ECG and Heart Rate
VF4 Infinity Gamma Series Page 8-3
Patient Preparation
Selecting and Preparing the Electrodes
There is a wide selection of reusable and prepackaged, pre-gelled,
and disposable electrodes to choose from.
Always select the best electrode for your particular monitoring
situation. Because of their stability, the use of Ag/AgCl reusable
or disposable electrodes is recommended.
If using reusable electrodes, place a ¼ to ½ inch (½ to 1 cm) of
conductive gel in the spacer before application and attach the
electrodes to the skin with an adhesive ring.
If using pre-gelled electrodes, verify that there is enough gel in
the gel-filled area. Never use disposable electrodes after their
expiration dates or when the gel has dried out.
Preparing the Patient’s Skin
WARNIN G: Conductive parts of electrodes and connec-
tors (including the neutral electrode) should not contact
other conductive material, including earth.
The quality of ECG monitoring depends largely on the strength
and quality of the signals received by the electrodes. Careful skin
preparation and application techniques assure strong signals with
minimal artifact and interference.
Select flat, non-muscular sites to position the electrodes and fol-
low the clinical techniques of your hospital. We suggest the fol-
lowing standard technique:
1. Prepare the skin by clipping or shaving excess hair.
2. Remove any skin residue or oils with an alcohol pad.
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