Patent ID: 9604064
Date: 2017-03-28
CPC Classifications: A61N

Claim:
1. A method of cardiac pacing employing a plurality of left ventricular electrodes, comprising: a) pacing in a first fusion pacing configuration using a first one of the left ventricular electrodes and measuring activation times at other ones of the left ventricular electrodes and one or more right ventricular electrodes; b) pacing in a second fusion pacing configuration using a second one of the left ventricular electrodes and measuring activation times at other non-pacing ones of the left ventricular electrodes and one or more right ventricular electrodes; and c) employing weighted sums of the measured activation times in left and right ventricles during pacing to determine a fusion index (FI) and select one of the left ventricular electrodes for delivery of subsequent pacing pulses, the weighted sums employing each electrode's physical distance from the pacing electrode, wherein each sum being a weighted sum of the activation times measured at respective non-pacing left ventricular electrodes during a respective fusion pacing.