Objective To investigate the value of the E-selectin,IL-6 and TNF-α for the diagnosis of myocardial damage in children.Methods The E-selectin,IL-6 and TNF-α levels were detected in 62 patients with myocardial damage and 62 children without myocardial damage.The values of the E-selectin,IL-6 and TNF-α for the diagnosis of myocardial damage were analyzed by the receiver operating characteristic (ROC) curve.Results E-selectin levels were (45.16 ± 5.34) and (15.37 ± 4.65) μg/L,respectively in the patients with myocardial damage and the control group,and the difference between the two groups was significant(P ＜ 0.001).IL-6 levels were (21.31 ± 5.28) ng/L and (17.09 ± 4.62) ng/L,TNF-α levels were (27.22 ± 8.56) ng/L and(21.46 ± 8.08) ng/L,showing no significant difference (P ＞ 0.05).ROC curve analysis showed that AOC of E-selectin in the diagnosis of myocardial damage was 0.945 with 95％ CI 0.899 ～0.991 (sensitivity:0.801,specificity:0.999,Youden Index:0.800),and the cutoff value was 29.93 μg/L.Conclusion E-selectin can be used as one of the diagnostic indices for myocardial damage in children,which has great diagnostic value.IL-6 and TNF-α are of limited value in the diagnosis of myocardial damage.

Objective To detect the plasma amino-terminal pro-B-type natriuretic peptide (NT-ProBNP) of children with congenital heart disease(CHD) prior to heart surgery,to analysize its sensitivity,specificity and Youden index by receiver operating characteristic(ROC) curve,to explore the cut-off values of plasma NTProBNP for the diagnosis of congestive heart failure(CHF) in children under 5 years old before and after age stratification.Method The plasma NT-proBNP was detected for 100 children with CHD prior to heart surgery (experimental group) and 100 normal children(control group) between January 2011 to January 2013.Age stratification(0 ～ 1 year group,～3 years group and ～ 5 year group) was conducted in children with CHF younger than 5 years old to explore the cut-off values of plasma NT-ProBNP for the diagnosis of CHF.Results The NT-proBNP of 34 patients with CHF(n =100) was in accordance to Ross criteria The cut-off values were 502 ng/ L before age stratification,and they were 552 ng/L,449 ng/L,349 ng/L after age stratification for 0 ～ 1 year group,～ 3 years group and ～ 5 group.Conclusion The cut-off values of plasma NT-ProBNP for CHF were 552 ng/L、449 ng/L、349 ng/L for 0 ～ 1 year group,～ 3 years group and ～ 5 year group.