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Using the DPOAE module
4.4.1
Preparing for the test
Patient instruction
Place the patient on a bed or comfortable chair or on an examination table if necessary. Small children may
feel more comfortable sitting on a parent's or nurse's lap. Show the probe to the patient and then explain the
following:
The aim of the test is to screen the hearing organ for its functionality
•
The tip of the probe will be inserted into the ear canal and has to make a good seal
•
Multiple tones will be heard during the test
•
•
No participation is expected from the patient
Coughing, moving, talking and swallowing will disturb OAE test results
•
Visual inspection of the ear canal
Check the external ear canal for wax with an otoscope and remove excessive wax to prevent the probe
opening from clogging which will inhibit testing. Excessive hairs may have to be cut.
If contraindications exist, the patient should be inspected by ENT or medical specialist.
Probe performance is crucial to OAE test results. We recommend that you conduct a probe test at the
beginning of each day before starting to test on patients to ensure that the probe is functioning correctly.
Prepare the equipment
1. Turn on Lyra by connection the USB to the PC.
2. Open the OtoAccess
3. Double click on the IA OAE Suite software. Icon to launch the software and click on the OAE module
tab DP.
4. Select the desired test protocol from the dropdown list.
5. Select the ear for testing.
Before conducting the OAE test, ensure that the probe tip is clean and free of wax and/or debris.
Test environment
Always conduct the OAE test in a quiet test environment, high ambient background noise will affect the OAE
recording.
6. Select an ear tip size that will ensure a good seal in the ear canal.
7. Check the probe check status in the software to verify a good seal.
When the probe is detected to be Out of ear the color is red, In ear the color is green.
When Blocked or Too Noisy the colored bar is amber.
8. Results for DP-Gram testing, OAE present right side and no OAE response left side.
The type of test (DP-Gram or DP-IO) and ear side symbol and color is written on the top of the graph.
The green checkmarks indicates the DP points there have met the DP criteria as set in the protocol, as
show above for the right ear.
The DP points having no checkmark did not meet the DP criterion and can be either below the noise
or absent.
The DP points are line connected with the ear side color, to give an overall impression of the DPOAE
levels.
The grey area is the background noise in the DP test.
D-0119867-C – 2019/03
Lyra - Instructions for Use - EN
or Noah database and enter new patient details.
TM
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