25 Implantation
Information on
magnet response
Applying a magnet or the programming head can result in an unphysiological
rhythm change and asynchronous pacing. The magnet response is set as follows in
the standard program of BIOTRONIK pacemakers:
• Asynchronous: for the duration of the magnet application – mode D00 (possibly
V00 / A00) without rate adaptation; magnet rate: 90 ppm
• Automatic: for 10 cycles – mode D00, subsequently mode DDD without rate
adaptation; magnet rate: 10 cycles with 90 ppm, subsequently set basic rate
• Synchronous: mode DDD without rate adaptation; magnet rate: set basic rate
Preventing conduction
of atrial tachycardia
to the ventricle
• If the function is not yet automatically set: activate Mode Switching for indicated
patients.
• Set the upper rate and the refractory periods to prevent abrupt ventricular rate
switching.
• Prefer Wenckebach response and avoid 2:1 behavior.
• Set all parameters so as to prevent constant changing between atrial and ven-
tricular-controlled modes.
If an ICD is implanted
at the same time,
do not permit unipolar pacing
If an ICD is implanted in addition to a pacemaker and a lead failure occurs, it is pos-
sible to switch to unipolar pacing after a pacemaker reset or using the automatic
lead check. The ICD could therefore falsely inhibit or trigger tachyarrhythmia ther-
apy activity.
• Unipolar leads are not permitted in this configuration.
Consider power consumption
and service time
The pacemaker permits programming of high pulse amplitudes with long pulse
widths at high rates to be able to adequately treat even rare diagnoses. In combina-
tion with low lead impedance, this results in a very high level of power consumption.
• When programming large parameter values, take into account that the battery
depletion indicator ERI will be activated very early because the service time of
the battery may be reduced to less than 1 year.
Note: See information pertaining to replacement indications for magnet behavior
at ERI.
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