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
