Otodynamics Otoport Advance, User Manual

Page: 118 / 296

CHAPTER ELEVEN
ABR test
118
11.4.7
ABR test results
The following table lists all possible test results and associated graphics.
The table gives an explanation of the circumstances under which each
result would be shown.
Test Result Description
ABR Pass The data collected has met the criteria set. The
optimum test setting will depend on your
application, e.g. screening or clinical
measurement (see chapter
17
Test setup ).
Note: The following results will occur if a Pass is not obtained.
No Valid ABR The data collected has not met the set pass criteria
and the test conditions were acceptable.
Noisy The noisy data collected is three times greater
than the low noise data collected.
Poor Probe Fit The last stimulus level recorded changed from
that recorded at the start of the test by >3dB, or the
last acoustic noise level recorded was high.
Stopped Too Soon The test has been ended manually before the
minimum amount of data had been collected.
Atypical Waveform The template correlation (TC) is low but Fsp is high
(only obtained in PC2 and PC3). An ABR has been
detected but it did not match the neonate template.
This might occur if an adult were tested or if
electrodes were incorrectly connected.
ABR test