User Manual Part 1

4-8
TACHYA RRHYTHMIA THERAPY
VENTRICULAR THERAPY
2
1
4 5
3
Zone ATP1 ATP2 QUICK
CONVERT ATP
Shock 1 Shock 2 Remaining Shocks
VF
VT
VT-1
On
N/A
N/A
2 J
3 J
0.1 J
11 J
9 J
2 J
Burst Scan
Ramp Burst
max max max max max max
max max max max
max max max
ATP1 in the VT zone is delivered because
it is considered of equal strength to QUICK
CONVERT ATP therapy.
Figure 4-9. Therapy delivery progression, QUICK CONVERT ATP decelerates the rhythm, ATP1 and shock
delivered in the VT zo ne
1
2
3
Zone ATP1 ATP2 QUICK
CONVERT ATP
Shock 1 Shock 2 Remaining Shocks
VF
VT
VT-1
On
N/A
N/A
11 J
3 J
0.1 J
21 J
9 J
2 J
Burst Scan
Ramp Burst
max max max max max max
max max max max
max max max
When the rhythm accelerates to the VF zone, Shock
1 is delivered because QUICK CONVERT ATP is
only available as the first therapy in an episode.
Figure 4-10. T herap y delivery progression, ATP1 in VT zone accelerates t he rhythm, QUICK CONVERT ATP
isskippedinVFzone
Ventric ular Redetection after Ventricular Th erapy Delivery
After ventricular therapy delivery, the pulse generator uses redetection criteria
to evaluate the rhythm and determine whether more therapy is appropriate.
When redetection criteria are satisfi ed, the rules for therapy selection then
determine the type of therapy to deliver.
Ventric ular R edetection after Ventricular ATP Therapy
Ventricular Redetection after ventricular ATP therapy determines if an
arrhythmia has been terminated.
As a ventricular ATP scheme is delivered, the pulse generator monitors the
cardiac rate after each burst and uses ventricular d etection windows (loo king
- DRAFT -