Types of HL

Question 1

Sensorineural hearing loss as birth defect

Answer 1

3 children per 1000

additional 6 per 1000 by school age

Question 2

Prelingual hearing loss

Answer 2

birth-3 yrs

critical speech/lang development

Question 3

Risk factors for prelingual hearing loss

Answer 3

family history
low birth weight
low APGAR
in-utero infection
ototoxic meds
ventilator use for more than 5 days
craniofacial abnormalities
syndromes
meningitis
hyperbilirubinemia (jaundice)

Question 4

Auditory Neuropathy

Answer 4

affects peripheral auditory system
mild to moderate loss
present otoacoustic emissions (OAE)
abnormal or absent auditory brainstem response (ABR)
poor speech recognition skills

Question 5

CAPD

Answer 5

Central Auditory Processing Disorder
central cause-brainstem or above
not peripheral loss
transmission of signal from brainstem to cerebellum
may or may not know cause
difficult to diagnose

Question 6

Presbycusis

Answer 6

age related HL
progressive
bilateral
symmetrical
sensorineural
loss at high frequencies