12
OLYMPIC CFM 6000
Operator’s Manual
Placement method 2 — Frontal placement for hydrogel electrodes (use this
method if hair interferes with biparietal placement of hydrogel electrodes):
Figure 7
Frontal placement
a
The BLACK electrode (
1
) is to be placed at the center of the patient’s forehead
as close to the hairline as possible.
b
The YELLOW electrode (
2
) is to be placed approximately 37 mm to the
patient’s right of the center electrode (left if facing the patient).
c
The RED electrode (
3
) is to be placed approximately 37 mm to the patient’s left
of the center electrode (right if facing the patient).
3
Visually examine the electrode package for damage before opening it. Remove the
electrode set from the package, and examine the electrodes and leads. If damage is
apparent, discard the set.
4
Clean and dry the areas of the patient’s head where the electrodes are to be placed.
Do not use alcohol for cleaning: alcohol can increase impedance.
5
If using hydrogel electrodes, prepare the areas of contact prior to placement, as
follows:
a
Apply a small dot of skin prep gel, such as NuPrep, to each area of contact. You
can use a 2x2 or 4x4 gauze pad to apply the NuPrep.
b
Vigorously rub the NuPrep over the skin for 20 to 30 seconds, removing the
surface layer of dead skin to improve conductivity. Ensure that the entire surface
area to be covered by the electrode is prepared.
c
Thoroughly remove the NuPrep with a new, clean gauze pad, and make sure the
area is completely dry.
6
After the area is prepared, attach the electrodes, as follows:
For low-impedance electrodes, insert the needle subcutaneously up to the plastic
hub and secure as you would an IV.
For hydrogel electrodes, run a finger around the edges of the electrode for 20 to
30 seconds to ensure a secure seal.
NOTE
#
It is recommended that you prep and place one electrode at a time when possible.
NOTE
#
Where hair might present a barrier to good electrode contact, either shave the area or tamp
down the hair with water during cleaning, and then pat dry.
NOTE
#
Always apply the skin prep gel directly to the skin. Never apply it directly to an electrode
because it can increase impedance.
