Specifications

7 x 9 inches (178 mm x 229 mm)
Medtronic Confidential
Refer to the “Reference man.” category in doc#163256 for Printing
Instructions.
196407001 Rev A
a) Magnetic and radio frequency (RF) fields produced by MRI may
adversely affect the operation of the pacemaker, including total
inhibition of pacing output.
b) Magnetic fields may activate magnet mode operation and cause
asynchronous pacing.
Limited published studies
1
on the effects of MRI on pacing have observed
increased ventricular pacing beyond the rate limit. Pacemaker patients who
are treated with MRI should be closely monitored and programmed
parameters should be verified upon cessation of MRI.
Lithotripsy
Permanent damage to the pacemaker may occur if the device is at the focal
point of the lithotripsy beam. Since this situation is easily avoided,
lithotripsy may be used safely with Prodigy pacemakers provided:
■
the pacemaker is programmed to a single chamber nonrate responsive
mode (VVI/AAI or VOO/AOO) prior to treatment; and
■
the pacemaker is at least 1 to 2 inches (2.5 to 5 cm) away from the
focal point of the lithotripsy beam.
Diathermy
Do not use diathermy directly over the pacemaker implant site because of
the heating effects of internal components and possible damage to the
pacemaker.
External Defibrillation
Place the defibrillation paddles at least 5 inches (13 cm) from the
pacemaker and confirm normal operation after defibrillation. Defibrillatory
discharges may result in temporary and/or permanent myocardial damage
at the electrode-tissue interface, as well as temporary and/or permanent
elevated pacing thresholds. The pacemaker may be damaged by
defibrillatory discharges if the paddles are placed over the pacemaker.
1
Holmes, Hayes, Gray, et al. The effects of magnetic resonance imaging on implantable pulse
generators. PACE. 1986; 9 (3): 360-370.
Hospital, Medical, Home or Job Environment Interference G-3
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