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ORIGINAL ARTICLE
Year : 2013  |  Volume : 26  |  Issue : 2  |  Page : 145-150

Cardiac troponin I as an early predictor of perinatal asphyxia


1 Department of Pediatrics, Menoufia University, Shebin El Kom, Egypt
2 Department of Clinical Pathology, Menoufia University, Shebin El Kom, Egypt
3 Neonatal Intensive Care Unit, El-Ahrar Zagazig General Hospital, Zagazig, Sharqia, Egypt

Correspondence Address:
Ayat Shebl
Elmahad Eldini St, Building 2, Zagazig, Sharqia
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1110-2098.126148

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Objective The objective of this study was to test the hypothesis that cardiac troponin I (cTnI), a known marker of myocardial injury, is also an early predictor of both severity and mortality in cases of perinatal hypoxia. Background Delivery is a stressful and risky event that poses a risk to newborns. The mother-dependent respiration has to be replaced by autonomous pulmonary breathing immediately after delivery. If delayed, it may lead to deficient oxygen supply, compromising the survival and development of the central nervous system. The outcomes of perinatal asphyxia are devastating and permanent, making it a major burden for the patient, the family, and society. Thus, there has been considerable focus on the early identification of newborns exposed to perinatal asphyxia and development of therapeutic strategies to reduce long-term morbidity and mortality. Troponin is an inhibitory protein complex located on the actin filament in all striated muscles and consists of three subunits: T, C, and I. cTnI was measured as an indicator of cardiac injury for a long time, but it has been of interest for the prediction of poor neonatal outcome in perinatal asphyxia. Aim of the study The aim of this work was to test the hypothesis that cTnI, a known marker of myocardial injury, is also an early predictor of both morbidity and mortality in cases of perinatal hypoxia. Materials and methods This study was carried out between October 2011 and June 2012. It included 40 neonates with perinatal asphyxia admitted to the neonatal ICU, El-Ahrar Zagazig General Hospital. Twenty healthy neonates matched for both age and sex were selected randomly as a control group. Blood samples were collected from the two study groups. cTnI was measured in relation to neurological sequelae, and deaths in both the groups were also evaluated. Results The mean cTnI of asphyxiated neonates was 4.6 ΁ 4.4 ng/ml, significantly higher than that of the control neonates, which was 0.55 ΁ 0.6 ng/ml. This difference was statistically significant. Conclusion cTnI was markedly increased in perinatal asphyxia. This was related to the severity of perinatal asphyxia. It can also be used as an early predictor of neonatal morbidity and mortality in perinatal asphyxia.


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