Pacer Fusion Mode; Device Interference With Pacemaker; Monitoring - Dräger Infinity M300 Series Instructions For Use Manual

Pacer Fusion mode

Pacer Fusion mode offers increased detection sensitivity to fused paced beats, which reduces false
asystole and low heart rate alarms.
WARNING
Pay close attention to pacemaker patients being monitored in fusion mode because this mode
may increase the risk of falsely counting pacemaker spikes as QRS complexes, thus failing to
detect cardiac arrest.
CAUTION
Fusion mode pacer detection is not intended for use with large-signal, unipolar pacemakers. It is intend-
ed for use only with biphasic pacemakers. Observe the following:
– Select fusion mode only in situations where it becomes necessary to suppress repeated false asys-
tole and/or false low heart rate alarms.
– Before selecting fusion mode, be certain that the patient has a biphasic pacemaker (external or im-
planted) and that it is accurately programmed as appropriate for that patient.
– Do not use fusion mode if you are uncertain as to what type of pacemaker is being used.
Device interference with pacemaker monitoring
WARNING
Wireless monitoring could lead to possible interference with pacemaker monitoring due to WLAN
(wireless local area network).
The following devices can interfere with pacemaker monitoring:
– Impedance-derived rate response pacemakers
These pacemakers emit pulses that adjust the pacemaker rate to the respiratory rate. These pulses
could be falsely interpreted as pacer pulses. For impedance-derived rate response pacemakers, mod-
ify the electrode placement until the blue spikes on the waveform disappear since they are not related
to real pacer impulses.
– Infusion or roller bypass pumps
Interference from these devices can cause pacer spikes to appear on the waveform although the ECG
appears normal. To determine if the pump is the cause of the artifact, turn it off, if possible. To minimize
the artifact, choose the lead with the best signal or replace the electrodes. Rerouting invasive pressure
tubing away from the infusion tubing can also improve the ECG signals.
– Line isolation devices
To minimize the effect of line isolation devices, which can cause temporary disturbances in the ECG
signal, follow these precautions:
– Choose the lead with the best signal for ECG monitoring.
– Check the ECG electrodes; replace them, if necessary.
Instructions for use – Infinity
ECG, arrhythmia, and ST segment monitoring with M300
® M300 and M300+ series – VG3.0 151