Otology Flashcards
How many hours of 85 dB noise can someone experience at the workplace?
16
How many hours of 90 dB noise can someone experience at workplace?
8
How many hours of 92 dB noise can someone experience at workplace?
6
How many hours of 95 dB noise can someone experience at workplace?
4
How many hours of 100 dB noise can someone experience at workplace?
2
How many hours of 105 dB noise can someone experience at workplace?
1
How many hours of 110 dB noise can someone experience at workplace?
.5
How many hours of 115 dB noise can someone experience at workplace?
.25
At what age can u get an ABI
12
What chromosome is the NF1 gene located on
17
What chromosome is NF2 located on
22
What portion of bony labyrinth is taken up by membranous labyrinth?
25%
Carboplatinum is toxic to which structure in ear
Inner hair cells
Cisplatin is toxic where?
Stria vascularis Spiral ganglion cells Outer hair cells
What is Alexander aplasia
Cochlear duct differentiation at the level of the nasal coil is limited leading to effects on organ of Corti and ganglion cells
Mondini aplasia
Only basal coil of cochlea can be identified
What is scheibe aplasia
Malformation of membranous labyrinth in cochlea and saccule
Michel aplasia
Complete age new is of petrified portion of temporal bone
Which ear is more commonly affected in microtia
Right
What structure receives the crura of the semicircular canals
Utricle
What is the jahrsdoerfer scoring system
Scoring of how good a candidate is for aural atresia repair. 6-8 poor candidate, 8-10 moderate, 10 and up great candidate
What is the most common complication of Cholesteatoma
Labyrinthine fistula
Which nerve supplies sensory innervation to the conchal bowl?
Nervus intermedius, branch of facial
What percent of cochlear afferents originate from outer hair cells
5-10%



