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Modeling Encephalopathy of Prematurity Using Prenatal Hypoxia-ischemia with Intra-amniotic Lipopolysaccharide in Rats
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Multi-organ involvement in preterm neonatal encephalopathy.

Lynn Bitar1, Srinivas Kota1, Michelle Machie1

  • 1Division of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Texas Southwestern Medical Center and Children's Medical Center, Dallas, TX, USA.

Early Human Development
|June 22, 2025
PubMed
Summary

Hypoxic-ischemic encephalopathy (HIE) in preterm infants frequently causes multiorgan dysfunction (MOD), impacting liver, heart, and kidneys. Early identification and management of MOD are vital for improving outcomes in this vulnerable population.

Keywords:
Hypoxic-ischemic encephalopathyMonitoringMulti-organ dysfunctionNewbornPreterm

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Area of Science:

  • Neonatalogy
  • Pediatric Neurology
  • Critical Care Medicine

Background:

  • Hypoxic-ischemic encephalopathy (HIE) is a severe birth complication.
  • Multiorgan dysfunction (MOD) often accompanies HIE, particularly in term neonates.
  • Focusing on preterm neonates is crucial due to critical brain development periods.

Purpose of the Study:

  • Assess MOD incidence and severity in preterm neonates with HIE.
  • Correlate MOD with brain MRI and EEG findings.
  • Understand the impact of HIE on organ function in premature infants.

Main Methods:

  • Retrospective cohort review of preterm neonates (<35 weeks' gestation) diagnosed with neonatal encephalopathy (NE).
  • Analysis of cardiac, renal, and liver function using clinical and laboratory markers (e.g., troponin T, creatinine, AST, ALT).
  • Evaluation of brain MRI/MRS and EEG abnormalities.

Main Results:

  • 54 preterm neonates with HIE (0.4/1000 incidence) experienced significant MOD.
  • High rates of liver (67%), cardiac (55%), and renal (37%) injury were observed.
  • 19% mortality due to MOD complications; 35% had seizures, 68% abnormal EEG, 83% abnormal MRI.

Conclusions:

  • MOD presents a substantial burden in preterm infants with HIE.
  • Enhanced screening and management strategies for MOD are necessary.
  • Vigilance for MOD is critical for developing neuroprotective interventions in preterm infants.