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Distant results of children hearing and speech development assessment after cochlear implantation
Zaytsev A. , Berezniuk V.
State Establishment «Dnipropetrovsk Medical Academy», Otorhinolaryngology, Dnipropetrovsk, Ukraine
Aim: Results assessment of hearing, speech and social children's development after cochlear implantation (CI)
after 5-7 years period.
Methods: Operations have been performed at the ORL-clinic of Dnepropetrovsk Medical Academy since 2006.
73 children, who had implantation five years ago, were assessed. The MedEl implants were implanted (49
implants Combi40+, 24 implants Pulsar and Sonata). The “Russian set of tasks” (by I.Koroleva, 2008) of
international methodology “Evaluation of auditory responses to speech” (EARS) was used. Social and family
conditions were also estimated.
Results: Children implanted at the age before 36 months have significantly better speech perception results
than older children. Patients need constant training with parents and teachers and attending preschool
educational establishments. In 3 years after operation children parsed 20-29 words per minute, after 6 years 32-37 words per minute. Thus, only within 4-5 years after operation, auditory perception of spoken words starts
to progress visibly. Among 58 children at school age, 43 ones (74,1%) study at general school, 11 children
attend musical schools (violin, piano, flute), dance classes. Tempo+ speech processor was replaced by Opus2
for 12 children. And we have got great results: the quality of speech has improved in 1-2 months. The CI
patients, aged 11-17, had more problems, as well as 2 children after meningitis.
Conclusions: CI Results are connected with children age, attending preschool educational establishments,
active parents' participation, and the signal-coding strategy. Only within 4-5 years after operation, auditory
perception of spoken words starts to progress visibly. There are also additional factors: pre-implant residual
hearing, number of electrodes and electrical dynamic ranges used, psychosocial problems, which may influence
on some implanted children results.