Optimizing ECG Measurement Performance
ECG Monitoring
6-33
Problem Cause Remedy
60-Cycle (AC) Interference Poor electrode placement.
Possible non-grounded
instrument near patient.
Re-apply electrodes, using good skin
preparation (see “Positioning ECG
Electrodes” on page 6-10).
Disconnect electrical appliances near
patient (one at a time) by pulling wall
plugs, to determine faulty grounding.
Have engineering check grounding.
Muscle Artifact Tense, uncomfortable
patient.
Poor electrode placement.
Tremors.
Diaphoresis.
Make sure patient is comfortable.
Check that electrodes are applied on
flat non-muscular areas of the torso;
apply fresh electrodes if necessary,
using good skin preparation (see
“Positioning ECG Electrodes” on page
6-10).
Irregular Baseline Poor electrical contact.
Respiratory interference.
Faulty electrodes.
Dry electrodes.
Re-apply electrodes, using good skin
preparation (see “Positioning ECG
Electrodes” on page 6-10).
Move electrodes away from areas with
greatest movement during respiration.
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