otometrics Madsen ZODIAC 901, Руководство пользователя

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Version 4.x Only!
Tympanometry and
ETF-I
From Version 4.x of the ZODIAC 901 (including the Limited Version), a
Middle-Ear Pressure (MEP) marker has been implemented in Tymp
Auto Sweep and ETF-I testing. Softkeys 4 and 5 no longer are used for
moving the pump, but for moving the marker instead. When moving the
MEP marker, the current values for MEP, SC, Gradient and TW are dis-
played in real time on the left of the screen. An asterisk appears to the
right of the MEP value to indicate that the marker has been moved.
Auto Tymp Sweep The MEP marker appears automatically, and is located at the peak of the
sweep, i.e. at 0 daP. In cases where it is difficult to carry out a normal
sweep and obtain compliance data, e.g. with difficult or unsettled pa-
tients, you can manually move the marker in either direction by means
of
Softkeys 4 and 5 , and read out the computed values on the left of the
display. Note that an asterisk appears to the right of the MEP value if the
marker has been moved.
ETF-I
MEP Marker
In the Eustachian Tube Function test for intact eardrum, a second sweep
is made without erasing the data from the first. The values of Ear Canal
Volume (ECV) and Middle Ear Pressure (MEP) from both tests are re-
corded, and after the second test the difference between the latter, MEPd
(= MEP2 minus MEP1), is also computed and displayed. The MEP
marker implemented in Version 4.x, enables the marker for the second
sweep to be moved in either direction displaying computed values for
MEP2 and MEPd. Softkeys 4 and 5 are used for moving the marker to
the left or right.
Reflex and reflex threshold testing:
Softkey 2
The marker is accessed by pressing the Alt. Select button from any re-
flex test mode, and then Softkey 2 to activate the Marker Mode.
Softkey 2 Pressing Softkey 2 then toggles between Track, Marker 1 and Marker 2,
where Track means that both markers move simultaneously. The screen
in Fig. 5.1 shows Marker 1 and Marker 2 set.
The markers are moved by turning the rotary knob.
When the Marker Mode is selected, the following data is displayed be-
tween the graphics and the sub-menu lines:
Operation Manual 55
GN Otometrics SUPPLEMENTARY FUNCTIONS Chap. 5
ZODIAC 901 Middle-Ear Analyzer
ALT. SELECT
5.1
Fig.5.1
Reflex Screening with Marker