Answers:
Moderate hearing loss is diagnosed at what hearing threshold?
A) 10-30 db
B) 20-40db
C) 30-50db
D) 40-60db
A) 10-30 db
B) 20-40db
C) 30-50db
D) 40-60db
Normal hearing <20, mild hearing loss 20-40, moderate hearing loss 40-60, severe hearing loss 60-80, profound hearing loss >80.
What is the classic appearance of conductive hearing loss on an audiogram
An air-bone gap is the classic sign of a CHL on an audiogram.
MC Questions:
This tympanogram is type...?
A) Type A
B) Type As
C) Type Ad
D) Type B
E) Type C
Free Response Question:
How can you differentiate a type B tympanogram due to middle ear effusion from a type B tympanogram due to perforation?
Quick Facts:
Use the mnemonic E COLI for ABR waveforms:
-Wave I = Eighth nerve action potential
-Wave II = Cochlear nucleus
-Wave III=Olivary complex (superior)
-Wave IV = Lateral lemniscus
-Wave V = Inferior colliculus
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