User Manual Part 1

TACHYARRHYTHMIA DETECTION
VENTRICULAR DETECTION
3-11
Table 3-4. Onset/Stability rhythm discrimination available per zo ne (continued)
VT-1 Zone VT Zone VF Zone
2-zone Configuration (with Monitor Only zone)
b
None None
1-zone Con figuration
None
a. Polymorphic VT Discrimination is only available in the VT zone.
b. Rhythm discrimination is not available in the lowest zone of a multi-zone configuration if the z one is used as a M onitor Only
zone (no therapy programmed for that zone).
Reconfirmation/Committed Shock
Reconfirmation refers to the monitoring performed by the device during and
immediately following capacitor charging for a shock. When the Committed
Shock parameter is programmed to Off, the device is allowed to reconfirm that
a shock should be delivered.
Ventricular Redetection
Ventricular Redetection occurs following any:
• Ventricular therapy delivery
• Diverted therapy due to reconfirmation analysis (diverted-reconfirm)
• Manually diverted therapy
• Therapy not available at Detection Met
Redetection uses the same ventricular detection window process and
programmed tachycardia rate thresholds as initial detection to identify a
tachyarrhythmia.
The primary differences between initial detection and redetection are the
duration parameters used and the detection enhancements that are available:
• If v entricular shock therapy is delivered, the following will oc cur:
– The redetection duration time is determined by the value of the
Post-shock Duration parameter
– Detection enhancements (except for Vector Timing and Correlation)
are available during redetection
- DRAFT -