Patent ID: 8636669

Claim:
A system adapted to be coupled to a patient, the system comprising: an acoustic sensor including an accelerometer adapted to sense an acoustic energy and produce an acoustic sensor signal indicative of heart sounds of the patient; a cardiac sensing circuit adapted to sense a cardiac signal indicative of cardiac electrical events; a heart sound detector coupled to the acoustic sensor and the cardiac sensing circuit, the heart sound detector adapted to detect selected heart sounds indicative of ventricular diastolic hemodynamic performance using the acoustic sensor signal and the cardiac signal; a parameter generator coupled to the heart sound detector, the parameter generator adapted to generate values of at least one predetermined parameter related to the selected heart sounds; and a processor coupled to the parameter generator, the processor adapted to perform a statistical process analyzing the values of the at least one predetermined parameter generated for a predetermined duration and produce at least one trend quantitatively presenting one or more ventricular diastolic filling pattern changes during the predetermined duration using an outcome of the statistical process.