text: In cardiovascular physiology,<unk>  <unk>  is the<unk>  of blood pumped out of a ventricle with each heart beat. The term<unk>  applies to both the right and left ventricles; one can speak equally of the left ventricular<unk>  (LVEF) and the right ventricular<unk>  (RVEF). Without a qualifier, the term<unk>  refers specifically to that of the left ventricle.
  By definition, the volume of blood within a ventricle immediately before a contraction is known as the end-diastolic volume. Similarly, the volume of blood left in a ventricle at the end of contraction is end-systolic volume. The difference between end-diastolic and end-systolic volumes is the stroke volume, the volume of blood ejected with each beat.<unk>  <unk>  is the<unk>  of the end-diastolic volume that is ejected with each beat; that is, it is stroke volume (SV) divided by end-diastolic volume (EDV):
option_0: Ejection fraction
option_1: Cardiothoracic ratio
option_2: Coronary flow reserve
option_3: E/a ratio
option_4: Ventricular remodeling classification
option_5: Stroke volume
option_6: Pulmonary capillary wedge pressure
option_7: Diffusion capacity