• The easyScreen BERAphone
®
does not require pressure to hold it in place. You
are supporting the BERAphone
®
only to maintain the position of the electrodes
and ear cushion on the baby’s head. The ear cushion must be placed so that it
is surrounding the ear. Make sure there are no obvious gaps between the
cushion and the baby’s skin as this may reduce the intensity of the acoustic
stimulus delivered to the baby’s ear and increase the chance of a “Refer” test
outcome. If necessary reposition the BERAphone
®
or change the position of the
vertex electrode in its rotating housing to achieve a better fit.
• Never place the electrodes in the ear canal.
• All electrodes must contact the skin well.
Preparing for Classic ABR Testing
ABR recording requires placement of 3 electrodes. The ideal electrode positions are:
• Center of the forehead at the hairline
• Cheek (either side) or shoulder
• Nape of the neck
An alternate electrode montage can be used as seen below. However, the screening
time for the right ear may be prolonged when using this montage.
• Center of the forehead at the hairline
• Right mastoid
• Left mastoid
Regardless of the electrode placement you choose, the skin at the electrode locations
must be cleaned with an electrode skin preparation product. Rub the product gently,
but briskly on the skin at each position.
Preparing the skin helps to achieve good contact (i.e. low impedance) between the skin and
the electrode. After cleaning, remove any residue of the skin prep product so that the skin
is dry. This will help to ensure good adhesion of the disposable electrode to the skin.
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