Patent ID: 7914452

Claim:
A system for applying electrical stimulation to a living body having a heart having boundary surfaces and a right atrium (RA), a left atrium (LA), a right ventricle (RV), a left ventricle (LV), and a coronary vein, the system comprising: one or more implantable ultrasound transducers adapted to sense one or more ultrasound signals indicative of one or more cardiac dimensions, the one or more implantable ultrasound transducers each including a transceiver adapted to transmit a signal and receive a reflected signal being the signal transmitted by the transceiver and reflected from one of the boundary surfaces; and an implantable medical device comprising: a stimulation output circuit to deliver the electrical stimulation; a cardiac size analyzer adapted to receive the one or more ultrasound signals and produce one or more cardiac size parameters using the one or more ultrasound signals, the one or more cardiac size parameters including one or more of: an infarct size parameter representative of an estimated size of an infarct region; a parameter indicative of change in the infarct size parameter; and a parameter indicative of rate of change in the infarct size parameter; and a stimulation controller coupled to the stimulation output circuit, the stimulation controller including: a stimulation delivery controller adapted to control the delivery of the electrical stimulation using stimulation parameters; and a stimulation adjustor adapted to adjust the stimulation parameters using the one or more cardiac size parameters.