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unit. Readings may be inaccurate for a short time after or during using defibrillator or electro-surgical unit.
Transient caused by cable circuitry blocks while monitoring may cause artifact on ECG signals yielding wrong heart
rate reading and even triggering false alarm. If the electrodes and cable are located in proper places according to
this manual’s instructions for using electrodes, the chance of this transient occurrence will be decreased.
ECG cable and/or lead wires may be damaged while using defibrillator. If the cable and/or lead wires are used
again, please do the functional check firstly.
When the monitor is inoperable due to overload of ECG signal or saturation of any part of the amplifier, it will
prompt “Lead(s) off” to remind the operator.
The user should ensure that no predictable hazard will be caused by the summation of leakage currents when
several items of monitor are interconnected.
When plugging or unplugging the ECG cable, be sure to hold the head of the connector and pull it out.
7.3 Preparing to Monitor ECG
7.3.1 Preparing the Patient and Device
1. Skin preparation
The quality of ECG waveform displayed on the monitor is a direct result of the quality of the electrical signal received at
the electrode. Proper skin preparation is necessary for good signal quality at the electrode. A good signal at the electrode
provides the monitor with valid information for processing the ECG data. To ensure enough electrolyte material on the
skin of patients, you need to moisten the measuring sites with 70% isopropyl Ethanol. This will usually be sufficient for
ECG monitoring for a short time (30 to 60 minutes).
2. Connect the cable to the connector marked with the “ECG” icon on the signal input panel.
3. Place the electrode to the patient according to
Section 7.3.2.
4.
Attach the ECG lead wires to the
electrode
5. Make sure the monitor is turned on and is ready for monitoring.
6. After starting the monitor, if the electrodes become loose or disconnected during monitoring, the system will display
“
LEAD OFF
” on the screen to alarm the operator.
It might not display ECG waveform when using ECG cable with 3 lead wires while the setting of “Cable” is set as “5”
in the ECG parameter setup menu. Only single channel of ECG signal can be obtained while using 3 lead wires and
the “Cable” is set as “3”, this ECG signal can be selected between Lead I, Lead II and Lead III.
In order to obtain other Leads of the ECG signals, such as aVL, aVR, aVF and V, the ECG cable with 5 lead wires should
be used and the “Cable” should be set to “5”. At this situation, 7 Leads of ECG signal (lead I, II, III, aVL, aVR, aVF, V)
can be obtained and displayed simultaneously.
Note:
If any side-effect such as allergic or itchy reaction is found, remove the electrodes from the patients immediately.
The symbol indicates that the cable and accessories are designed as the “CF” type level for protection against
electric shocks and with defibrillation-proof capability.
