COCHLEARIMPLANTATIONHassan Alqarni6th year medical studentHassan Alqarni
Hassan Alqarni A cochlear implant (CI) is a surgicallyimplanted electronic device that provides asense of sound to a person who is profoundlydeaf or severely hard of hearing. Cochlearimplants are often called bionic ears.
HistoryHassan Alqarni The first direct stimulation of an acoustic nervewith an electrode was performed in the 1950sby the English-Indian surgeons Baz DaRana and Sonesh Dee
Hearing impairment in KSAHassan Alqarni Around 13% , 10 times more than worldpercatage. Common in south and Norht areas , related tomarriage between relatives.
Parts of the cochlear implant1. Microphones : picks upsound from theenvironment2. Speech processor :selectively filters sound toprioritize audible speech3. Transmitter: transmitspower and the processedsound signals across theskin to the internal deviceby electromagneticinduction1. Receiver andstimulator : converts thesignals into electricimpulses and sends themthrough an internal cableto electrodes,2. array of up to22 electrodes woundthrough the cochlea,which send the impulsesto the nerves in the scalatympani and then directlyto the brain through theauditory nerve system.Hassan AlqarniExternal Internal:
CandidatesHassan Alqarni prime candidate is described as: having severe to profound sensorineural hearing loss in both ears. having a functioning auditory nerve having lived at least a short amount of time without hearing(approximately 70+ decibel hearing loss, on average) having good speech, language, and communication skills, or in thecase of infants and young children, having a family willing to worktoward speech and language skills with therapy not benefitting enough from other kinds of hearing aids, including latestmodels of high power hearing instruments and FM systems having no medical reason to avoid surgery living in or desiring to live in the "hearing world" having realistic expectations about results having the support of family and friends having appropriate services set up for post-cochlear implant auralrehabilitation (through a speech language pathologist, deaf educator, orauditory verbal therapist).
IndicationsHassan Alqarni The main indication for cochlear implantation issevere-to-profound hearing loss that is notadequately treated with standard hearing aids.The clinical conditions that lead to such anindication include various scenarios, as follows: Congenital hearing loss and prelingual deafness Acquired hearing loss and postlingual deafness Severe hearing loss that can be aided and thatdeteriorates to profound loss in childhood,adolescence, or adulthood (perilingual) and coexistswith various degrees of language development
Cost IN Saudi ArabiaHassan Alqarni 200,000 saudi Riyal
EfficacyHassan Alqarni A cochlear implant will not cure deafness, but is aprosthetic substitute for hearing. Some recipients find them very effective, otherssomewhat effective and some feel worse overallwith the implant than without. For people already functional in spoken languagewho lose their hearing, cochlear implants can be agreat help in restoring functional comprehensionof speech, especially if they have only lost theirhearing for a short time.