Patent ID: 7751889

Claim:
An implantable cardiac stimulation device comprising: an implantable stimulation pulse generator adapted to generate therapeutic stimulation; at least one implantable lead defining at least one stimulation circuit and one sensing circuit adapted to sense at least one physiologic parameter indicative of a patient's physiological activity; and a controller in communication with the at least one lead said controller programmed to receive signals indicative of the patient's physiologic activity and with the stimulation pulse generator such that the controller can selectively induce delivery of the therapeutic stimulation and wherein the controller operates under a first programmed set of a plurality of variable operational parameters wherein the operational parameters define timing intervals under which the therapy is delivered and characteristics of the therapy delivered, and wherein the controller is further adapted to periodically evaluate signals indicative of the patient's cardiac activity for effectiveness of the therapy delivery in achieving improved synchrony between heart chambers as compared to a predetermined eucontractile performance for the patient, wherein the eucontractile performance is determined based on assessment of a plurality of patients each exhibiting similar physiology to the patient which indicates desired healthy activity at rest and at elevated metabolic levels for the patient and wherein the controller is further adapted to automatically self-reprogram the first set of operational parameters to a second set of operational parameters to improve effectiveness of the timing intervals of the therapy delivery to obtain improved synchrony between heart chambers as compared to the predetermined eucontractile performance for the patient.