Publication: Determination of acoustic radiation using bone conductor radioear B71 among Malaysian healthy adults
| dc.contributor.author | Kamarulzaman, Adlin Amanie Mohd | |
| dc.date.accessioned | 2026-02-23T02:47:00Z | |
| dc.date.available | 2026-02-23T02:47:00Z | |
| dc.date.issued | 2025-07 | |
| dc.description.abstract | Bone Conduction (BC) audiometry is a critical component of hearing assessment; however, it is susceptible to artifacts such as the occurrence of acoustic radiation. This occurrence may lead to inaccurate BC thresholds and air-bone gap (ABG) values and potentially affecting final clinical interpretation. Existing research on acoustic radiation has primarily been conducted on Western populations, with limited normative data available for Asian populations. This study aimed to (i) determine the bone conduction thresholds in unoccluded and occluded ear canal conditions at high frequencies (2–8 kHz), (ii) to compare the difference of BC thresholds between unoccluded and occluded ear canal conditions, and (iii) to compare the difference of ABG between these two conditions in Pure Tone Audiometry among Malaysian young adults with normal hearing. A total of 35 normal-hearing participants (70 ears) aged 20–25 years were recruited. Hearing assessments included otoscopy, tympanometry, and pure-tone audiometry. BC thresholds were obtained under both unoccluded and occluded ear canal conditions using a 3M earmuff, and ABG values were calculated. Data analysis using the Wilcoxon signed-rank test showed that BC thresholds were consistently better (lower) under the unoccluded condition and statistically significant differences (p < .001) were observed between both testing conditions across all tested frequencies. Similarly, ABG values were significantly higher in the unoccluded condition (p < .001), suggesting the influence of acoustic radiation on BC measurements. These findings support the need to occlude the ear canal during BC threshold measurements at high frequencies when using the RadioEar B71 bone conductor to minimize the effects of acoustic radiation. Furthermore, this study highlights the importance of developing localized normative data, as anatomical and ethnic differences may influence audiometric outcomes. Establishing population-specific references is essential for improving diagnostic accuracy in clinical audiology among Asian populations. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/23647 | |
| dc.language.iso | en | |
| dc.title | Determination of acoustic radiation using bone conductor radioear B71 among Malaysian healthy adults | |
| dc.type | Resource Types::text::thesis::bachelor thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |