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On-screen selections
Curve selection
Set frequency, ipsi and contra
Set threshold
9.7
Reflex Decay testing
This test is supported by MADSEN Zodiac Diagnostic and MADSEN Zodiac Clinical.
You can record a reflex decay measurement either as a separate measurement or as part of a diagnostic sequence. In
Sequence testing, the test automatically suggests the stimulus level, which is the reflex threshold level +10 dB.
In the following you will find the description for performing reflex decay testing as a single test. This means that the
sequence function is not enabled.
Warning
•
ded period of time. Make sure that there are no contraindications for performing the test.
Note
When you select a special test, the Special button will remain lit until you deselect the special test, e.g. by
•
pressing the Tymp button, or by pressing the Special button a second time.
Note
It is recommended that you perform a tympanometric test before making any acoustic reflex meas-
•
urement, and determine the acoustic reflex threshold before making a reflex decay measurement.
Note
If Reflex Decay is performed as part of a sequence, the following applies: The decay test stimulus level
•
pre-supposes that there is a reflex threshold available for the ear, stimulus type and stimulus ear (ipsi- or con-
tralateral) that is chosen for reflex decay testing. The decay test stimulus level will then automatically be set to
the threshold level +10 dB. If the reflex has not been determined, the decay measurement will be skipped.
Note
There may be a warning that the stimulus level is in the extended intensity range. Reflex decay may not
•
be possible due to highly elevated threshold levels.
Note
To avoid automatic testing being interrupted because of high stimulus intensity levels when reaching the
•
warning limits, it is recommended that you set the max. intensity to 100 dB HL.
Otometrics - MADSEN Zodiac
Use the soft-buttons
tion curve.
Use the settings buttons to select and navigate in order to view curve results.
Use the soft-buttons
tion curve you wish to select as threshold. Press
The Reflex Decay test is a supra-threshold test, where the stimulus levels are very high for an exten-
9 Testing with Zodiac Diagnostic or Clinical - Stand-Alone
Previous Curve
Next Curve
or
Previous Curve
Next Curve
or
to highlight a desired deflec-
to highlight a desired deflec-
Set Threshold
to select.
63
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