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Directions for use
ECG alarms and messages
Message
HR – asystole/ASY
HR – ventricular
fibrillation/VF
HR – artifact
HR > [upper limit]
HR < [lower limit]
HR – lead off
Possible cause
No QRS detected for 4 seconds.
No organized ventricular rhythm
detected.
Patient has moved.
Bad electrode.
Interferences by other devices.
Heart rate higher/lower than
alarm limit.
Electrode lose/defective.
Patient cable defective.
Monitoring and Measurements
Suggested action
Check the patient.
ECG signal lower than 0.5 mV.
Check the patient.
ECG signal lower than 0.5 mV.
Calm the patient.
Checking the electrode pads.
Remove source of the interference.
Check the patient.
Check and reapply/replace electrodes.
Replace the patient cable.
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