Fig. 1. (Left ) Evolution of right ventricular stroke work index (RVSWI) as a function of right ventricular end-diastolic volume index (RVEDVI) during acute normovolemic hemodilution. (Right ) Evolution of left ventricular stroke work index (LVSWI) as a function of pulmonary artery occluded pressure (PAOP) during acute normovolemic hemodilution. Squares = awake patients; diamonds = anesthetized patients; open symbols = before ANH; closed symbols = after ANH. *P < 0.05; **P < 0.01 after versus before actue normovolemic hemodilution. ##P < 0.01 in awake versus anesthetized groups.