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What structure separates the middle and external ear
Tympanic membrane
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What are the 3 auditory bones of the middle ear
incus, stapes, and malleus
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Conductive hearing loss signifies a mechanical dysfunction in which structures?
What could cause conductive hearing loss?
- middle or external ear
- a build up of cerumen, foreign bodies, a perforated tympanic membrane, pus or serum in the middle ear, and otosclerosis (a decrease in mobility of the ossicles)
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What age group is most prone to ear infections and why?
Children because they have shorter and wider eustacian tubes
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A cone shape reflection is usually seen where on the tympanic membrane?
- 5 o clock in the right ear
- and 7 o clock in the left
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What color should the tympanic membrane be?
pearly gray, shiney
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presbycusis
a type of hearing loss that occurs with aging, even in people living in a quiet environment
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If the tympanic membrane is red and bulging, what would this indicate
- acute otitis media
- bulging because of pressure in ear
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What is the auditory nerve
Cranial Nerve VIII
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Transmission of sound waves in the inner ear is known as what?
Sensorineural hearing or perceptive hearing
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What is the Weber's Test
- Strike the tuning fork on the back of the hand and place it in the middle of the person's head. Ask if the sound is heard equally in both ears
- •Conductive hearing loss- lateralization of sound to the affected ear.
- •Sensorineural hearing loss- lateralization of sound to unaffected ear.
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What is the Rinne Test
- Strike tuning fork and place on the mastoid process
- Normal result is if Air conduction is heard 2x as long as bone conduction
- Conductive hearing loss: if bone sound is heard longer than air
- Sensorineural: if both bone and air are reduced overall
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Tinnitus
ringing, crackling or buzzing in the ears
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True vertigo results from dysfunction in the
labyrinth
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When inspecting with the otoscope, the nurse should...
- pull the pinna up and back
- hold the otoscope upside down
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