BIOTRONIK Evia DR, Technical Manual

Page: 158 / 183

150 Evia Technical Manual
Table 33: Common Reasons to Explant a Pulse Generator
Source Cause Possible Effect
Battery Premature
depletion due to
high
programmed
output or other
cause(s)
resulting in
excessive
battery current
drain.
Output voltage decrease;
rate decrease; loss of
capture; increased pulse
width; inability to
program/interrogate;
sensing difficulty.
Circuitry Electrical
parameter
changes due to
shorts, opens, or
component
parametric drift
Electromagnetic
Interference
(EMI) from large
power tools,
industrial
equipment,
electrocautery,
defibrillation,
radiation
therapy, RF
ablation therapy,
etc.
No output; rate increase,
rate decrease; reversion to
asynchronous mode; loss of
capture and/or sensing
Permanent or temporary loss
of output; output inhibition;
reversion to asynchronous
mode with rate change or
instability; pacing
synchronized to interference;
reversion to "Elective
Replacement" or electrical
reset parameters; inability to
program/ interrogate; other
damage to circuit
components resulting in
permanent or temporary
parameter changes.
Connector,
Setscrew,
etc. Poor connection,
intrusion of body
fluid. Excessive current drain;
early battery depletion;
intermittent or continuous
loss of capture and/ or
sensing.