Maico MI 24, Operating Instructions Manual

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Operating Instructions MI 24, MI 24h
18
4.5 How to evaluate the tympanogram display
After having completed a
measurement you can see the
results on the LCD.
On the left side of the display
you see a graph of the
tympanogram.
The area
surrounded by the box is valid
for “normal” tympanograms.
You can change the area or turn
it off.
For details see chapter 10
“Individual Setup of the MI 24.”
In the top-middle of the LCD,
the words
Right or Left indicate
the ear chosen at the moment.
Tympanometer (at the top right) - indicates that the reflex measurement has been
switched off.
In the boxes to the right the following test measurements are displayed:
Ear Volume
- indicates the volume of the section of the auditory canal between the
ear tip and the eardrum in ml (in the example 0.94 ml).
Compliance - indicates the maximum value of the compliance from the
tympanogram in ml (in the example 0.81 ml).
Pressure - indicates the pressure with the highest measured compliance (in the
example -37 daPa).
Gradient - calculations are reported as the tympanogram width at half of peak
compliance expressed in daPa (in the example 32 daPa).
Status
READY
Ear Volume
Compliance
Pressure
Gradient
Impedance Tympanometer Right
ml
3
2
1
0
-600 -300 300 daPa
Scale
0.94 ml
0.81 ml
- 37 daPa
32 daPa
Figure 14
Display of a normal tympanogram