Diagnosis and Tests for cochlear Implantation
- Hearing tests such as an audiogram, a graph that charts how you respond to specific sounds
- A hearing aid evaluation
- CT or MRI scans to check the inner ear and hearing nerve. These tests will tell your doctor if your cochlea has a normal shape.
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Procedure of Cochlear Implantation
Before the procedure :
An exam of your external, middle, and inner ear to check for infections or other pathology
Hearing aid evaluation
CT or MRI scans to check the inner ear and Auditory nerve.
General exam and present and past medical history to check fitness
Psychological exam to check inclination for rehabilitation
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During Procedure :
Procedure takes 2.5 to 3 hours & is performed under general anesthesia.
A small incision is made behind the ear and the bone is exposed to allow for insertion and securing of the implant.
The cochlear implant is placed in its posterior position under the skin and muscle and secured
A small opening is made in the cochlea (cochleostomy). The electrode is inserted into the cochlea via the cochleostomy. Full insertion is usually achieved.
The skin is closed and a dressing is applied.
After the procedure :
The patient will not be able to hear immediately after the procedure
Although the internal components are placed, the surgical site needs to heal before the external device is placed.
After four to six weeks the patient called for the fitting of the external components of the implant; activating and programming of the implant
Cochlear implant is a lifelong commitment, the patient must return to the center for regular follow ups , annual check ups
Recipients must undergo rehabilitation program .
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Complications of Cochlear Implantation procedure :
Possible complications may be :
Dizziness or balance problems
Loss of the hearing you have left
Leaks of the fluid around the brain
The device doesn’t work or gets infected, which may mean you’ll have to remove and replace the implant.
Meningitis, an infection of the membranes around the brain
Factors affecting cost of Cochlear Implantation
The cost to the patient depends on a variety of factors like
The hospital, the patient chooses
Fee for the team of doctors
Standard test and diagnostic procedures
Cost of the follow –up and rehabilitation required after the procedure
Cost of the device