Welch Allyn Atlas Operator's Manual page 92

PROBLEM:
Heart Rate is not being displayed by ECG.
RECOMMENDED ACTIONS:
If ECG waveform is displayed:
Wait 20 seconds for heart rate to be determined and displayed.
Select different leads for display (wait 20 seconds after selecting). Some leads may sense QRS
complexes that have too low of an amplitude for the Heart Rate detection circuit.
Evaluate ECG waveform – excess noise, low QRS amplitude, arrhythmia could interfere with
determining stable heart rate.
If ECG waveform is not displayed:
Check connections:
ECG trunk cable at Atlas Monitor socket.
ECG leads at trunk cable.
ECG leads at electrodes.
Check for proper placement of electrodes on patient.
Check for good contact of electrodes to patient – shave, clean if necessary.
PROBLEM:
ECG waveform is noisy or erratic.
RECOMMENDED ACTIONS:
Change ECG Bandwidth from Extended to Monitor in Advanced Configuration menu.
Change ECG Gain to Automatic in Advanced Configuration menu.
If using a 3 wire lead set, ensure that ECG lead set is set to 3 wire in Advanced Configuration menu.
Check connections:
ECG trunk cable at Atlas Monitor socket.
ECG leads at trunk cable.
ECG leads at electrodes.
Check for proper placement of electrodes on patient.
Check for good contact of electrodes to patient – shave, clean if necessary.
Eliminate patient movement.
Move ECG cables away from other equipment and possible interference sources.
Evaluate interference sources:
Models 622xx, 623xx – unplug AC and run on battery power to determine whether interference is
from power line.
Move RFI sources and radio transmitters away from Atlas.
Turn off fluorescent lights.
PROBLEM:
ECG Leads Off fault not reported.
RECOMMENDED ACTIONS:
ECG Leads Off is only detected and reported on the Lead that is currently being monitored.
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