Who is a candidate?
The following general criteria are used to
determine candidacy for a cochlear implant:
- 12 months through 17 years of age.
- Profound, bilateral sensorineural deafness
(greater than or equal to 90 dB HL).
- Use of appropriately fitted hearing aids for
at least 6 months in children 2 through 17 years of age, or at least
3 months in children 12 through 23 months of age. The minimum duration
of hearing aid use is waived if x-rays indicate ossification (abnormal
bone growth) inside the cochlea.
- Little or no benefit from appropriately fitted
hearing aids. In younger children (4 years of age and younger), lack
of benefit is defined as a failure to reach developmentally appropriate
auditory milestones (such as spontaneous response to name in quiet
or to environmental sounds) measured using the Infant-Toddler Meaningful
Auditory Integration Scale or Meaningful Auditory Integration Scale
OR less than or equal to 20% correct on a simple open-set word recognition
test (Multisyllabic Lexical Neighborhood Test) administered using
monitored live voice (70 dB SPL). In older children (over 4 years
of age), lack of hearing aid benefit is defined as scoring less than
or equal to 12% on a difficult open-set word recognition test (Phonetically
Balanced-Kindergarten Test) OR less than or equal to 30% on an open-set
sentence test (Hearing In Noise Test for Children) administered using
recorded materials in the sound field (70 dB SPL).