Middle Ear Flashcards
(29 cards)
________ are when the three ossicles somehow get dislocated and then the chain becomes separated which means that the energy can’t get passed from the TM to the oval window
Ossicular chain injuries
______ is when the ossicular chain gets calcified which causes a difference in weight, Also causes CHL
Otosclerosis
_______ is represented on an audiogram as a carhart notch
otosclerosis
a notch at 2000 Hz is _____________
otosclerosis
_______ is an infection of the middle ear
otitis media
_________ is a tumor in the middle ear
cholesteatoma
____________ is when a violent closed head injury (especially if associated with a temporal bone fracture) causes the ossicles in the middle ear to become seperated
ossicular chain dysfunction
Ossicular chain dysfunction causes what type of hearing loss?
Moderate conductive hearing loss
The 3 bones based on the impedance mismatch give a 30dB gain so when there is disruptance in the bones the job isn’t getting completed so you end up with a conductive hearing loss of _________dB
30
_______ fixation of the stapes (extra deposit at the stapes)
otosclerosis
otosclerosis causes a _______ HL
conductive
Beginning stage of ________ on an audiogram is an air born gap in the LF
otosclerosis
Otosclerosis causes a ___________
slight HL emerging in LF
Advanced stage of otosclerosis causes what?
CHL across all frequencies
________ is known as an infection of the middle ear
otitis media
________ (AOM) rapid onset lasts 10 days. Symptoms include redness of TM pain and sometimes starts with a respiratory infection
acute otitis media
_________ (COM) is a long and slow onset that takes 3 or more months for recovery.
chronic otitis media
_________ in between acute and chronic
subacute
__________ 3 or more times in 6 months or 4 or more times in 12 months
recurrent otitis media
_________ starts from either a cold, allergies, smoke or anything else that can cause an obstruction of the eustachian tube.
otitis media
Otitis media can either create a 5-10 db hearing loss or if serious a ______ mild to moderate HL
40-50 dB
_______ infection of the middle ear. Fluid in the middle ear space or discharge
acute otitis media
__________ is fluid in the middle ear space
effusion
__________ is discharge
otorrhea