User Manual Part 1

TACHYARRHYTHMIA DETECTION
VENTRICULAR DETECTION
3-7
Ventricular D etection Enhancement Suites
One of the following ventricular detection enhancement suites may be
programmed to provide specificity beyond Rate and Duration (Table 3-3 on
page 3-7):
•RhythmID
• Onset/Stability
Detection enhancement suites are not available in the VF zone.
Table 3-3. Detection enhancement s u ites available per zone
VT-1 Zone VT Zone VF Zone
Rhythm ID Rhythm ID
3-zone configuration
a
Onset/Stability Onset/Stability
c
None
Rhythm ID
3-zone configuration (with M onitor O nly
zone)
b
None
Onset/Stability
None
Rhythm ID
2-zone configuration
Onset/Stability
None
2-zone configuration (with Monitor Only zone)
b
None None
1-zone configuration
None
a. If the detection enhancement suite is enabled in a 3-zone configuration, it applies to both the VT-1 and VT zones. Detection
enhancement suites cannot be independently enabled for each zone.
b. Detection enhancement suites are not available in t he lowest zone of a multi-zone configuration when the zone is used as a
Monitor Only zone (no therapy programmed for that zone).
c. Shock if unstable is the only Onset/Stability detection enhancement available in the VT z one of a 3-zone configuration (applies
only to 3-zone configuration without a Monitor Only zone).
NOTE: There is no clinical data to suggest that one detection enhancement
suite is s uperior to the other for any given patient indication. Therefore,
individual programming and evaluation of detection enhancement specificity
is recommended.
Rhythm ID
Rhythm ID uses Vector Timing and Correlation analysis in addition to atrial and
ventricular interval analysis to determine if a patient’s rhythm should be treated
(VT) or if therapy should be inhibited (SVT).
With Rhythm ID, the pulse generator performs a vector timing and correlation
analysis using the shock EGM and rate EGM. Based on this data, it saves a
reference template of the patient’s normal sinus rhythm.
- DRAFT -