Patent ID: 7203541

Claim:
A cardiac monitoring method, comprising: deploying at least two cardiac wall motion sensors into operative communication with spaced-apart portions of myocardial tissue; receiving a signal from each of the at least two cardiac wall motion sensors; obtaining a sensor signal output segment for a predetermined sensing window for each of the at least two cardiac wall motion sensors; filtering the sensor signal output segment of each of the at least two cardiac wall motion sensors; locating an fiducial point for the filtered sensor signal output segments of each of the at least two cardiac wall motion sensors; comparing the relative temporal location of the initial fiducial points of the filtered sensor signals of each of the at least two cardiac wall motion sensors; and generating a metric of ventricular synchrony using the time difference between the relative temporal location of the initial fiducial points for each of the filtered sensor signal of the at least two cardiac wall motion sensors, wherein deploying one of the at least two cardiac wall motion sensors comprises deploying an accelerometer sensor.