Download Amplification systems: Hearing aids

Inner ear disorders

Causes: Prenatal, Perinatal and Postnatal
 Prenatal:
Occurs during the development of
the cochlea
 Perinatal:
Occurs during the process of birth
 Postnatal:
Occurs after birth
Prenatal causes
 Syndromes
 Rh
incompatibility
 Drugs
 Viral
infections (rubella, AIDS)
Perinatal causes
 Anoxia
 Toxicity
in mother’s bloodstream
 Prematurity
 Trauma
Postnatal causes

Complications of otitis media

Meningitis/ Encephalitis

Viral infections (mumps, measles, chicken pox)

Syphilis

High fevers

Kidney disease, diabetes
Other causes

Ototoxicity (neomycin, kanamycin, aspirin, furesemide, nicotine,
alcohol)

Vestibulotoxicity (Streptomycin, gentamycin)

Otosclerosis

Barotrauma

Noise induced hearing loss

Surgical complications/Trauma

Sudden/fluctuating hearing loss

Meniere’s disease

Presbycusis
Images courtesy of Gerhardt, K. Work on fetal sheep