User's Manual

Operator’s Manual ZM-520PA/521PA/530PA/531PA 65
• Turn the pacing spike detection to ON on the receiving monitor when monitoring a
pacemaker patient. Pacing pulse is detected by the transmitter and transmitted to the
monitor. If the pacing spike detection is turned OFF, QRS and pacemaker spike might
not be distinguished and pacemaker failure might not be recognized.
Use with an Electrosurgical Unit
For use with an electrosurgical unit (ESU), this transmitter has a circuit to protect the patient from
skin burn and to reduce ESU interference on the ECG waveform. However, the effectiveness of
this circuit depends on electrode position and transmitter setup. With an ESU, pay attention to the
following points.
WARNING
When the transmitter is used with an electrosurgical unit (ESU), firmly attach the
entire area of the ESU return plate. Otherwise, the current from the ESU flows into
the electrodes of the transmitter, causing electrical burn where the electrodes are
attached. For details, refer to the ESU manual.
NOTE
Noise generated from an electrosurgical unit may interfere on an ECG waveform, but will
not damage it.
• Measure with 3-electrode lead
Use the minimum number of electrodes. Use new electrodes.
• Minimize noise
1. Select an ECG lead where the active ECG electrodes are located as far from the incision as
possible.
2. Position the + and – electrodes as close as possible.
3. Select the leads where the angle (θ) between the active electrodes and the incision is as small
as possible.
4. Set the electrosurgical return plate as close to the incision as possible.
Make small
Incision
Return plate
As far as possible from electrode and
as near as possible to incision.

૞ᚑ㒙ጊޓᖘᏆ ᛚ⹺⌀ᨩޓ⌬