Objective

2

To analyze the hearing and speech ability of a cochlear implant child before and after cochlear implant mapping

and to emphasize the importance of precise mapping

and avoid excessive current stimulation.

Method

2

The child had cochlear implant for one year and four months with poor rehabilitation effect

although sound detection was good

accurate hearing and speech articulation was poor. CAP (categories of auditory performance) and SIR (speech intelligibility of rate) were adopted. CAP was 5 and SIR was 1. CI mapping was found that the T-Level and C level were all too high

especially for the band of high frequencies. We made precise mapping

and reduced the level of current stimulation

.

Result

2

After the precise mapping

the rehabilitation effect made remarkable progress

CAP was 7 and SIR was 5.

Conclusion

2

The precise and personalized mapping after cochlear implantation is very important. Not only should we pay attention to the lack of stimulation

but also avoid excessive stimulation.