User Manual

Table Of Contents
24
Implantation
Replacement Indications
Replacement Indications
Possible charging status
The time span from the beginning of service (BOS) to elective replacement
indication (ERI) is determined by, among others, the following:
Battery capacity
Lead impedance
Pacing program
Pacing to inhibition ratio
Pacemaker circuit properties
The following are the defined pacemaker operational statuses:
BOS: Beginning of Service: > 90%
ERI: Elective Replacement Indication (i.e., RRT: Recommended Replacement
Time)
EOS: End of Service
ERI activation
ERI detection is automatically activated after the following events:
Successful auto-initialization
ERI display
ERI is displayed as follows:
On the programmer after interrogation of the pacemaker
By a defined decrease in the basic rate as well as the magnet rate
Rate decrease
The decrease of basic rate and magnet rate is defined as follows:
In the following modes, the pacing rate decreases by 11%:
DDD(R); DDT; D00(R); VDD(R); VDI(R); VVI(R); VVT; AAI(R); AAT; A00(R)
In the modes DDI(R) and DVI(R), only the VA interval is extended by 11%. This
reduces the pacing rate by up
to 11%, depending on the configured AV delay.
Change of the mode with ERI
This change depends on the mode which is set. It is displayed on the programmer.
Single-chamber modes: VVI
Dual-chamber modes: VDD
Triple-chamber modes: Dual-chamber pacing, one biventricular setting is kept
Deactivated functions with ERI
The following functions are deactivated:
Atrial pacing
Night program
Rate adaptation
Atrial and ventricular capture control
Rate fading
Atrial overdrive pacing
IEGM recordings
Statistics
Home Monitoring
Rate hysteresis
Ventricular pacing suppression