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Reported rates of revision cochlear implant surgery vary in adults and children from 3.8% to 8% with the most common indications being device failure, infection, and migration of the implant or electrode. [43] Disequilibrium and vertigo after CI surgery can occur but the symptoms tend to be mild and short-lived. [44]
The internal implant sends the signals to the electrode array. The design of the electrode array is the key difference between a cochlear implant and an ABI. Whereas the electrode array for a CI is wire-shaped and is inserted into the cochlea, the electrode array of an ABI is paddle-shaped and is placed on the cochlear nucleus of the brainstem. [3]
In cases of profound or total deafness, a cochlear implant is a specialised device that may restore a functional level of hearing. SNHL is at least partially preventable by avoiding environmental noise, ototoxic chemicals and drugs, and head trauma, and treating or inoculating against certain triggering diseases and conditions like meningitis .
A totally implantable cochlear implant (TICI) is a new type of cochlear implant and is currently in development.Unlike a conventional cochlear implant, which has both an internal component (the implant) and an external component (the audio processor), all the components of the TICI - including the microphone and battery - are implanted under the skin. [1]
The following are possible complications from mastoidectomy procedures: [8] Temporary or permanent hearing loss, tinnitus [9] Facial nerve damage [9] Dizziness or vertigo [9] Taste changes [9] Dural injury [8] Cerebrospinal fluid leakage [8] Intracranial complications [10] such as brain abscess, subdural empyema, sigmoid sinus hemorrhage
Conventional ear surgery involves a risk of hearing loss due to the surgical procedure. Ear surgeons may be reluctant to perform surgery on an only hearing ear. [13] The BAHA surgery avoids this risk and may be an appropriate treatment. An extended trial of a BAHA system with a headband prior to surgery led to more realistic expectations.
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