scholarly journals Comparison of auditory steady state response (ASSR) & auditory brainstem response (ABR) hearing thresholds in young children.

2019 ◽  
Vol 2 (1) ◽  
pp. 17-21
Author(s):  
Adil Munir ◽  
Nazia Mumtaz ◽  
Ghulam Saqulain ◽  
Munir Ahmad
Keyword(s):  
Steady State ◽  
Hearing Threshold ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Steady State Response ◽  
Female Ratio ◽  
State Response ◽  
Hearing Thresholds ◽  
Auditory Steady State Response ◽  
Brainstem Response

Objective: Hearing loss (HL) with a local prevalence of 5.7%, is the commonest childhood disability, requiring Early Hearing Detection and Intervention (EHDI) programs to reduce the disability burden. Knowing the degree, type and configuration of HL is prerequisite for appropriate amplification, with Automated Auditory Brainstem Responses (ABR) being commonly used for this purpose, however Auditory Steady State Response (ASSR) has been recently introduced in the region. This study was conducted to compare ABR to ASSR, as an early diagnostic tool in children under five years of age. Methodology: This cross-sectional comparative study was performed at the Auditory Verbal Institute of Audiology and Speech (AVIAS) clinics in Rawalpindi and Islamabad, from December 2016 to September 2017. It included thirty-two cases (n=32) who visited AVIAS clinics for hearing assessment and conformed to the investigative protocol using non probability convenient sampling technique, and subjected to both ABR and ASSR for comparative purposes. Correlations were calculated between the thresholds obtained by ABR and ASSR. Results: N=32 children (64 ears) with male female ratio of 2.2:1 and mean age of 33.50±17.73 months were tested with ABR and ASSR for hearing thresholds and correlation coefficient between 2KHz, 4KHz ASSR and average of both with ABR was calculated to be 0.92 and 0.90 and 0.94 respectively. Conclusion: ASSR provides additional frequency specific hearing threshold estimation compared to C-ABR, essentially required for proper setting of amplification devices. 

scholarly journals Comparison of auditory brainstem response and auditory steady state response audiometry by evaluating the hearing thresholds obtained in children with different severity of hearing loss

2019 ◽  
Vol 35 (2) ◽  
Author(s):  
Muhammad Azeem Aslam ◽  
Adeela Javed ◽  
Abdul Moiz
Keyword(s):  
Hearing Loss ◽  
Steady State ◽  
Auditory Brainstem Response ◽  
Auditory Brainstem ◽  
Steady State Response ◽  
State Response ◽  
Hearing Thresholds ◽  
Auditory Steady State Response ◽  
Brainstem Response ◽  
The Mean

Objectives: To compare the hearing thresholds obtained with auditory brainstem response (ABR) and auditory steady state response (ASSR) audiometry in children with hearing loss. Methods: Hearing thresholds were obtained by ABR and ASSR in children who presented with suspicion of deafness at Ear, nose & throat department of Al-Nafees Medical College Hospital Islamabad, between January to August 2018. The mean hearing thresholds obtained by two tests were compared within each category of severity of deafness. Time taken by both tests was also compared. Results: A total of 57 patients (114 ears) were included in the study. Among them 27 (47.4%) were male and 30 (52.6%) were female. The mean age of patients at presentation was 42 months (±30.9) with age range from one to 12 years. Mean hearing thresholds obtained by click ABR, chirp ABR, ASSR (1, 2, 4 kHz) & ASSR (0.5, 1, 2, 4 kHz) was 56.25 (±27.61), 58.88 (±27.44), 58.03 (±21.26) & 56.35 (±22.86) respectively. Mean thresholds were comparable between click ABR & ASSR (1, 2, 4 kHz) and between chirp ABR & ASSR (0.5, 1, 2, 4 kHz) in all degrees of hearing loss categories except in those patients with normal hearing thresholds. The mean time taken by clicks ABR, chirp ABR and ASSR were four minutes seven seconds, three minutes 15 seconds and 16 minutes and 7 seconds respectively. Conclusions: Hearing thresholds obtained by ABR and ASSR are comparable in all categories of severity of hearing loss. The time taken by ABR is less as compared to ASSR. How to cite this:Aslam MA, Javed A, Moiz A. Comparison of auditory brainstem response and auditory steady state response audiometry by evaluating the hearing thresholds obtained in children with different severity of hearing loss. Pak J Med Sci. 2019;35(2):---------.   doi: https://doi.org/10.12669/pjms.35.2.688 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Auditory steady state response in auditory neuropathy

2010 ◽  
Vol 124 (9) ◽  
pp. 950-956 ◽  
Author(s):  
A A Emara ◽  
T A Gabr
Keyword(s):  
Steady State ◽  
Auditory Brainstem Response ◽  
Otoacoustic Emissions ◽  
Hearing Threshold ◽  
Auditory Brainstem ◽  
Auditory Neuropathy ◽  
Steady State Response ◽  
State Response ◽  
Auditory Steady State Response ◽  
Brainstem Response

AbstractReview:Auditory neuropathy is a disorder characterised by preservation of outer hair cell function, with normal otoacoustic emissions and/or cochlear microphonics, but an absent or distorted auditory brainstem response.Purpose:This study aimed to objectively assess hearing thresholds in patients with auditory neuropathy, using the auditory steady state response.Materials and methods:Thirteen patients with auditory neuropathy and 15 normal hearing subjects were examined. Audiological evaluation included basic audiological tests, otoacoustic emissions, auditory brainstem response and auditory steady state response.Results:In the auditory neuropathy patients, the auditory brainstem response was absent in 11 patients, while the auditory steady state response was absent in only three.Conclusion:The auditory steady state response may serve as a valuable objective measure for assessing the hearing threshold across different frequencies in patients with auditory neuropathy. We recommend that auditory steady state response be used to complete the evaluation of patients with auditory neuropathy.

scholarly journals Comparative Study of the Auditory Steady-State Response (ASSR) and Click Auditory Brainstem Evoked Response (ABR) Thresholds among Filipino Infants and Young Children

2009 ◽  
Vol 24 (1) ◽  
pp. 9-12
Author(s):  
Laurence Ian C. Tan ◽  
Maria Rina T. Reyes-Quintos ◽  
Maria Leah C. Tantoco ◽  
Charlotte M. Chiong
Keyword(s):  
Hearing Loss ◽  
Steady State ◽  
Young Children ◽  
Auditory Brainstem Response ◽  
Auditory Brainstem ◽  
Steady State Response ◽  
State Response ◽  
Auditory Steady State Response ◽  
Brainstem Response ◽  
Infants And Young Children

Objective: To compare the results of auditory steady-state response (ASSR) and click auditory brainstem response (click ABR) among infants and young children tested at the Ear Unit of a Tertiary General Hospital.   Methods: Design: Cross-sectional Study Setting: Tertiary General Hospital Population: Within-subject comparisons of click auditory brainstem response (click ABR) thresholds and auditory steady-state response (ASSR) thresholds among 55 infants and young children, 2 months to 35 months of age referred to the Ear Unit for electrophysiologic hearing assessment. Results: Click ABR showed strong positive correlation to all frequencies and averages of ASSR. Highest correlation was noted with the average of 1-4 kHz ASSR results with Pearson r = 0.89 (Spearman r=0.80), the average of 2-4 kHz had strong positive correlation r = 0.88 (0.79). Correlation was consistently strong through all ASSR frequencies (0.5 kHz at r=0.86 (0.74), 1 kHz at r=0.88 (0.78), 2 kHz at r=0. 87 (0.79), 4 kHz at r=0.85 (0.76)). Average differences of click ABR and ASSR thresholds were 8.2±12.9dB at 0.5 kHz, 8.6±12.6dB at 1 kHz, 5.3±11.8dB at 2 kHz and 7.8±13.4dB at 4 kHz. Among patients with no demonstrable waveforms by click ABR with maximal click stimulus, a large percentage presented with ASSR thresholds. Of these, 80.5% (33 of 41) had measurable results at 0.5 kHz with an average of 107.3±11.1dB, 85.4% (35 of 41) at 1 kHz with an average of 110.5±11.8dB, 73.2% (30 of 41) at 2 kHz with an average of 111.2±11.1dB and 63.4% (26 of 41) at 4 kHz with and average of 112.2±8.21dB. Auditory steady-state response results were comparable to auditory brainstem response results in normal to severe hearing loss, and provided additional information necessary for complete audiologic assessment especially among patients with severe to profound hearing loss wherein click ABR showed no responses. Up to 85.4% of patients that would have been noted to have no waveforms by click ABR still demonstrated measurable thresholds by ASSR   Conclusion: Our study suggests that ASSR may be the best available tool for assessing children with severe to profound hearing loss, and is a comparably effective tool in overall hearing assessment for patients requiring electrophysiological testing. The advantages of ASSR over click ABR include: 1) detection of frequency-specific thresholds and; 2) the detection of hearing loss thresholds beyond the limits of click ABR.     Key words: Auditory Steady-State Response, ASSR, Auditory Brainstem-Evoked Response, ABR, Hearing Thresholds, Electrophysiologic Testing  

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