User Manual

Lumax Technical Manual 107
Figure 11. Scan Hysteresis
Scan hysteresis has been incorporated to promote intrinsic
cardiac rhythm and may reduce pulse generator energy
consumption.
2.9.5 Dynamic AV Delay
DR and HF versions only
The AV Delay defines the interval between an atrial paced or
sensed event and the ventricular pacing pulse. If the pulse
generator is programmed to a dual chamber sensing mode, an
intrinsic ventricular event falling within the AV Delay will inhibit the
ventricular pacing pulse. If not contraindicated, a longer AV Delay
can be selected to preserve intrinsic AV conduction.
Dynamic AV Delay is where the AV Delay is varied depending on
the spontaneous atrial rate. Dynamic AV Delay provides a linear
change of AV Delays depending on current rate at preset lower
and upper AV Delay values.
In addition to selecting the preset values (Low, Medium, and
High) with the Dynamic AV Delay window, the Dynamic
AV Delays may be programmed individually (Individual) for each
rate zone or to a fixed AV Delay (Fixed).