hearing loss Flashcards
what are the types of hearing loss
sensorineural ,conductive and mixed hearing loss
sensorineural hearing loss entails
this type of hearing loss occurs when the inner ear or the actual hearing nerve itself becomes damaged. typically occurs when some of the hair cells of the cochlea are damaged.
the most common type of hearing loss is
sensorineural hearing loss
sensorineural hearing loss can be treated easily via medical or surgical means. t/f
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Causes of sensorineural hearing loss include
aging, exposure to loud noise, injury, disease, certain drugs or an inherited condition.
A patient who has sudden sensorineural hearing loss should be advised to wait for about a month or two to see if it would resolve before seeing the doctor .T/F
F…A delay in treating the condition will most likely decrease the chances of improvement with medications
conductive hearing loss entails
occurs in the outer or middle ear whereby sounds are not able to carry all the way through to the inner ear
causes of conductive hearing loss include
sound may be blocked by earwax or by a foreign object located in the ear canal, the middle ear space may be impacted with fluid, infection or a bone abnormality ,otosclerosis, cholesteatoma, neoplasms of the middle ear or the ear drum may have been injured.
conductive hearing loss is most common in children who may have recurrent ear infections or who insert foreign objects into their ear canal. t/f
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Mixed hearing loss occurs when
the patient has a combination of both sensorineural and conductive hearing loss.
hearing loss is said to occur when
Any part of the ear or auditory system is not working in the usual way
the outer is made up of
the pinna, the ear canal, the tympanic membrane
the middle ear is made up of
the eardrum, the three ossicles
the inner ear is made up of
the cochlea, the semicircular canals, the nerves that go to the brain
auditory neuropathy spectrum disorder entails
hearing loss that occurs when sound enters the ear normally but as a result of damage to the inner ear or the auditory nerve, sound is not organised in a manner that can be interpreted by the brain.
a person with a mild hearing loss may hear
some speech sounds but soft sounds are hard to hear
a person with a moderate hearing loss may hear
almost no speech when another person is talking at a normal level
a person with a severe hearing loss may hear
no speech when a person is talking at a normal level but may hear only some loud sounds
a person with a profound hearing loss
will not hear any speech but only hear very loud sounds
hearing loss may be described as
unilateral or bilateral
symmetrical or asymmetrical
progressive or sudden
fluctuating or stable
congenital or acquired
hearing loss is diagnosed when
hearing test finds that a person is unable to hear 25 decibels in at least one ear.
categorize hearing loss
mild(25-40), moderate(41-55dB), moderate-severe(56-70dB), severe(71-90dB) Or profound(>90dB)
a progressive loss of ability to hear high frequencies with aging is known as
presbycusis
examples of syndromic deafness
N- Neurofibromatosis type 2
A- Alport’s syndrome
U- Usher syndrome
S -Stickler syndrome
E- Waardenburg syndrome
A
fetal alcohol spectrum disorders are reported to cause hearing loss in up to 64% of infants born to alcoholic mothers. T/F
T
Examples of ototoxic medications
loop diuretics like furosemide, NSAIDS, aminoglycosides, platinum based chemotherapeutics like cisplatin and carboplatin.
how long does it take the voice to be affected in sensorineural hearing loss
an average of 2-3 months
webers test interpretations
A patient with a unilateral conductive hearing loss would hear the tuning fork loudest in the affected ear. This is because the ear with the conductive hearing loss is only receiving input from the bone conduction and no air conduction, and the sound is perceived as louder in that ear. This finding is due to the conduction problem of the middle ear (incus, malleus, stapes, and external auditory meatus) which masks the ambient noise of the room, while the well-functioning inner ear (cochlea with its basilar membrane) picks the sound up via the bones of the skull, causing it to be perceived as a louder sound in the affected ear.Sensorineural hearing loss will cause the sound to be heard best in the normal ear.
a rinne’s positive test indicates
air conduction is better than bone conduction in that ear
in what conditions would rinne’s test be positive
normal hearing
sensorineural hearing loss such that air conduction is better than bone conduction
in what condition would rinne’s test be negative
conductive hearing loss
