User Manual Part 1

TACHYARRHYTHMIA THERAPY
VENTRICULAR SHOCK THERAPY AND PARAMETERS
4-21
In the event that QUICK CONVERT ATP was unsuccessful in c onverting the
rhythm and shock therapy is required, the feature’s algorithm minimizes the
delay to begin charging. QUICK CONVERT ATP is not applied to any rhythm
above a maximum rate of 250 bpm.
VENTRICULAR SHOCK THERAPY AND PARAMETERS
The pulse generator delivers shocks synchronous to a sensed event. The
shock vector, energy level, and polarity of the shocks are programmable.
Ventricular Shock Vector
The programmed Ventricular Shock Vector indicates the vector of energy
delivery for ventricular shock therapy.
The following programmable configuration s are available:
• RV Coil to RA Coil and Can––this vector is also known as the V-TRIAD
vector. It uses the me tallic housing of the pulse generator as an active
electrode (“hot can”) combined with the ENDOTAK two-electrode
defibrillation lead. Energy is se nt via a dual-curre nt p athway from the distal
shocking electrode to the proximal electrode and to the pulse generator
case.
• RV Coil to Can––this vector us es the m etallic housing of the pulse
generator as an active electrode (“hot can”). Energy is sent from the distal
shocking electrode to the pulse generator case. This configuration should
be selected when using a single-coil lead.
• RV Coil to RA Coil––this vector removes the pulse generator case as
an active electrode and is also known as a “cold can” vector. Energy is
sent from the distal shocking electrode to the proximal electrode. This
vector should never be us ed with a single-coil lead, as a shock will not
be delivered .
Ventricular Shock Energy
Ventricular shock energy determines the strength of shock therapy delivered
by the pulse generator.
Shock output remains constant over the lifetime of the pulse generator,
regardless of changes in lead impedance or battery voltage. The constant
- DRAFT -