Effects of neonatal hyperbilirubinemia on myocardial enzyme levels and clinical significance / 中国医师进修杂志

ABSTRACT

Objective To explore the effect of high bilirubin on myocardial injury.Methods The levels of serum total bilirubin (TBIL),creatine kinase (CK),creatine kinase-isoenzyme MB(CK-MB),cardiac troponin Ⅰ (cTnI) were measured and compared in newborns without obvious physiological jaundice (control group) and newborns with hyperbilirubinemia (study group) before and after treatment.Results Compared with those in control group,the levels of serum TBIL,CK,CK-MB and cTnI in study group before treatment were obvious higher[(270.24 ± 36.89) μ mol/L vs.(68.95 ± 10.87) μ mol/L,(414.27 ± 135.45)U/L vs.(178.35 ± 59.62) U/L,(63.31 ± 23.25) U/L vs.(16.78 ± 8.89) U/L,(0.39 ± 0.11) μ g/L vs.(0.18 ± 0.07) μ g/L],and the differences between two groups were statistically significant (P ＜ 0.05).The levels of serum TBIL,CK,CK-MB and cTnI after treatment in study group [(69.13 ±9.98) μmol/L,(183.35 ± 61.01) U/L,(17.45 ± 9.0.8) U/L,(0.19 ± 0.01) μ g/L] were decreased obviously compared with those before treatment,and the differences between two groups were statistically significant (P ＜ 0.05).There was no significant difference between control group and study group after treatment (P ＞ 0.05).Conclusions High bilirubin can lead to a reversible myocardial injury.Cardiac enzymes and troponin testing should be routinely done for neonatal hyperbilirubinemia.It suggests doctors to attend to the treatment of myocardial protection.