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COCHLEAR IMPLANT BENIFITS
They make spoken language a viable
communication option for those who B/L
severe to profound hearing losses.
Improve speech perception
Speech production skills
Contribute to improved reading outcome for
school aged students.
Systematic rehabilitation and education
programming are necessary for CIs
Absolute C/I deafness due to
lesion in 8th nerve / brainstem and
Chronic infections middle
ear/mastoid cavity and tympanic
If there is total/near total, b/l
INDICATIONS FOR COCHLEAR IMPLANTS
Bilateral severe to profound H.L. that
is not adequately treated with std.
Congenital H.L./ prelingual deafness
Acquired H.L./ postlingual deafness
Severe hearing loss that can be aided
and that deteriorates to profound loss
in childhood, adolescence, or
Collaborative effort involving patients, families,
schools, audiologists, speech/hearing therapists,
Candidates must undergo audiologic testing and
Candidates are recommended to undergo a hearing
aid trial to test whether hearing aids are sufficient or
an implant may be more beneficial.
Infants with hearing impairment should also
undergo a trial with hearing aids to assess potential
benefits of amplification.
•MRI and/or CT scanning are needed to
assess anatomy and to evaluate for cochlear,
vestibular, and facial nerve locations, as well
as to confirm the presence of the auditory
nerve (CN VIII).
• Implants for children aged 12 months or
older with profound b/l H.L. and for adults with
similar H.L. who demonstrate limited benefit
from hearing aid use as demonstrated by
speech perception test scores.
AIM OF PRE-OP IMAGING
Evidence of luminal
Additional finding that can
complicate surgical/ post-op
Detect inner ear
Tracing course of facial
nerve in complex cong.
In case of narrow IAM
absence of the bony
cochlear nerve canal at
Detection of high riding
jugular bulb cases.
Presence of round or oval
Potency of cochlear
Complete labyrinthine ossification.
Axial HRCT showing no visualized
Dehiscent jugular bulb. Note the absence
of a bony plate between the anterior wall of
the jugular bulb and the tympanic cavity on
Labyrinthitis ossificans. Cochlea on the left is obliterated by bone after meningitis. Scala
tympani of the cochlea on the right was patent, and the patient underwent successful
implantation with complete electrode insertion
Cochlear malformations. Neural foramen on the right is absent. Right arrow indicates a
rudimentary vestibule. On the left is a severe cochlear malformation (large arrow). Small
arrow indicates the internal auditory canal
Candidate attend weekly speech
therapy sessions, language
expression, social skills, lip reading
and hearing tactics
Meet with the surgeon in the follow-
up period to address any wound-
Prognosis for hearing improvement
and improved quality of life