Effects of chronic electrical stimulation on patients using a cochlear prosthesis.

Waltzman, S B; Cohen, N L; Shapiro, W H · Otolaryngol Head Neck Surg · 1991

prospective_cohort · Level II

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Abstract

Eighteen patients using the Nucleus multichannel cochlear prosthesis underwent annual evaluations for electrical thresholds, dynamic range, and speech recognition abilities for a period of 1 to 5 years. Results revealed no correlation between length of usage of a cochlear implant and electrical thresholds. The dynamic range was initially wider in the patients with open-set speech recognition, but narrowed in subsequent years. There was a correlation between length of deafness and postoperative performance.

Medical subject headings