Patent ID: 7941217

Claim:
A method of determining an advance atrio-ventricular pacing interval (AV advance or PV advance) for use in place of an AV/PV interval for pacing a ventricle of a heart with a slower atrio-ventricular conduction relative to a ventricle with a faster atrio-ventricular conduction, said method comprising: providing an optimal interventricular interval (VVOpt); extending the AV/PV interval and while the AV/PV interval is extended, determining an atrio-ventricular conduction delay (AR or PR) for the ventricle having faster atrio-ventricular conduction, wherein the delay is a measure of time between an atrial event, either paced or intrinsic, and an intrinsic event in the ventricle having faster atrio-ventricular conduction; shortening the AV/PV interval and while the AV/PV interval is shortened, determining an interventricular conduction delay (IVCD), wherein the delay is a measure of time between a paced event in the ventricle having slower atrio-ventricular conduction and an intrinsic event in the ventricle having faster atrio-ventricular conduction; and determining an advance atrio-ventricular pacing interval (AV advance or PV advance), for use in pacing the ventricle having slower atrio-ventricular conduction, based at least in part on the optimal interventricular interval (VVOpt) and the interventricular conduction delay (IVCD).