Madsen zodiac, Справочное руководство

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6. Click the Start/Stop button to start recording.
7. If needed, press the
± P
pressure offset button and simultaneously use the
dial to adjust the pressure.
Warning
•
If the patient is troubled by the test, stop the test. The test
is interrupted immediately. Already measured results are kept.
8. If needed, press the Pause softbutton to pause the test. This can be useful
for instance when recording acoustic reflexes using external stimuli (for
example electric stimulus during cochlear implant surgery).
9. The measurement stops automatically after 30 seconds, but you can stop it
manually before.
10. You can record one measurement per ear.
9.9.1 The Admittance (Y) Recorder screen
A. Admittance Recorder graph
Admittance Recorder graph
• Time line in seconds
• The recorded admittance graph shown in the left graph area
• The live baseline graph shown in the right graph area
9.10 ETF-P
ETF-P can be performed on ears with eardrum perforations prior to reconstructive surgery to evaluate whether the middle
ear could be ventilated through the Eustachian tube following tympanoplasty. Air must be able to pass through the Eus-
tachian tube in order to equalize the middle ear pressure following reconstructive surgery.
For testing the Eustachian tube function in ears with perforated eardrums (ETF-P), a method different from immittance
measurements is used. In ETF-P, the ear air pressure is monitored continuously to detect any airflow through the Eus-
tachian tube.
70 Otometrics - MADSEN Zodiac
9 Testing with Zodiac Diagnostic or Clinical - Stand-Alone