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Left-ventricular systolic function. The slope of the left-ventricular end-systolic pressure–volume relationship (Ees, left side) and preload-recruitable stroke work (PRSW, right side) before and after cardiopulmonary bypass (CPB) at 60 min of reperfusion. All values are given as mean ± SEM; o: p < 0.05 versus before CPB, *: p < 0.05 versus control.
