Update on Bone-Conduction Auditory Brainstem Responses: A Review

Seo, Young Joon; Kwak, Chanbeom; Kim, Saea; Park, Yoon Ah; Park, Kyoung Ho; Han, Woojae

doi:10.7874/jao.2017.00346

Cited by 20 publications

(6 citation statements)

References 23 publications

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“…Our results showed that the threshold difference of the four-tone average between BC PTA and BC ABR was approximately 28 dB. This finding was supported by Muchnik, et al [10] and Seo, et al [15]. However, in previous studies, the average threshold of subjects with normal hearing was approximately 18-19 dBnHL in the BC ABR measurement, and thus the threshold difference betwen BC PTA and BC ABR was 18 dB, which indicates that our study had an approximately 10 dB higher threshold than those in previous studies on BC ABR.…”

Section: Discussionsupporting

confidence: 88%

Better Understanding of Direct Bone-Conduction Measurement: Comparison with Frequency-Specific Bone-Conduction Tones and Brainstem Responses

Kim¹,

Han²,

Park³

et al. 2020

J Audiol Otol

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Background and Objectives: The present study aimed to compare thresholds of direct bone-conduction (BC direct) with those of behaviorally measured BC pure-tone audiometry (PTA) and objectively measured BC auditory brainstem response (ABR) to confirm the clinical feasibility of their relationships.Subjects and Methods: Young adults with normal hearing participated in the study to determine the thresholds from three measurements at four testing frequencies. In the BC direct, the vibrator of a bone-anchored hearing aid softband was placed on the right mastoid of each subject. In both PTA and ABR, a B71 bone oscillator was placed on the subject’s right mastoid. While the subject’s thresholds of BC direct and BC PTA were determined with a clinically routine 5-dB step procedure, BC ABR was conducted to determine the individual’s hearing sensitivity by a peak V of the waveform using tone-burst and click stimuli.Results: The BC direct showed a different pattern between low and high frequencies. Precisely, its thresholds were 13.25 and 12.25 dB HL at 0.5 and 1 kHz, respectively, but 19 and 19.75 dB HL at 2 and 4 kHz, respectively. A significant positive correlation existed between BC direct and PTA at 1 kHz, which was also correlated with ABR.Conclusions: Based on the current data, the thresholds of BC direct were similar to BC PTA at low frequencies and BC ABR at high frequencies. The thresholds of BC direct might be predictable at approximately 5 dB higher (or lower) than that in PTA, although a large data set is required for standardization.

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Section: Discussionsupporting

confidence: 88%

Better Understanding of Direct Bone-Conduction Measurement: Comparison with Frequency-Specific Bone-Conduction Tones and Brainstem Responses

Kim¹,

Han²,

Park³

et al. 2020

J Audiol Otol

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“…This would be meaningful when designing bone conduction devices, which should have a contact with appropriate pressure on the bone. In addition, we could obtain and include data from patients in their 70s and 80s, and could determine new parameters such as temporal bone thickness without re-imaging [15]. Therefore, if sufficient CT data are available in the future, they could complement national reference data (such as the Size Korea data) when developing bone conduction devices for the Korean population.…”

Section: Discussionmentioning

confidence: 99%

“…Of the 406 patients, 221 (54.4%) were males and 185 (45.6%) were females. Patients were divided into groups according to age and included 42 to 63 people in each group (10)(11)(12)(13)(14)(15)(16)(17)(18)(19), 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, and 80-89).…”

Section: Patientsmentioning

confidence: 99%

Measurement of Skull Size on Computed Tomography Images for Developing a Bone Conduction Headset Suitable for the Korean Standard Head Size

Kim

et al. 2020

J Audiol Otol

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Background and Objectives: We aimed to measure the head dimensions on computed tomography (CT) images, to compare them to directly measured head dimensions, and to predict a new parameter of bone thickness for aiding bone conduction implant (BCI) placement. Subjects and Methods: We reviewed the facial and mandibular bone CT images of 406 patients. Their head sizes were analyzed using five parameters included in the 6th Size Korea project, and they were divided into age groups (ranging from the 10s to the 80s). We compared the head length, head width, sagittal arc, bitragion arc, and head circumference in the CT and Size Korea groups. We also added the parameter bone thickness for aiding BCI placement. Results: All the head size parameters measured using CT were significantly smaller than those measured directly, with head length showing the smallest difference at 7.85 mm. The differences in the other four parameters between the two groups according to patient age were not statistically significantly different. Bone thickness had the highest value of 4.89±0.93 mm in the 70s and the lowest value of 4.10±0.99 mm in the 10s. Bone thickness also significantly correlated with head width (p=0.038). Conclusions: Our findings suggested that the CT and direct measurements yielded consistent data. Moreover, CT enabled the measurement of bone sizes, including bone thickness, that are impossible to measure directly. CT measurements may complement direct measurements in the Size Korea data when used for developing bone conduction hearing devices (BCIs and headsets) for the Korean population.

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“…A digital hearing aids process such stimulus differently, C-ABR is not used for aided response evaluation except in cases with bone conduction hearing implants (BAHA). 18 However, Click evoke ABR has its own diagnostic importance. ABR evoked thorough clicks of alternate polarity may help in identifying retro-cochlear pathologies and also the morphology of ABR waveform can lead to the site of lesion.…”

Section: Discussionmentioning

confidence: 99%

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

Munir¹,

Mumtaz

Saqulain

et al. 2019

JSTMU

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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.

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Update on Bone-Conduction Auditory Brainstem Responses: A Review

Cited by 20 publications

References 23 publications

Better Understanding of Direct Bone-Conduction Measurement: Comparison with Frequency-Specific Bone-Conduction Tones and Brainstem Responses

Better Understanding of Direct Bone-Conduction Measurement: Comparison with Frequency-Specific Bone-Conduction Tones and Brainstem Responses

Measurement of Skull Size on Computed Tomography Images for Developing a Bone Conduction Headset Suitable for the Korean Standard Head Size

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

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