10/23/2013

10/23/2013

Answers:

An individual who has difficulty with soft or distant sound but understands most speech without cues and appreciates environmental sounds would likely have what type of hearing loss.
A) Mild (25-50db)
B) Moderate (50-70db)
C) Severe ( 70-90db)
E) Profound (90+)

Mild (25-50db) = difficulty w/ soft soft/distant sound
Moderate (50-70db) = diff w/ normal conversation level, need visual cues
Severe ( 70-90db) = misses all speech, can hear environmental sound
Profound (90+) = hears only airplanes/jackhammers etc.

What is the Stenger test? What is it used for?

Stenger test = when both ears are stimulated at the same time by an equal frequency and phase, the better hearing ear should perceive the sound. This can be used to detect pseudohypoacusis (fake/exaggerated hearing loss)

MC Questions:
If the following tympanogram was accompanied by an elevated EAC volume what would the likely diagnosis be?

A) Otosclerosis
B) Ossicular discontinuity
C) Middle ear effusion
D) TM perforation
E) Eustachian tube dysfunction

Free Response Question:
If acoustic reflex testing is performed and the pt only has an ipsilateral reflex of the left ear, what would be the most likely explanation for these findings?

Quick Facts:

Auditory Brainstem Response
-Objectively assess CNVIII to midbrain.
-Electrodes are placed on pt head and sounds are presented.
-30-60min
-5-7 waves occur within 10-15 ms.
-Waves I/II = in CNVIII
-Waves III-V = brainstem/midbrain
-Latencies and amplitudes of I, III and V are analyzed
-Can also use for auditory threshold.
-lowest intensity at which wave V is seen is considered threshold.
-often used in newborns
-CHAMP = cochlear hydrops analysis masking procedure = used for detecting Meniere disease.