27/04/04 ©
Söring
Users manual RF-units
1
not valid for MBC600
-16-
body, but under no circumstances at the thorax, because in this case the heart would
be located in the direct current path.
Fig. 4.1.Suggested placement of conventional patient electrodes and relevant operation fields.
-
Permanent electrodes must be carefully secured with a flexible bandage or with elastic
bands. Wet towels, paste for electrodes, and so on are not to be put underneath. On the
other hand paste may be used with adhesive disposable electrodes, if drying out of the
paste is avoided. To insulate the patient electrode also against its surroundings it is to be
wrapped with a bandage after setting.
Fig. 4.2.
Correct fastening
-
When using self-adhesive disposable patient electrodes building-up of blisters beneath
the electrode may occur due to incorrect handling, wrong electrode paste, etc. Thereby
the contact surface is reduced and burns are possible.
-
The contact surface for the patient electrode has to be cleaned, degreased, and freed
from strong growth of hair if necessary in order to obtain a low transfer resistance.
-
Alcohol should not be used for skin cleaning because it dries out the skin and causes
increased transfer resistance at the contact area of the patient electrode.
-
The contact area of the patient electrode should be moistened by carefully rubbing the
skin with a salt solution in order to obtain a good conductivity. Spraying should be
avoided because in this case salt solution could get underneath the patient.
