Abstract
Background: Myocardial damage, estimated to occur in 28%–73% of asphyxiated neonates, 1 is a major cause of mortality in perinatal asphyxia, and survivors can show significant myocardial morbidity as well. 2 Study Setting and Design: This study is a hospital-based prospective cohort study, done at the pediatrics department of a tertiary care hospital in northern India, from December 2020 to June 2022. Materials and Methods: 40 asphyxiated neonates with an APGAR score of <7 at 1 minute of life, as per the WHO–Neonatal Perinatal Database, were included in the study. They were graded as hypoxic ischemic encephalopathy (HIE) I (mild), II (moderate), and III (severe) based on Sarnat and Sarnat staging. The blood samples at 0 and 6 hours of life were taken for studying successive changes in the values of high-sensitivity cardiac troponin I (hs-cTnI) and creatinine phospho-kinase-myocardium-bound (CPK-MB). These were compared with various parameters such as electrocardiograph (ECG) findings, 2D-ECHO abnormalities, HIE severity, and outcome. Results: Among the two biomarkers that were assessed, hs-cTnI had the highest diagnostic value for detecting myocardial injury and was corelated with the severity of HIE and higher chances of death. Conclusion: The troponin I levels, in contrast to CPK-MB levels, were significantly associated with the outcome of the patient, implying that asphyxiated babies with elevated troponin I levels have a poorer prognosis and a higher mortality rate.
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