| CPC A61N 1/3682 (2013.01) [A61N 1/0587 (2013.01); A61N 1/36843 (2017.08)] | 20 Claims |
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1. A system comprising:
an implantable medical device (IMD) having a header that includes an atrial header port, and at least one ventricular (V) header port;
a first lead having a first electrode configured to be located proximate to an atrial (A) site, the first lead having a proximal end with a first lead terminal connected to the atrial header port; and
a second lead having a second electrode configured to be located proximate to at least one of a left bundle branch (LBB) site, a right bundle branch (RBB) site or a HIS bundle, the second lead having a proximal end with a second lead terminal connected to the at least one ventricular header port,
memory configured to store program instructions;
one or more processors that, when configured to execute the program instructions:
obtain a collection of QRS characteristics of interest (COI) and corresponding candidate AV delays, each of the candidate AV delays based on an AV interval and based on a corresponding bundle branch adjustment (BBA) value,
wherein the AV interval corresponding to an interval between i) an atrial paced (Ap) event or an atrial sensed (As) event, paced or sensed at the first electrode, and ii) a sensed ventricular (Vs) event sensed at the second electrode,
wherein each of the BBA values represents an adjustment to the AV interval to account for sensing the Vs event at the second electrode which is located proximate to at least one of the LBB site or the HIS bundle but connected to the V header port;
select one of the candidate AV delays, that corresponds to a select one of the QRS COIs, as a BBA AV delay; and
manage a pacing therapy, utilized by the IMD, based on the BBA AV delay.
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