User Manual

Lumax Technical Manual 93
S1-S2 Interval - The S1-S2 programmable coupling interval
occurs between the Burst sequence and the extra stimuli (PES). It
defines the interval between the first stimulus (S1) and the extra
stimuli (S2).
Scan Decrement - The Scan decrement continuously reduces
the starting pulse intervals of each Burst or Scan.
Minimum ATP Interval – For the Lumax 300/340 & 500/540
models, the programmed minimum interval prevents ATPs from
being given with stimulation values less than the minimum
interval. When the ATP interval reaches the value of the minimum
interval with the S1 decrement or scan decrement, it then
assumes this value and remains constant. For the Lumax
600/640 & 700/740 models, the minimum ATP interval is 200 ms
fixed.
2.8.2.1 ATP Help
ATP help is a useful tool to assist
the physician in choosing and
confirming appropriate ATP programming. The “ATP Help” button
is displayed in each ATP therapy option. When the ATP help
button is pressed, a histogram of the chosen therapy scheme is
shown. The histogram displays the intervals for the programmed
ATP scheme. When rate adaptive intervals are programmed, the
displayed intervals are based on the programmed R-R average.
2.8.2.2 ATP Optimization
In
order to optimize future therapies, the ICD will store the
parameter configuration of the last successful ATP attempt in
each the VT1 and VT2 classes. The last successful stored ATP
attempt is then used as the starting point for the next detected
episode of the same arrhythmia class. If the stored parameter
configuration is not successful, it is deleted from the ATP
optimization memory of the respective arrhythmia class and
subsequent therapy sequences will begin with ATP1 for the next
detected episode.
ATP Optimization is programmable ON or OFF for all ATP
therapies and VT zones with one parameter.