Answers:
How great of a conductive hearing loss is required to "flip forks" (have BC>AC on Weber)?
A) 5
B) 15
C) 30
D) 60
E) 100
5 db is the required hearing difference between ears for Rinne to localize. The maximal hearing loss from CHL is 60db. Generally a hearing loss of 30db is required for BC>AC.
If a patient presents with hearing loss after exposure to a loud rock concert, how long will it take their hearing to recover?
MC Questions:
Which category of presbycusis is only theoretical?
A) Strial Presbycusis
B) Neural Presbycusis
D) Sensory Presbycusis
C) Conductive Presbycusis
A) 5
B) 15
C) 30
D) 60
E) 100
5 db is the required hearing difference between ears for Rinne to localize. The maximal hearing loss from CHL is 60db. Generally a hearing loss of 30db is required for BC>AC.
If a patient presents with hearing loss after exposure to a loud rock concert, how long will it take their hearing to recover?
If the noise exposure was sufficiently loud, or sufficiently long then their hearing loss may not recover. If it does, recovery generally occurs in the first 24-48 hours.
Which category of presbycusis is only theoretical?
A) Strial Presbycusis
B) Neural Presbycusis
D) Sensory Presbycusis
C) Conductive Presbycusis
Free Response Question:
What is the most common cause of sudden SNHL in the elderly?
Quick Facts:
Congenital Hearing Loss Nonsyndromic
-70% of HHI-characterized
by mode of inheritance.
-Autosomal recessive = DFNB = 80%
-Autosomal dominant = DFNA = 20%
-GJB2 = gap-junction beta 2 = encodes for connexin 26, most common cause of recessive deafness = 40% of sporadic prelingual hearing impairment.
What is the most common cause of sudden SNHL in the elderly?
Quick Facts:
Congenital Hearing Loss Nonsyndromic
-70% of HHI-characterized
by mode of inheritance.
-Autosomal recessive = DFNB = 80%
-Autosomal dominant = DFNA = 20%
-GJB2 = gap-junction beta 2 = encodes for connexin 26, most common cause of recessive deafness = 40% of sporadic prelingual hearing impairment.
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