. Author manuscript; available in PMC: 2010 Jul 24.

Published in final edited form as: Pacing Clin Electrophysiol. 2009 Oct 10;33(1):54–63. doi: 10.1111/j.1540-8159.2009.02581.x

Table II.

Required Device Programming

Parameter	Required Setting
^* Pacing mode	DDD or DDDR
^# LRL (lower rate limit)	60
ATR (atrial tachy response)	ON at 170 beats/min
Rate hysteresis	OFF
Dynamic atrioventricular (AV) delay	OFF
^† AV delay	Fixed arm: 120 ms SmartDelay arm: per algorithm Echocardiogram arm: per iterative method
^‡ Left ventricular (LV) offset	Fixed arm: 0 SmartDelay arm: 0 Echocardiogram arm: recommend 0

Set after the baseline echocardiogram (device programmed to VVI-40-RV) at the post-implant.

^†

Only patients randomized to the SmartDelay arm will have their AV delay settings re-optimized at the 3-month follow-up visit.

^‡

For the echocardiogram arm only, after the AV delay is determined, an LV offset other than 0 may be programmed.