Cochlear implant, Hearing aid, Bimodal fitting, Directional microphone
Conditions
Interventions
During two test session bimodal subjects are provided with the latest speech processor for the CI ear and a state-of- the-art hearing aid in the other ear. The bilateral group will be provided with th
Sponsors
Maastricht University Medical Center (MUMC+)
Eligibility
Inclusion criteria
Inclusion criteria: Bimodal Group: 1. capacitated adult (>18 years of age) 2. patient of CI-team South-East Netherlands 3. user of a unilateral cochlear implant (CI) of the brand Advanced Bionics (AB) 4. first fit CI >= 6 months ago 5. wearing CI speech processor (almost) always (i.e. circa 10 hours a day) 6. wearing a contralateral hearing aid >50% of the time (i.e. circa 5 hours a day) 7. able to perform the speech-in-noise test (i.e. speech recognition in quiet 18 years of age) 2. patient of CI-team azM, RadboudUMC or UMCU 3. Former subject in the study NL24660.018.08/NTR1722 who completed the full fuollow-up period of four years since first implantation 4. user of a bilateral cochlear implants (CI’s) of the brand Advanced Bionics (AB) 5. first fit of second CI >= 6 months ago 6. wearing CI speech processor in both ears (almost) always (i.e. circa 10 hours a day) 7. able to perform the speech-in- noise test (i.e. speech recognition in quiet >50%) 8. willing and able to visit hospital and participate in testing 9. agreed to participate in this study (by informed consent) And additionally in case of patient Radboud UMC or UMCU: 1. Agreed to let research team inform own CI-team of participation in current study (by informed consent) 2. Agreed to let research team retrieve basic audiological information from own CI-team (by informed consent)
Exclusion criteria
Exclusion criteria: Bimodal group: 1. non fluent in Dutch 2.<18 years of age or incapacitated 3. bilateral cochlear implant user (CI+CI) Bilateral group: 1. non fluent in Dutch 2. <18 years of age or incapacitated
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome is the effect of microphone configuration on speech recognition performance in noise. Two directional microphone systems will be addressed, a monaural and a binaural system, and compared to the standard omnidirectional microphone setting. The microphone systems will be tested in asymmetric configuration (same setting across ears) and/or asymmetric configuration (different setting across ears). | — |
Secondary
| Measure | Time frame |
|---|---|
| Aside from the primary outcome also listening effort, defined as the effort it takes to listen to speech in noise, will be tested. Furthermore the degree of bimodal benefit will be addressed as well as the effect of noise type, stationary versus fluctuating. Results between the two patient groups, bimodal versus bilateral, will be compared. | — |
Contacts
Public ContactE.M.J. Devocht
Maastricht UMC+ ENT/Audiological Centre PO Box 5800
Outcome results
None listed