User Manual Part 1

3-24
TACHYARRHYTHMIA DETECTION
VENTRICULAR DETECTION
Table 3-7. Enhancement parameters available with detection enhancements (continued)
Rhythm ID
Onset/Stability
Enhancement Parameter
Initial
Post-Shock
Initial
Post-Shock
Onset
–– ––
X
––
SRD
g
XXXX
a. This enhancement is not individually programmable.
b. When Rhythm ID is selected, this enhancement is automatically enabled when Atrial Tachyarrhythmia Discrimination is
programmed to On. However, it is not available in single chamber devices or when the Atrial Tachyarrhythmia Discrimination is
programmed to Off in dual chamber devices.
c. This enhancement is not individually programmable when Rhythm ID is enabled.
d. When R hythm ID is selected, this parameter uses the same value for both initial and post-shock detection. It cannot be
independently enabled or disabled for post-shock detection.
e. When Onset/Stability is selected, this parameter can be enabled and disabled independently for post-shock detection. If enabled,
it uses the same value as the initial detection.
f. When Rhythm ID is enabled and Atrial Tachyarrhythmia Discrimination is programmed to O n in dual chamber devices, this
enhancement uses the same value for both initial and post-shock detection. In single chamber devices, or when Atrial
Tachyarrhythmia Discrimination is programmed to O ff, this enhancement is automatically disabled for Initial Detection, but is still
enabled for post-shock detection.
g. SRD is available when detection enhancements, which inhibit therapy, are programmed.
Some of these detection enhancement parameters are also independently
programmable as post-shock parameters (Table 3-7 on page 3-23).
The individual detection enhancement parameters that are available depend
on the number of tac hy zones that are programmed: 3, 2, or 1 (Table 3-8 on
page 3-24).
Table 3-8. Individual Ventricular Detectio n Enhancem ents available in multizone configurations
VT-1 Zone VT Zo ne VF Zone
Vector Timing and
Correlation
Vector Timing and
Correlation
a
V Rate > A Rate V Rate > A Rate
a
AFib Ra te Threshold AFib Rate Threshold
a
Stability to Inhibit Stability (to Inhibit)
a
Onset Shock if Unstable
3-zone configuration
SRD SRD
a
––
- DRAFT -