바이모달 보청기 적합 문헌 고찰 = A Review of Bimodal Hearing Aid Fitting

다국어 초록 (Multilingual Abstract)

Bimodal hearing refers to the combination of the cochlear implant in one ear and the hearing aid in the opposite ear. Recently, cochlear implant candidacy criteria have been expanded and the number of people receiving cochlear implants with residual hearing has increased, leading to the raised bimodal population. Providing professional fitting services based on systematic bimodal fitting methods or guidelines are essential for the successful bimodal intervention of the hearing impaired. However, there is a lack of evidence-based bimodal fitting method or guideline clinically applicable. In general, bimodal fitting consists of three areas of fitting; cochlear implant mapping, hearing aid fitting, and bimodal fitting. Among them, establishing evidence-based bimodal hearing aid fitting will be a key factor to improve bimodal fitting services of hearing aid centers. The purpose of this study is to review recent literature related to bimodal hearing aid fitting to establish bimodal hearing aid fitting guidelines for hearing aid professionals. This review involves five bimodal hearing aid fitting issues including frequency response, loudness, dynamic compression, frequency transposition, and hearing aid fitting formula. In addition, it described three recent clinical bimodal hearing aid fitting guidelines provided by manufacturers. Two factors contributing to bimodal hearing aid fitting optimization across the studies are frequency response and loudness balance. Conducting loudness balance in bimodal hearing devices and adjusting gains based on the loudness balance tests are one of the important procedures for bimodal fitting optimization. Hearing aid fitting based on wide-band frequency responses and conventional hearing aid formula is recommended for the initial step of the bimodal fitting.

참고문헌 (Reference)

1 오수희, "인공와우를 통한 말지각과 반대편 귀 사용 효과에 대한 최근 연구 고찰" 한국청각언어재활학회 10 (10): 87-98, 2014

2 Oh, S. H., "Top-down processes in simulated electric-acoustic hearing : The effect of linguistic context on bimodal benefit for temporally interrupted speech" 37 (37): 582-592, 2016

3 McDermott, H., "The use of frequency compression by cochlear implant recipients with postoperative acoustic hearing" 21 (21): 380-389, 2010

4 Vermeire, K., "The influence of different speech processor and hearing aid settings on speech perception outcomes in electric acoustic stimulation patients" 29 (29): 76-86, 2008

5 Ching, T. Y., "The effect of auditory experience on speech perception, localization, and functional performance of children who use a cochlear implant and a hearing aid in opposite ears" 44 (44): 677-690, 2005

6 Perreau, A. E., "The contribution of a frequency-compression hearing aid to contralateral cochlear implant performance" 24 (24): 105-120, 2013

7 Dorman, M. F., "The benefits of combining acoustic and electric stimulation for the recognition of speech, voice and melodies" 13 (13): 105-112, 2008

8 Kong, Y. Y., "Speech and melody recognition in binaurally combined acoustic and electric hearing" 117 (117): 1351-1361, 2005

9 Messersmith, J. J., "Reduction in highfrequency hearing aid gain can improve performance in patients with contralateral cochlear implant : A pilot study" 24 (24): 462-468, 2015

10 Potts, L. G., "Recognition and localization of speech by adult cochlear implant recipients wearing a digital hearing aid in the nonimplanted ear(bimodal hearing)" 20 (20): 353-373, 2009

11 Francart, T., "Psychophysics, fitting, and signal processing for combined hearing aid and cochlear implant stimulation" 34 (34): 685-700, 2013

12 Veugen, L. C., "Matching automatic gain control across devices in bimodal cochlear implant users" 37 (37): 260-270, 2016

13 Zhang, T., "Information from the voice fundamental frequency(F0)region accounts for the majority of the benefit when acoustic stimulation is added to electric stimulation" 31 (31): 63-69, 2010

14 Vroegop, J. L., "How to optimally fit a hearing aid for bimodal cochlear implant users : A systematic review" 39 (39): 1039-1045, 2018

15 Veugen, L. C., "Frequency-dependent loudness balancing in bimodal cochlear implant users" 136 (136): 775-781, 2016

16 Leigh, J. R., "Evidence-based guidelines for recommending cochlear implantation for postlingually deafened adults" 55 (55): S3-S8, 2016

17 Davidson, L. S., "Evaluation of hearing aid frequency response fittings in pediatric and young adult bimodal recipients" 26 (26): 393-407, 2015

18 Nittrouer, S., "Emergent literacy in kindergartners with cochlear implants" 33 (33): 683-697, 2012

19 Park, L. R., "Effects of frequency compression hearing aids for unilaterally implanted children with acoustically amplified residual hearing in the nonimplanted ear" 33 (33): e1-e12, 2012

20 Neuman, A. C., "Effect of hearing aid bandwidth on speech recognition performance of listeners using a cochlear implant and contralateral hearing aid(bimodal hearing)" 34 (34): 553-561, 2013

21 Kong, Y. Y., "Cross-frequency integration for consonant and vowel identification in bimodal hearing" 54 (54): 959-980, 2011

22 Vroegop, J. L., "Comparing two hearing aid fitting algorithms for bimodal cochlear implant users" 40 (40): 98-106, 2019

23 Vroegop, J. L., "Comparing the effect of different hearing aid fitting methods in bimodal cochlear implant users" 28 (28): 1-10, 2019

24 Dowell, R., "Cochlear implantation: Optimizing outcomes through evidence-based clinical decisions" 55 (55): S1-S2, 2016

25 Hua, H., "Cochlear implant combined with a linear frequency transposing hearing aid" 23 (23): 722-732, 2012

26 Keilmann, A. M., "Cochlear implant and hearing aid : A new approach to optimizing the fitting in this bimodal situation" 266 (266): 1879-1884, 2009

27 Ching, T. Y., "Binaural-bimodal fitting or bilateral implantation for managing severe to profound deafness : A review" 11 (11): 161-192, 2007

28 Sucher, C. M., "Bimodal stimulation: Benefits for music perception and sound quality" 10 (10): 96-99, 2009

29 Siburt, H. W., "Bimodal programming : A survey of current clinical practice" 24 (24): 243-249, 2015

30 Warren, S. E., "Bimodal hearing in individuals with severe-to-profound hearing loss: Benefits, challenges, and management" 39 (39): 405-413, 2018

31 Lee, J. H., "Bimodal fitting with a cochlear implant and a hearing aid in the opposite ear" 1 (1): 14-18, 2005

32 Cochlear, "Bimodal Hearing. A Guide to Fitting"

33 René H. Gifford, "Bimodal Hearing or Bilateral Cochlear Implants? Ask the Patient" Ovid Technologies (Wolters Kluwer Health) 40 (40): 501-516, 2019

34 Oticon, "Bimodal Hearing Aid Fitting Guidelines"

35 Advanced Bionics, "Bimodal Fitting Quick Guide"

36 Duo-Duo Tao, "Bilaterally Combined Electric and Acoustic Hearing in Mandarin-Speaking Listeners: The Population With Poor Residual Hearing" SAGE Publications 22 : 233121651875789-, 2018

37 McDermott, H., "Benefits of combined acoustic and electric hearing for music and pitch perception" 32 (32): 103-114, 2011

38 Schafer, E. C., "A meta-analysis to compare speech recognition in noise with bilateral cochlear implants and bimodal stimulation" 50 (50): 871-880, 2011