Interacoustics Sera User manual

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Quick Guide
SeraTM Automated ABR
PREPARE THE EQUIPMENT
1. Turn on SeraTM by pressing the home/power button
2. Select a new or existing patient on the device or use the Quick Test option.
3. Select the ABR test protocol from the list.
4. Select the ear for testing
5. Pressing the Test button starts the test.
TEST ENVIRONMENT
The ideal test environment is a quiet room where lights and other electronic equipment are turned off.
PREPARE THE BABY
Patient state
The baby should be sleeping or in a quiet and relaxed state.
Sucking, blinking, crying or movement may affect testing.
Skin preparation
If the baby’s skin is oily or covered in vernix, the electrode placement sites
should be cleaned prior to placing the electrodes.
Use a conductive gel with the electrodes to improve impedances.
Place electrodes
Place surface electrodes using the specified test montage for the selected
protocol (mastoid or nape).
Connect cables
Connect the cables from the preamplifier to the respective surface electrodes.
PLACE TRANSDUCER
Place the probe or insert earphones in the baby’s ear/s or place the EarCups around the baby’s ears.
To reduce the chance of
electrical interference, ensure
that the electrode cables are
placed away from the insert
earphone or EarCup transducer
box.

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RUN TEST
Press the Test button
IMPEDANCE CHECK
RESULTS
PASS result
REFER result
INCOMPLETE result
When the pass criteria for the test
is reached, a is displayed in
green above the measurement,
indicating the test has PASSED.
When the pass criteria for the test
is not reached within the
measurement time, is displayed
in amber above the measurement,
indicating the test is a REFER.
If the test is stopped before a
PASS or REFER is generated by
the system, is displayed above
the measurement indicating that
the test is INCOMPLETE.
An impedance check will begin. Impedances are indicated by the green/amber dots on the montage picture
as well as in numerical format on the screen.
When a dot is amber, it means the impedance is poor (> 50kΩ) for the
indicated electrode. Check that the surface electrode and cables are
connected correctly. It may be necessary to re-clean the skin or use a
conductive gel with the surface electrodes to achieve an acceptable
impedance. Testing cannot begin until impedance indictors are green
(< 50kΩ).