Datex-Ohmeda F-LM1 Technical Reference Manual page 180

Datex-Ohmeda S/5 Light Monitor
ECG
TROUBLE
HR numerical display
shows '---'
Unacceptable ECG
waveform
No ECG trace
Message 'Noise'
42
Document No. 8000060-1
CAUSE
No heart rate available.
1. Poor electrode or poor electrode
skin contact.
2. Poor electrode condition.
3. Improper site of electrodes.
4. Improper skin preparation.
Waveform not selected on screen.
High frequency or 50/60 Hz noise.
TREATMENT
1. If no ECG waveform, check LEADS
OFF message and connect the
leads.
2. If ECG waveform exists, check
heart rate source e.g. in the
ECG+RESP: ECG Setup.
1. Electrodes from different
manufacturers are used.
2. Too much/little gel is used.
3. Electrodes are dried out.
Check that electrodes are not placed
over bones, active muscles, layers of
fat.
Remove body hair.
Clean attachment site carefully with
alcohol.
Enter Monitor Setup and Waveform
fields and make adjustments.
Isolate noise source.