The audio lecture begins with slide 11 Four types of hearing disorders Conductive Sensorineural Central Conversion A Conductive loss Conductive losses occur in either the outer or middle ear Generally these types of disorders interfere with the conduction of sound vibrations to the in ID: 774667
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Slide1
The following presentation concerns the 4 types of hearing losses. You will need a set of speakers or headphones to listen to the audio lecture concerning certain types of disorders.
The audio lecture begins with slide # 11.
Slide2Four types of hearing disorders
Conductive
Sensorineural
Central
Conversion
Slide3A. Conductive loss
Conductive losses occur in either the outer or middle ear. Generally these types of disorders interfere with the conduction of sound vibrations to the inner ear.
Slide41. Microtia
This is the absence or malformation of the pinna. It can be either unilateral (one-sided) or bilateral (both sides).
Slide52. Auditory canal atresia
The auditory canal is either missing or extremely narrow.
Slide63. Swimmer’s ear
This is an infection of the auditory canal. Usually treated with antibiotic drops.
Slide74. Otitis media
AKA middle ear infection. Usually caused when the Eustachian tube doesn’t drain the middle ear well.
Slide8For chronic cases of otitis media surgery may be required. Tubes are placed through the tympanic membrane until the Eustachian tube can drain properly.
Slide95. Otosclerosis
Deposits fuse the stapes to the cochlea. Can be corrected with surgery. Bone-conduction hearing aids are sometimes used to bypass the ossicles.
Slide10B. Sensorineural hearing loss
The second category of hearing loss occurs in the inner ear and involves nerve damage. Sensorineural loss is permanent. Other symptoms may include tinnitus (ringing) or vertigo (dizziness).
Slide11Causes of sensorineural hearing loss
Genetics- passed down from a parentAuditory trauma (loud noise)- Ronald ReaganHead trauma- I. King JordanOtotoxic drugs- Heather WhitestoneHigh fever- Laurent Clerc and Helen KellerViral diseases- Marlee Matlin
Slide12Other causes of sensorineural loss
Rubella-virus that attacks the fetus in the womb.Tumors-benign (non cancerous) or malignant (cancer)Usher’s syndrome- genetic condition where child is born deaf and becomes blindMeniere’s disease (hearing loss with vertigo)- Coach Nave.
Slide13More
Sensorineural
causes
Presbycusis- loss from due to age Anoxia- “blue baby” lack of oxygenWaardenburg syndrome- pigmentation issuesAuto-immune-Rush Limbaugh
Slide14C. Central loss
This type of hearing loss occurs when the brain doesn’t interpret sound correctly. May involve auditory hallucinations or problems with word recognition.
Slide15D. Conversion disorder
This type of loss is a psychological problem. The patient’s hearing ability is not physically impaired but the patient believes he is deaf.
Slide16