Earphone and Aided Word Recognition Differences in Cochlear Implant Candidates

Area of Science:

• Audiology
• Otolaryngology
• Hearing Science

Background:

• Cochlear implant evaluations (CIE) assess candidacy for hearing restoration.
• Accurate pre-operative assessment is vital for successful cochlear implantation.
• Current protocols may not fully optimize the evaluation of aided hearing performance.

Purpose of the Study:

• To compare word recognition scores in adults undergoing cochlear implant evaluations (CIE) when measured using earphones versus hearing aids.
• To evaluate the diagnostic utility of earphone-based word recognition scores in predicting cochlear implant candidacy.

Main Methods:

• Retrospective review of audiological data from adult CIEs at a tertiary cochlear implant center.
• Analysis of word recognition scores measured with both earphones and hearing aids.
• Comparison of earphone-to-aided differences (EAD) and their correlation with aided scores.

Main Results:

• A weak positive correlation (r=0.33) was found between earphone and aided word recognition scores.
• Earphone scores were significantly higher than aided scores in over 50% of cases.
• A significant portion of patients with high earphone scores still qualified as cochlear implant candidates based on aided scores.

Conclusions:

• Word recognition scores measured with earphones have limited diagnostic value for patients undergoing CIE.
• Aided word recognition is infrequently measured, potentially limiting information for CI candidacy decisions.
• Routine, earlier measurement of aided word recognition can better guide clinical decisions regarding hearing aid benefit versus cochlear implantation.