Patent ID: 9554717
Date: 2017-01-31
CPC Classifications: A61B,A61N

Claim:
1. For use with an implantable system including a lead having at least two electrodes implantable in a left ventricular (LV) chamber, a method comprising: (a) using a plurality of different sensing vectors to obtain a plurality of different intracardiac electrograms (IEGMs) each of which is indicative of an evoked response at a corresponding different region of the LV chamber; (b) for each of the different IEGMs, determining one or more evoked response metrics indicative of a localized cardiac function at the corresponding different region of the LV chamber; and (c) monitoring a heart failure (HF) condition based on the localized cardiac function at the plurality of different regions of the LV chamber as determined based on the one or more evoked response metrics determined for each of the different IEGMs, wherein the monitoring the HF condition includes determining a uniformity of an electrical substrate of the LV chamber by comparing levels of the evoked response metrics determined for the plurality of different IEGMs to one another.