Hearing Impairment Flashcards
Hearing loss is the ___ most common chronic dz among older adults
4th
Some age-related changes with hearing
External ear canal walls become thin Cerumen becomes drier Eardrum thickens Hair cells lost Stria Vascularis - capillaries thicken, decreased endolymph production, Na K ATPase activity decreases
hearing loss pathology can be caused by damage to the ____
external ear canal auditory nerve middle ear inner ear central auditory pathways a combo
cerumen impaction, foreign body
external ear pathology
otosclerosis, cholesteatoma, typmpanic membrane perforation, middle ear effusion
middle ear pathology
Most common cause of sensorineural loss
cochlear dz
sensorineural hearing loss that is symmetrical, amplification often helps
presbycusis
Loss of sensory hair cells, slow progressive loss, beginning w/ higher frequencies
Sensory presbycusis
Results from atrophy of the stria vascularis
Strial presbycusis
Cochlear neuronal loss of 50% or more
Neural presbycusis
Changes in cochlear mechanics produced by mass or stiffness changes or spiral ligament atrophy
cochlear conductive presbycusis
Hearing loss can be interpreted as ____
cognitive impairment
___ can be an early sign of hearing loss
Tinnitus
Examine ear canals to exculde
cerumen impation or effusion.
When to consult otolaryngologist
Asymmetrical hearing loss (can indicate tumor)
Cerumen impaction that is not responsive
Hx of tympanic membrane surgery or perforation
when to refer to audiologist
to determine type of hearing loss.
Paget dz, otosclerosis tx
bisphosphonate
Sudden hearing loss tx
corticosteroids or immunosuppressants
when is surgery indicated for hearing loss
otosclerosis, tympano sclerosis
Who won’t benefit from hearing aids
Those w/ poor speech discrimination, those unable to tolerate hearing aid in ear
Completely in the canal hearing aids needed for this degree of hearing loss
mild to moderate
In the ear hearing aids advantage
Ease of handling, comfortable fit. More power than completely in canal or canal aids
canal hearing aids advantages
cosmetically appealing, telecoil available, can work w/ headphones
disadvantages of canal hearing aids
user’s dexterity may be a problem
small size may limit features