Study of Variation and Latency of Wave V of Brain Stem Evoked Response Audiometry in North Central India

AbstractThe records of 94 consecutive developmentally retarded children with speech retardation and suspected hearing loss who underwent auditory assessment by both conventional behavioural observation audiometry (BOA) and brain stem evoked response audiometry (BERA) were analysed. In 54 children (57.4 percent) there was good agreement between the results of both techniques leading to a clearcut diagnosis. In 22 children a diagnosis was possible only by the results of BERA as the results of BOA were inconclusive. Of the remaining 18 children, two groups could be identified whose results posed a dilemma. Group 1 (n = 7) consisted of children whose BOA test results differed considerably from their BERA results. Group 2 (n = 11) consisted of children in whom there was no discernible response by BERA while the response by BOA was either inconsistent (n = 5) or not elicitable (n = 6). The specific strategies to be adopted for hearing assessment in these situations are discussed.

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Correlation between serum electrolyte levels and brain stem evoked response audiometry in chronic renal failure: a pilot study

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20204630 ◽

2020 ◽

Vol 6 (11) ◽

pp. 2050

Author(s):

Manish Munjal ◽

Karanpreet Singh ◽

Parth Chopra ◽

Shubham Munjal ◽

Hemant Chopra ◽

...

Keyword(s):

Renal Failure ◽

Chronic Renal Failure ◽

Serum Creatinine ◽

Brain Stem ◽

Normal Serum ◽

Evoked Response ◽

Electrolyte Imbalance ◽

Medical College ◽

Brain Stem Evoked Response ◽

Evoked Response Audiometry

Background: The effect of electrolyte imbalance on hearing thresholds and its objective manifestation, as delayed latencies or inter-peak intervals in evoked response audiometry is studied.Methods: The present prospective study was undertaken in a period of one and a half years, to analyze the audiological profile in patients of chronic renal failure and renal allograft recipients. 60 patients were randomly selected from the out- patient and indoor services of nephrology, urology and oto-rhino-laryngology, Dayanand Medical College and Hospital, Ludhiana. Brain stem evoked response audiometry was performed and the latencies were tabulated. Results: A significant delay in the absolute latency of wave V was noted in hyponatremic patients of CRF on comparison with patients of CRF having a normal serum Na+ levels. The I-V interpeak interval was also seen to be significantly delayed on comparison. A statistically significant delayed I-III inter-peak latency was also observed in hypernatremic patients in comparison to patients having a serum Na+ level in the normal range. No significance of serum creatinine levels and wave latencies was noted on comparison between the three categories of patients of CRF as categorized by their serum creatinine levels.Conclusions: There is a definite deterioration of the audiological function in patients of chronic kidney disease, and some reversal of these abnormalities following a successful renal transplantation; indirectly pointing towards uremic milieu being the culprit.

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Hearing Evaluation of Neonates with Hyperbilirubinemia by Otoacoustic Emissions and Brain Stem Evoked Response Audiometry

Journal of Nepal Paediatric Society ◽

10.3126/jnps.v36i3.12155 ◽

2017 ◽

Vol 36 (3) ◽

pp. 310-313

Author(s):

Swapnil Chandrakant Mirajkar ◽

Surekha Rajadhyaksha

Keyword(s):

Brain Stem ◽

Hearing Impairment ◽

Otoacoustic Emissions ◽

Serum Bilirubin ◽

Evoked Response ◽

Term Neonates ◽

Factors Affecting ◽

Hearing Status ◽

Brain Stem Evoked Response ◽

Evoked Response Audiometry

Introduction: Neonatal hyperbilirubinemia is one of the most important factors affecting the auditory system and can cause sensorineural hearing loss. This study evaluated the hearing status in neonates with hyperbilirubinemia and results obtained from Otoacoustic emissions (OAE) and Brain stem evoked response audiometry (BERA) analysis were compared with each other’s.Material and Methods:This study was performed on fifty eligible term neonates with hyperbilirubinemia requiring either phototherapy or exchange transfusion or both. Hearing analysis was done by OAE and BERA.Results: Out of fifty eligible neonates, twenty one (42%) had hearing impairment as per OAE analysis, eight (16%) had hearing impairment; two (4%) neonate had inconclusive hearing analysis as per BERA analysis. Out of twenty one neonates having hearing impairment by OAE only five had hearing impairment as per BERA analysis. While the eight neonates who had hearing impairment by BERA analysis, five had hearing impairment by OAE.Conclusion: The study showed hearing impairment by OAE analysis in 42% neonates while the BERA analysis showed hearing impairment in 16 % neonates. The increased level of Serum bilirubin has not shown the increase in percentage of hearing impairment.J Nepal Paediatr Soc 2016;36(3):310-313

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