User's Manual

130
Replacement Indication
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Replacement Indication
The length of the period from beginning of service (BOS) until
replacement indication (ERI) is reached depends on several factors.
These include battery capacity, lead impedance, pacing program,
pacing to inhibition ratio, and the properties of the pacemaker circuit.
Expected Time Until ERI
In the course of the follow-up, the pacemaker displays the expected
value up until ERI, based on the permanent program. This value is
derived from the measured energy consumption of the battery. If
program parameters are modified, the remaining time until ERI for the
edited program is also displayed on the program screen. If the
remaining time until ERI falls under six months, an appropriate
message is displayed.
BOS "Beginning of
Service"
Battery is in good condition; normal follow-up.
ERI "Elective
Replacement
Indication"
The replacement time has been reached. The
pacemaker must be replaced.
EOS "End of
Service"
End of service time with regular pacemaking activity.
Table 10: Operating status indications of the pacemaker
Elective Replacement Indicator (ERI)
The pacemaker indicates the elective replacement indication with a
defined drop in both the programmed basic rate and the magnet rate
(see Table 11).