otometrics Madsen AccuScreen PRO, User Manual

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GN Otometrics A/S 35
AccuScreen PRO User Manual Preparing for testing
General preparations of the patient
1. Position the patient so that you can easily access the ear to be
tested.
2. Grasp the pinna and gently pull back and slightly away from
the patient's head.
3. Look into the ear canal.
If you can see apparent narrowing of the ear canal, it is proba-
bly not straight.
Note:
Because newborn ear canals are very soft, they are easily
pressed out of shape. If this is the case, wait until the ear canal
returns to its original shape.
Release the pinna and try again. Gently massaging the area
may help opening the ear canal.
4. Inspect the ear canal to make sure it is clear of vernix or debris
as this may affect the result of the test. Clean the ear canal if
required.
5.5.1 Placing electrodes for ABR testing
Applies to AccuScreen PRO A, TA, DA, TDA.
Skin preparation
Note:
Do not use alcoholic skin cleaning material or surgical spirits to pre-
pare the skin as they may cause the skin to dry out, leading to a high-
er skin impedance.
1. If you are using separate electrode cables and electrodes, con-
nect the electrodes with the electrode cables.
2. Connect the electrode cables to the triple plug (A). Make sure
that the position of the individual electrode corresponds with
the colour code on the drawing of the plug.
Place the electrodes on the patient as follows:
W
hite: High on the forehead
B
lack: Cheekbone (reference electrode)
R
ed: On the nape of the neck
3. Make sure that the electrodes fit tightly on the skin.
W B R
A