Fukuda Denshi DSL-8001, Operation Manual

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Electrosurgery Safety
WARNING
The monitoring system contains protection against interference
generated by electrosurgical instruments. However, operating
conditions, surgery site with respect to the location of ECG
electrodes, or the type of instrument used, may cause noise on
the ECG. Noise is generated at the tip of an electrical knife and
is difficult to completely eliminate because of the frequency
components of the ECG. To reduce electrosurgical interference,
take the following precautions:
Installation Location
Locate the electrosurgical unit as far as possible from this
unit and the patient cable. This will help reduce interference
on the ECG through the monitor or cables.
Power Supply
Connect the electrosurgical unit to a power supply that is
different from that of the monitor. This will help prevent
interference through the power cable.
Electrode Placement
The amount of interference is considerably different
depending on the electrode position and surgery site. Place
the ECG electrodes as far away as possible from the
surgery site and the ground plate. Do not place electrodes in
the path between the surgery site and the ground plate. If
the electrodes are placed in this path, the amount of
interference will be quite large. Position (+) and (–)
electrodes as close as possible to each other.
Ground Plate
When using electrosurgical instruments, make sure the
contact between the patient and the ground plate is secure.
If the connection is incomplete, the patient may suffer from
burn at the electrode site.