Answers:
SNHL along with thyroid abnormalities most likely signifies what syndromic form of hearing loss?
A) Jervell Syndrome
B) Alport Syndrome
C) Waardenburg Syndrome
D) Usher Syndrome
E) Pendred Syndrome
-Usher Syndrome = retinitis pigmentosa
-Waardenburg = pigmentary abnormality
-Pendred = thyroid organification defect
-Alport Syndrome = renal disease
-Jervell/Lange-Nielsen syndrome = prolonged QT interval
What is the maximum average dB exposure allowed for workers over an 8 hour period that does not require ear protection?
<85db (roughly as loud as a vacuum cleaner)
MC Questions:
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
A) Jervell Syndrome
B) Alport Syndrome
C) Waardenburg Syndrome
D) Usher Syndrome
E) Pendred Syndrome
-Usher Syndrome = retinitis pigmentosa
-Waardenburg = pigmentary abnormality
-Pendred = thyroid organification defect
-Alport Syndrome = renal disease
-Jervell/Lange-Nielsen syndrome = prolonged QT interval
What is the maximum average dB exposure allowed for workers over an 8 hour period that does not require ear protection?
<85db (roughly as loud as a vacuum cleaner)
MC Questions:
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
Free Response Question:
If a patient presents with hearing loss after exposure to a loud rock concert, how long will it take their hearing to recover?
Quick Facts:
4 types of Presbycusis
-Sensory Presbycusis = b/l, symmetric high tone hearing loss w/ abruptly sloping
threshold pattern starting in middle age. Loss of both hair cells and
supporting sustentacular cells. Flattening of organ of Corti and secondary
neuronal degeneration. Path changes similar to noise trauma
-Neural Presbycusis = loss of cochlear neurons, significant loss of speech
discrimination. Downward sloping audiogram w/ variable slope.
-Strial Presbycusis = flat pure-tone audiogram w/ excellent speech
discrimination. Patchy atrophy of stria vascularis in middle/apical turn of
cochlea without loss of cochlear neurons. Quality of endolymph is likely
affected by striatal degeneration causing loss of energy to end
organ.
-Conductive Presbycusis = changes in mechanical characteristics of basilar
membrane may cause gradually sloping high frequency hearing loss. No
discernable pathology. Only theoretical.
If a patient presents with hearing loss after exposure to a loud rock concert, how long will it take their hearing to recover?
Quick Facts:
4 types of Presbycusis
-Sensory Presbycusis = b/l, symmetric high tone hearing loss w/ abruptly sloping
threshold pattern starting in middle age. Loss of both hair cells and
supporting sustentacular cells. Flattening of organ of Corti and secondary
neuronal degeneration. Path changes similar to noise trauma
-Neural Presbycusis = loss of cochlear neurons, significant loss of speech
discrimination. Downward sloping audiogram w/ variable slope.
-Strial Presbycusis = flat pure-tone audiogram w/ excellent speech
discrimination. Patchy atrophy of stria vascularis in middle/apical turn of
cochlea without loss of cochlear neurons. Quality of endolymph is likely
affected by striatal degeneration causing loss of energy to end
organ.
-Conductive Presbycusis = changes in mechanical characteristics of basilar
membrane may cause gradually sloping high frequency hearing loss. No
discernable pathology. Only theoretical.
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