RETeval Complete Option
RET
eval
Device User Manual 53
Clean the electrode
locations with NuPrep,
an alcohol-based skin
prep pad, or just an
alcohol wipe.
Connect the gold cup
recording electrode to
Oz. To locate Oz,
identify the inion, the
bony protrusion at the
back of the skull. If the
patient is an adult with a
normal-sized head, the
Oz is located about 2.5 cm (1 inch) above the inion on the midline. If the patient has an abnormal-
sized head, is an infant, or if it is important that the electrodes are placed in the exact locations,
making a few measurements will determine the locations for the recording sites. First, identify
the nasion, the bony ridge along the brow line just above the nose on the front of the head.
Measure the distance from the nasion, over the head, to the inion. Oz is located on the midline,
10% of the distance from the inion to the nasion above the inion. Part any hair to expose the
skin at the recording site, and vigorously clean the skin. If the patient’s hair is long, bobby pins
or other clips should be used to hold the hair out of the way during cleaning and electrode
placement. Put a generous portion of electrode cream in the cup of the electrode and press the
electrode firmly into place on the scalp. Cover the electrode with a 2 to 3 cm (1 to 1½ inch)
square of tissue paper, and press firmly again.
Place a Ag/AgCl ECG electrode as the negative electrode at hairline on the forehead. Fill the cups
of the ear clip electrode with electrode gel (not cream) and clip it to the patient’s ear lobe as the
ground / right leg drive electrode.
On the device side, use the RET
eval
adapter cable for DIN
electrodes in lieu of the Sensor Strip lead. Connect the gold
cup recording electrode to the red lead of the adapting cable.
Connect an Ag/AgCl electrode to the black lead of the adapting
cable as the negative input (reference). Connect a gold cup ear
clip to the green lead of the adapting cable for the ground / right-leg drive connection.
Part numbers for these items can be found in Purchasing supplies and accessories on
page 101 or on the LKC store (https://store.lkc.com/reteval-accessories).
To Next Page
Loading...
