
Operating the pacer
METRAX GmbH
DefiMonitor XD 21324 / GB / K05
75 / 116
Note
The operating mode cannot be changed during pacing. For example, in order to
change from FIX to DEMAND mode, the Pacer must be stopped first.
If the Pacer is started up again without the operating mode having been changed, the last set
stimulation values are applied. If the Pacer operating mode is changed or if the Pacer is
switched off and then back on, the basic setting is activated again.
WARNING
If for some reason, DEMAND pacing is not possible, the FIX mode can be
used. Thereby, it is necessary to synchronise the stimulation frequency to the
present status. This should be carried out by a doctor.
Note
Too slow and not effective stimulation in FIX mode can lead to ventricular fibrillation
if the pacemaker impulse is released during heart's vulnerable phase.
12.3
Setting the stimulation rate
Depending on the Pacer operating mode, various stimulation rates (number of Pacer pulses
per minute) are available:
FIX, DEMAND
30 ... 180 1/min (beats power minute)
OVERDRIVE
30 ... 250 1/min
The following values are preset when the respective modes are activated:
FIX, DEMAND
70 1/min
OVERDRIVE
200 1/min
To select a different stimulation rate, this value can be changed by pressing the Rate
Pulse/min
button.
Each time the button is pressed, the value is increased or decreased in steps of 5 (each of 5
1/min). The stimulation rate can also be changed during pacing.
The stimulation rate should only be changed if this is absolutely necessary.
WARNING
The ECG should be monitored closely when the stimulation rate is
changed to observe possible reactions of the patient to the new
stimulation parameters.