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9 Cards in this Set
- Front
- Back
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Causes of deafness by Durgs
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Toxic:
* Aminoglycoside antibiotics * Ethacrynic acid(Edecrin - loop diuretic medication -> high blood pressure and the swelling: congestive heart failure, liver; kidney failure) * Aspirin * Chloroquine * Quinidine |
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Causes of deafness by Genetic malformed or absent ears
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* Kartagener syndrome - immotile ciliary syndrome (recurrent respiratory infections, including sinusitis, bronchitis, pneumonia, and otitis media)
* Patau syndrome - Trisomy 13 (Lo-set ears) * Waardenburg syndrome (varying degrees of deafness, minor defects in structures arising from the neural crest, and pigmentation anomalies) * Treacher Collins syndrome - mandibulofacial dysostosis (downward slanting eyes, a small lower jaw, and malformed or absent ears) |
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Causes of deafness by genetic disorder
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* Cockayne syndrome (A.Recessive, DNA damage is not repaired)
* Mohr syndrome (X-linked, progressive deafness) |
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Causes of deafness by genetic abnormal metabolism
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* Otosclerosis
* Osteogenesis imperfecta - Brittle Bone Disease (A.Dominant, Deficiency of Type-I collagen) * Stickler syndrome (A.Dominant, collagenopathy, types II and XI) * Morquio syndrome (mucopolysaccharidosis IV) * Hurler syndrome - MPS I H (α-L-Iduronidase deficiency) * Hunter syndrome – MPS II (Iduronate sulfatase deficiency) |
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Deafness cause by Congenital factors
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* Rubella syndrome
* Congenital atresia of the external auditory canal * Congenital Cytomegalovirus * Congenital perilymphatic fistula * Fetal methyl mercury effects * Fetal iodine deficiency effects |
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Deafness cause by Infectious factors:
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* Meningitis
* Mumps * Measles * Ear infection (otitis media) * Scarlet fever |
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Deafness cause by Traumatic factors:
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* Traumatic perforation of the eardrum
* Skull fracture (temporal bone) * Acoustic trauma such as from explosions, fireworks, gunfire, rock concerts, and earphones * Barotrauma (differences in pressure) |
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Deafness cause by another factors
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# Age-related:
* Age-related hearing loss (presbycusis) # Occupational: Any occupation with exposure to loud noises on a continuous day-to-day basis can result in hearing loss due to nerve end damage. Increased attention to conditions in the work environment has markedly decreased the likelihood of work-related hearing loss. # Other: * Meniere's disease * Acoustic neuroma |
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Temporary hearing loss can be caused by
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* The build-up of wax in the ear canal
* Foreign body lodged in the ear canal * Injury to the head * Allergy * Blocked Eustachian tubes * Scarred or perforated eardrum * Ear infections (chronic otitis externa, chronic otitis media, malignant otitis externa) * Reaction to medication such as aminoglycosides, chloroquine, quinidine |
