Test details
Progress
Shows the time elapsed for the current test frequency. If a
Pass/Clear Response
for the current frequency is not achieved the test frequency will time out. Max.
time depends on environmental noise conditions. If test conditions are optimal but
there is no response measured, then the frequency will time out before the pro-
gress bar reaches the end.
The actual test is like a race between Progress and ABR:
•
If
Progress
wins, the result is a
Refer/No Clear Response
.
•
If
ABR
wins, the result is a
Pass/Clear Response
.
Pause
Press to pause the test.
Test duration for babies
Single ear testing:
Approximately 1½ minutes on babies with normal hearing under quiet conditions, but highly dependent on test conditions
in general.
Binaural testing:
Approximately 3 minutes on babies with normal hearing under quiet conditions, but highly dependent on test conditions
in general.
5.5.4
ABR test results
When the test is completed, the test data is saved and the result is shown on the screen.
1. See
Options in the test result screens
for a description of the buttons available.
2. Press the
OK
button to return to the
Test Menu
.
Test result Pass/Clear Response
If the result is a
Pass/Clear Response
, only the graph is shown.
•
A
Pass/Clear Response
indicates that an auditory brainstem response to a 30, 35,
40 or 45 dB nHL broadband stimulus was detected.
This method mainly tests the frequencies from 2 to 4 kHz, which carry the most
important acoustic information for speech development.
•
A
Pass/Clear Response
result ensures that a significant hearing loss in these fre-
quencies can be ruled out with 99.5% confidence.
Otometrics - MADSEN AccuScreen
53
5 Testing with AccuScreen
