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P A, G NV, Sequeira NM, S HN. Effect of Maternal Diabetes Mellitus on Neonatal Hearing. Indian J Otolaryngol Head Neck Surg 2024; 76:1741-1746. [PMID: 38566699 PMCID: PMC10982183 DOI: 10.1007/s12070-023-04393-x] [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: 06/24/2023] [Accepted: 11/18/2023] [Indexed: 04/04/2024] Open
Abstract
Introduction Gestational diabetes is a potential risk factor for neonatal hearing loss. Increased circulating sugars in mothers during pregnancy can impairs the micro circulation and can cause congenital anomalies of the inner ear resulting in congenital hearing loss. This study attempts to find the incidence of neonatal hearing loss among diabetic mothers. Methodology This was a case control study with 86 neonates of diabetic mothers as cases and neonates of non diabetic mothers(n = 86) as controls. Antenatal diabetic history and sugar values of mothers were documented. Hearing status of the neonates were tested using DPOAE test and ABR test. DPOAE test was done on 3rd day and those who did not get a positive response underwent 2nd DPOAE and also ABR test if 2nd DPOAE was negative. Results All neonates underwent DPOAE test and few were lost on follow up. First and second DPOAE showed a statistically significant difference between cases and controls. All babies who underwent ABR test had abnormal waveforms. 98% of cases showed moderate and severe bilateral hearing loss whereas all controls had only mild bilateral hearing loss. Discussion This study showed a significantly higher percentage of abnormal hearing outcome among neonates of diabetic mothers than non diabetic mothers. This could be because of the toxic effects of maternal hyperglycemia on developing auditory system of the fetus. This study emphasis the need for better glycaemic control in diabetic pregnancy, the importance of early and mandatory hearing screening in newborns of diabetic mothers.
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Affiliation(s)
- Amrutha P
- Department of Otorhinolaryngology, Yenepoya Medical College, Deralakatte, Dakshina Kannada, Mangalore, Karnataka India
| | - Nayana V G
- Department of Otorhinolaryngology, Yenepoya Medical College, Deralakatte, Dakshina Kannada, Mangalore, Karnataka India
| | - Nimalka Maria Sequeira
- Department of Audiology and Speech Language Pathology, Yenepoya Medical College Deralakatte, Deralakatte, Dakshina Kannada, Mangalore, Karnataka India
| | - Hemaraj Nayaka S
- Department of Audiology and Speech Language Pathology, Yenepoya Medical College Deralakatte, Deralakatte, Dakshina Kannada, Mangalore, Karnataka India
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Hu Y, Xia Z, Chen P. Follow-up of infants with mild-to-moderate sensorineural hearing loss over three years. Int J Pediatr Otorhinolaryngol 2023; 173:111697. [PMID: 37604100 DOI: 10.1016/j.ijporl.2023.111697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 08/06/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023]
Abstract
OBJECTIVE To observe and analyse the hearing outcome in infants with mild-to-moderate sensorineural hearing loss (SNHL) who failed universal newborn hearing screening (UNHS). METHODS This retrospective cohort analysis included infants with mild-to-moderate SNHL and with complete etiological diagnosis and followed up over three years. RESULTS Out of 96 infants with mild-to-moderate SNHL 72 were stable (75%). Only one case was normal (1.04%), ten cases were improved (10.42%), and 13 were deteriorated (13.54%). The pathogenic mutation of GJB2 was the most common cause (50/96, 52.08%), and most of them were homozygous or complex heterozygous mutations of p.V37I (44/50, 88%). There were 11 cases (11.49%) with large vestibular aqueduct syndrome (LVAS) and nine cases (9.38%) with perinatal risk factors. Infants with GJB2 pathogenic mutation and those without certain etiology mostly had unchanged hearing levels, accounting for 84% (42/50) and 84.61% (22/26), respectively. Hearing deterioration in LVAS was associated with seven cases (63.64%). There was no difference in types of outcomes in perinatal risk factor infants, who were more likely to improve than the other groups, but there were three cases (33.3%) deteriorated to profound hearing loss. Comparison of outcomes of different etiologies showed statistically significant difference (Chi-square = 28.673, p = 0.000). CONCLUSION Normal and improved hearing in infants with mild-to-moderate SNHL was rare before the age of three, unlike in many previous studies, and appropriate intervention is recommended. However, intervention should be adjusted according to the hearing outcomes because of the possibility of improvement or deterioration. The etiological diagnosis of infants with mild-to-moderate SNHL would be helpful for predicting the outcome and managing intervention.
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Affiliation(s)
- Yanling Hu
- Department of Otolaryngology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430016, PR China
| | - Zhongfang Xia
- Department of Otolaryngology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430016, PR China
| | - Ping Chen
- Department of Otolaryngology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, 430016, PR China.
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Capra D, DosSantos MF, Sanz CK, Acosta Filha LG, Nunes P, Heringer M, Ximenes-da-Silva A, Pessoa L, de Mattos Coelho-Aguiar J, da Fonseca ACC, Mendes CB, da Rocha LS, Devalle S, Niemeyer Soares Filho P, Moura-Neto V. Pathophysiology and mechanisms of hearing impairment related to neonatal infection diseases. Front Microbiol 2023; 14:1162554. [PMID: 37125179 PMCID: PMC10140533 DOI: 10.3389/fmicb.2023.1162554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
The inner ear, the organ of equilibrium and hearing, has an extraordinarily complex and intricate arrangement. It contains highly specialized structures meticulously tailored to permit auditory processing. However, hearing also relies on both peripheral and central pathways responsible for the neuronal transmission of auditory information from the cochlea to the corresponding cortical regions. Understanding the anatomy and physiology of all components forming the auditory system is key to better comprehending the pathophysiology of each disease that causes hearing impairment. In this narrative review, the authors focus on the pathophysiology as well as on cellular and molecular mechanisms that lead to hearing loss in different neonatal infectious diseases. To accomplish this objective, the morphology and function of the main structures responsible for auditory processing and the immune response leading to hearing loss were explored. Altogether, this information permits the proper understanding of each infectious disease discussed.
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Affiliation(s)
- Daniela Capra
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos F. DosSantos
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Odontologia (PPGO), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Propriedades Mecânicas e Biologia Celular (PropBio), Departamento de Prótese e Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Carolina K. Sanz
- Laboratório de Propriedades Mecânicas e Biologia Celular (PropBio), Departamento de Prótese e Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Lionete Gall Acosta Filha
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Propriedades Mecânicas e Biologia Celular (PropBio), Departamento de Prótese e Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Priscila Nunes
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Manoela Heringer
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | | | - Luciana Pessoa
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Juliana de Mattos Coelho-Aguiar
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Anatomia Patológica, Hospital Universitário Clementino Fraga Filho (HUCFF), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anna Carolina Carvalho da Fonseca
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | | | | | - Sylvie Devalle
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
| | - Paulo Niemeyer Soares Filho
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vivaldo Moura-Neto
- Laboratório de Morfogênese Celular (LMC), Instituto de Ciências Biomédicas (ICB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Laboratório de Biomedicina do Cérebro, Instituto Estadual do Cérebro Paulo Niemeyer (IECPN), Secretaria de Estado de Saúde, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Neurociência Translacional, Instituto Nacional de Neurociência Translacional (INNT-UFRJ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Anatomia Patológica, Hospital Universitário Clementino Fraga Filho (HUCFF), Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Clabout T, Maes L, Acke F, Wuyts W, Van Schil K, Coucke P, Janssens S, De Leenheer E. Negative Molecular Diagnostics in Non-Syndromic Hearing Loss: What Next? Genes (Basel) 2022; 14:genes14010105. [PMID: 36672845 PMCID: PMC9859074 DOI: 10.3390/genes14010105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
Congenital hearing loss has an impact on almost every facet of life. In more than 50% of cases, a genetic cause can be identified. Currently, extensive genetic testing is available, although the etiology of some patients with obvious familial hearing loss remains unknown. We selected a cohort of mutation-negative patients to optimize the diagnostic yield for genetic hearing impairment. In this retrospective study, 21 patients (17 families) with negative molecular diagnostics for non-syndromic hearing loss (gene panel analysis) were included based on a positive family history with a similar type of hearing loss. Additional genetic testing was performed using a whole exome sequencing panel (WESHL panel v2.0) in four families with the strongest likelihood of genetic hearing impairment. In this cohort (n = 21), the severity of hearing loss was most commonly moderate (52%). Additional genetic testing revealed pathogenic copy number variants in the STRC gene in two families. In summary, regular re-evaluation of hearing loss patients with presumably genetic etiology after negative molecular diagnostics is recommended, as we might miss newly discovered deafness genes. The switch from gene panel analysis to whole exome sequencing or whole genome sequencing for the testing of congenital hearing loss seems promising.
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Affiliation(s)
- Thomas Clabout
- Faculty of Medicine and Health Sciences, Ghent University, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
| | - Laurence Maes
- Faculty of Medicine and Health Sciences, Ghent University, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
| | - Frederic Acke
- Department of Otorhinolaryngology, Ghent University Hospital, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
| | - Wim Wuyts
- Center of Medical Genetics, Antwerp University Hospital and University of Antwerp, Prins Boudewijnlaan 43, B-2650 Edegem, Belgium
| | - Kristof Van Schil
- Center of Medical Genetics, Antwerp University Hospital and University of Antwerp, Prins Boudewijnlaan 43, B-2650 Edegem, Belgium
| | - Paul Coucke
- Center for Medical Genetics, Ghent University, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
| | - Sandra Janssens
- Center for Medical Genetics, Ghent University, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
| | - Els De Leenheer
- Department of Otorhinolaryngology, Ghent University Hospital, Corneel Heymanslaan 10, B-9000 Ghent, Belgium
- Correspondence: ; Tel.: +32-93322332
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Silva VAR, Pauna HF, Lavinsky J, Hyppolito MA, Vianna MF, Leal M, Massuda ET, Hamerschmidt R, Bahmad F, Cal RV, Sampaio ALL, Felix F, Chone CT, Castilho AM. Task force Guideline of Brazilian Society of Otology ‒ hearing loss in children - Part I ‒ Evaluation. Braz J Otorhinolaryngol 2022; 89:159-189. [PMID: 36529647 PMCID: PMC9874360 DOI: 10.1016/j.bjorl.2022.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES To provide an overview of the main evidence-based recommendations for the diagnosis of hearing loss in children and adolescents aged 0 to 18 years. METHODS Task force members were educated on knowledge synthesis methods, including electronic database search, review and selection of relevant citations, and critical appraisal of selected studies. Articles written in English or Portuguese on childhood hearing loss were eligible for inclusion. The American College of Physicians' guideline grading system and the American Thyroid Association's guideline criteria were used for critical appraisal of evidence and recommendations for therapeutic interventions. RESULTS The evaluation and diagnosis of hearing loss: universal newborn hearing screening, laboratory testing, congenital infections (especially cytomegalovirus), genetic testing and main syndromes, radiologic imaging studies, vestibular assessment of children with hearing loss, auditory neuropathy spectrum disorder, autism spectrum disorder, and noise-induced hearing loss. CONCLUSIONS Every child with suspected hearing loss has the right to diagnosis and appropriate treatment if necessary. This task force considers 5 essential rights: (1) Otolaryngologist consultation; (2) Speech assessment and therapy; (3) Diagnostic tests; (4) Treatment; (5) Ophthalmologist consultation.
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Affiliation(s)
- Vagner Antonio Rodrigues Silva
- Universidade Estadual de Campinas (Unicamp), Faculdade de Ciências Médicas, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Campinas, SP, Brazil.
| | - Henrique Furlan Pauna
- Hospital Universitário Cajuru, Departamento de Otorrinolaringologia, Curitiba, PR, Brazil
| | - Joel Lavinsky
- Universidade Federal do Rio Grande do Sul (UFRGS), Departamento de Cirurgia, Porto Alegre, RS, Brazil
| | - Miguel Angelo Hyppolito
- Universidade de São Paulo (USP), Faculdade de Medicina de Ribeirão Preto, Departamento de Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Ribeirão Preto, SP, Brazil
| | - Melissa Ferreira Vianna
- Irmandade Santa Casa de Misericórdia de São Paulo, Departamento de Otorrinolaringologia, São Paulo, SP, Brazil
| | - Mariana Leal
- Universidade Federal de Pernambuco (UFPE), Departamento de Cirurgia, Recife, PE, Brazil
| | - Eduardo Tanaka Massuda
- Universidade de São Paulo (USP), Faculdade de Medicina de Ribeirão Preto, Departamento de Oftalmologia, Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Ribeirão Preto, SP, Brazil
| | - Rogério Hamerschmidt
- Universidade Federal do Paraná (UFPR), Hospital de Clínicas, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Curitiba, PR, Brazil
| | - Fayez Bahmad
- Universidade de Brasília (UnB), Programa de Pós-Graduação em Ciências da Saúde, Brasília, DF, Brazil; Instituto Brasiliense de Otorrinolaringologia (IBO), Brasília, DF, Brazil
| | - Renato Valério Cal
- Centro Universitário do Estado do Pará (CESUPA), Departamento de Otorrinolaringologia, Belém, PA, Brazil
| | - André Luiz Lopes Sampaio
- Universidade de Brasília (UnB), Faculdade de Medicina, Laboratório de Ensino e Pesquisa em Otorrinolaringologia, Brasília, DF, Brazil
| | - Felippe Felix
- Universidade Federal do Rio de Janeiro (UFRJ), Hospital Universitário Clementino Fraga Filho (HUCFF), Departamento de Otorrinolaringologia, Rio de Janeiro, RJ, Brazil
| | - Carlos Takahiro Chone
- Universidade Estadual de Campinas (Unicamp), Faculdade de Ciências Médicas, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Campinas, SP, Brazil
| | - Arthur Menino Castilho
- Universidade Estadual de Campinas (Unicamp), Faculdade de Ciências Médicas, Departamento de Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, Campinas, SP, Brazil
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Cui W, Wang S, Chen B, Fan G. White matter structural network alterations in congenital bilateral profound sensorineural hearing loss children: A graph theory analysis. Hear Res 2022; 422:108521. [PMID: 35660126 DOI: 10.1016/j.heares.2022.108521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 03/22/2022] [Accepted: 05/14/2022] [Indexed: 11/25/2022]
Abstract
Functional magnetic resonance imaging (fMRI) studies have revealed a functional reorganization in patients with sensorineural hearing loss (SNHL). The structural basement of functional changes has also been investigated recently. Graph theory analysis brings a new understanding of the structural connectome and topological features in central neural system diseases. However, little is known about the structural network connectome changes in SNHL patients, especially in children. We explored the differences in topologic organization, rich-club organization, and structural connection between children with congenital bilateral profound SNHL and normal hearing under the age of three using graph theory analysis and probabilistic tractography. Compared with the normal-hearing (NH) group, the SNHL group showed no difference in global and nodal topological parameters. Increased structural connection strength were found in the right cortico-striatal-thalamus-cortical circuity. Decreased cross-hemisphere connections were found between the right precuneus and the left auditory cortex as well as the left subcortical regions. Rich-club organization analysis found increased local connection in the SNHL group. These results revealed structural organizations after hearing deprivation in congenital bilateral profound SNHL children.
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Affiliation(s)
- Wenzhuo Cui
- Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, LN, China
| | - Shanshan Wang
- Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, LN, China
| | - Boyu Chen
- Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, LN, China
| | - Guoguang Fan
- Department of Radiology, The First Affiliated Hospital of China Medical University, Shenyang, LN, China.
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Prevalence of Hearing Impairment in Neonates of Mothers with Diabetes Mellitus: A Cross Sectional Study. Indian J Otolaryngol Head Neck Surg 2022; 74:541-544. [PMID: 36032821 PMCID: PMC9411283 DOI: 10.1007/s12070-021-02376-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 01/05/2021] [Indexed: 11/26/2022] Open
Abstract
This study aims to find out the prevalence of hearing impairment in neonates of mothers with diabetes mellitus. The objective is to assess any correlation between the glycemic control and the development of neonatal hearing impairment. A total of 120 neonates of diabetic mothers were included in the study. Data was collected from hospital medical records, direct interview of parent or care taker and clinical examination of child done whenever possible. 120 Neonates were evaluated by OAE soon after birth. Those who failed the test are evaluated with BERA and results were statistically analysed. In our study prevalence of deafness in neonates of mothers with diabetes mellitus was 4.16%. Prevalence of hearing impairment was higher in neonates of mothers with pre gestational diabetes (9.09%) than gestational diabetes mellitus (3.06%). Mean of HbA1c was higher in mothers of neonates with hearing impairment than those without hearing impairment. Prevalence of deafness in neonates of mothers with diabetes mellitus was 4.16%, which is about sevena times higher than the prevalence of deafness in neonates without any risk factors. Prevalence was higher in neonates of mothers with pre gestational diabetes than neonates of mothers with gestational diabetes mellitus.
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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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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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Etiological Work-up in Referrals From Neonatal Hearing Screening: 20 Years of Experience. Otol Neurotol 2020; 41:1240-1248. [PMID: 32925850 DOI: 10.1097/mao.0000000000002758] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Confirmation of permanent hearing loss in a newborn should be followed by a search for an underlying etiology because this may impact hearing loss management and counselling. METHODS Retrospective chart review of all newborns seen at a tertiary referral center after referral from newborn hearing screening over a 20-year period. The changes in the diagnostic protocol over the years are outlined and the most recent protocol includes targeted next-generation sequencing using a panel for known hearing loss causing genes, in all cases of bilateral sensorineural hearing loss (SNHL). RESULTS Permanent hearing loss was confirmed in 235 of 1,002 neonates. A complete etiological work-up was performed in 138 cases of SNHL (77 bilateral and 61 unilateral), with the underlying cause found in 77.9% and in 67.2% of patients respectively. Genetic causes explained 55 (58.4%) of bilateral cases and in 17 a genetic cause was identified by the gene panel. Pathogenic variants in GJB2 and MYO15A explained most cases of nonsyndromic SNHL. Waardenburg syndrome was the most frequent syndromic cause. Cochlear nerve deficiency and congenital cytomegalovirus infection accounted for the majority of unilateral SNHL.Other causes of congenital hearing loss were conductive hearing loss (n = 12) and auditory neuropathy/dyssynchrony (n = 9). CONCLUSION Implementation of targeted next-generation sequencing in the etiological work-up improves the diagnostic yield in congenital SNHL, leaving only about 20% of bilateral and 30% of unilateral cases unsolved.
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Yasemin Sert U, Kansu Celik H, Canpolat FE, Sımsek GK, Engin Ustun Y. Hearing Screening Test Results of Newborns Conceived by Intracytoplasmic Sperm Injection: A Retrospective Study of Tertiary Referral Center. Fetal Pediatr Pathol 2020; 39:288-296. [PMID: 31441346 DOI: 10.1080/15513815.2019.1651804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: Assisted reproductive technologies (ART), especially intracytoplasmic sperm injection (ICSI), is associated with birth defects. However, there are few reports on hearing screening tests of these babies. We aimed to determine the association between ART and hearing loss in newborns.Materials and methods: This retrospective study examined 246 ICSI newborns between 2013 and 2015. All the patients conceived by ICSI. We examined the hearing screening results of the babies.Results: A total of 25 newborns did not pass the first screening test, including 17 by transient evoked otoacoustic emission (TEOAE) and 8 by auditory brainstem response (ABR). Ten babies did not pass the advanced examination. Total hearing loss affected 4% of ART babies.Conclusion: Hearing screening tests exposed deficient results in 4% of ICSI babies, which is ten times more frequent than spontaneously conceived newborns.
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Affiliation(s)
- Umit Yasemin Sert
- Department of Obstetrics and Gynecology, Zekai Tahir Burak Kadin Sagligi EAH, Ankara, Turkey
| | - Hatice Kansu Celik
- Department of Obstetrics and Gynecology, Zekai Tahir Burak Kadin Sagligi EAH, Ankara, Turkey
| | - Fuat Emre Canpolat
- Department of Neonotolgy, Zekai Tahir Burak Kadin Sagligi EAH, Ankara, Turkey
| | | | - Yaprak Engin Ustun
- Department of Obstetrics and Gynecology, Zekai Tahir Burak Kadin Sagligi EAH, Ankara, Turkey
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CARNEIRO-SOUSA P, GAMBÔA I, DUARTE D, TRIGUEIROS-CUNHA N. Sordera neurosensorial por mutación del gen MYH14. Descripción de un caso. REVISTA ORL 2017. [DOI: 10.14201/orl.16651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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14
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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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15
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Wroblewska-Seniuk KE, Dabrowski P, Szyfter W, Mazela J. Universal newborn hearing screening: methods and results, obstacles, and benefits. Pediatr Res 2017; 81:415-422. [PMID: 27861465 DOI: 10.1038/pr.2016.250] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 09/27/2016] [Indexed: 01/02/2023]
Abstract
The incidence of sensorineural hearing loss ranges from 1 to 3 per 1,000 live births in term healthy neonates, and 2-4 per 100 in high-risk infants, a 10-fold increase. Early identification and intervention with hearing augmentation within 6 mo yields optimal effect. If undetected and without treatment, significant hearing impairment may negatively impact speech development and lead to disorders in psychological and mental behaviors. Hearing screening programs in newborns enable detection of hearing impairment in the first days after birth. Programs to identify hearing deficit have significantly improved over the two decades, and their implementation continues to grow throughout the world. Initially based on risk factors, these programs identified only 50-75% of infants with hearing loss. Current recommendations are to conduct universal hearing screening in all infants. Techniques used primarily include automated auditory brainstem responses and otoacoustic emissions that provide noninvasive recordings of physiologic auditory activity and are easily performed in neonates and infants. The aim of this review is to present the objectives, benefits, and results of newborn hearing screening programs including the pros and cons of universal vs. selective screening. A brief history and the anticipated future development of these programs will also be discussed.
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Affiliation(s)
| | - Piotr Dabrowski
- Department of Otolaryngology and Oncological Laryngology, Poznan University of Medical Sciences, Poznan, Poland
| | - Witold Szyfter
- Department of Otolaryngology and Oncological Laryngology, Poznan University of Medical Sciences, Poznan, Poland
| | - Jan Mazela
- Department of Newborns' Infectious Diseases, Poznan University of Medical Sciences, Poznan, Poland
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Korver AMH, Smith RJH, Van Camp G, Schleiss MR, Bitner-Glindzicz MAK, Lustig LR, Usami SI, Boudewyns AN. Congenital hearing loss. Nat Rev Dis Primers 2017; 3:16094. [PMID: 28079113 PMCID: PMC5675031 DOI: 10.1038/nrdp.2016.94] [Citation(s) in RCA: 287] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Congenital hearing loss (hearing loss that is present at birth) is one of the most prevalent chronic conditions in children. In the majority of developed countries, neonatal hearing screening programmes enable early detection; early intervention will prevent delays in speech and language development and has long-lasting beneficial effects on social and emotional development and quality of life. A diagnosis of hearing loss is usually followed by a search for an underlying aetiology. Congenital hearing loss might be attributed to environmental and prenatal factors, which prevail in low-income settings; congenital infections, particularly cytomegalovirus infection, are also a common risk factor for hearing loss. Genetic causes probably account for the majority of cases in developed countries; mutations can affect any component of the hearing pathway, in particular, inner ear homeostasis (endolymph production and maintenance) and mechano-electrical transduction (the conversion of a mechanical stimulus into electrochemical activity). Once the underlying cause of hearing loss is established, it might direct therapeutic decision making and guide prevention and (genetic) counselling. Management options include specific antimicrobial therapies, surgical treatment of craniofacial abnormalities and implantable or non-implantable hearing devices. An improved understanding of the pathophysiology and molecular mechanisms that underlie hearing loss and increased awareness of recent advances in genetic testing will promote the development of new treatment and screening strategies.
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Affiliation(s)
- Anna M H Korver
- Department of Pediatrics, St Antonius Hospital, PO BOX 2500, 3430 EM Nieuwegein, The Netherlands
| | - Richard J H Smith
- Molecular Otolaryngology and Renal Research Laboratories and the Genetics PhD Program, University of Iowa, Iowa City, Iowa, USA
| | - Guy Van Camp
- Department of Medical Genetics, Antwerp University Hospital, University of Antwerp, Antwerp, Belgium
| | - Mark R Schleiss
- Division of Pediatric Infectious Diseases and Immunology, University of Minnesota Medical School, Minneapolis, Minnesota, USA
| | - Maria A K Bitner-Glindzicz
- Genetics and Genomic Medicine Programme, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Lawrence R Lustig
- Department of Otolaryngology-Head and Neck Surgery, Columbia University Medical Center, New York, New York, USA
| | - Shin-Ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
| | - An N Boudewyns
- Department of Otorhinolaryngology, Head and Neck Surgery, Antwerp University Hospital, University of Antwerp, Antwerp, Belgium
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Forli F, Giuntini G, Bruschini L, Berrettini S. Aetiologic diagnosis of hearing loss in children identified through newborn hearing screening testing. ACTA OTORHINOLARYNGOLOGICA ITALICA 2016; 36:29-37. [PMID: 27054388 PMCID: PMC4825065 DOI: 10.14639/0392-100x-1076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 11/30/2015] [Indexed: 11/23/2022]
Abstract
With the implementation of universal newborn hearing screening (UNHS) programmes and early diagnosis and treatment of hearing problems, the need has clearly emerged to implement and carry out a systematic and coordinated protocol for the aetiological diagnosis of permanent hearing impairment (PHI). Within the framework of the Italian Ministry of Health project CCM 2013 "Preventing Communication Disorders: a Regional Program for early Identification, Intervention and Care of Hearing Impaired Children", it has been decided to consider the problems relative to aetiological diagnosis of child PHI within UNHS programmes. The specific objective was to apply a shared diagnostic protocol that can identify the cause in at least 70% of cases of PHI. For this part of the project, four main recommendations were identified that can be useful for an efficient aetiological diagnosis in children affected by PHI and that can offer valid suggestions to optimise resources and produce positive changes for third-level audiologic centres.
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Affiliation(s)
- F Forli
- Operative Unit of Otorhinolaryngology, Audiology and Phoniatrics, University of Pisa, Italy
| | - G Giuntini
- Operative Unit of Otorhinolaryngology, Audiology and Phoniatrics, University of Pisa, Italy
| | - L Bruschini
- Operative Unit of Otorhinolaryngology, Audiology and Phoniatrics, University of Pisa, Italy
| | - S Berrettini
- Operative Unit of Otorhinolaryngology, Audiology and Phoniatrics, University of Pisa, Italy, Guest Professor at Division of Ear, Nose and Throat Diseases, Dept. Of Clinical Science, Intervention and Technology, Karolinska Istituet, Stockholm, Sweden
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18
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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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Cohen BE, Durstenfeld A, Roehm PC. Viral causes of hearing loss: a review for hearing health professionals. Trends Hear 2014; 18:18/0/2331216514541361. [PMID: 25080364 PMCID: PMC4222184 DOI: 10.1177/2331216514541361] [Citation(s) in RCA: 166] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A number of viral infections can cause hearing loss. Hearing loss induced by these viruses can be congenital or acquired, unilateral or bilateral. Certain viral infections can directly damage inner ear structures, others can induce inflammatory responses which then cause this damage, and still others can increase susceptibility or bacterial or fungal infection, leading to hearing loss. Typically, virus-induced hearing loss is sensorineural, although conductive and mixed hearing losses can be seen following infection with certain viruses. Occasionally, recovery of hearing after these infections can occur spontaneously. Most importantly, some of these viral infections can be prevented or treated. For many of these viruses, guidelines for their treatment or prevention have recently been revised. In this review, we outline many of the viruses that cause hearing loss, their epidemiology, course, prevention, and treatment.
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Affiliation(s)
| | - Anne Durstenfeld
- Department of Surgery, Temple University School of Medicine, Philadelphia, PA, USA
| | - Pamela C Roehm
- Department of Otolaryngology-Head and Neck Surgery, Temple University School of Medicine, Philadelphia, PA, USA
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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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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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Kobayashi M, Inadera H. [Present situation and future perspectives on newborn hearing screening system in Japan]. Nihon Eiseigaku Zasshi 2011; 66:696-703. [PMID: 21996769 DOI: 10.1265/jjh.66.696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Childhood hearing impairment is a serious and relatively common condition. The earlier childhood hearing impairment is diagnosed, the less developmentally disadvantaged children become. Newborn hearing screening (NBS) programs have been implemented in Japan. NBS is important for identifying hearing loss at an early age and for adequate intervention at an early developmental stage. According to a survey questionnaire by the Japan Association of Obstetricians and Gynecologists, 62% of the newborn babies were audiologically and medically examined. The average age of examinees has become younger since the beginning of NBS. Here, we summarized the NBS programs in Japan including behavioral audiometry and examinations of auditory brainstem response, auditory-steady state response, and otoacoustic emissions. NBS can lead to advantages in terms of language developmental outcome for children with hearing impairment. However, there is no sufficient support system existing for children who are advised to undergo further auditory diagnostic tests after NBS. It is necessary for government agencies, medical and educational institutions to communicate together for clarifying their responsibilities in order to support the children with hearing impairment.
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