Comparison of serum cardiac troponin-I and creatine kinase MB isoenzyme concentrations in asphyxiated neonates

摘要

Objective:To assess the correlation of signs of myocardial damage to serum cardiac tmponin I(cTnI)and creatine kinase MB isoenzyme(CK-MB)concentrations.Methods:Blood samples were collected from 25 term asphyxiated neonates and 25 controls at 12 h of age by immunoassay.The asphyxiated neonates were followed up until discharge or death.Results:Asphyxiated neonates had significanfly higher concentrations of cTnI and CK-MB than controls(P＜0.001).Serum cTnI concentrations were significantly higher in asphyxiated neonates who developed hypotension,heart failure or those had low ejection fraction(P＜0.01).Serum cTnI concentrations were significantly higher in asphyxiated who died than those who survived(P＜0.01).There was no significant difference in selMnl CK-MB mass concentrations between asphyxiated neonates with and without these complications.Conclusion:Unlike CK-MB,serum cTnI concentrations are significantly higher in asphyxiated neonates who died or developed cardiac dysfunction.