Patent ID: 8538519

Claim:
A system for configuring cardiac resynchronization pacing, comprising: a scanning device for detecting mechanical contraction of a first ventricular region and a second ventricular region during non-paced ventricular beat; a processing device interfaced to the scanning device, wherein the processing device is configured to compute a mechanical delay (MD) as the difference between the times at which the first and second ventricular regions mechanically contract during the non-paced ventricular beat and determine which of the regions is the earlier contracting region and the later contracting region; sensing channels for detecting electrical activity in an atrium and the later contracting ventricular region, and wherein the processing device is further configured to measure an intrinsic atrio-ventricular delay (IAVD) as the time between an atrial sense or pace and intrinsic electrical activation of the later contracting ventricular region; and, wherein the processing device is further configured to compute an atrio-ventricular delay interval (AVD) for delivering cardiac resynchronization pacing to the later contracting ventricular region in order to pre-excite that region as: AVD=IAVD−MD.