Author(s)

R. M. Shoucri

Abstract

Indexes derived from the non-linear end-systolic pressure-volume relation (ESPVR) are introduced in a way to study the performance of the left ventricle of the heart. The study sheds some light on the problem of heart failure with normal or preserved ejection fraction (HFpEF). It is shown that the ejection fraction (EF) is one index of several indexes that can be derived from the ESPVR in order to assess the performance of the left ventricle. Pressures acting on the left ventricle (ordinates of the ESPVR) as well as areas under the ESPVR (units of energy) can be used in assessing the performance of the left ventricle. Keywords: cardiac mechanics, mathematical physiology, pressure-volume relation in the ventricles, peak isovolumic pressure, active force of the myocardium, ventricular elastance, heart failure with preserved ejection fraction.

Keywords

Keywords: cardiac mechanics, mathematical physiology, pressure-volume relation in the ventricles, peak isovolumic pressure, active force of the myocardium, ventricular elastance, heart failure with preserved ejection fraction.