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Audiol > Volume 8(2); 2012 > Article
Audiology 2012;8(2): 212-218.
Published online: December 31, 2012.
doi: http://doi.org/10.21848/audiol.2012.8.2.212
고막천공 대상자의 보청기 적합특성 연구
황혜경1,2, 장현숙3,4
2한림대학교 일반대학원 언어청각학과
3한림대학교 자연과학대학 언어청각학부
A Study of Hearing Aid Fitting Characteristics in Patients with Eardrum Perforation
Hyekyeong Hwang1,2, Hyunsook Jang3,4
1Hearingmedics, Seoul, Korea
2Department of Speech Pathology and Audiology, Hallym University Graduate School, Chuncheon, Korea
3Division of Speech Pathology and Audiology, College of Natural Science
4Research Institute of Audiology & Speech Pathology, Hallym University, Chuncheon, Korea
Correspondence  Hyunsook Jang ,Tel: (033) 248-2210, Fax: (033) 256-3420, Email: hsjang@hallym.ac.kr
Received: November 3, 2012; Revised: December 3, 2012   Accepted: December 18, 2012.  Published online: December 31, 2012.
The purpose of this study was to describe hearing aid fitting characteristics and the effects of fitting when using RECD in patients with a tympanic membrane (TM) perforation. 10 subjects with TM perforations and 8 subjects with intact TM participated in this study. RECDs were measured by using a real ear measurement system and used in fitting hearing aids through Speechmap program. Electroacoustic analysis including OSPL 90 and RESP 50 were performed in both Test-box and On-ear conditions. Aided sound field thresholds were also obtained in both conditions. There were no significant differences in hearing aid fitting characteristics and sound field aided thresholds in both Test-box and On-ear conditions for the intact TM group. However, significant differences were shown at lower frequencies below 1,000 Hz for the perforated ears in these conditions. Individual RECD is needed especially for patients with TM perforation because it can prevent from underamplification. These results suggest that individual RECD measurements are strongly recommended in fitting a hearing aid for its best outcome.
Key Words: Tympanic membrane (TM) perforation, Real ear coupler difference (RECD), Speechmap, Hearing aid fitting
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