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首页> 外文期刊>Indian journal of pediatrics >Cardiac Troponin-T as a Marker of Myocardial Dysfunction in Term Neonates with Perinatal Asphyxia
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Cardiac Troponin-T as a Marker of Myocardial Dysfunction in Term Neonates with Perinatal Asphyxia

机译：Cardiac Troponin-T as a Marker of Myocardial Dysfunction in Term Neonates with Perinatal Asphyxia

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ObjectivesTo describe the diagnostic test properties of Cardiac Troponin-T (cTnT) in predicting myocardial dysfunction in asphyxiated term neonates by taking echocardiography as the gold standard and to establish the optimum cut-off values of cTnT for myocardial dysfunction, shock, severe hypoxic ischemic encephalopathy (HIE) and mortality by receiver operator characteristic (ROC) curve analysis.MethodsThis was a prospective study based on diagnostic test evaluation. The study included 120 term asphyxiated neonates in a tertiary care neonatal intensive care unit (NICU) in Southern India from June 2011 through June 2015. All the neonates were clinically evaluated. Venous blood was taken at 4 h of life for cTnT estimation. Echocardiography was done within 24 h of birth.ResultsThe mean cTnT level of asphyxiated term neonates was 0.2070.289ng/ml (mean +/- SD). Asphyxiated neonates with myocardial dysfunction had higher cTnT levels (0.277 +/- 0.231) as compared to those without myocardial dysfunction (0.061 +/- 0.036, p=0.0001). Using ROC curve, the cut-off cTnT values for myocardial dysfunction was 0.1145ng/ml with sensitivity 92.4 and specificity 94.1. Cardiac Troponin-T levels were significantly higher among asphyxiated neonates with shock (0.378 +/- 0.348, p=0.0001) and the levels also correlated positively with increasing grades of HIE. The cut-off cTnT value for mortality was 0.2505ng/ml with sensitivity 83.9 and specificity 96.6.ConclusionsIn asphyxiated term neonates, early cTnT elevation is a marker for predicting myocardial dysfunction and elevated cTnT levels had high sensitivity and specificity. There was significant relation with increasing cTnT values and increasing grades of HIE.

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