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CI & ME implants

SLHS

QuestionAnswer
CI - A device that electrically stimulates the auditory nerve to provide sound and speech information to someone with severe to profound hearing loss - bypasses the part of the auditory system that does not work (outer hair cells) to directly stimulate AN
Basic parts of a CI External Device: - Microphone - Speech processor - Transmitting Coil Internal Component: - Receiver -Electrode array
CI code for Frequency, amplitude, temporal
CI Team - ENT/Surgeon - Audiologist -Psychologist - Speech pathologist - teacher and parents (for kids) - family support (for adults)
CI candidacy: young children 12-24 months - profound SNHL in both ears - limited benefit from hearing aids - no medical contraindications - high motivation and appropriate parental expectations lowered age of pediatric CI to 9 months
CI Candidacy: Children >2 years old to 17 years old - severe to profound SNHL in both ears - at least 6 month trial with HA - limited benefit from hearing aids -high motivation/parental expectations - lack of progress in development of Aud. skills
CI Candidacy: Adults 18 years of age or older - moderate to profound SNHL in both ears - At least a 3-6 month trial with appropriately fit HA and show limited benefit - high motivation and appropriate expectations
Off-label implanting Implanting patients that do not fall within general candidacy guidelines
Not a candidate - someone who does not meet audiologic criteria - Neural or central difference - Absence of cochlea or AN - Active ME infections - TM perforation with active middle ear disease - Unrealistic expectations
Factors Affecting Performance - Etiology of hearing levels - Age of onset - Duration of deafness - Residual hearing - Nerve survival during surgical procedure - Wear time - Services - language Foundation
Implantable Bone Conduction hearing systems Based on two principles: - Osseointegration - Direct Bone conduction - Age as a factor
Osseointegration The firm anchoring of a surgical implant by the growth of bone around it without fibrous tissue formation at the interface
Atresia - Closure or absence of the ear canal - Typically, a conductive component
Microtia - Small or malformed pinna - May not be able to support to traditional hearing aid
Device type summary - Air conduction hearing aids - Bone conduction hearing aids - Middle ear implants - Cochlear implants
Created by: Livy_Marolda
 

 



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