Patent ID: 7181283

Claim:
A method for controlling implantable medical device parameters, said method comprising: obtaining a left atrial pressure signal; indentifying at least one attribute of said left atrial pressure signal, said at least one attribute being indicative of cardiac performance; automatically adjusting at least one output parameter of an implantable medical device to enhance hemodynamic performance in response to said at least one attribute, said left atrial pressure signal comprising a v-wave characteristic, an a-wave characteristic, and a c-wave characteristic; determining a v-wave peak time corresponding to said v-wave characteristic, an a-wave peak time corresponding to said a-wave characteristic, and a c-wave peak time corresponding to said c-wave characteristic; and calculating a first time period (t va ) based upon said v-wave peak time and said a-wave peak time, and a second time period (t ac ) based upon said a-wave peak time and said c-wave peak time, said at least one attribute corresponding to a ratio of t va and t ac .