Patent ID: 8494631

Claim:
A medical device system, comprising: a plurality of electrodes for delivering cardiac pacing pulses to a patient's heart; a cardiac sensing module coupled to the plurality of electrodes; a cardiac pacing module coupled to the plurality of electrodes for generating cardiac pacing pulses; an acoustical sensor for obtaining heart sound signals; a processor configured to establish a plurality of conditions for acquiring heart sound signals, receive the heart sound signals during each of the plurality of established conditions, derive a plurality of heart sound signal parameters from the heart sound signals, and determine a heart sound response profile comprising a trend of each of the plurality of heart sound signal parameters with respect to the plurality of established conditions; and a memory storing a plurality of profile classification definitions, wherein the processor is further configured to determine a closest match between one of the plurality of profile classification definitions and the heart sound profile, and provide a classification of the heart sound profile according to the closest matching profile classification.