Patent ID: 8121685

Claim:
A cardiac rhythm management system, comprising: a plurality of sense amplifiers configured to sense cardiac electrical activity; a plurality of pulse generators configured to deliver pacing pulses; and a controller for controlling delivery of the pacing pulses, the controller programmed to: control delivery of ventricular pacing using a programmable atrio-ventricular delay (AVD) interval in accordance with an atrial tracking or AV sequential pacing mode; determine a present atrial rate; vary the AVD interval by setting the AVD interval to an optimum value stored in a table, the optimal value associated with the present atrial rate; measure an intrinsic conduction parameter; compute an optimal value for the AVD interval as a linear function of the measured intrinsic conduction parameter; and initialize or update the table by storing the computed optimal value and an associated atrial rate in the table, the associated atrial rate corresponding to the present atrial rate.