9 Testing with Zodiac Diagnostic or Clinical - Stand-Alone
Procedure
All three result rows in the Tympanometry results table
will be used for this test.
1. Select the
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 dif-
ferent techniques and maneuvers in a sequence of test-
ing to fully evaluate the functioning of the Eustachian
tube.
Note
You can also use Manual Tympanometry for ETF-I. In Manual Tympanometry you can facilitate the equal-
•
ization maneuvers by keeping the pressure between measurements.
9.5
Acoustic reflex testing
MADSEN Zodiac determines acoustic reflexes automatically using different stimulus levels.
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 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.
High intensity 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. You can always supplement auto-
matic reflex measurements with manual testing, if needed.
58
Tympanometry
test screen.
Otometrics - MADSEN Zodiac