8-27
Symptoms Possible Cause Correction Action
Cable or lead wires
damaged
Change cable and lead wires.
Excessive alarms: heart
rate, lead fault
Electrodes dry Repeat skin preparation as described in
8.3.1 Preparing the Patient and
Placing the Electrodes and apply
fresh, moist electrodes.
Excessive patient movement
or muscle tremor
Reposition the electrodes.
Replace fresh and moist electrodes if
necessary.
Low Amplitude ECG
Signal
Gain set too low Set the gain as required. For details,
refer to 8.5.8 Changing ECG Wave
Settings.
Electrodes dry / old Apply fresh and moist electrodes.
Skin improperly prepared Repeat skin preparation as described in
8.3.1 Preparing the Patient and
Placing the Electrodes.
This could be the patient’s
normal QRS complex
Verify with another well-functioning
monitor.
Electrode could be
positioned over a bone or
muscle mass
Move ECG patches away from the
bone or muscle mass.
No ECG Waveform Gain set too low Set the gain as required. For details,
refer to 8.5.8 Changing ECG Wave
Settings.
Lead wires and patient cable
not fully or properly inserted
Check that the leadwires and patient
cables are properly connected.
Cable or lead wires
damaged
Change cable and lead wires.
Base Line Wander
Patient moving excessively Secure leadwires and cable to patient.
Electrodes dry or loose Repeat skin preparation as described in
8.3.1 Preparing the Patient and
Placing the Electrodes and apply
fresh and moist electrodes.
ECG Filter set to ST or
Diagnostic mode
Set ECG Filter to “Monitor” mode.
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