Answer:
Stroke volume
Step-by-step explanation:
Stroke volume is volume of the blood pumped per beat from left ventricle. It can be calculated by using the measurements of the ventricle volumes from echocardiogram and then subtracting volume of blood present in ventricle at end of the beat which is known as end-systolic volume from volume of the blood which is just prior to beat which is known as end-diastolic volume.
The term can be applied to each of two ventricles of heart but it usually refers to left ventricle.