METHOD AND SYSTEM FOR IMPROVED ESTIMATION OF TIME OF LEFT VENTRICULAR PACING WITH RESPECT TO INTRINSIC RIGHT VENTRICULAR ACTIVATION IN CARDIAC RESYNCHRONIZATION THERAPY

摘要

A method and system of cardiac pacing is disclosed. A baseline rhythm is determined. The baseline rhythm includes a baseline atrial event and a baseline right ventricular RV event from an implanted cardiac lead or a leadless device, a pre-excitation interval determined from the baseline atrial event and the baseline RV event, and a plurality of activation times determined from a plurality of body-surface electrodes. A determination is made as to whether a time interval measured from an atrial event to a RV event is disparate from another time interval measured from the atrial event to an earliest RV activation time of the plurality of activation times. A correction factor is applied to the pre-excitation interval to obtain a corrected pre-excitation interval in response to determining the RV event is disparate from the earliest RV activation time. The processor is configured to signal the pulse generator to deliver electrical stimuli to a left ventricle (LV) using the corrected pre-excitation interval before RV sensing time.

主权项

1. A computer-implemented method of cardiac pacing comprising:
a) determining a baseline rhythm, the baseline rhythm includes a baseline atrial event and a baseline right ventricular (RV) event from an implanted cardiac lead or a leadless device, a pre-excitation interval determined from the baseline atrial event and the baseline RV event, and a plurality of activation times determined from the plurality of body-surface electrodes; b) determining an offset, the offset defined as difference between the intrinsic rhythm activation time (T2) of an electrode (T2) an earliest time of RV activation (T1) in intrinsic rhythm; and c) applying a correction factor to the pre-excitation interval for LV only pacing based on the offset T2-T1; and d) configuring the processor to signal the pulse generator to deliver electrical stimuli to a left ventricle (LV) using the corrected pre-excitation interval before the RV sensing time.