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Cerebral Oxygenation in Preterm Infants With Necrotizing Enterocolitis
Claire Howarth1,2, Jayanta Banerjee3,4, Terence Leung5
1Homerton University Hospital National Health Service Foundation Trust, London, United Kingdom.
Pediatrics
|August 28, 2020
Summary
Preterm infants who develop necrotizing enterocolitis (NEC) show lower cerebral oxygenation. This finding may explain their poorer neurodevelopmental outcomes, highlighting the importance of monitoring brain oxygen levels in high-risk infants.
Area of Science:
- Neonatology
- Neuroscience
- Pediatric Surgery
Background:
- Necrotizing enterocolitis (NEC) is associated with adverse neurodevelopmental outcomes in preterm infants.
- The underlying pathophysiology linking NEC to neurodevelopmental deficits remains unclear.
- Cerebral oxygenation may play a crucial role in this association.
Purpose of the Study:
- To investigate differences in cerebral oxygenation between preterm infants who develop NEC and those who do not.
- To explore potential pathophysiological mechanisms for neurodevelopmental disparities in NEC.
Main Methods:
- A cohort of 48 preterm infants (<30 weeks' gestation) was studied.
- Cerebral tissue oxygenation index (TOI) was measured weekly using near-infrared spectroscopy (NIRS) from the first week to 36 weeks postconceptional age.
- Infants were monitored for NEC (Bell stage ≥2), with exclusions for specific conditions like major congenital anomalies or twin-to-twin transfusion syndrome.
Main Results:
- Seven infants developed NEC.
- Infants who developed NEC exhibited significantly lower cerebral tissue oxygenation index (P = .011) compared to those without NEC.
- This difference persisted after adjusting for confounders such as gestational age, birth weight, and patent ductus arteriosus.
Conclusions:
- Preterm infants who develop NEC have persistently lower cerebral oxygenation during their NICU stay.
- Reduced cerebral oxygenation may be a key factor contributing to the worse neurodevelopmental outcomes observed in infants with NEC.
- This study provides novel insights into the pathophysiology of NEC-related neurodevelopmental issues.
