger individual. The peak and centre frequencies of the clicks produced by the older dolphin were ~16 kHz lower than those of the clicks produced by the younger animal. Considering that the older dolphin was ~40 years old, its lower high-frequency hearing range with lower click peak and centre frequencies could probably be explained by age-related hearing loss (presbycusis).
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Affiliation(s)
- Songhai Li
- Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227
- Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology of the Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, China
| | - Ding Wang
- Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology of the Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, China
| | - Kexiong Wang
- Key Laboratory of Aquatic Biodiversity and Conservation of the Chinese Academy of Sciences, Institute of Hydrobiology of the Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, China
| | - Matthias Hoffmann-Kuhnt
- Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227
| | - Nimal Fernando
- Ocean Park Corporation, 180 Wong Chuk Hang Road, Aberdeen, Hong Kong SAR, China
| | - Elizabeth A. Taylor
- Tropical Marine Science Institute, National University of Singapore, 18 Kent Ridge Road, Singapore 119227
| | - Wenzhi Lin
- The Pearl River Estuary Chinese White Dolphin National Nature Reserve, 23 South Road Zhuhai Tangjia, Guangdong, 519080, China
| | - Jialin Chen
- The Pearl River Estuary Chinese White Dolphin National Nature Reserve, 23 South Road Zhuhai Tangjia, Guangdong, 519080, China
| | - Timothy Ng
- Ocean Park Conservation Foundation, Hong Kong, 180 Wong Chuk Hang Road, Aberdeen, Hong Kong SAR, China
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Acquisition of early auditory milestones with a cochlear implant. Int J Pediatr Otorhinolaryngol 2013; 77:1852-5. [PMID: 24063769 DOI: 10.1016/j.ijporl.2013.08.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 08/21/2013] [Accepted: 08/22/2013] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Speech acquisition after cochlear implant is a long process. Various studies have followed the auditory milestones in the early period after implantation. The aim of the present study was to track the development of hearing skills in the early period after cochlear implantation and evaluate which factors influence the process. METHODS 195 records of children implanted in the Hadassah Medical Center were examined retrospectively. Data on etiology, age at implantation and type of implant were collected. In addition, information on the rate of progress was measured: the first time that there was detection and identification of Ling sounds, the first time it was possible to obtain SDT (speech detection threshold), SRT (speech reception threshold) and an audiogram, and the first accurate repetition of VCV (vowel consonant vowel) sounds. RESULTS Results show a consistent pattern of auditory milestone acquisition similar to that of normal development, from milestones that do not require decoding beginning with SDT, detection of Ling sounds followed by an audiogram which requires cooperation, to tasks that involve decoding starting with SRT and repetition of Ling sounds and finally VCV repetition. The children implanted before 24 months of age achieved the auditory milestones later than children implanted between 2 and 6 years, apparently since these tasks involve cognitive abilities which are not yet developed in the youngest children. Previous hearing experience improved the rate of acquisition of the auditory milestones and progress was faster in the second implanted ear compared to the first implanted ear. CONCLUSION More research is needed to address the relationship between acquisition of early auditory milestones and performance with the cochlear implant later on in life.
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Smit E, Liu X, Gill H, Sabir H, Jary S, Thoresen M. Factors associated with permanent hearing impairment in infants treated with therapeutic hypothermia. J Pediatr 2013; 163:995-1000. [PMID: 23885964 DOI: 10.1016/j.jpeds.2013.06.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 05/15/2013] [Accepted: 06/11/2013] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To define the incidence of hearing impairment, document plasma gentamicin concentrations, and identify factors associated with permanent hearing impairment in infants subjected to therapeutic hypothermia for moderate or severe neonatal encephalopathy. STUDY DESIGN Data were collected prospectively in a regional center providing therapeutic hypothermia. Cooled infants at ≥ 36 weeks gestation with moderate or severe neonatal encephalopathy were analyzed if a full dataset was available (n = 108), including clinical variables and gentamicin trough levels. Infants with hearing impairment were identified, and survivors were followed up with neurodevelopmental evaluation at age 18 months. Stepwise logistic regression identified factors associated with hearing impairment. RESULTS Nine infants died, and among the survivors, 10.1% developed a permanent hearing impairment. The trough gentamicin level was above the recommended cutoff of 2 mg/L in 37% of the infants in the entire cohort and in 90% of the infants with hearing impairment. Logistic regression analysis identified high trough gentamicin level, low cord pH, and hypoglycemia (<46.8 mg/dL) in the first postnatal hour as significantly associated with hearing impairment. The need for inotropic support was close to significant (P = .055). CONCLUSION Hearing impairment was a common finding among cooled infants. Plasma gentamicin levels were commonly >2 mg/L. Based on these findings, we propose changes in gentamicin dosing interval and trough level monitoring to minimize the risk of potentially toxic levels in cooled newborns.
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Affiliation(s)
- Elisa Smit
- School of Clinical Sciences, University of Bristol, Bristol, United Kingdom; Neonatal Intensive Care Unit, St Michael's Hospital, University Hospitals Bristol, Bristol, United Kingdom
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Irving S, Trotter MI, Fallon JB, Millard RE, Shepherd RK, Wise AK. Cochlear implantation for chronic electrical stimulation in the mouse. Hear Res 2013; 306:37-45. [PMID: 24055621 DOI: 10.1016/j.heares.2013.09.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 08/23/2013] [Accepted: 09/09/2013] [Indexed: 01/02/2023]
Abstract
The mouse is becoming an increasingly attractive model for auditory research due to the number of genetic deafness models available. These genetic models offer the researcher an array of congenital causes of hearing impairment, and are therefore of high clinical relevance. To date, the use of mice in cochlear implant research has not been possible due to the lack of an intracochlear electrode array and stimulator small enough for murine use, coupled with the difficulty of the surgery in this species. Here, we present a fully-implantable intracochlear electrode stimulator assembly designed for chronic implantation in the mouse. We describe the surgical approach for implantation, as well as presenting the first functional data obtained from intracochlear electrical stimulation in the mouse.
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Affiliation(s)
- S Irving
- Bionics Institute, Melbourne, Australia; Department of Psychology, University of Melbourne, Australia
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Lammens F, Verhaert N, Devriendt K, Debruyne F, Desloovere C. Aetiology of congenital hearing loss: a cohort review of 569 subjects. Int J Pediatr Otorhinolaryngol 2013; 77:1385-91. [PMID: 23835162 DOI: 10.1016/j.ijporl.2013.06.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 05/31/2013] [Accepted: 06/02/2013] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Newborn hearing screening was implemented in Flanders about fifteen years ago. The aim of this study was to determine the aetiology of hearing loss detected by the Flemish screening programme. METHODS From 1997 to 2011, 569 neonates were referred to our tertiary referral centre after failed neonatal screening with Auditory Brainstem Responses. In case hearing loss (HL) was confirmed, further diagnostic testing was launched. A retrospective chart review was performed analysing the degree of HL, risk factor and aetiology. RESULTS Metabolic disorders (0.5%), infectious diseases (35.8%), congenital malformations (6.1%) and genetic abnormalities (19.8%), whether or not syndromic, were retained. In 35% of the subjects no obvious aetiology could be determined in the current study. CONCLUSION In contrast to the literature findings, this series shows a genetic syndromic cause in 80% of the genetic bilateral HL cases. On the other hand connexin positive diagnoses were mostly underrepresented in this study, showing the need for better screening.
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Affiliation(s)
- F Lammens
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospitals of Leuven, Leuven, Belgium.
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Tamayo ML, García N, Bermúdez Rey MC, Morales L, Flórez S, Varón C, Gelvez N. The importance of fundus eye testing in rubella-induced deafness. Int J Pediatr Otorhinolaryngol 2013; 77:1536-40. [PMID: 23911114 DOI: 10.1016/j.ijporl.2013.06.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/27/2013] [Accepted: 06/29/2013] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The purpose of this study was to establish a new approach to improve detection of deafness due to rubella. METHODS Colombian institutes for the deaf were visited by a medical team to perform in all enrolled individuals an ophthalmological examination with emphasis in fundus eye by a retina specialist. In cases where ocular alterations compatible with CRS were found, a medical interview by a clinical geneticist analyzing pre-and postnatal history and a thorough medical examination was done. RESULTS A total of 1383 deaf institutionalized individuals were evaluated in 9 Colombian cities in the period of 2005 to 2006, finding a total of 463 positive cases for salt-and-pepper retinopathy (33.5%), in which rubella could be the etiology of deafness. Medellin, Cartagena, Bucaramanga and Barranquilla were the cities with the highest percentage of Congenital rubella, corresponding to 22.8% of analyzed population. The analysis performed on cases in which reliable prenatal history was obtained in a second appointment (n=88) showed association between positive viral symptoms during pregnancy and salt-and-pepper retinopathy in 62.5% of cases, while both (retinopathy and viral symptoms) were absent in 29.5% of cases; showing a correlation in 92% of cases. CONCLUSIONS The frequency of deafness by rubella obtained by this study is significantly high compared with previous Colombian studies and with international reports. It was possible to correlate the antecedent of symptoms during pregnancy with the presence of salt-and-pepper retinopathy in this deaf population when reliable prenatal history was available, therefore eye testing with emphasis in fundus examination is a good indicator of rubella induced deafness. We propose a new approach in the search of deafness causes, based on a thorough ophthalmologic examination in all deaf people.
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Affiliation(s)
- Marta L Tamayo
- Instituto de Genética Humana, Pontificia Universidad Javeriana, Bogotá, Colombia.
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Sommen M, van Camp G, Boudewyns A. Genetic and clinical diagnosis in non-syndromic hearing loss. HEARING BALANCE AND COMMUNICATION 2013. [DOI: 10.3109/21695717.2013.812380] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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