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20Q: Combining Electric and Acoustic Hearing - Hearing Preservation and Bimodal Listening

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1.  An EAS/Hybrid system: uses preserved low frequency acoustic hearing in combination with electric stimulation is used with upward sloping hearing losses and/or corner audiograms is FDA-approved for use with children and adults all of the above

2.  Hearing preservation surgery: always uses short electrode arrays is minimally traumatic in order to try and preserve low frequency acoustic hearing is used for all cochlear implant surgeries worldwide cannot be used until FDA approval is complete

3.  Which of the following may be used with an EAS/Hybrid system that is not used with a traditional cochlear implant? telecoil integrated EAS processor magnet battery

4.  Traditional CI sound processors do not currently afford access to interaural time difference (ITD) cues. ITDs play a role in: localization speech understanding in complex listening environments both A and B None of the above

5.  Bimodal hearing means: using 2 cochlear implants using a hearing aid and cochlear implant in the same ear using a hearing aid in the non-implanted ear using 2 hearing aids

6.  Bimodal hearing: has no proven objective benefits but most listeners report subjective benefits provides improved localization in the horizontal plane provides better access to interaural timing differences (ITDs) may provide significant benefit for speech understanding in quiet and noise

7.  Historically, programming cochlear implants with minimal EAS overlap generally meant setting the low frequency cut off for the CI to the frequency where the audiograms thresholds reached: 50 dB HL 70 dB HL 85 to 90 dB HL 110 to 115 dB HL

8.  Gifford et al. (2017) found better speech understanding and less perceived listening difficulty by setting the low frequency CI cutoff to where the audiometric threshold reached: 50 dB HL 70 dB HL 85 to 90 dB HL 110 to 115 dB HL

9.  When audiometric thresholds exceed 70 dB HL: research suggests there is greater inner hair cell damage acoustic hearing always provides better outcomes than electric hearing both A and B none of the above

10.  Regarding fitting the acoustic component of the CI sound processor: verification should be performed via aided threshold testing in the sound booth if manufacturer's first fit is used then verification is not needed the COSI should be used for verification of gain/output settings verification should be performed using probe microphone measures and a validated prescriptive formula such as NAL-NL2