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20 Cards in this Set
- Front
- Back
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Autosomal dominant inheritance |
Carried by father genes, 50% chance |
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Autosomal hearing disorders |
Von recklinhausens Waardenburgs syndrome |
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Vonrecklinghausen |
Fibrous tumors along nerves, tumor on auditory nerve |
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Waardenburgs |
Abscence of organ of corti, atrophy of spiral ganglion, white strip through hair |
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Autosomal recessive |
Gene present in both parents, 80% of all genetic hearing loss, 25% chance, 50% of children are carriers |
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Recessive disorders |
Ushers, hurlers, pendreds, enlarged vestibular aqueduct |
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Ushers |
Congenital deafness, loss of vision blindness |
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Hurlers |
Hearing loss and growth failure, mental retardation, big forehead kid picture |
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Enlarged vestibular aqueduct syndrome |
Bony malformation of inner ear Sensorineural in children at birth Female to male ratio 3:2 Cochlear candidate |
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X linked |
Recessive on one x linked chromosome Passed from mother to son 2-3% of genetic hearing loss Hunters syndrome |
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Non gentic loss |
Congential Torches |
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Torches |
Toxoplasmosis- cat feces Rubella- maternally contracted prenatal, bilateral sever profound mid frequencies |
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More torches |
Cytomegalovarius- most common viral, maternal through bloodstream, 90% survive Herpes - sexually transmitted to fetus in utero Syphyllus- transmitted in utero |
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Hyperbilirubinemia |
Trauma at birth Low birth weigh -3lbs |
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Bacterial meningitis |
Leading cause childhood sensorineural Cochlea, auditory nerve, cans |
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Mumps |
Unilateral severe profound sensorineural |
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Otoxic medication |
Attack inner ear, high frequencies |
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Meineres |
Excess fluid inner ear, progressive Vertigo, tinnitus Treatment- low sodium, diuretics, destory auditory nerve 3 stages pictures |
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Noise induced |
Almost always bilateral 3000-6000hz first Destroys hair cells |
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Presbycusis |
Age related loss 50+ |
