Factors associated with auditory neuropathy/dys-synchrony in a developing country

Olusanya, Bolajoko O.; Wirz, Sheila; Luxon, Linda M.

doi:10.1080/16513860802088198

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…Olusanya et al, [21] indicated that more than half (54.5%) of the children diagnosed with ANSD were admitted to hospital during the neonatal period for serious illness. NICU graduates have a significantly higher risk of ANSD as opposed to low-risk well baby populations [7,22].…”

Section: Discussionmentioning

confidence: 99%

Childhood hearing loss and risk profile in a South African population

Swanepoel

Johl

Pienaar

2013

International Journal of Pediatric Otorhinolaryngology

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Objective: To describe the nature of hearing loss and associated risk profile in a representative South African population of infants and children diagnosed at a pediatric referral clinic. Methods:A retrospective review of patient files for a pediatric auditory evoked potential clinic in Pretoria was conducted (January 2007 to December 2011).Collected data included demographical information, risk factors from case history questionnaire, diagnosis (type and degree of hearing loss), documented age of caregiver suspicion and age of first diagnosis. Results:Hearing loss was present in 73% (73/100) of cases evaluated. Permanent hearing losses (SNHL, ANSD & Mixed) constituted 76% of losses. Unilateral hearing losses constituted 8% of SNHL and 20% of conductive hearing loss. ANSD was diagnosed in 21.4% and SNHL in 78.6% of permanent non-conductive hearing loss cases. The most prevalent SNHL risk was family history of hearing loss and for ANSD it was admittance to the NICU for more than 5 days. The majority of the sample was diagnosed with a permanent bilateral SNHL and ANSD after 36 months of age (47%) despite 40% already suspected of having a hearing loss before 12 months of age. Conclusions:A high prevalence of ANSD was found with preventable risk factors often indicated. Age of diagnosis was significantly delayed, evidencing the lack of early hearing detection services in South Africa. The majority of children were diagnosed at ages precluding optimal benefits from early detection and subsequent intervention.3

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Section: Discussionmentioning

confidence: 99%

Childhood hearing loss and risk profile in a South African population

Swanepoel

Johl

Pienaar

2013

International Journal of Pediatric Otorhinolaryngology

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“…There is a strong association of neonatal hyperbilirubinemia in infants with acquired AN and conditions like low socioeconomic status and exposure to toxic chemicals have been postulated to play a role in late onset AN. [ 26 27 ]…”

Section: Discussionmentioning

confidence: 99%

Neurological associations in auditory neuropathy spectrum disorder: Results from a tertiary hospital in South India

Lepcha¹,

Chandran²,

Alexander³

et al. 2015

Ann Indian Acad Neurol

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Aims:To find out the prevalence and types of neurological abnormalities associated in auditory neuropathy spectrum disorder in a large tertiary referral center.Settings and Design:A prospective clinical study was conducted on all patients diagnosed with auditory neuropathy spectrum disorder in the ear, nose, and throat (ENT) and neurology departments during a 17-month period. Patients with neurological abnormalities on history and examination were further assessed by a neurologist to determine the type of disorder present.Results:The frequency of auditory neuropathy spectrum disorder was 1.12%. Sixty percent were found to have neurological involvement. This included cerebral palsy in children, peripheral neuropathy (PN), spinocerebellar ataxia, hereditary motor-sensory neuropathy, spastic paresis, and ponto-bulbar palsy. Neurological lesions did not present simultaneously with hearing loss in most patients. Sixty-six percent of patients with auditory neuropathy spectrum disorder were born of consanguineous marriages.Conclusions:There is a high prevalence of neurological lesions in auditory neuropathy spectrum disorder which has to be kept in mind while evaluating such patients. Follow-up and counselling regarding the appearance of neuropathies is therefore important in such patients. A hereditary etiology is indicated in a majority of cases of auditory neuropathy spectrum disorder.

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The Need for Standardization of Methods for Worldwide Infant Hearing Screening: A Systematic Review

2008

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No uniform case definition presently exists for infant hearing screening programs worldwide especially for minimal hearing loss (HL). This article systematically reviewed the current practices in developing countries for programs aimed at early detection of "disabling" congenital and early-onset HL and found significant variations which undermine comparability of key findings in the reported studies. Implications for the exclusion of minimal HL are explored within the context of the International Classification of Functioning, Disability and Health (ICF) of the World Health Organization and its adapted version for children and youth (ICF-CY). A revised World Health Organization classification that accounts for all categories of HL based on ICF-CY may provide a suitable framework for improved uniformity in reporting standards.

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Factors associated with auditory neuropathy/dys-synchrony in a developing country

Cited by 4 publications

References 22 publications

Childhood hearing loss and risk profile in a South African population

Childhood hearing loss and risk profile in a South African population

Neurological associations in auditory neuropathy spectrum disorder: Results from a tertiary hospital in South India

The Need for Standardization of Methods for Worldwide Infant Hearing Screening: A Systematic Review

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