Objective: To investigate the improvement of severe-to-profound hearing-impaired adults received REZ-I cochlear implant and to give an analysis to some Chinese dialect speakers.
Method: With standard assessment table and standard testing program, 48 post-lingual hearing-impaired adults were divided into Mandarin language group (41 cases) and dialect group (7 cases). All of them were tested and scored for their hearing and speech perception abilities after 90 days rehabilitation. Sound field audio-metrics were performed at the same time. Clinical effectiveness of each subject in the two groups were assessed according to criteria, and efficacy index were statistically analyzed.
Result: The total effective rates were 100% in both groups after 90 days hearing and speech perception rehabilitation. The clinical effectiveness were equal and there was no statistic significant differences between the groups.
Conclusion: REZ-I cochlear implantation has similar effect for Chinese dialect spoken adults compared to mandarin spoken adults with post-lingual severe-to-profound hearing loss via appropriate postoperative rehabilitation.