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Repair Information
Troubleshooting Menus
3.16
Troubleshooting Menus
3.16.1
ECG Troubleshooting
MESSAGE/PROBLEM
REASON
SOLUTION
Noisy ECG traces
1
Loose or dry electrodes.
2
Defective electrode wires.
3
Patient cable or leads are
routed too close to other
electrical devices.
1
Apply fresh, moist
electrodes.
2
Replace wires as
necessary.
3
Eliminate 60Hz
interference.
Excessive Electro-surgical
Interference
1
Wrong ECG cable used.
1
Use ESIS ECG cable with
internal filter block.
NOTE: Respiration
monitoring via the
ECG electrodes will
not be available
when using an ESIS
ECG cable.
Muscle Noise
1
Inadequate skin
preparation prior to
application of electrode,
tremors, tense subject,
and/or poor electrode
placement.
1
Repeat skin preparation
and electrode location
procedures.
2
Apply fresh, moist
electrodes.
3
Avoid areas of the torso
that are very muscular.
Excessive alarms: heart rate,
lead fault
1
Electrodes dry
2
Alarm limits set too close
to patient's normal heart
rate.
3
R-wave wrong size.
4
Excessive patient
movement or muscle
tremor.
1
Re-prep skin and apply
fresh, moist electrodes.
2
Readjust.
3
Must have a higher
amplitude than the other
ECG waves, like the P
and T waves.
4
Reposition electrodes and
secure with tape, if
necessary.
ECG Noise
1
External interference.
2
Patient movement.
1
Check patient.
2
Check electrode contacts
/reposition electrodes/
cable.
3
Check environment for
source of interference.
No ECG Waveform
1
Gain set too low.
2
Lead wires and patient
cable not fully or properly
inserted.
3
Cable or lead wires
damaged.
1
Readjust as required (Set
via the
Size
key).
2
Check for proper
insertion.
3
Check with lead
continuity tester.
