Fixed Mode Pacing 7 Noninvasive Pacing
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NOTE Spontaneous beats may be present which are not associated with the delivery of pace pulses.
Additionally, if the patient’s heart rate is above the pacer rate, pace pulses are not delivered and,
therefore, pacing markers do not appear.
To stop delivery of pace pulses, press [Pause Pacing]. Once paused, press [Resume
Pacing] to resume delivery of pace pulses.
You may also stop delivery of pace pulses by moving the Therapy Knob off the Pacer position.
WARNING When Pacing in demand mode, the ECG cable must be directly connected from the patient to the
HeartStart MRx.
WARNING If you are using the pacing function with battery power and the Low Battery Alarm is annunciated,
connect the device to external power or insert a fully charged battery.
NOTE Routinely assess the patient’s cardiac output by assessing peripheral pulses.
NOTE Pacing will not start if there is a problem with the multifunction electrode pads connection or patient
contact. Pace pulses will not be delivered if there is a problem with the ECG monitoring electrodes
connections. If either situation occurs, a system message is displayed to alert you that a lead is
disconnected or that the pads have a poor connection.
Fixed Mode Pacing
To pace in fixed mode:
1 Turn the Therapy Knob to the Pacer position.
The message, Pacing Paused, appears and indicates that the pacing function is enabled, however,
pace pulses are not being delivered. Pacing is enabled in demand mode, with the configured lead
displayed in Wave Sector 1. If the configured lead is set to Pads, Lead II or the first available
monitoring lead is displayed.
2 Change the pacer mode to fixed mode, using the menu selections shown below in Figure 54
Figure 54 Changing Pacer Modes
3 Use the Lead Select button to select the desired lead for viewing.
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