scholarly journals Newborn hearing screening with transient evoked otoacoustic emission: a prospective study in a tertiary health care centre

Author(s):  
Shashidhar S. Suligavi ◽  
Prakhar Upadhyay ◽  
Prasen Reddy ◽  
S. S. Doddamani ◽  
M. N. Patil

<p class="abstract"><strong>Background:</strong> As hearing impairment is a hidden disability, it is usually detected after 2-3 years by which time there will be irreversible stunting of the skills and hence rehabilitation procedures like hearing aids, speech therapy are unable to ensure complete development of speech. Therefore hearing impairment should be diagnosed as early as           6 months to ensure timely therapy. The objective of the study is to identify the proportion of incidence of hearing impairment in neonates using transient evoked otoacoustic emissions (TEOAE) as a screening tool.</p><p class="abstract"><strong>Methods:</strong> Prospective study on 800 newborns in a tertiary hospital using TEOAE. Brain stem evoked response audiometry (BERA) was used to confirm hearing loss in neonates who failed TEOAE.  </p><p class="abstract"><strong>Results:</strong> Thirteen out of 800 newborns failed TEOAE test on first screening. Two failed on 2<sup>nd </sup>TEOAE test done after 3-4 weeks. Hearing loss was later confirmed in them with BERA test.</p><strong>Conclusions:</strong> Proportion of hearing loss in our study was 0.25%. Hearing screening should be done as early as possible so that deaf children are rehabilitated early.

2013 ◽  
Author(s):  
Βασίλειος Ψαλτάκος

Although several reports exist concerning the occurrence of hearing loss in patients withdisorders of thyroid function, there are still several unsettled issues, such as theincidence and the severity of hearing impairment, the anatomic site of the auditorypathway involved, and the possible pathogenetic mechanisms. Both congenitalhypothyroidism and environmentally based iodine deficiency are established causes ofhearing loss in humans and rodents. Congenital thyroid deficiency in humans can resultin a profound, hearing deficit, which may be prevented by early hormonal replacementtreatment in infants with hypothyroidism. However, the effect of acute or chronichypothyroidism in adults has not been adequately studied, and most information hasbeen obtained from animal experiments, whereas research in humans has been basicallybased on behavioral audiometry. The use of otoacoustic emissions may provide moreinsight into the hearing function of these patients than pure-tone audiometry, since it isconsidered as a sensitive test of the cochlear status. The aim of this study was toevaluate the hearing in a group of patients with acute hypothyroidism, using bothconventional audiometry and transiently evoked otoacoustic emissions (TEOAEs). Material and methods:A group of 52 patients with thyroid carcinoma who underwent total thyroidectomy wasstudied prospectively, All patients were examined before surgery and 6-8 weekspostoperatively. During this period there was no replacement with levothyroxine and themagnitude of thyroxin depletion was monitored by serum thyroid-stimulating hormone levels. On preoperative encounter with each patient, a detailed questionnaire of historyof hearing loss, tinnitus, vertigo, previous ear infections, noise exposure, medications,and recent upper respiratory tract infection was completed. Patients were excluded ifthey were older than 50 years, in order to avoid the phenomenon of presbycusis, or ifthey had a history of cochleovestibular, vascular or neurologic disease, or any other riskfactor for hearing impairment. Pure-tone audiometry, tympanometry and transientlyevoked otoacoustic emissions were performed. A group of healthy volunteers of similarage and sex were used for comparison.Results:(1) Tympanograms were normal, either on initial testing (75%) or on repeat testing(25%).(2) Audiometry showed elevation of all postoperative hearing thresholds, whereas thethresholds varied significantly across frequency.(3) TEOAE testing showed response signal to noise ratios lower in the postoperativesession (hypothyroid state) than in the preoperative session on all measured frequencies.(4) Emission levels varied significantly across frequency, with maximum responseobserved at 2 kHz.(5) Comparison of significant pure-tone and otoacoustic emission shifts for individualears showed more ears affected in otoacoustic emission testing, indicating subclinicalcochlear involvement.(6) Comparison of hearing thresholds and otoacoustic emission levels between patientsand controls showed significant differences on postoperative testing. Conclusions:Acute hypothyroidism in adults causes elevation of hearing thresholds and reducedotoacoustic emissions. The effect on otoacoustic emissions is greater, indicatingsubclinical damage of the cochlear function.


2019 ◽  
Vol 6 (5) ◽  
pp. 2068
Author(s):  
Ravi Bhatia ◽  
Rajendra Gorwara ◽  
Rajendra Gorwara

Background: Neonatal Hearing Loss has a prevalence that is twice than that of disorders like congenital hypothyroidism, phenyl ketonuria etc. Early detection of hearing impairment is vital since early intervention in form of hearing aids and speech therapy would help lead a child a normal life. The aim of the study was to set up a neonatal hearing screening program and to study the various risk factors which could be associated with hearing loss.Methods: The prospective descriptive study was carried over a period of two years. All neonates before being discharged were subjected to OAE. OAE was done on Oto Read Machine (Intra acoustic) and BERA was done on BERA eclipse machine (Intra acoustic). Babies who failed the first OAE were called back for a repeat OAE at six weeks of age. Babies who failed the second OAE were referred to a trained audiologist for BERA which was performed on BERA Eclipse machine.Results: Out of 1114 neonates screened, 285 neonates failed the first OAE and were called back at six weeks for repeat OAE. Out of the 285 babies who were called for repeat OAE, 258 turned up 27(9.47%) were lost to follow up. Out of the 258 babies who turned up, 245 passed the test while 13 failed the test. 13 Babies who had failed the second OAE screening were called back 1 month later for BERA testing. Out of the 13 babies who turned up for BERA testing, 12 passed the test and 1 failed giving us a prevalence of 0.89 per 1000 population. Of the various risk factors studied only low birth weight was found to be having significant association with hearing loss.Conclusion: Neonatal hearing screening is the need of the hour. Larger multi centric studies are required to establish the prevalence of hearing impairment among newborns.


2005 ◽  
Vol 14 (2) ◽  
Author(s):  
Karl R. White ◽  
Betty R. Vohr ◽  
Sally Meyer ◽  
Judith E. Widen ◽  
Jean L. Johnson ◽  
...  

Purpose: Most newborns are screened for hearing loss, and many hospitals use a 2-stage protocol in which all infants are screened first with otoacoustic emissions (OAEs). In this protocol, no additional testing is done for those passing the OAE screening, but infants failing the OAE are also screened with automated auditory brainstem response (A-ABR). This study evaluated how many infants who failed the OAE and passed the A-ABR had permanent hearing loss (PHL) at 8–12 months of age. Method: A total of 86,634 infants were screened at 7 birthing centers using a 2-stage OAE/A-ABR hearing screening protocol. Of infants who failed the OAE but passed the A-ABR, 1,524 were enrolled in the study. Diagnostic audiologic evaluations were performed on 64% of the enrolled infants (1,432 ears from 973 infants) when they were 8–12 months old. Results: Twenty-one infants (30 ears) who passed the newborn A-ABR hearing screening were identified with PHL when they were 8–12 months old. Most (71%) had mild hearing loss. Conclusions: If all infants were screened for hearing loss using a typical 2-stage OAE/A-ABR protocol, approximately 23% of those with PHL at 8–12 months of age would have passed the A-ABR.


2021 ◽  
Vol 19 (2) ◽  
pp. 21-31
Author(s):  
S. A. Artyushkin ◽  
◽  
I. V. Koroleva ◽  
M. V. Kreisman ◽  
G. S. Tufatulin ◽  
...  

The aim of the study is a comparative analysis of medical and social indicators of audiological care for children with hearing impairments in two regions of the Russian Federation and the development of recommendations for its improvement. Methodology. The study was carried out on the basis of children’s audiology centers in St. Petersburg and Novosibirsk. At the first stage, the organization of audiological care for children in the region and the results of audiological screening were analyzed: coverage, frequency of detection of hearing loss. At the second stage, we analyzed the data from outpatient records of children with hearing impairments registered in audiology centers. The age at which the diagnosis was made, the age of primary hearing aid, the type of hearing aid, and the type of educational organization attended by the child were assessed. At the third stage, a screening examination of hearing was carried out in primary school students of a comprehensive school using otoscopy, tympanometry, registration of otoacoustic emission, and tone threshold audiometry. Results. The analysis showed that all components of medical care in the regions comply with international recommendations. Despite this, less than 10% of children with hearing impairment receive it in accordance with the time standard for early care «1-3-6», which involves the detection of hearing impairment at the age of 1 month, diagnosis of hearing impairment at 3 months, at 6 months - hearing aids and psychological and pedagogical assistance to a child and his family. The main reasons for the late diagnosis of hearing impairments in children and, as a consequence, the late start of their rehabilitation have been established: not all children go through the 1st stage of universal audiological screening of newborns, some children with a positive result of the 1st stage of screening do not enter the 2nd stage for diagnostic examination of hearing; children with auditory neuropathy and hearing loss of various etiologies that occur after birth «drop out» from the current audiological screening procedure. Conclusion. A system of measures is proposed to solve the problem of early detection of hearing impairments in children: 1) control of the 1st stage of audiological screening of newborns and the transfer of information about children to be examined at the 2nd stage to the audiology center; 2) the introduction of additional audiological screenings for children at the age of 1 year and upon admission to school; 3) increasing the awareness of pediatricians, neurologists and the population about the causes, diagnosis and rehabilitation of hearing impairment in children; 4) actions aimed at preventing the occurrence of hearing impairment in children (vaccination, treatment of otitis media, hearing hygiene, etc.).


2005 ◽  
Vol 119 (9) ◽  
pp. 678-683 ◽  
Author(s):  
M D Mohd Khairi ◽  
S Din ◽  
H Shahid ◽  
A R Normastura

The objective of this prospective study was to report on the prevalence of hearing impairment in the neonatal unit population. From 15 February 2000 to 15 March 2000 and from 15 February 2001 to 15 May 2001, 401 neonates were screened using transient evoked otoacoustic emissions (TEOAE) followed by second-stage screening of those infants who failed the initial test. Eight (2 per cent) infants failed one ear and 23 (5.74 per cent) infants failed both ears, adding up to 7.74 per cent planned for second-stage screening. Five out of 22 infants who came for the follow up failed the screening, resulting in a prevalence of hearing impairment of 1 per cent (95 per cent confidence interval [95% CI]: 0.0–2.0). Craniofacial malformations, very low birth weight, ototoxic medication, stigmata/syndromes associated with hearing loss and hyperbilirubinaemia at the level of exchange tranfusion were identified to be independent significant risk factors for hearing impairment, while poor Apgar scores and mechanical ventilation of more than five days were not. In conclusion, hearing screening in high-risk neonates revealed a total of 1 per cent with hearing loss. The changes in the risk profile indicate improved perinatal handling in a neonatal population at risk for hearing disorders.


2021 ◽  
Vol 8 (07) ◽  
pp. 384-390
Author(s):  
Venkat Nagender Reddy Karkala ◽  
Mounika Thopicharla ◽  
Jyothi Ramakrishna ◽  
Rama Krishna Tirumala Bukkapatnam

BACKGROUND Approximately 3 per 1000 live births suffer from congenital hearing loss in India. If detected before the age of 6 months, their mental, social and intellectual growth can be restored by early intervention and rehabilitation. Their speech development and social integration depends highly on early detection of hearing loss, at least before the first birthday. We wanted to screen all new-borns for hearing and assess the incidence of hearing impairment in at risk and no risk cases by using otoacoustic emissions. We also wanted to evaluate the two-stage testing by OAE in screening programme. METHODS The present study was conducted from Feb. 1st 2013 to Jan. 31st 2015. A total of 849 infants have been studied of which 63 had high risk factors. RESULTS The overall incidence of hearing impairment was found to be 3.75 / 1000 births in no-risk group whereas 61.22 / 1000 were found in high risk group. CONCLUSIONS Early detection of hearing loss in infants by otoacoustic emission (OAE) is a reliable tool. It conforms with high precision when done with a two-stage protocol that reduces false apprehensions. KEYWORDS Neonatal Hearing Loss, Universal Screening, Otoacoustic Emissions, Brain Stem Evoked Response Audiometry (BSERA), OAE


2020 ◽  
Vol 39 (8) ◽  
pp. 505-511
Author(s):  
Agnese Feresin ◽  
Martina Bevacqua ◽  
Giulia Del Piero ◽  
Paola Staffa ◽  
Egidio Barbi ◽  
...  

Conductive, mild-moderate hearing impairment in children is a very frequent condition after newborn hearing screening that easily leads to misdiagnosis. Conductive hearing impairment needs an accurate differential diagnosis to avoid inadequate treatments. The paper reports a case of bilateral, sensorineural hearing impairment of moderate degree in a 5-month male infant that was diagnosed after the failure of newborn hearing screening and because of a family history of hearing loss. His parents asked for an advice about the need of hearing aids at the Audiological and Otolaryngology Department. The diagnostic and audiological assessment recognised a conductive, moderate hearing loss associated with tympanic effusion and velar-tube dysfunction. After two months, in the follow-up, the child’s hearing threshold was normal. The case underlines the importance of early identification of hearing impairment and of a complete evaluation programme before indicating any treatment.


1997 ◽  
Vol 111 (11) ◽  
pp. 1018-1021 ◽  
Author(s):  
Eero Vartiainen ◽  
Seppo Karjalainen

AbstractA retrospective review of 168 consecutive children with congenital or early-onset bilateral hearing impairment (>25 dB, 0.5–4 kHz, in the better hearing ear) was conducted. Only 39 per cent of the hearingimpaired children were diagnosed within the first two years of life. The age at diagnosis was related to the severity of hearing loss with profound (>95 dB) hearing losses being detected earlier than the other degrees. However, 37 per cent of children with severe to profound (>70 dB) hearing loss were still not diagnosed until after two years of age. Children with severe to profound hearing loss and with known risk factors were diagnosed earlier than children with the same hearing status but with no known risk factors. It was concluded that the behavioural hearing screening tests used in our well-baby clinics are insufficient and, therefore, more reliable methods, preferably evoked otoacoustic emissions, should be used for universal hearing screening of infants and young children in spite of the great cost.


2020 ◽  
Author(s):  
Willy Nguyen ◽  
Miseung Koo ◽  
Seung Ha Oh ◽  
Jun Ho Lee ◽  
Moo Kyun Park

BACKGROUND Underuse of hearing aids is caused by several factors, including the stigma associated with hearing disability, affordability, and lack of awareness of rising hearing impairment associated with the growing population. Thus, there is a significant opportunity for the development of direct-to-consumer devices. For the past few years, smartphone-based hearing-aid apps have become more numerous and diverse, but few studies have investigated them. OBJECTIVE This study aimed to elucidate the electroacoustic characteristics and potential user benefits of a selection of currently available hearing-aid apps. METHODS We investigated the apps based on hearing-aid control standards (American National Standards Institute) using measurement procedures from previous studies. We categorized the apps and excluded those we considered inefficient. We investigated a selection of user-friendly, low-end apps, EarMachine and Sound Amplifier, with warble-tone audiometry, word recognition testing in unaided and aided conditions, and hearing-in-noise test in quiet and noise-front conditions in a group of users with mild hearing impairment (n = 7) as a pilot for a future long-term investigation. Results from the apps were compared with those of a conventional hearing aid. RESULTS Five of 14 apps were considered unusable based on low scores in several metrics, while the others varied across the range of electroacoustic measurements. The apps that we considered “high end” that provided lower processing latencies and audiogram-based fitting algorithms were superior overall. The clinical performance of the listeners tended to be better when using hearing aid, while the low end hearing-aid apps had limited benefits on the users. CONCLUSIONS Some apps showed the potential to benefit users with limited cases of minimal or mild hearing loss if the inconvenience of relatively poor electroacoustic performance did not outweigh the benefits of amplification.


2013 ◽  
Vol 22 (2) ◽  
pp. 329-331 ◽  
Author(s):  
Louise Hickson ◽  
Ariane Laplante-Lévesque ◽  
Lena Wong

Purpose The authors address 3 questions: (a) What is evidence-based practice (EBP), and why is it important for adults with hearing impairment? (b) What is the evidence about intervention options for adults who fail a hearing screening and are identified with hearing impairment? (c) What intervention options do adults choose when identified with hearing impairment for the first time? Method The 5 steps of the EBP process are discussed in relation to a clinical question about whether hearing aids and communication programs reduce activity limitations and participation restrictions compared with no treatment for adults who fail a hearing screening and are identified with hearing impairment. Results Systematic reviews of the evidence indicate that both hearing aids and communication programs reduce activity limitations and participation restrictions for this population and are therefore appropriate options. A study is then described in which these options were presented to 153 clients identified with hearing impairment for the first time: 43% chose hearing aids, 18% chose communication programs, and the remaining 39% chose not to take any action. Conclusion EBP supports the offer of intervention options to adults who fail a hearing screening and are identified with hearing impairment.


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