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Cochlear implants in children: physiological considerations.

¹University College Hospital, London, U.K.

International Journal of Pediatric Otorhinolaryngology

|May 1, 1988

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Electrocochleography effectively assesses neural survival for cochlear implants in adults. This method can help identify profoundly deaf children who may benefit from cochlear implant surgery.

Area of Science:

Otolaryngology
Audiology
Neurosurgery

Background:

Cochlear implants are standard for adult acquired profound sensorineural deafness but controversial in children.
A 1979 report highlighted the need for improved management of profoundly deaf children.
Assessing neural survival is crucial for determining cochlear implant candidacy.

Purpose of the Study:

To evaluate transtympanic electrocochleography for estimating neural survival in adults and children.
To determine the potential benefit of cochlear implants for congenitally deaf children.
To suggest appropriate surgical techniques for pediatric cochlear implantation.

Main Methods:

Transtympanic electrocochleography was used in adults undergoing assessment for a U.C.H./R.N.I.D. single-channel extracochlear implant.

Related Experiment Videos

The same method was applied to profoundly deaf children referred from a pediatric hearing assessment clinic.

Effectiveness in adults was validated by electrical stimulation of the cochlea.

Main Results:

Electrocochleography proved significantly effective in judging neural survival in adults.
The findings were extrapolated to the pediatric group to estimate potential implant candidates.
This suggests a proportion of congenitally deaf children may benefit from cochlear implants.

Conclusions:

Electrocochleography is a valuable tool for assessing neural survival in cochlear implant candidates.
Careful selection of techniques is necessary to avoid cochlear and middle ear damage in pediatric implantation.
Further research is warranted to optimize cochlear implant outcomes in children.