Note— When switching from EASI to standard monitoring, there is a
momentary loss of data.
For Paced Patients
The output power of the MX40 and other sources of radio frequency
energy, when used in the proximity of a pacemaker, can be sufficient to
interfere with pacemaker performance. Due to the shielding effects of
the body, internal pacemakers are somewhat less vulnerable than
external pacemakers. However, caution should be exercised when
monitoring any paced patient.
In order to minimize the possibility of interference, position electrodes,
electrode wires, and the MX40 as far away from the pacemaker as
Consult the pacemaker manufacturer for information on the RF
susceptibility of their products and the use of their products with the
IntelliVue Telemetry System. See the IntelliVue Information Center
Instructions for Use for additional information on monitoring paced
When an external pacemaker is being used on a patient, arrhythmia
monitoring is severely compromised due to the high energy level in the
pacer pulse. This may result in the arrhythmia algorithm's failure to
detect pacemaker non-capture or asystole.
Pacemakers that create fusion beats (pace pulse on top of the QRS
complex) cannot be detected by the monitor's QRS detector.
For paced patients who exhibit only intrinsic rhythm, the monitor can
erroneously count pace pulses as QRS complexes when the algorithm
first encounters them, resulting in missed detection of cardiac arrest.
The risk of missing cardiac arrest can be reduced by monitoring these
patients with the low heart rate limit at or slightly above the
basic/demand pacemaker rate. A low heart rate alarm notifies you when
the patient begins pacing. Proper detection and classification of the
paced rhythm can then be determined.
ECG and Arrhythmia Monitoring