Publication: An observational, multicenter, registry-based cohort study of Turkish neonatal society in neonates with hypoxic ischemic encephalopathy
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Date
2023-12-14
Authors
Authors
Okulu, Emel
Hirfanoğlu, İbrahim Murat
Satar, Mehmet
Erdeve, Ömer
Koç, Esin
Özlü, Ferda
Gökçe, Mahmut
Armangil, Didem
Tunc, Gaffari
Demirel, Nihal
Journal Title
Journal ISSN
Volume Title
Publisher
Public Library Science
Abstract
Background Hypoxic ischemic encephalopathy (HIE) is a significant cause of mortality and short- and long-term morbidities. Therapeutic hypothermia (TH) has been shown to be the standard care for HIE of infants >= 36 weeks gestational age (GA), as it has been demonstrated to reduce the rates of mortality, and adverse neurodevelopmental outcomes. This study aims to determine the incidence of HIE in our country, to assess the TH management in infants with HIE, and present short-term outcomes of these infants. Methods The Turkish Hypoxic Ischemic Encephalopathy Online Registry database was established for this multicenter, prospective, observational, nationally-based cohort study to evaluate the data of infants born at >= 34 weeks GA who displayed evidence of neonatal encephalopathy (NE) between March, 2020 and April 2022. Results The incidence of HIE among infants born at >= 36 weeks GA (n = 965) was 2.13 per 1000 live births (517:242440), and accounting for 1.55% (965:62062) of all neonatal intensive care unit admissions. The rates of mild, moderate and severe HIE were 25.5% (n = 246), 58.9% (n = 568), and 15.6% (n = 151), respectively. Infants with severe HIE had higher rates of abnormal magnetic resonance imaging (MRI) findings, and mortality (p<0.001). No significant difference in mortality and abnormal MRI results was found according to the time of TH initiation (<3 h, 3-6 h and >6 h) (p>0.05). TH was administered to 85 (34.5%) infants with mild HIE, and of those born of 34-35 weeks of GA, 67.4% (n = 31) received TH. A total of 58 (6%) deaths were reported with a higher mortality rate in infants born at 34-35 weeks of GA (OR 3.941, 95% Cl 1.446-10.7422, p = 0.007). Conclusion The incidence of HIE remained similar over time with a reduction in mortality rate. The timing of TH initiation, whether <3 or 3-6 h, did not result in lower occurrences of brain lesions on MRI or mortality. An increasing number of infants with mild HIE and late preterm infants with HIE are receiving TH; however, the indications for TH require further clarification. Longer follow-up studies are necessary for this vulnerable population.
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Keywords
Whole-body hypothermia, Therapeutic hypothermia, Term, Newborns, Outcomes, Infants, Dysfunction, Severity, Injury, Science & technology, Multidisciplinary sciences, Science & technology - other topics