4: ECG Monitoring
Preparing to Monitor ECG
CAUTIONS: Beware of patient cables, including ECG monitoring equipment when used with high frequency surgical
Conductive parts of electrodes and associated connectors for applied parts, including the neutral
electrode, should not contact other conductive parts including earth.
NOTES: Signals from TENS or ESU units can cause artifact.
For patients who exhibit intrinsic rhythm only, the risk of missing cardiac arrest may be reduced by
monitoring these patients with low heart rate limit at or slightly above the basic/demand pacemaker rate.
A low heart rate alarm alerts you when the patient begins pacing. Proper detection and classification of
the paced rhythm can then be determined.
When using the ECG Analog Output, detected internal pacemaker pulses are inserted into the output as
pulses of less than 3.5 ms in width when measured at 50% of the peak of the pulse. The amplitude of the
inserted pulse is >40% and <70% of the detected pacemaker pulse amplitude for pulses widths of 0.5 ms
to 2.0 ms.