Operation
Pacemaker Refractory Period Testing
2
2-25
fcf033.eps
Three hyphens (---) indicate that no pacer pulses have been received.
Definitions of the other abbreviations on the display are:
• PRP – Pulsed refractory period; the time (typically 20-500 ms)
after a pulse is delivered from the pacemaker, during which the
pacemaker does not detect cardiac activity.
• PPM – pacing rate at which the test was performed
• SRP – sensed refractory period; the period after the pacemaker
senses cardiac activity during which it does not detect further
cardiac activity.
6. Press the TEST softkey to start testing. The dashed lines flash, indicating
that the test is in progress and pulses are detected. When the refractory
period has been determined, the results are displayed.
Note
At slow rates, it may take one to three minutes to determine the
refractory tests. The test is quicker at higher pacing rates. The results
are automatically output via the RS232 port. Do not alter the pacing
rate during refractory measurements or incorrect data may be
recorded.
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