otometrics AccuScreen ABR, Руководство пользователя

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Otometrics
41
Tests
The TEOAE test
PASS (Test passed)
REFER (Test referred)
A REFER (Test referred) result may occur for a number of reasons, the most impor-
tant one being that the patient may have a sensorineural hearing loss.
Always consider the factors below, however, when you interpret a REFER (Test
referred) result. It may be possible to improve the quality of the test and so, on repeat-
ing the test a PASS (Test passed) may be obtained. It is always recommended that you
repeat the test when a REFER (Test referred) result is obtained.
Consider for instance the following when you interpret a REFER (Test referred)
result:
• Malfunctions in the transmission of sound are by far the most important causes
of emissions not being detected. To eliminate this possibility, always make sure
If the result is a PASS (Test passed) , just the graph
is shown.
• A PASS (Test passed) result indicates that the
patient has normal outer hair cell function at
the time of testing.
• A PASS (Test passed) is determined by a statis-
tical algorithm, based on weighted averaging,
which ensures detection with proven high
specificity and sensitivity. No further inter-
pretation of a
PASS result is needed.
If the result is a REFER (Test referred) , the
detailed results are shown immediately below the
graph.
REFER (Test referred) :
• A REFER (Test referred) is “good” when the
Artifact
and
Stimulus
levels do not exceed
the critical limits (see below), indicating that
test conditions were good.
• A REFER (Test referred) is “bad” when the
Artifact
and
Stimulus
levels have been
exceeded, indicating that test conditions were
not optimal. In this case the patient should
be retested.