Patent ID: 9675805
Date: 2017-06-13
CPC Classifications: A61N

Claim:
1. A method for selecting a left ventricular (LV) multi-electrode (LVME) pacing site for an implantable medical device equipped for cardiac stimulus pacing using a multi-pole LV lead, the method comprising: sensing LV activation events at multiple LV sensing sites, where the activation events are generated in response to intrinsic ventricular events or delivery of a pacing pulse; measuring arrival times of the LV activation events for the corresponding LV sensing sites, wherein the arrival times each correspond to a conduction time from the intrinsic ventricular events or the delivery of the pacing pulse until sensing of the corresponding LV activation event; calculating site-to-site (STS) relative delays as differences between the arrival times associated with adjacent LV sensing sites, the STS relative delays representing STS arrival delays for corresponding combinations of the adjacent LV sensing sites; calculating a degree of non-uniformity based on the STS relative delays; identifying an LV electrode combination associated with at least one of the STS relative delays that satisfies selection criteria, the LV electrode combination corresponding to a target tissue region exhibiting a select degree of non-uniformity; and designating the LV electrode combination as a first left ventricular electrode combination (LVEC) pacing site from which to deliver LV pacing pulses; and delivering a LV pacing pulse from the first LVEC pacing site.