부산대학교 도서관

The purpose of this study was to clarify the condition of cochlear implant medical care and to obtain basic data to guide future implantations in cochlear implant candidates. The speech perception ability using three cochlear implant devices (CoclearTM, Advanced Bionics, and Med-El) approved and operable in Japan were retrospectively examined using various factors (cochlear implant threshold, monosyllable, word, and sentence listening ability) routinely assessed in our department for adult cochlear implant users. The results of this study are summarized below. Regarding the mean (standard deviation) values for the CoclearTM, Advanced Bionics, and Med-El devices, the cochlear thresholds were 26.3 dB (6.3 dB), 29.6 dB (6.6 dB), and 32.2 dB (5.4 dB) ; the monosyllable listening abilities were 64.1% (20.9%), 60.0% (23.1%), and 60.7% (20.6%) ; the word listening abilities were 71.6% (22.5%), 69.2% (22.5%), 69.2% (26.9%), and 72.7% (21.1%) ; and the sentence listening abilities were 79.7% (24.4%), 72.4% (23.5%), and 74.9% (25.4%), with no significant differences noted. There were significant differences in a few external variables. These findings suggest that specific external variables may have a greater influence on the differences in speech perception ability of cochlear implants than differences in the devices themselves.