[The development of auditory capability for infants after cochlear implantation].
OBJECTIVE
The purpose of this study is to analyze the auditory capability of infants before and after cochlear implantation by using IT-MAIS questionnaire.


METHODS
Eighty-six prelingually deaf patients participated in this study. They received a cochlear implant at the age of 1 to 3 yr. The audiologists who were trained for the research used the IT-MAIS questionnaire. Audiologists asked for the parents' answers face to face and recorded all the information about the patient's spontaneous auditory behavioural responses including vocalization, behaviour, spontaneous alerting to sound and deriving meaning from sound. The evaluation was performed before operation and 1 month, 3 months, 6 months, 1 year after switch-on.


RESULTS
The scores of question 1 were significantly different between pre-operation and 1, 3, 6, 12 months after switch-on (P = 0.000, 0.000, 0.000, 0.000). The scores of question 2 were significantly different between pre-operation and 6, 12 months after switch-on (P = 0.000, 0.000). The scores of question 3 were significantly different between pre-operation and 3, 6, 12 months after switch-on (P = 0.001, 0.000, 0.000). The scores of question 4 were significantly different between pre-operation and 3, 6, 12 months after switch-on (P = 0.002, 0.000, 0.000). The scores of question 5 were significantly different between pre-operation and 1, 3, 6, 12 months after switch-on (P = 0.046, 0.00, 0.000, 0.000, 0.000). The scores of question 6 were significantly different between pre-operation and 3, 6, 12 months after switch-on (P = 0.037, 0.000, 0.000). The scores of question 7 were significantly different between pre-operation and 3, 6, 12 months after switch-on ( P = 0.000, 0.000, 0.000). The scores of question 8 were significantly different between pre-operation and 6, 12 months after switch-on (P = 0.001, 0.001). The scores of question 9 were significantly different between pre-operation and 3, 6, 12 months after switch-on ( P = 0.023, 0.000, 0.000). The scores of question 10 were significantly different between pre-operation and 12 months after switch-on (P = 0.048).


CONCLUSIONS
Most of the patients showed no consistent response to sound in everyday life before implantation. After cochlear implantation, a significant increase in auditory capability occurred. The children demonstrated faster development of vocalization behaviour and spontaneous alerting to sound than deriving meaning from sound.
Chen
Xueqing
X
Department of Speech and Hearing Rehabilitation, Beijing Institute of Otolaryngology, Affiliated Beijing Tongren Hospital of Capital University of Medical Sciences, Beijing, 100730, China. xueqingchen@sohu.com
Wang
Liang
L
Meng
Lihui
L
Li
Haizhen
H
Kong
Ying
Y
Liu
Bo
B
Mo
Lingyan
L
Wang
Shuo
S
Wu
Yanjun
Y
Han
Na
N
D001302:Audiometry, Speech; D001307:Auditory Perception / Q000502:physiology*; D002675:Child, Preschool; D019929:Cochlear Implantation; D003638:Deafness / Q000151:congenital / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011795:Surveys and Questionnaires