User Manual Part 1

3-14
TACHYARRHYTHMIA DETECTION
VENTRICULAR DETECTION
satisfied. The zone’s detection window will only become resatisfiedwhen8of
10 intervals are again classified as fast (Figure 3-3 on page 3-14).
630 600 600 380 370 390 380 370 600 370 350 370 490 500 500 500 500 370
S S S S F F F F F F F F S S S S S F
F
6 of 10 intervals are fast, VF window not satisfied.
8 of 10 intervals are fast, VF window is satisfied.
7 of 10 intervals are fast, VF window remains satisfied.
7 of 10 intervals are fast, VF window not satisfied.
6 of 10 intervals are fast, VF window remains satisfied.
5 of 10 intervals are fast, VF window is no longer satisfied.
6 of 10 intervals are fast, VF
window is not yet resatisfied
7 of 10 intervals are fast, VF
window is not yet resatisfied
8 of 10 intervals are fast, VF
window is resatisfied
VF
window
Intervals
in ms
VF Zone Rate = 150 min
-1
(bpm) = 400 ms
S = Slow F = Fast
One-zone configuration
Right
Ventricle
Figure 3 -3. Ventricular detection w in do w satisfied
Because Rate Threshold in the higher zones must be programmed at a value
greater than Rate Threshold in lower zones, an interval classified as fast
in a higher window would also be classi fied as fast in any lower windows
(Figure 3-4 on page 3-15).
- DRAFT -