Reliability of connectivity for the assessment of hearing perception in cochlear implant recipients

Objective: The cochlear implant (CI) is the gold standard treatment for profound hearing loss with insufficient hearing aid benefit. Using regular words and sentences as verbal stimuli showed a ceiling effect in patients with optimal perceptual abilities. The objectives of the study were: (1) to evaluate the reliability of auditory perception through connectivity, comparing it to the regular audiometry in soundbooth and (2) to analyse the use of logatomes to better assess the perceptual abilities of high-performing patients. Design and study sample: Cross sectional analytic study. Study sample: A total of 32 CI patients with high auditory performances underwent pure-tone and speech audiometry in two methods: (1) in an audiometric booth and (2) via direct streaming to the processor using a connectivity system. Correlation and concordance analyses were performed. Results: Pure-tone audiometry showed a low correlation between the two methods. Speech audiometry revealed a high correlation at 30 dB HL but a low concordance between the two instruments. The evaluation through connectivity showed better results in pure-tone and speech audiometry than those of regular audiometry in soundbooth. The use of logatomes was useful for discriminating patients with better performances. Conclusions: Connectivity might be considered a useful additional method to assess the performance of CI recipients.