Medrad Veris 8600, Руководство по эксплуатации

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5 —5
5 —ECG
• There is no defibrillator synchronization output on the Veris
monitor. Make no connections between the Veris system and a
defibrillator.
• PACEMAKER PATIENTS: This device does not include
pacemaker spike rejection capability. Heart rate readouts
derived from the ECG patient connections are likely to display
erroneous high or erratic rates when a pacemaker is in use.
Keep pacemaker patients under close surveillance. For
pacemaker patients it may be advisable to select the SpO
2
function as the primary heart rate source.
• The heart rate calculated by the ECG module may be affected
by cardiac arrhythmia.
• Leakage currents may increase if other equipment is
interconnected to the patient. The increased leakage currents
may present a hazard to the patient.
• ECG electrodes can cause skin irritation. Change the electrodes
and reposition every 24 hours or sooner if there is sign of
inflammation.
• Place the ECG module out of the imaging volume. Make certain
that the module is stationary (i.e., not moving or vibrating)
• All metallic wires going into the magnet bore will drain off RF
power; the fiber optic cables are non-conductive and will not
drain off power or heat up. For RF exposures up to specific
absorption rates (SAR) of 2.0 W/kg, the ECG leads will not
cause patient burns when they are properly insulated and free
of loops. Monitoring of ECG at very high RF exposures, above
2.0 W/kg, is not recommended for the general patient
population. Such monitoring should be attempted on conscious
patients with good temperature reflex so they may warn the
operator of excessive heat at monitoring sites.
• All cables should be watched carefully during patient loading
and unloading to avoid entanglement with the patient table
mechanisms. Cables and the ECG module should not be
permitted to swing or move during scanning to avoid baseline
wander.
• The "T" wave may become excessively large or inverted with the
patient in the magnetic field. This effect is due to
electromagnetic flow induced voltage and may interfere with
QRS detection. Try other leads and/or electrode placements for
best results.
WARNING
! !
CAUTION
! !