The predictive value of S100B combined with neuron specific enolase and serum lactate for severe neonatal hypoxic ischemic encephalopathy / 国际儿科学杂志

ABSTRACT

Objective:To investigate the predictive value of central nervous system specific protein B (S100B)combined with neuron specific enolase(NSE)and serum lactate for severe neonatal hypoxic ischemic encephalopathy(HIE)induced by perinatal asphyxia.Methods:A retrospective study was conducted.A total of 126 neonates admitted to the Intensive Care Unit of Children′s Hospital Affiliated to Xi ′an Jiaotong University due to perinatal asphyxia from April 2019 to April 2022 were selected as the research subjects.Neonates who were clinically diagnosed with HIE were selected as the observation group(45 cases), and those without HIE were selected as the control group(81 cases). The differences of each parameter between the two groups were compared.Univariate and multivariate Logistic regression were used to analyze the indicators that might cause severe HIE.The risk factors were put into the receiver operating characteristic curve(ROC)to analyze their predictive value for prognosis.Results:There were no significant differences in gestational age, weight and gender between the two groups(all P>0.05). The Apgar scores in the observation group were lower than those in the control group; the rates of cardiopulmonary resuscitation, mechanical ventilation, and prolonged labor were higher than those in the control group.These differences are statistically significant(all P< 0.05). Compared with the control group, the observation group showed significantly higher rates of abnormal brain electroencephalogram and cranial magnetic resonance imaging, as well as increased levels of lactate, S100B( t-values for 8 h and 72 h were 13.10 and 2.00 respectively), and NSE( t-values for 8 h and 72 h were 10.85 and 15.57 respectively), all with statistical significance(all P< 0.05). By conducting binary Logistic regression analysis on indicators that might cause HIE, it was found that Apgar scores at 5 minutes and 10 minutes were negatively correlated with the risk of severe HIE( OR<1 and P<0.05). Prolonged labor, as well as factors such as cardiopulmonary resuscitation, mechanical ventilation, S100B concentration at 8 hours after birth, NSE concentration at 8 hours after birth, and lactate levels were all risk factors for poor prognosis( OR>1 and P<0.05). The predictive threshold values for severe HIE using the biochemical markers S100B, NSE, and lactate were 1.87 μg/L, 19 μg/L, and 4.6 mmol/L respectively.The sensitivity of prediction were 78%, 68%, and 75% respectively; while the specificity were 66%, 71%, and 67%, and all area under the curve(AUC)was greater than 0.5.The sensitivity of the combined prediction by the three factors was 87%, with a specificity of 79% and AUC 0.86( P<0.05). Conclusion:S100B, NSE and serum lactate are independent risk factors for predicting neonatal serve HIE, and the combination of the three indicators can improve the predictive efficiency.