User's Manual

8 - 5
WARNING
• To reduce the hazard of burns during use of electrosurgical units (ESU), the ECG electrodes should
not be located between the surgical site and the ESU return electrode.
• Never entangle the ESU cable and the ECG cable together.
• When using ESU, never place ECG electrodes near the grounding plate of the ESU, as this can cause a
lot of interference on the ECG signal.
• When using electrosurgery units, ensure proper contact of the ESU return electrode to the patient to
avoid burns at monitor measurement sites. Also ensure that the ESU return electrode is near the
operating area.
8.4.5 Choosing the ECG Lead Type
To choose ECG lead type, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the ECG dialog.
2. Select the Setup tab.
3. Set Lead Set according to the lead type you are going to use. The default lead type is Auto. In this case, the
monitor automatically detects the lead type.
8.4.6 Checking Paced Status
It is important to correctly set the patient’s paced status before you start monitoring ECG. The paced symbol
is displayed when Paced is set to Yes . Pace pulse markers “|” are displayed on each ECG waveform whenever a
pacer signal is detected. If Paced is set to No or unspecified, the symbol will be shown in the ECG waveform
area.
To change the paced status, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the ECG dialog.
2. Select the Pacer tab.
3. Set Paced to Ye s or No.
You can also change the patient’s paced status from the Patient Management dialog. For more information, see
5.2.1Entering the Patient Management Dialog.
If you did not set the paced status, the monitor issues a prompt tone when pace pulse is detected. At the same
time, the paced symbol flashes and the message Please check if the patient has a pacemaker? appears in
the ECG waveform area. Check and set the patient’s paced status.
WARNING
• For paced patients, you must set Paced to Yes. If it is incorrectly set to No, the monitor could mistake
a pace pulse for a QRS complex and fail to alarm when the ECG signal is too weak. On ventricular
paced patients, episodes of ventricular tachycardia may not always be detected. Do not rely entirely
upon the system’s automated arrhythmia detection algorithm.
• False low heart rate or false asystole alarms may result with certain pacemakers because of
pacemaker artifacts, such as electrical overshoot of the pacemaker overlapping the true QRS
complexes.
• Do not rely entirely on rate meter alarms when monitoring patients with pacemakers. Always keep
these patients under close surveillance.
• The auto pacer recognition function is not applicable to pediatric patients, neonatal patients, and
patients with NMT monitoring.