Table des Matières
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387158--G_GA_Lumax540_mul.book Page 12 Friday, February 1, 2013 5:38 PM
Possible Technical Complications
• Device component failures
• Battery depletion
• Lead dislocation
• Lead fracture
• Insulation defect
W CAUTION
Technical failures due to damaged leads
Switch the automatic impedance measurement function on to detect lead errors.
Impedance values that indicate a loss of lead integrity are documented in the event
list.
Possible Interference
Possible impairments due to EMI
All devices (PM/ICD) are susceptible to interference. The signals generated by sources
of interference could be interpreted as heart activity by the device, and/or could disturb
measurements required for adapting the rate of the device:
• Depending on the pacing mode and the type of interference, these sources of inter-
ference may lead to pacemaker pulse inhibition or triggering, an increase in the
sensor-dependent pacing rate, or a fixed-rate pulse delivery.
• Under unfavorable conditions, for example during diagnostic or therapeutic proce-
dures, the interference sources may induce such a high level of energy into the
artificial pacing system that the device and/or cardiac tissue around the lead tip is
damaged.
• BIOTRONIK devices have been designed so that their susceptibility to EMI is mini-
mized.
• However, due to the variety and intensity of EMI, absolute safety is not possible. It is
generally assumed that EMI produces only minor symptoms, if any, in patients.
Note: Indicate the possibility of interference to your patient if this is expected to have
a clinically relevant impact. Protect the device against the interference itself or its
effect by means of appropriate programming.
All manuals and user guides at all-guides.com
Static magnetic fields
Above a flux density of 1.8 mT, the Reed contact in the ICD closes; the ICD therapy is
then deactivated. If the magnetic field decreases to below 1 mT, the Reed contact opens
and the ICD therapy is active again.
Possible sources of interference
Interference can be caused by:
• Household appliances
• Safety locks or anti-theft installations
• Strong electromagnetic fields
• Cellular phones and transmitters (CardioMessenger)
— Patients are advised to hold cellular phones to the ear opposite the side on
— Cellular phones and transmitters emit signals when in stand-by mode, i.e.
— Electromagnetic interference only has a temporary effect. Implanted devices
Pacing Modes
Lumax 540 family
The following pacing modes are available:
Device type
DR-T;
HF-T
12
which the device is implanted. Furthermore the cellular phone or transmitter
should be held at least 15 cm away.
when not in use. Therefore these devices should not be carried in a breast
pocket or within a radius of 15 cm around the implanted device.
function again properly when the cellular phone or transmitter is moved away.
Technical Data
Bradycardia Therapy Parameters
Pacing modes
DDD, DDDR,
DDI, DDIR,
VDD, VDDR,
VDI, VDIR,
VVI, VVIR,
AAI, AAIR,
OFF
Standard
DDD
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