Journal of Clinical Otolaryngology Head and Neck Surgery

The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery

J Clin Otolaryngol Head Neck Surg 2009; 20(1):28-33

pISSN: 1225-0244, eISSN: 2713-833X

DOI: https://doi.org/10.35420/jcohns.2009.20.1.28

원저

돌발성난청의 예후 추정인자로서 일과성 유발이음향방사의 의의

김대희¹, 고의경¹, 우창기¹, 문미진¹, 공수근¹, 전경명¹^,^*

Significance of Transiently Evoked Otoacoustic Emission as a Prognostic Indicator in Sudden Deafness

Dae-Hee Kim¹, Eui-Kyung Goh¹, Chang-Ki Woo¹, Mi-Jin Mun¹, Soo-Keun Kong¹, Kyong-Myong Chon¹^,^*

¹부산대학교 의학전문대학원 이비인후과학교실

¹Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine, Busan, Korea

^*교신저자: 전경명, 602-739 부산광역시 서구 아미동 1가 10 부산대학교 의학전문대학원 이비인후과학교실 전화： (052) 240-7330· 전송： (051) 246-8668· E-mail： chonkm@pusan.ac.kr

© Copyright 2009 The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Mar 03, 2009; Revised: Mar 31, 2009; Accepted: Apr 16, 2009

Published Online: May 31, 2020

ABSTRACT

Background and Objectives: Idiopathic sudden sensorineural hearing loss (ISHL) remains a controversial topic. So far, there are no proven objective auditory factors to establish prognosis. Transiently otoacoustic emissions (TEOAEs) reflect the functional integrity of the outer hair cells. The aim of this study was to assess the presence of TEOAEs in the early stages of ISHL cases as a prognostic indicator. Materials and Methods: We reviewed the medical or audiological records of 53 patients (53 ears) who were admitted to the Department of Otolaryngology, Pusan National University Hospital from May 2005 to May 2006. Before treatment was started, pure tone audiometry (PTA) and TEOAEs were tested. After treatment was finished, PTA was tested and we determined the degree of improvement. Simultaneously we evaluated age, accompaning symptoms, concurrent diseases, time of initial treatment, initial degree of hearing loss as prognostic indicators. Results: The presence of TEOAEs on early examination was significantly correlated with PTA threshold improvement. TEOAEs were detected in 9 patients and in detected group, 8 patients (88.9%) improved in hearing. However only 21 (47.7%) of non pass 44 patients in TEOAEs had hearing impairment. So there was statistically signi-ficant between hearing impairment of two groups. Other factors were not correlated with PTA improvement. Conclusion: We consider TEOAEs might serve as a clinical tool for prediction of recovery in ISHL cases. Good hearing recovery is considered to be associated with initial degree of hearing loss and presence of TEOAEs. (J Clinical Otolaryngol 2009;20:28–33)

Keywords: 돌발성난청; 일과성 유발이음향방사; 예후

Keywords: Sudden hearing loss; Transiently otoacoustic emissions; Prognosis