Fluke SigmaPace 1000, Operator'S Manual, Page: 61 / 154

Transcutaneous Pacemaker Testing
Test Options
3
3-7
P R P
P R P
" S e ns ed" C ardia c T es t P u ls e
P a c i n g R a t e
I n t e r v a l
@ 8 0 B P M = 7 5 0 m S
P a c i n g R a t e
I n t e r v a l
R e s e t > 7 5 0 m S
C a r d i a c Te s t P u l s e
eyr003.eps
Figure 3-2. Paced Refractory Period
Sensed Refractory Period (SRP)
The Analyzer then generates a second simulated ECG signal immediately
trailing the first simulated ECG signal used to determine the PRP. See Figure
3-3. This coupling interval is slowly extended until the simulated ECG signal
falls outside the PRP. The signal is then sensed by the pacemaker, causing the
escape interval to reset. The result is a longer pacing pulse interval.