Illustration 2: Normal Waveform
Illustration 3: Noisy ECG Trace (extra trigger at #4)
Illustration 4: Elevated T-wave (causing double trigger)
Illustration 5: ECG Trace (premature beat arrhythmia at trigger #3)
12.
Complete these activities to improve the ECG trace, if needed.
○
Check the cable connections.
○
If the external ECG trigger device is selected, position it away from the table and gantry
to minimize sensitivity to noise.
○
Consider an alternative electrode placement: remove electrodes, prep the patient again,
apply fresh electrodes, and repeat the impedance check.
○
Check default electrode selection on the active ECG trigger device.
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
336 2 Cardiac Workflow
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