Patent ID: 7877140

Claim:
An implantable device for delivering cardiac therapy to a patient, comprising: one or more pulse generators for delivering pacing pulses to one or more ventricular sites; a controller for controlling the delivery of pacing pulses to one or more ventricular sites during a cardiac cycle in accordance with a programmed pacing algorithm; wherein the controller is programmed to deliver pre-excitation pacing which pre-excites a region of the ventricular myocardium so as to mechanically unload a region of the ventricular myocardium during systole; a pressure sensor for acquiring a cardiovascular pressure measurement; and, wherein the controller is programmed to compute a cardiac function assessment based upon the pressure measurement, monitor cardiac function while delivering pre-excitation pacing by comparing the cardiac function assessment to a specified threshold, and, if the cardiac function assessment is less than the specified threshold to indicate worsened cardiac function, decrease the amount of pre-excitation pacing delivered.