Operation Manual easyScreen
8508935 Rev. 4
49
04/04/2019
IMPORTANT NOTE
: If any lotion has been applied to the baby's skin in the area of the
electrodes then this should be removed with soap and water or other electrode skin
preparation products such as NuPrep
®
.The
“ground” electrode is positioned above the
ear. The vertex electrode is placed on the forehead at the hairline, at a distance from
the ground electrode of approximately 3 fingers width. The mastoid electrode is placed
below the ear lobe. Depending on the size of the baby’s head, the position of the
BERAphone
®
’s vertex electrode can be adjusted by rotating the disc in which the
electrode is mounted. Place a small quantity (approx. 0.1 to 0.2 ml) of electrode gel on
the tip of a finger or gauze swaps and rub back and forth approximately 10 to 15 times
at each of the areas described above (rub the gel in the direction as indicated in Figure
61).
The baby should be in a relaxed and comfortable position to minimize any potential
muscular artifact and ensure optimum test outcome in the shortest time.
Make sure that the face, neck and shoulder of the baby are relaxed and free of any
obstructions.
IMPORTANT NOTE
: Make sure that the gel areas remain separate from each other.
This can be avoided by always rubbing in the direction from the face towards the back
of the head (see Figure 61) to ensure three distinct gel areas that do not contact each
other. Particularly critical is the distance between the electrode above the ear (ground
electrode) and the vertex electrode. Ensure that at least a finger-wide area between
electrodes remains free of electrode-gel. Merging of gel from one site into the other will
cause very poor recordings and increase the likelihood of “Refer” results.
Finally, using your finger to control the quantity of gel, apply a small drop of electrode-
gel on the tip of each electrode of the BERAphone
®
.
Place the BERAphone
®
on the baby's head (Figure 57). First position the mastoid
electrode below the ear. If the baby moves, follow the head movements with the
BERAphone
®
. When the baby has stopped moving, lower the other two electrodes into
place making sure to achieve good contact with the prepared skin sites.
Figure 57
IMPORTANT
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