Otoacoustic Emissions Flashcards
1
Q
Otoacoustic emissions come from the:
A
OHC
2
Q
What are the two types of emissions?
A
Spontaneous
Evoked
3
Q
What is the averaging method?
A
Presentations given
Responses summed
Noise floor lowered
4
Q
If an emission is present, patient has hearing thresholds of _ or better
A
30dB HL
5
Q
If an emission is absent, patient has hearing thresholds poorer than:
A
30dB HL
6
Q
What are two types of evoked emissions?
A
Transient
Distortion product
7
Q
What are the equations/rules for the two tones for DP?
A
2*F1 - F2
F2/F1 = 1.2
8
Q
What is OAE used for?
A
Differentiate cochlear and retrocochlear loss
Newborn screening
Pediatric Audiometry
Suspected Malingerer
