User's Manual

ECG Troubleshooting Guide
Refer to the Problem Solving sections in this chapter and in the ECG chapter for further monitoring tips.
Clinical Situation Possible Cause Solution
Noisy signal ■ ECG frequency response set to
extended mode
■ Select monitor mode
■ Electrodes dry or poor skin adhesion ■ Repeat skin preparation and apply
new, moist electrodes
Baseline wanders ■ Patient moving excessively ■ Secure lead wires by stress-looping to
the patient
■ Respiration artifact ■ Re-position electrodes
■ Electrodes dry or poor skin adhesion ■ Repeat skin preparation and apply
new, moist electrodes
Low amplitude ECG ■ Skin improperly prepared ■ Abrade skin and reapply electrodes
■ Lead selected not providing QRS
complex with greatest amplitude
■ Select another lead for monitoring
■ Electrodes could be positioned on
bone or muscle mass
■ Re-position electrodes
ECG will not learn ■ ECG signal too noisy ■ Check lead wires and electrodes, then
relearn patient rhythm
■ ECG voltage not within threshold.
ECG VOLTAGE TOO LOW
message may be displayed
■ Select a different lead or adjust
electrode location
Excessive alarms ■ Electrodes dry or poor skin adhesion ■ Repeat skin preparation and apply
new, moist electrodes
■ Alarm limits set too close to normal
patient heart rate
■ Re-adjust alarm limit
■ Excessive patient movement or
muscle tremor
■ Reposition electrodes and secure
electrodes with tape if necessary