BIOTRONIK ProMRI Evia HF Manual Tecnico página 14

Magnet application by patients
If patients are performing their own magnet application, the synchronous magnet
response has to have been programmed. Patients should also know the following:
• When may the magnet be used?
In cases of severe dizziness and indisposition.
• How long is the magnet placed on the pacemaker?
1 to 2 s.
• What happens when the magnet is applied?
The IEGM of the last 10 seconds is stored.
• What has to happen after magnet application?
The patient has to contact the physician for a follow-up.
Replacement Indications
Pacemaker operational status indications
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 Battery is in good condition; normal follow-up.
ERI Elective Replacement The replacement time has been reached. 
Indication The pacemaker must be replaced.
EOS End of Service End of service time with regular pacemaker activity.
ERI activation
ERI detection is automatically activated after the following events:
• Successful auto-initialization
• Storage for longer than 24 months
en • English
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
Change of the mode with ERI
From triple-chamber modes, the pacemaker switches to dual-chamber pacing. This
replacement depends on the programmed mode and is displayed on the programmer.
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
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(R); DOO(R); VDD(R); VDI(R); VVI(R); VVT(R); AAI(R); AAT(R); AOO(R)
• In the modes DDI(R) and DVI(R), only the VA interval is extended by 11%. This
reduces the pacing rate by 4.5 to 11% depending on the configured AV delay.
13