Chapter 2 Safety Notes - Gima ECG90A Manual De Uso

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Chapter 2
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 This device must be operated by medical staff trained technically
and professionally, preserved by special person.
2.4 The operator must read this instruction manual carefully before operation,
and operate the device according to operation regulations strictly.
2.5 The design of this device has mature consideration of security, but
operator should never neglect attention to device status and patient's
observation.
2.6 Please turn off the device and pull out power supply plug before cleaning
and disinfection.
2.7 Please don't use this device in the presence of flammable anaesthesia gas.
2.8 This device can act on heart directly.
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 5 seconds.
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 GB9706.1-2007. 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
• P wave and Q wave identification are not always reliable with intensive
EMG or AC interference. Neither are the ST segment and T wave with
baseline drift.
• Winding and unclear end position of S wave and T wave may cause error
in measurement.
• 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.
• In case of QRS low voltage, ECG axis calculation and border-point
identify of QRS wave are not always reliable.
• Occasionally, frequent ventricular premature complexes may be identified
as dominant beat.
• Merging of versatile arrhythmias may result in unreliable measurement
because of the difficulty in distinguishing P wave in such situation.
• This device is designed with auto analysis function, which only analyses
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