Patent ID: 8287459

Claim:
A system for interpolating left ventricle pressure in a patient comprising: a first sensor configured to monitor aortic pressure of the patient; a second sensor configured to monitor left atrial pressure of the patient; a third sensor configured to monitor cardiac valve events of the patient; and a processor programmed to interpolate left ventricle pressure of the patient based on a first point and a second point of a waveform corresponding to the monitored aortic pressure by the first sensor as a function of time, and a first point and a second point of a waveform corresponding to the monitored left atrial pressure by the second sensor as a function of time, wherein the first point of the measured left atrial pressure corresponds in time with a first of the monitored cardiac valve events by the third sensor and the second point of the measured left atrial pressure corresponds in time with a second of the monitored cardiac valve events by the third sensor; wherein the second point of the monitored aortic pressure coincides with a sudden transition from declining aortic pressures of a first negative slope to declining aortic pressures of a second negative slope less than the first negative slope.