User's Manual

4. WARNINGS AND PRECAUTIONS
4. WARNINGS AND PRECAUTIONS
The patient should be warned of the potential risks of defibrillator malfunction if he is
exposed to external magnetic, electrical, or electromagnetic signals.
These potential interference sources may cause conversion to inhibited mode (because of
noise detection), erratic delivery of VT or VF therapies, nominal programming, or much more
rarely, irreversible damage to the device’s circuits.
The main sources of high magnitude disturbance are: powerful radiofrequency equipment
(radar), industrial motors and transformers, induction furnaces, resistance, arc-welding
equipment and high power loudspeakers.
Electrical Isolation:
Do not permit the patient to contact grounded equipment that could produce hazardous
leakage current. Ensuing arrhythmia induction could result in the patient’s death.
Antitheft gates:
Since antitheft devices at the entrance to stores are not subject to any safety standards, it is
advisable to spend as little time as possible in their vicinity.
Airport detection systems:
Since airport detection systems are not subject to any safety standards, it is advisable to
spend as little time as possible in their vicinity.
Work environment:
The patient's work environment may be an important source of disturbance. In that case,
specific recommendations may be required.
High voltage power transmission lines:
High voltage power transmission lines may generate enough disturbance to interfere with
defibrillator operation if approached too closely.
Communication equipment:
Communication equipment such as microwave transmitters, linear power amplifiers, or high-
power amateur transmitters may generate enough disturbance to interfere with defibrillator
operation if approached too closely.
Home appliances:
Home appliances that are in good working order and properly grounded do not usually
produce enough disturbance to interfere with defibrillator operation. However, there are
reports of device interferences caused by electric hand tools or electric razors used directly
over the device implant site. Patient should also avoid using induction ovens and cookers.
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SORIN – PLATINIUM DR – U460A
CAUTION: Do not tap sharply on the ICD can after implant, because the ICD's sensing
circuits can detect this as P-waves or R-waves, and such oversensing could result in
inappropriate pacing, inhibition, or therapy. Normal activities after implant do not result in
such oversensing.