is_about cardiovascular disorder heart cardiovascular system cardiovascular disease biomarker measurement left ventricular stroke volume measurement true Laura Harris PMID:31554410 Quantification of the volume of blood pumped from the left ventricle of the heart with each beat, calculated by subtracting the volume of blood in the ventricle at the end of a beat (end-systolic volume) from the volume of blood just prior to the beat (end-diastolic volume).