User's Manual Part 1

1-10
If scanned directly across the plane of the ECG electrode, a slight image distortion may be
seen at the skin surface where the electrode is positioned.
Keep the ECG ePod and SpO
2
oPOD out of the image Field of View (FOV). If scanned
directly across the plane of either POD, image distortion may be seen where the POD(s)
are positioned.
Perform the following to minimize risk of RF burn:
1. Keep ePOD and ECG lead wires from pressing against the bore of the MR magnet.
2. RF burn risk increases when multiple sensors/cables are in use. Such combinations are
not recommended.
3. Should power levels greater than a SAR of 4 w/kg whole body average be used, the risk
of patient heating or burn greatly increases. As a result, monitoring of ECG at power
levels of greater than 4 W/Kg is not recommended for the general patient population.
Such monitoring should only be attempted on conscious patients with good temperature
reflex so they may warn the operator of excessive heat at the monitoring sites.
4. High RF energy may cause patient heating or burns. For scans with whole body average
SAR >2 W/Kg, follow best practices such as limiting scan time to 5 minutes and pausing
at least 3 minutes between scans to allow patient to cool.
1.3.7. Vital Sign Parameters
To ensure that alarm limits are appropriate for the patient being monitored, check the limits
each time the 3800 MRI monitoring system is used.
1.3.7.1. ECG
For best ECG and Heart Rate monitoring, always select the optimum lead view which has the
least artifact and largest QRS complex being detected for monitoring use.
Failure to respond to a Lead Fail alarm will cause a lapse in your patient’s monitoring. Always
respond promptly to this and any other alarms.
MRI induced gradient or radiofrequency artifact can sometimes cause inaccurate heart rates.
Inspect the ECG waveform during MRI scanning if spurious heart rates are observed.
B0 (static) magnetic field artifact can present artificially-induced augmented T waves during
ECG monitoring. Due to the effects of the magnetic field on the moving blood of the patient,
follow the recommended ECG electrode placement to minimize this type of artifact.
An inoperative ECG is indicated by absence of an ECG trace. See section 2.2.12.4.2
Heart rate values may be adversely affected by cardiac arrhythmia, or by operation of electrical
stimulators.
Ensure that the IRadimed MRI electrodes and / or ePOD wire set do not come in contact with
any other conductive parts including Earth.
The 3880 patient monitor is not intended for use on patients with pacemakers or electrical
stimulators.