heart what does esv(teich) mean
End-systolic volume (ESV) is the volume of blood in a ventricle at the end of contraction, or systole, and the beginning of filling, or diastole. ESV is the lowest volume of blood in the ventricle at any point in the cardiac cycle. The main factors that affect the end-systolic volume are afterload and the contractility of the heart. End systolic volume can be used clinically as a measurement of the adequacy of cardiac emptying, related to systolic function.