Pure Tone & Speech Audiometry

Question 1

AC can specify ______ of loss, while BC can specify _________.

Answer 1

Degree

Type

Question 2

Scale of Impairment in dB HL:
Normal 
Slight
Mild
Moderate
Moderately Severe
Severe
Profound

Answer 2

Normal =  -10 - 15
Slight = 15 - 25
Mild = 25 - 40
Moderate = 40 - 55
Moderately Severe = 55 - 70
Severe = 70 - 90
Profound = 90 - 120

Question 3

Speech audiometry takes measures of ___________ and ___________

Answer 3

Sensitivity

Acuity

Question 4

Speech Detection Threshold (SRT)

Answer 4

Measure of sensitivity
Lowest level DB which speech can be understood
Uses spondees “greyhound, hotdog”
Correlates w/ Pure Tone Thresholds @ 500, 1000, 2000 Hz!

Question 5

Most Comfortable Listening Level (MCL)

Answer 5

Cold running speech
Adjust audiometer until PT is comfortable
For fitting hearing aids

Question 6

Purposes of measures of Acuity

Answer 6

Dependant variable = % correct

Find “suprathreshold” speech recognition ability

Question 7

Word Recognition Scores (WRT)

Answer 7

Speech discrimination task: ID a word that was just spoken (% correct)
CANNOT be predicted from a pure tone audiogram
Use phonetically balanced word lists
If conduction, should get 100% (if loud enough) b/c cochlea intact