Hearing loss Flashcards
What type of hearing loss of osteosclerosis?
conductive hearing loss
What is osteosclerosis?
gradual onset hearing loss due to fixation of the stapes footplate - abnormal bone found here
What populations are most affected by osteosclerosis?
teens/20s
women>men
progresses rapidly in pregnancy
What is the corrective treatment of osteosclerosis?
stapedectomy
What is a managment treatment of osteosclerosis?
hearing aid
What is Presbycusis?
old age hearing loss
What type of hearing loss of presbycusis?
sensorineural hearing loss
What sounds go first in presbycusis?
high frequency sounds - dips at 4kiloHz on audiography
What people are most affected by presbycusis?
those that work in noisy environments
What drugs induce sensorineural hearing loss?
gentamycin and other aminoglycisides
chemo drugs - cisplatin and vincristine
aspirin and NSAIDs - reversible
How do vestibular schwannomas present?
hearing loss
tinnitus
imbalance
How are vestibular schwannomas investigated?
MRI
Where do vestibular schwannomas arise?
internal acoustic meatus
What percentage of vestibular schwannomas grow?
50%
What type of hearing loss can skull fractures lead to?
conductive hearing loss
