Greater venous return provides higher preload to the right and left
ventricles. Left and right heart filling pressures including central
venous, right ventricular end-diastolic, left atrial, and left ventricular
end-diastolic pressures increase. Left and right ventricular stroke
volume increase according to the Starling mechanism by as much as
75–120 cc, with a resulting increase in cardiac output by 30–60%.
Blood pressure elevation then activates baroreceptors, which reduce
heart rate