Pacing Modes And Parameters; Pacing Modes; Rate - BIOTRONIK Reocor S Manual Tecnico

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Mode S00
Mode SSI
Mode SST
High-frequency
pacing
WARNING!
WARNING!

Pacing Modes and Parameters

Pacing Modes

There are three pacing modes available: S00, SSI, SST as well
as high-frequency pacing (Burst).
For disturbances caused by electromagnetic interference
(EMI), after certain limits are exceeded Reocor S will switch
to operating mode S00 for the duration of the disturbance.
The pacemaker sends pulses with a constant rate. The pulses
are asynchronous, i.e. not synchronized with the intrinsic
heartbeats. This mode functions when connected to the
ventricle as V00 and to the atrium as A00.
The pacemaker inhibits pulses when intracardiac potentials
are sensed. It sends pulses if no event is sensed within one of
the intervals corresponding to the selected frequency.
This mode functions when connected to the ventricle as VVI
and when connected to the atrium as AAI.
The triggered pacing mode SST corresponds to the pacing
modes SSI with the following distinction: no pulse inhibition
takes place upon sensing of an event outside of the refractory
period, instead pulse delivery is carried out immediately in
the respective chamber.
The rate of the burst function can be selected with the control
dial (10) from 60 ppm to 1000 ppm. This function is activated
with two key buttons: First the Select burst key button (11)
must be pressed and then, within two seconds, the
Start burst key button (8) must be pressed. The pulse delivery
then lasts as long as the Start burst key button is pressed.
After a burst stimulation in the atrium, the ventricular blank-
ing interval can prevent sensing of intrinsic signals and lead
to asynchronous pacing in the ventricle.

Rate

The rate can be continuously adjusted from 30 ppm to
250 ppm with the Rate control dial (12). If a value greater than
180 ppm is set, the device will sound a warning signal for
two seconds.
Pacing the heart with rates higher than 180 ppm over a long
time period can cause severe hemodynamic complications.
Pacing with high rates should only be performed when con-
tinuous monitoring is ensured.