Hearing within the Normal Limit may not Indicate that the Middle Ear is Healthy
Hamizah Ismail, Nik AN Othman, Mohd N Zakaria, Mohd FN Rashid, Noor AA Wahab, Mahamad A Awang
Citation Information :
Ismail H, Othman NA, Zakaria MN, Rashid MF, Wahab NA, Awang MA. Hearing within the Normal Limit may not Indicate that the Middle Ear is Healthy. Int J Otorhinolaryngol Clin 2021; 13 (1):23-25.
In clinical settings, air conduction (AC) thresholds of pure tone audiometry (PTA) represent the severity of hearing loss. If the AC thresholds are within the normal limit (≤20 dB HL), bone conduction (BC) thresholds are not typically determined. In this case report, the importance of having BC thresholds is highlighted (even though AC thresholds are normal) to achieve an accurate diagnosis.
Abdul Wahid SN, Md Daud MK, Sidek D, et al. The performance of distortion product otoacoustic emissions and automated auditory brainstem response in the same ear of the babies in neonatal unit. Int J Pediatr Otorhinolaryngol 2012;76(9):1366–1369. DOI: 10.1016/j.ijporl.2012.06.008.
Katz J, Marshall C, English K, et al., editors. Handbook of clinical audiology. Philadelphia: Lippincott Williams & Wilkins; 2015.
Romli M, Wan Mohamad WN, Awang MA, et al. The clinical value of bilateral bone conduction testing in hearing diagnosis. Indian J Otol 2020;26(3):182–185. DOI: 10.4103/indianjotol.INDIANJOTOL_106_20.
Choi HG, Min C, Lee CH, et al. The relation of sudden sensorineural hearing loss in pediatric patients with recurrent otitis media: a nested case-control study using a national sample cohort. Otol Neurotol 2020;41(7):e836–e841. DOI: 10.1097/MAO.0000000000002655.
Lih AC, Zakaria MN, Mohamad RA, et al. Effects of ethnicity and gender on the middle ear function in Asian adults. Indian J Otol 2017;23(2):94–97. DOI: 10.4103/indianjotol.INDIANJOTOL_27_17.
Awang MA, Zakaria MN. Acoustic reflex testing in clinical audiology: what is the next direction? Int J Disabil Hum Dev 2019;18(2):123–128.
Kazanas SG, Maw AR. Tympanometry, stapedius reflex and hearing impairment in children with otitis media with effusion. Acta Otolaryngol 1994;114(4):410–414. DOI: 10.3109/00016489 409126079.
Zakaria MN, Jalaei B, Wahab NA. Gender and modulation frequency effects on auditory steady state response (ASSR) thresholds. Eur Arch Otorhinolaryngol 2016;273(2):349–354. DOI: 10.1007/s00405-015-3555-3.
Zakaria MN, Jalaei B, Aw CL, et al. Are speech-evoked auditory brainstem response (speech-ABR) outcomes influenced by ethnicity? Neurol Sci 2016;37(6):943–948. DOI: 10.1007/s10072-016-2522-0.