ENT Chapter 2 Flashcards
1
Q
How common is childhood deafness
A
1 in 500 newborns has bilateral sensorineural hearing loss 50% is genetic, 25% non-genetic, 25% neuropathic
2
Q
Name perinatal causes
A
Prematurity, hypoxia, IVH, kernicterus, infection
3
Q
What is tested during the newborn hearing screening?
A
Otoacoustic emissions
Audiological brainstem responses
4
Q
Who are cochlear implants for?
A
People with sensorineural hearing loss
5
Q
What type of deafness is caused by drum perforation?
A
Conductive
6
Q
What type of deafness is caused by ototoxic drugs?
A
sensorineural
7
Q
What type of deafness is caused postinfectively?
A
sensorineural
8
Q
What is age-related hearing loss also caused?
A
Presbyacusis - loss of high-frequency first ->progressive
