12 Testing with Zodiac Diagnostic or Clinical - PC-based
88
MADSEN Zodiac
Note
•
You can also use Manual Tympanometry for ETF-I. In Manual Tympanometry you can facilitate the
equalization maneuvers by keeping the pressure between measurements.
Note
•
It is recommended that you perform a tympanometric test before making any acoustic reflex measurement
and determine the acoustic reflex threshold before making a reflex decay measurement.
Note
•
If you have performed a tympanometric test, where the tympanogram is very steep (TW is less than 40 daPa), a
TPP offset is automatically applied to stabilize the reflex measurement.
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. You can always supplement automatic
reflex measurements with manual testing, if needed.
Procedure
Three result rows in the Tympanometry results table will
be used for this test.
If you wish to print them, make sure that all three are
selected in the Tympanometry results table.
1.
Select the
Tymp. and Reflex Scr.
test screen.
2.
Record a tympanogram.
3.
Instruct the patient to perform a pressure equalization
maneuver.
4.
Record a second tympanogram.
5.
Compare the tympanograms from step 1 and 3 in the
multilayered tympanogram.
6.
It may be useful to repeat the procedure using
different techniques and maneuvers in a sequence of
testing to fully evaluate the functioning of the
Eustachian tube.
12.5
Acoustic reflex testing
Madsen Zodiac determines acoustic reflexes automatically using different stimulus levels.
High intensity levels
