Comparing the Effect of Different Hearing Aid Fitting Methods in Bimodal Cochlear Implant Users Purpose The aim of the study was to investigate the effect of 3 hearing aid fitting procedures on provided gain of the hearing aid in bimodal cochlear implant users and their effect on bimodal benefit. Method This prospective study measured hearing aid gain and auditory performance in a ... Research Article
Newly Published
Research Article  |   October 30, 2018
Comparing the Effect of Different Hearing Aid Fitting Methods in Bimodal Cochlear Implant Users
 
Author Affiliations & Notes
  • Jantien L. Vroegop
    Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus Medical Centre, Rotterdam, the Netherlands
  • J. Gertjan Dingemanse
    Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus Medical Centre, Rotterdam, the Netherlands
  • Marc P. van der Schroeff
    Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus Medical Centre, Rotterdam, the Netherlands
  • André Goedegebure
    Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus Medical Centre, Rotterdam, the Netherlands
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Jantien Vroegop: j.l.vroegop@erasmusmc.nl
  • Editor-in-Chief: Sumitrajit (Sumit) Dhar
    Editor-in-Chief: Sumitrajit (Sumit) Dhar×
  • Editor: Monita Chatterjee
    Editor: Monita Chatterjee×
Article Information
Hearing & Speech Perception / Acoustics / Hearing Disorders / Hearing Aids, Cochlear Implants & Assistive Technology / Newly Published / Research Article
Research Article   |   October 30, 2018
Comparing the Effect of Different Hearing Aid Fitting Methods in Bimodal Cochlear Implant Users
American Journal of Audiology, Newly Published. doi:10.1044/2018_AJA-18-0067
History: Received April 13, 2018 , Revised May 30, 2018 , Accepted July 19, 2018
 
American Journal of Audiology, Newly Published. doi:10.1044/2018_AJA-18-0067
History: Received April 13, 2018; Revised May 30, 2018; Accepted July 19, 2018

Purpose The aim of the study was to investigate the effect of 3 hearing aid fitting procedures on provided gain of the hearing aid in bimodal cochlear implant users and their effect on bimodal benefit.

Method This prospective study measured hearing aid gain and auditory performance in a cross-over design in which 3 hearing aid fitting methods were compared. Hearing aid fitting methods differed in initial gain prescription rule (NAL-NL2 and Audiogram+) and loudness balancing method (broadband vs. narrowband loudness balancing). Auditory functioning was evaluated by a speech-in-quiet test, a speech-in-noise test, and a sound localization test. Fourteen postlingually deafened adult bimodal cochlear implant users participated in the study.

Results No differences in provided gain and in bimodal performance were found for the different hearing aid fittings. For all hearing aid fittings, a bimodal benefit was found for speech in noise and sound localization.

Conclusion Our results confirm that cochlear implant users with residual hearing in the contralateral ear substantially benefit from bimodal stimulation. However, on average, no differences were found between different types of fitting methods, varying in prescription rule and loudness balancing method.

Acknowledgments
This work was supported by Cochlear Ltd and Resound Ltd. The authors gratefully acknowledge all participants of the research project. They also wish to thank Teun van Immerzeel, Nienke Homans, and Nariman el Ajaji Madrouni for their contributions to the design of the study, the experimental work, and the data collection.
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