Levosimendan also could decrease the lactic acid ( mmol/L : @ @ vs. @ @ , t = @ , P = @ ) , and increase the lactate clearance rate ( mL/min : @ @ vs. @ @ , t = -@ , P = @ ) , @-hour urinary output ( mL : @ @ @ vs. @ @ @ , t = @ , P = @ ) and @-hour cumulative intake ( mL : @ @ @ vs. @ @ @ , t = @ , P = @ ) .