8.2.2.8 Evaluating the ventricular rhythm after therapy
After delivering a therapy, the device evaluates the ventricular rhythm to determine if the
episode is continuing.
Redetection – The device redetects the ventricular tachyarrhythmia if the programmed VF
Beats to Redetect value or the programmed VT Beats to Redetect value is reached. The
device then delivers the next programmed therapy sequence for the redetected ventricular
tachyarrhythmia and again evaluates the rhythm for redetection or termination.
Notes:
●
You can expedite redetection by programming the VF and VT Beats to Redetect values
to values that are lower than the VF and VT Initial Beats to Detect value.
●
The SVT discrimination features are not applied during redetection, with the exception
of the TWave Discrimination feature and the Stability feature, which are always applied
after 3 consecutive VT events.
Figure 151. Redetecting a VT episode after therapy
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1 A VT episode is detected, and the device delivers a Burst ATP therapy.
2 After the Burst ATP therapy, the device continues to identify VT events.
3 When the number of VT events reaches the programmed VT Beats to Redetect value, the device
redetects the VT.
Medtronic
PROTECTA™ XT DR D314DRG
312
Clinician Manual
Summary of Contents for PROTECTA XT DR D314DRG
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