Operating Instructions MI 34 / MI 34 H
GEBAmi34e.11a.docx
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Figure 27
The ETF screen
Right
ETF Intact
Status
READY
ml
3
2
1
0
-600
-300
300 daPa
Ear Volume
Impedance
Pressure 1
Pressure 2
Pressure 3
Figure 28
The ETF screen after first test cycle (Pressure 1)
Right
ETF Intact
Status
READY
ml
3
2
1
0
-600
-300
300 daPa
Ear Volume
Impedance
Pressure 1
Pressure 2
Pressure 3
- 12 daPa
Make patient decrease middle ear pressure by
Swallowing
Release the ENTER key to continue
8 Eustachian Tube Test Operation
The diagnostic probe must be used for this test. If you have an additional
impedance screening probe (option), do not use it for this test!
If you have not already done so today, press the MENU-button, highlight
CALIBRATION and calibrate the diagnostic probe (as described in chapter
3.5).
The Eustachian tube test can be used in patients with intact TM or in
patients who have a perforated TM (Tympanic Membrane) or PE (Power
Equalization) tubes in place.
8.1 ETF test for patients with intact TM
Highlight ETF Intact from the
main menu and press the
ENTER button
Ï
or press the
ETF
-key
Ò
to advance to the
Eustachian Function Test
screen (see figure 27). It is not
necessary to run a
tympanogram before running
this test.
The text ETF Intact occurs at
the upper right corner of the
LCD display
Ç
.
Connect the probe as
described in chapter 7 “Reflex
decay test”. Place an
appropriately sized eartip
firmly on the probe tip. Insert
the tip into the ear canal, well
enough to make a seal and
provide support for the probe
tip.
Instruct the patient not to
move or talk until the test is
over, as any sound or
