Director of cochlear implant program at KFMC

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Presentation transcript:

Director of cochlear implant program at KFMC Deafness Dr. Abdulrahman Alsanosi Assistant professor King Saud University Otolaryngology consultant Otologist , Neurotologist &Skull Base Surgeon King Abdulaziz University Hospital Director of cochlear implant program at KFMC

Definitions Impairment of sound perception more than 20 (15) decibel on pure tone audiogram.

Hearing loss Types: Conductive hearing loss 1. Concha 2. Ear Canal 3. Drum 4. Ossicular Chain 5. Eustachian Tube

Conductive hearing loss Exteranal canal pathology : Artesia

Inflammatory Acute otitis externa

External canal pathology Wax

External canal pathology Foreign body

External canal pathology Tumors: Osteoma exostosis

Conductive hearing loss Tympanic membrane: Absent Perforated Too thick tympansclerosis Too thin SOM

Conductive hearing loss Ossicular chains Absent &erosion Fixation (otosclerosis Disrupted trauma

Conductive hearing loss EustachianTube dysfunction: Retraction Effusion

Sensorineural hearing loss Two types : Sensory (the pathology is within hair cells in cochlea) Neural (the pathology is with in the auditory nerve and it’s connection

Etiologies Congenital : Mondeni deformity

Sensorineural hearing loss Acquired : Inflammatory -labyrinthitis ,meningitis

Noise exposure

Autoimmune -Cogan syndrome Ototoxic drugs -Aminoglycosides groups ,diruiti,….

Trauma Temporal bone fracture 1.Longitudinal fracture 2.Transeverse fracture

Examination Complete head and neck exam Otoscopic / microscopic ear exam of both ears

Clinical testing of hearing Tuning forks Audiogram battery: Pure tone audiogram Speech audiogram Impedance Acoustic reflex Tympanogram Volume Acoustic reflex decay

pure tone audiogram Normal hearing

Conductive hearing loss

pure tone audiogram Sensorineural hearing loss

Pure tone audiogram Mixed hearing loss

Tympanogram

Degree of hearing impairment

Managemnt of deafness Medical management Hearing aids

Management of deafness Surgery A.Myringotomy and ventilation tube Otitis media with effusion

Management of deafness Surgery B. Myringplasty &tympanoplasty in case of CSOM

Management of deafness C.Ossiculoplassty

Management of deafness BAHA (Bone anchored hearing aid) -Atersia of external canal -Chronic drainage ear not responding to surgery

Management of SNHL Surgery : D. Cochlear implant - prelingual children and postlingual adult -it pass by the external ,middle and inner ear to stimulate auditory nerve directly

D. Cochlear implant

Thank you

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