Fig. 2

Correlation heat map between the cytokine plasma levels of term newborns with critical congenital heart defects with or without necrotizing enterocolitis (NEC) across the perioperative period. Color scale bars show a range of nonparametric Spearman correlation (r). The red color corresponds to a strong positive correlation, the purple color - a strong negative correlation. Only significant correlations are presented (p < 0.01). No-NEC_BS and No-NEC_AS represent no-NEC newborns before and after cardiac surgery (n = 28); NEC_BS and NEC_AS represent NEC newborns before and after cardiac surgery (n = 8), respectively.