Objective

2

To compare the differences in aided hearing thresholds and speech recognition rates between the later-implanted and the first-implanted sides in children after staged bilateral cochlear implantation (CI)

analyze the factors affecting the rehabilitation outcomes of the later-implanted side versus the first-implanted side.

Methods

2

the aided hearing thresholds and speech recognition rates of ten preschool CI children were tested for both the first-implanted and later-implanted sides

with differences compared using paired t-tests. Pearson correlation analysis was used for the correlation between the speech recognition rate of the first implanted side and the second implanted side

as well as the age of intial implantation and the time interval between implantation.

Results

2

After one month of operation on the post-implantation

the aided hearing threshold of the later-implanted side essentially reached the level of the first-implanted side (25.78±5.65 dB HL)

and there was a significant difference in speech recognition rates between the later-implanted side at 9 months

operation and the first-implanted side at 24 months operation (

P

<

0.05). There was a significant negative correlation between the speech recognition rate at 24 months operation on the first implanted side and the age of the first implantation age (

r

=-0.695

P

<

0.05)

and there was a significant negative correlation between the speech recognition rate at 6 months and 9 months on the second implanted side operation and the implantation interval time (

r

=-0.743

P

<

0.05

r

=-0.793

P

<

0.05).

Conclusion

2

The rehabilitation process of the later-implanted side is faster

and the speech recognition rate is affected by factors such as age

implantation interval time

aided hearing effects

and speech intelligibility.