Chapter2 Safety Notes - Contec ECG1200G User Manual

ECG1200G Electrocardiograph - User Manual
1.2.23 Net Weight: 3.2Kg

Chapter2 Safety Notes

2.1 The power supply should be grounded properly before operation.
2.2 If there are any questions for the integrality of protective grounding cable, the device must be
run with built-in power supply.
2.3 Please pull out power supply plug before changing the fuse.
2.4 This device must be operated by medical staff trained technically and professionally,
preserved by special person.
2.5 The operator must read this instruction manual carefully before operation, and operate the
device according to operation regulations strictly.
2.6 The design of this device has mature consideration of security, but operator should never
neglect attention to device state and patient's observation.
2.7 Please turn off the device and pull out power supply plug before cleaning and disinfection .
2.8 Please don't use this device in the presence of flammable anaesthesia gas.
2.9 Don't rub the screen with edge tools or sharp materials.
2.10 If this device is used with cardiac defibrillator or other electric stimulating devices at the
same time, please choose Ag/AgCl chloride chest electrode and ECG lead cables with
defibrillation function. To prevent the metal electrode from burning patients' skin, the disposable
chest electrode should be used if the defibrillation time is over 5seconds. It is better not to use
this device with other electric stimulating devices at the same time. If it is necessary, there must
be professional technician guiding on the scene.
2.11 When connected with this ECG device, others must be Type I equipment complied with
IEC60601-1. Because the total leakage current may injure patient, the monitoring of leakage
current shall be carried out and taken charge by the connected devices.
2.12 Notes concerning ECG waveform measurement and analysis
(1) P wave and Q wave identify are not always reliable with intensive EMG or AC
interference. Neither are the ST segment and T wave with baseline drift.
(2) Winding and unclear end position of S wave and T wave may cause error in measurement.
(3) When R wave is uninspected caused by some leads off or QRS wave low voltage, the
heart rate measurement may deviate greatly from the correct.
(4) In case of QRS low voltage, ECG axis calculation and border-point identify of QRS wave
are not always reliable.
(5) Occasionally, frequent ventricular premature complexes may be identified as dominant
beat.
(6) Merging of versatile arrhythmias may result in unreliable measurement because of the
difficulty in distinguishing P wave in such situation.
(7) This device is designed with auto analysis function, which only analyses the ECG
waveforms it gathers and does not reflect all patient's states. Its analysis results may be not
in accordance with doctor's diagnoses. Therefore, the final conclusion concerning each
patient is up to the doctor basing on analysis results , patient symptoms, and other
examinations together.
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