Brainstem Evoked Response Audiometry and Acoustic Reflex in High Frequency Hearing Loss

Introduction Diabetes has become a global epidemic. Hearing loss has been long associated with diabetes. Brainstem Evoked Response Audiometry (BERA) is an objective, non-invasive, electro diagnostic test that not only evaluates the functional integrity of the subcortical auditory pathway but also provides topo-diagnosis of hearing loss. This study aims to identify the role BERA in detecting hearing loss early in diabetic patients.Materials and Methods In this study a total of 210 patients were taken and subjected to blood glucose levels followed by PTA were divided into two groups. Group I (n=105) consisted of diabetic patients with sensorineural hearing loss (SNHL) and Group II (n=105) had age and sex matched non-diabetics with SNHL. All the patients were evaluated with BERA.Results All the patients were subjected to Brain Stem Evoked Response Audiometry (BERA). Absolute latency of Wave I, III, V, I-III, III-V and I-V were assessed for both the ears. In both ear Absolute latency were significantly higher in diabetics as compared to non-diabetic patientsConclusion The findings of present study showed that the severity of hearing loss was significantly higher in diabetic patients as compared to non-diabetic controls. Level of glycemic control showed a possible link with severity of hearing loss.

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A study of brainstem evoked response audiometry in children with severe hearing loss

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20191729 ◽

2019 ◽

Vol 5 (3) ◽

pp. 678

Author(s):

Rakhi Kumari ◽

Rajiv Kumar Jain ◽

Dhananjay Kumar

Keyword(s):

Risk Factors ◽

Hearing Loss ◽

Evoked Response ◽

Profound Hearing Loss ◽

Cross Sectional ◽

Prolonged Stay ◽

Severe Hearing Loss ◽

Brainstem Evoked Response Audiometry ◽

History Of ◽

Evoked Response Audiometry

Background: Brainstem evoked response audiometry (BERA) is a non-invasive diagnostic tool which can be used to assess the early hearing loss. The objectives of the study were to find out the risk factors for severe hearing loss in children and to evaluate the role of BERA in early diagnosis of severe hearing loss in children.Methods: The present hospital based cross sectional study was conducted on 105 children suffering from severe hearing loss. Risk factors of hearing loss was assessed in these children and brainstem evoked response audiometry was performed. Results: Out of 105 children studied risk factors for hearing loss were present in 69 cases (65.71%) in which several cases had multiple risk factors. History of prolonged stay at NICU was present in 23 cases (21.9%). 11 (10.5%) cases had suffered from meningitis while history of cerebral malaria was present in 2 cases (1.9%). History of cerebral palsy was present in 5.7% cases. The family history of hearing loss was present in 15 patients (14.3%). Bilateral severe hearing loss was present in 76 cases (72.4%) while in 13 cases (12.4%) there was bilateral severe to profound hearing loss assessed using BERA test.Conclusions: Early detection and timely intervention can not only help prevent this silent handicap of deafness but also contribute to social and economic productivity of a community.

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Electrophysiological assessment of auditory transmission by Brainstem Evoked Response Audiometry in subclinical hypothyroidism without any clinical hearing loss

Journal of Medical Science And clinical Research ◽

10.18535/jmscr/v7i4.174 ◽

2019 ◽

Vol 7 (4) ◽

Author(s):

Dr Piyali Das ◽

Keyword(s):

Hearing Loss ◽

Subclinical Hypothyroidism ◽

Evoked Response ◽

Brainstem Evoked Response Audiometry ◽

Evoked Response Audiometry

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Evoked response audiometry in scrub typhus: prospective, randomised, case–control study

The Journal of Laryngology & Otology ◽

10.1017/s0022215111000107 ◽

2011 ◽

Vol 125 (6) ◽

pp. 567-571 ◽

Cited By ~ 3

Author(s):

J S Thakur ◽

N K Mohindroo ◽

D R Sharma ◽

K Soni ◽

S S Kaushal

Keyword(s):

Hearing Loss ◽

High Frequency ◽

Pure Tone ◽

Case Control Study ◽

Scrub Typhus ◽

Pure Tone Audiometry ◽

Case Control ◽

Evoked Response ◽

Evoked Response Audiometry ◽

Control Study

AbstractObjective:To investigate the hypothesis of cochlear and retrocochlear damage in scrub typhus, using evoked response audiometry.Study design:Prospective, randomised, case–control study.Methods:The study included 25 patients with scrub typhus and 25 controls with other febrile illnesses not known to cause hearing loss. Controls were age- and sex-matched. All subjects underwent pure tone audiometry and evoked response audiometry before commencing treatment.Results:Six patients presented with hearing loss, although a total of 23 patients had evidence of symmetrical high frequency loss on pure tone audiometry. Evoked response audiometry found significant prolongation of absolute latencies of wave I, III, V, and wave I–III interpeak latency. Two cases with normal hearing had increased interpeak latencies. These findings constitute level 3b evidence.Conclusion:Findings were suggestive of retrocochlear pathology in two cases with normal hearing. In other patients, high frequency hearing loss may have led to altered evoked response results. Although scrub typhus appears to cause middle ear cochlear and retrocochlear damage, the presence of such damage could not be fully confirmed by evoked response audiometry.

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Application of otoacoustic emissions and brainstem evoked response audiometry in newborn hearing screening

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20214895 ◽

2021 ◽

Vol 8 (1) ◽

pp. 26

Author(s):

Gangadhara K. S. ◽

Amrutha V. Bhat ◽

Sridhara S.

Keyword(s):

Hearing Loss ◽

Otoacoustic Emissions ◽

Screening Tool ◽

Hearing Screening ◽

Evoked Response ◽

Care Hospital ◽

Newborn Hearing Screening ◽

Brainstem Evoked Response Audiometry ◽

Newborn Hearing ◽

Evoked Response Audiometry

Background: Newborn hearing screening was conducted in a tertiary care hospital in a step by step manner using otoacoustic emissions (OAE) and brainstem evoked response audiometry (BERA) and details were recorded.Methods: A prospective institutional based study was conducted. All the newborns born in the hospital over a period of 18 months from December 2018 to May 2020 were considered in the study. Healthy newborns were screened bedside within 24 hours of delivery and NICU (Neonatal Intensive Care Unit) babies were screened in the NICU. Handheld OAE apparatus was used as the initial screening tool. A total of 3 OAEs were done for babies with a “refer” result in the OAEs, which were done 1 month apart. Babies with a “refer” in the third OAE were subjected for BERA.Results: A total of 14226 babies were screened at 24-48 hours of birth. Among them, 13,069 babies passed the first OAE screening in both ears. Remaining babies were referred for further follow-up. After subsequent follow-ups and successive testing, 11 babies were found to have hearing loss, which was diagnosed within 4-5 months of the child’s birth.Conclusions: Universal newborn hearing screening is the need of the day. OAE is an effective screening tool for newborn hearing loss. When complemented by BERA, majority of congenitally deaf babies can be diagnosed at a very early age. This helps in early intervention.

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A prospective study for hearing screening of 4356 newborns by transient evoked oto-acoustic emissions and brainstem evoked response audiometry: a study of high risk factors for hearing loss

International Journal of Research in Medical Sciences ◽

10.18203/2320-6012.ijrms20171264 ◽

2017 ◽

Vol 5 (4) ◽

pp. 1554 ◽

Cited By ~ 2

Author(s):

Pradeep Kumar Singh ◽

Nishant Kumar ◽

Dheeraj Kumar ◽

Nisha Shrivastava ◽

Abhishek Kumar

Keyword(s):

Risk Factors ◽

Hearing Loss ◽

High Risk ◽

Prospective Study ◽

Acoustic Emissions ◽

Hearing Screening ◽

Evoked Response ◽

Brainstem Evoked Response Audiometry ◽

High Risk Factors ◽

Evoked Response Audiometry

Background: A child’s normal speech and language development depends on the ability to hear. Early detection of hearing loss by screening at or shortly after birth and appropriate intervention are critical to speech, language and cognitive development. Objectives were to describe socio-epidemiological profile of newborns for hearing loss screening by transient evoked oto-acoustic emissions (TEOAE) and brainstem evoked response audiometry (BERA) in Rajendra Institute of Medical Sciences (RIMS), Ranchi, Jharkhand, India during 18 months period (June 2015- November 2016), and to study association between hearing loss and risk factors.Methods: This prospective study was done on 4356 newborns for hearing screening by TEOAE in maternity ward and NICU and BERA in those noted “refer” on retest TEOAE at RIMS, Ranchi, Jharkhand, India during the period of 18 months (June 2015 - November 2016). Follow- up done by visits and phone calls. Templates were generated in MS excel sheet and data analysis was done using SPSS software (version 20).Results: Study showed 3.90/1000 newborns were noted “refer” on retest TEOAE. Hearing loss (BERA- Fail) is slightly more common in males (2.20/1000 newborns), of rural areas (2.44/1000 newborns), tribal ethnicity (2.75/1000 newborns) and those delivered by lower section caesarean section (LSCS) (4.47/1000 newborns). Hearing loss noted in 2.07/1000 newborns. Among high risk newborns 21.41/1000 newborns were noted “refer” on retest TEOAE and 11.53 were found BERA fail.Conclusions: Hearing loss was 21.71 times more common in newborns associated with high risk factors, mainly low birth weight and preterm newborns.

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Effect of Experimental Hypothyroidism on Hearing in Adult Guinea Pigs

Journal of the Royal Society of Medicine ◽

10.1177/014107688307600307 ◽

1983 ◽

Vol 76 (3) ◽

pp. 190-193

Author(s):

M Stearns ◽

P Goodwin

Keyword(s):

Drinking Water ◽

High Frequency ◽

Guinea Pigs ◽

Evoked Response ◽

Brainstem Evoked Response Audiometry ◽

Hearing Thresholds ◽

Evoked Response Audiometry

A group of guinea pigs was rendered hypothyroid using propylthiouracil solution in their drinking water. The animals were hypothyroid for at least 120 days. During this time no change was noted in their hearing thresholds for high-frequency clicks. The audiometric evaluation was performed using brainstem evoked response audiometry.

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TO STUDY THE INCIDENCE OF SENSORINEURAL HEARING LOSS POST MENINGITIS IN NEONATES

International Journal of Advanced Research ◽

10.21474/ijar01/12669 ◽

2021 ◽

Vol 9 (04) ◽

pp. 174-180

Author(s):

Ubaid Ullah Wani ◽

◽

Sheikh Quyoom Hussain ◽

Khursheed Ahmad Wani ◽

◽

...

Keyword(s):

Hearing Loss ◽

Early Detection ◽

Sensorineural Hearing Loss ◽

Public Health Problem ◽

Evoked Response ◽

Sensorineural Hearing ◽

Neonatal Meningitis ◽

Female Ratio ◽

Brainstem Evoked Response Audiometry ◽

Evoked Response Audiometry

Background:Post meningitis hearing impairment is an important public health problem. Neonatal meningitis is an important cause of mortality and morbidity in neonates in future life. An important consequence is hearing loss. Hearing plays a basic and important role in language, speech and intellectual development. Late detection causes irreversible stunting of the language development potential of the child. Early detection and intervention would help to maximize linguistic competence and literacy development for children who are deaf or hard of hearing. The study of brainstem evoked response audiometry provides an opportunity to evaluate the functional integrity of auditory pathway from inner ear to upper brainstem. Aim:This study was conducted to determine the incidence of sensorineural hearing loss following meningitis in neonates. Material and Methods:The present study was conducted in the Department of Pediatrics, Government Medical College Srinagar. All the patients,Term neonates with CSF culture proven bacterial meningitis. , were referred to the Department of ENT, SMHS Hospital Srinagar, of the institution for thorough ENT checkup, to exclude any ear pathology and BERA (Brainstem Evoked Response Audiometry). Results:In our study total number of cases were 87. Majority of our studied children i.e. 47 (54%) were < days of age whereas 40 (46%) children were 8-28 days of aged. The mean age of our study patients was 15.7+3.71.Out of 87 patients in our study, male predominance was observed with 55.2% males versus 44.8% females with a male to female ratio of 1.2:1. Hearing loss was observed in 11 (12.6%) of our study children.Bilateral hearing loss was seen in 5 of the 11 children (5.7%) while as unilateral hearing loss was observed in 6 of the 11 children (6.9%). Out of a total of 11 (12.6%) patients who had hearing loss, 6 (6.9%) were having mild hearing loss, followed by 3 (3.4%) children with profound hearing loss while as moderate and severe hearing loss was observed in 1 (1.1%) patients each. Conclusion: Hearing loss is not a rare complication asociated with meningitis in neonates, early detection and appropriate treatment is needed to prevent language , speech and intellecual damage.

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Study of Brainstem Evoked Response Audiometry to Assess Hearing Loss in High Risk Children Below 5 Years

Scholarly Journal of Otolaryngology ◽

10.32474/sjo.2020.05.000204 ◽

2020 ◽

Vol 5 (1) ◽

Author(s):

Borlingegowda Viswanatha

Keyword(s):

Hearing Loss ◽

High Risk ◽

Evoked Response ◽

Brainstem Evoked Response Audiometry ◽

Evoked Response Audiometry ◽

High Risk Children

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Correlation between brainstem evoked response audiometry with other audiological tests in different types of hearing loss

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20201672 ◽

2020 ◽

Vol 6 (5) ◽

pp. 839

Author(s):

Hemal Shah ◽

Pramod Kharadi ◽

Krunal Patel ◽

Sushil Jha ◽

Abhishek Kumar Singh

Keyword(s):

Hearing Loss ◽

Otoacoustic Emissions ◽

Hearing Threshold ◽

Pure Tone Audiometry ◽

Evoked Response ◽

P Value ◽

Brainstem Evoked Response Audiometry ◽

Distortion Product ◽

Different Types ◽

Evoked Response Audiometry

Background: Brainstem evoked response audiometry (BERA) is most specific and sensitive test for brain stem dysfunction. It is most important objective method for evaluating peripheral auditory system in neonates, infants, sedated and comatose patients and other person who doesn’t understand the language. Objective of the study was to evaluate correlation BERA with other audiological tests in different types of hearing loss as well as to study variations of wave forms in different types of hearing loss.Methods: Patients underwent a complete ENT check up to rule out any actively discharging gears, wax, infection or any middle ear problems. Different audiometric tests: pure tone audiometry (PTA), distortion product otoacoustic emissions, auditory steady-state response (ASSR) and BERA were applied to the patients. Results: The majority of the patients (32 cases) belonged to the age group of 0-5 years. Maximum cases were of sensorineural hearing loss (60%). ASSR was highly sensitive (85.1%) for estimation of hearing threshold and specificity was 100% (p<0.001). BERA was also highly significant for estimation of hearing threshold (sensitivity: 83%; specificity: 92.3%; p value <0.001).Conclusions: BERA has high degree of accuracy in detecting hearing threshold as an objective test but not as much accurate as ASSR. It is more valuable in terms of identification of site and size of the lesion in auditory pathway and identification for the type of the deafness.

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