Pressure recovery index to assess cardiac function

A method for assessing cardiac function, said method comprising:

• obtaining ventricular pressure data from a subject during an invasive cardiac procedure, said received pressure data comprising a diastatic ventricular pressure value, a minimum ventricular pressure value, and a predefined fiducial marker pressure value;
• determining a first pressure difference between the received diastatic ventricular pressure value and the received minimum ventricular pressure value;
• determining a second pressure difference between the received fiducial marker pressure value and the received minimum ventricular pressure value, wherein the fiducial marker pressure value corresponds to one or more of the following:
• an end diastolic pressure value, and a pressure value at the steepest slope of a pressure contour derived from the ventricular pressure data;
• comparing the first pressure difference with the second pressure difference to generate an index value indicative of early diastolic cardiac function, wherein the index value is based on a ratio of the first pressure difference to the second pressure difference;
• and
• providing the generated index value to a health care provider to provide an assessment of cardiac function in the subject.