Patent ID: 7424324

Claim:
A system comprising: a detection module communicatively linked to a ventricular electrode, wherein the detection module detects a beginning of an intrinsic ventricular depolarization and an ending of the intrinsic ventricular depolarization; a processing module communicatively linked to the detection module, wherein the processing module computes an interval between the beginning of the intrinsic ventricular depolarization and the ending of the intrinsic ventricular depolarization, compares the interval to a threshold, and determines whether a patient is a responder to resynchronization therapy using the interval; and wherein the detection module and processing module are included in or coupled to a heart stimulation device that is electrically connected to the electrode, and wherein when the interval is greater than the threshold, the heart stimulation device sets a paced atrio-ventricular delay to substantially less than an intrinsic atrio-ventricular delay of the patient when the patient is determined to be a responder to resynchronization therapy.