Vdiastole – Vsystole = ΔV, represents stroke volume.
Ejection fraction represents stroke volume (the volume of blood ejected with each beat) divided by end diastolic LV volume.
PP, representing stroke volume and vascular compliance (Dart and Kingwell 2001), was determined by subtracting DBP from SBP; and MAP, a function of ventricular contractility, resistance, elasticity, and heart rate (Sesso et al. 2000), was calculated by PP/3 + DBP.
In which FSV PET represents the forward stroke volume, I injected dose, HR the heart rate, and C A (t) the whole-blood time-activity curve (TAC) for the first-pass only.
After integration, the area under the curve represents the AV stroke volume (SV) and corresponds to the total blood volume mobilized in either caudal (output) or cranial (input) directions during the CC.
Global ZQ represents an approximation of stroke volume but, like any other method, has an inherent bias and variability, although within clinically acceptable limits.
Introduction In contrast to static parameters, e.g. central venous pressure (CVP), dynamic variables representing cardiorespiratory interactions, e.g. stroke volume variation, allow excellent prediction of fluid responsiveness (FR).
Effective arterial elastance (Ea, mmHg/relative volume units) was defined as end-systolic pressure divided by stroke volume and represents LV afterload with a strong correlation with the gold standard aortic input impedance [ 7, 19].
Averaging cardiac output over longer time periods with thermodilution CCO may not well represent the actual dynamic variation in stroke volume (SV) and cardiac output when measured against techniques that evaluate CO during shorter time intervals.
This shift reflects left ventricular dilation represented by increased EDV, maintenance of stroke volume (SV), and resultant marked reduction of left ventricular EF (EF = SV/EDV).
