lecture 5: ANSD Flashcards
(15 cards)
which test can give a definitive ANSD dx?
ABR
how do kids with ANSD perform on OAEs? what does this mean?
- they have OAEs!
- means OHCs are working but IHCs are not communicating with 8th nerve
which part of the auditory system is responsible for
a) loudness
b) frequency
c) timing
which part does ANSD struggle with?
a) middle ear bones
b) cochlea
c) neural network (ANSD struggles here!)
does ABR give severity info of ANSD
no – only CAEP do, but they are not conducted often
why shouldn’t you put a hearing aid on a kid with ANSD?
it will amplify the static overlay
will a CI provide auditory access if the point of lesion is at the 8th nerve, brain, or brainstem?
no
will a CI provide auditory access if the point of lesion is between the IHCs and 8th nerve?
yes – will stimulate nerve directly!
what is affected by ANSD? (4)
- temporal resolution
- frequency discrimination
- info about VOT
- pitch discrimination
- interaural timing cues, esp for low Hz
what kind of audiogram is common for kids with ANSD? (2)
- reverse slope
- better than behaviour
6 steps to handling ANSD?
- review med history
- listen to parents
- collaborate
- develop long-term plan
- attain 6 goals of LSL (slide 33)
- assess
risk factors for ANSD? (6)
- neonatal insult (ie jaundice, ventilation)
- prematurity
- drug exposure
- infections
- genetic abnormalities (ie otoferlin)
- temperature sensitive ANSD
red flags for ANSD?
- limited vocab for age
- poor eye contact
- avoiding interactions
- echolalia
- oversensitivity to sounds
- parents swear child hears w/o tech
how many presentations of ANSD are there?
6 (chart provided)
should a child with ANSD who is not fitted with hearing tech have ALE or AVT?
ale
tips for managing ANSD?
- periodic comprehensive aud ax
- seek experienced professionals
- SL ax every 3-6 months
- referrals: genetic, motor speech, neurologic, developmental
