Madsen AccuScreen OAE & ABR Screener User Manual
38
Test details
Noise
Current noise level. Make sure the
Noise
level is as low as possible. A high
Noise
level may indicate a high level of environmental noise or a noisy patient.
Artifact
Shows the average artifact level in percent. The artifact rate (emanating from
noise) should be below 20%, if possible.
If artifacts are present, this may indicate a high level of environmental noise or a
noisy patient. In these cases, check the test conditions and make sure that the
probe fits.
Stability
Shows the average probe stability level in percent. The stimulus
stability (emanating from probe stability) should be above 80%, if possible.
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
progress bar reaches the end.
Test duration for babies
Less than 10 seconds on babies with normal hearing under quiet conditions, but highly dependent on test conditions in
general.
5.2.3
TEOAE test results
When the test is completed, the test data is saved and the result is shown on the screen.
Press
OK ( )
to return to the
Test Menu
.
Pass/Clear Response
If the result is a
Pass/Clear Response
, just the graph is shown.
•
A
Pass/Clear Response
result indicates that the patient has normal outer hair cell
function in the area corresponding to the test signal.
•
A
Pass/Clear Response
is determined by a statistical algorithm, based on
weighted averaging, which ensures detection with proven high specificity
and sens itivity. No further interpretation of a
Pass/Clear Response
result is
needed.