Patent ID: 8509891

Claim:
An implantable cardiac rhythm management device, comprising: sensing amplifiers for incorporating into atrial, right ventricular, and left ventricular sensing channels; one or more pulse generators for incorporating into right and left ventricular pacing channels; a controller for controlling the output of pacing pulses and receiving signals from the sensing amplifiers, wherein the controller is programmed to deliver a left ventricular pace and a right ventricular pace separated by a programmed biventricular offset interval in accordance with a demand pacing mode; wherein the controller is programmed to generate signals from which the delay between right ventricular and left ventricular activation during an intrinsic beat, referred to as the Δ RL interval, may be measured; and, wherein the controller is programmed to compute an optimum biventricular offset interval in accordance with a formula which expresses the optimum biventricular offset interval as a function of the measured Δ RL interval.