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3. Identify the source of the alarm.
4. Take proper action to eliminate the alarm condition.
5. Make sure the alarm condition is corrected.
Chapter 7 ECG Monitoring
7.1 Introduction
The electrocardiogram (ECG) is primarily a tool for evaluating the electrical events within the heart. The ECG signals can
be detected by electrodes at the surface of the skin, this device connects ECG signals and represents them on the monitor
as waveforms and numerical value such as heart rate. The S-T segment measurement and arrhythmia detection can be
done as well by the ECG signals.
The ECG electrodes connect the patient and the lead wires and/or ECG cable, the lead wires and/or cable connect to
the monitor. The electrode type selection and the locations of the electrodes are very important to ensure accurate ECG
measurement.
7.2 Safety Information
This patient monitor can only be equipped with ECG cable and/or lead wires provided by the manufacturer; using
those from other suppliers may cause improper performance or poor protection while using defibrillator.
Using the same type of qualified and authorized electrodes which should be within its effective life on the same
patient. If any side-effect such as allergic or stimulus skin is found, the measurement should be stopped at once.
It is prohibited to apply the electrode to the patient with lesion and body putrescence.
To the patient with pacemaker, normally the heart rate meter does not count the pacemaker pulse due to the
function of pacemaker pulse inhibition, but for the pacemaker with overshoot pulse, the inhibition function may
not be fully effective. So it is important to observe the ECG waveforms carefully and do NOT rely entirely on the
heart rate display and alarm system when monitoring the pacemaker patient.
The improper connection with electro-surgical unit may not only cause burns, but also damage the monitor or
arouse deviations of measurement. You can take some steps to avoid this situation, such as do NOT use small
ECG electrodes, choosing the position which is far away from the estimated Hertzian waves route, using larger
electro-surgical return electrodes and connecting them with the patient properly.
In operation mode, the monitor can be used with electro-surgical unit. The monitor’s operator should ensure
the safety of the patients if in use with electro-surgical unit in accordance with the instructions of this manual.
After the elimination of high frequency signal and high frequency electromagnetic field, the monitor can be set
to the previous operation mode within 10 seconds without losing any stored data.
Do not use the monitor with electro-surgical unit in non-operation mode, nor with large-scale electrical equipment
such as ultrasonic, radiation and magnetic resonance imaging, which may cause electromagnetic interference to
the monitor or harm the monitor’s operator.
Conductive parts of electrodes, lead wires and cable are forbidden to contact any other conductive parts (including
ground).
This patient monitor can resist against the discharge of defibrillator and the interference from the electro-surgical
