During the late phase of the cardiopulmonary bypass ( CPB ) ( T3 ) , the FCD was still significantly depressed in both treatment groups ( 153.5 14.6 cm/cm in the CECC group , P < 0.05 vs ` T1 ' ; 159.5 12.4 cm/cm in the MECC group , P < 0.05 versus ` T1 ' ) .