User Manual Part 1

4-16
TACHYA RRHYTHMIA THERAPY
ANTITACHYCARDIA PACING THERAPIES AND PARAMETERS
If subsequent bursts are required, the programmed Ramp Decrement will be
applied based on the calculated BCL of that subsequent burst (Figure 4-16 on
page 4-16).
Burst Cycle Length = 75%
Ramp Decrement (R-R Within Burst) = 10 ms
Scan Decrement (R-R Between Bursts) = 0 ms
C.I. Decrement = 0 ms
Minimum Interval = 265 ms
300
ms
290
ms
280
ms
270
ms
4-Cycle Average
= 400 ms
Ramp Ramp
4-Cycle Average
= 380 ms
Readapt 75%
285
ms
275
ms
265
ms
265
ms
Minimum interval reached;
subsequent interval is not
decremented.
Redetect
Figure 4-16. Adap tive Ramp Scheme, Co up ling Interval Decrement and Scan Decrement p rog rammed to 0
Scan Scheme
A Scan scheme is a burst in which the BCL of each burst in a scheme is
systematically shortened (decremented) between successive bursts.
YoucanprogramaScanschemebyprogrammingtheScanDecrementto
specify the BCL decrement to a value greater than 0 ms, while the Ramp
Decrement is programmed to 0 ms. The BCL of subsequent bursts is
determined by subtracting the Scan Decrement from the BCL of the previous
burst (Figure 4-17 on page 4-17).
- DRAFT -