Philips IntelliVue TRx Instructions For Use Manual page 127

Problem
60-Cycle (AC) Interference Poor electrode placement.
Muscle Artifact
Irregular Baseline
Draft - 1 Aug 08
Cause
Possible non-grounded
instrument near patient.
Tense, uncomfortable
patient.
Poor electrode placement.
Tremors.
Diaphoresis.
Poor electrical contact.
Respiratory interference.
Faulty electrodes.
Dry electrodes.
Optimizing ECG Measurement Performance
Remedy
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.
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).
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.
ECG Monitoring 6-33