Determining cardiac pacing capture effectiveness of an implantable medical device

A cardiac rhythm management system, comprising:

• at least one sensing component configured to obtain a heart sound signal, a plurality of indications of a plurality of cardiac responses to a stimulation therapy, and temporal information corresponding to the heart sound signal and the cardiac responses;
• and
• at least one processor configured to:
• receive the heart sound signal, the plurality of indications of the plurality of cardiac responses, and the temporal information;
• and
• classify each of the plurality of cardiac responses into one of a plurality of cardiac response classes to generate a plurality of classified cardiac responses;
• determine a correlation, based on the temporal information, between the heart sound signal and the plurality of classified cardiac responses;
• cause a display device to present a representation of the correlation;
• and
• generate a therapy change recommendation that is different for different cardiac response classes of the plurality of cardiac response classes.

A method of evaluating an effectiveness of a pacing therapy, the method comprising:

• obtaining a first physiological parameter signal, an indication of a cardiac response to a stimulation therapy, and temporal information corresponding to the first physiological parameter signal and the cardiac response, wherein the first physiological parameter comprises at least one of a heart rate, a respiration rate, a blood pressure, a posture, an S1 heart sound, and an S2 heart sound;
• obtaining a second physiological parameter signal;
• classifying the cardiac response into a first cardiac response class to generate a classified cardiac response, the first cardiac response class comprising one of a plurality of cardiac response classes, the plurality of cardiac response classes comprising a pace-dominant response class, a non-capture response class, a fusion response class, a pseudo-fusion response class, a bi-ventricle (BiV) fusion response class, a left ventricle (LV) only BiV capture response class, and a right ventricle (RV) only BiV capture response class;
• verifying the classification of the cardiac response based on the second physiological parameter signal;
• determining a correlation, based on the temporal information, between the first physiological parameter signal and the classified cardiac response;
• causing a display device to present a representation of the correlation;
• and
• generating a therapy change recommendation that is different for different cardiac response classes of the plurality of cardiac response classes.