User's Manual

Pacing Types – Modes

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— Recording of statistics

— Mode switching

— Automatic lead check

— AV hysteresis and rate hysteresis

— Rate adaptation

— Overdrive

— PMT protection

— VES lock-in termination

— Active capture control (ACC)

— Rate fading

Automatic Magnet Effect

During the first 10 cycles after magnet application the pacemaker

paces asynchronously at 90 ppm (at 80 ppm upon reaching the

replacement indication). Thereafter, synchronous pacing at the

programmed basic rate occurs (or at the night rate, if one has been

programmed). During asynchronous pacing, the AV delay is reduced to

100 ms if a longer interval was programmed. This avoids ventricular

fusion beats when AV conduction is intact and makes it easier to detect

the effectiveness or ineffectiveness of ventricular pacing.

Asynchronous Magnet Effect

The sensing function of the pacemaker is deactivated for the duration

of the external magnet application. During this time, the pacemaker

paces asynchronously at 90 ppm (at 80 ppm upon reaching the

replacement indication).

Synchronous Magnet Effect

The sensing and pacing behavior of the pacemaker remains unchanged

when a magnet is placed over the pacemaker. The basic rate also

remains intact (except after the replacement indication has been

reached). The synchronous magnet effect is only important for the

follow-up and if you want IEGM recordings to be triggered by the

patient. This guarantees that the sensing function remains enabled

when the programming wand or magnet is applied, and that the

replacement indication can be monitored.