Criteria for study of heart failure derived from ESPVR

In this study, the end-systolic pressure-volume relation (ESPVR) is used to derive new criteria that can help understand the problem of heart failure with normal or preserved ejection fraction (HFpEF). It is shown that the ejection fraction (EF) is just one index of several indexes that can be derived from the parameters describing the ESPVR and related areas under ESPVR.