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Mechanical Ventilation Duration, Brainstem Development, and Neurodevelopment in Children Born Preterm: A Prospective
Mireille Guillot1, Ting Guo1, Steven Ufkes1
1Department of Pediatrics (Neurology), University of Toronto and the Hospital for Sick Children, Toronto, Ontario, Canada.
The Journal of Pediatrics
|May 27, 2020
Summary
Prolonged mechanical ventilation in preterm infants is linked to poorer brainstem development and white matter maturation. This impacts motor skills at preschool age, highlighting risks for very preterm newborns.
Area of Science:
- Neonatal neuroscience
- Developmental pediatrics
- Pediatric neurology
Background:
- Mechanical ventilation is a critical intervention for preterm infants.
- Understanding its long-term effects on brain development is crucial.
Purpose of the Study:
- To investigate the association between mechanical ventilation duration and brainstem development, white matter maturation, and neurodevelopmental outcomes in preterm children.
- To validate findings in an independent cohort.
Main Methods:
- Prospective cohort study of 144 neonates born <30 weeks gestation.
- Magnetic resonance imaging (MRI) for brainstem volumes at term-equivalent age (TEA).
- Diffusion tensor imaging (DTI) for white matter maturation.
- Neurodevelopmental assessments at 4.5 years (motor and cognitive).
Main Results:
- Each additional day of mechanical ventilation correlated with lower motor scores.
- Prolonged ventilation was associated with smaller pons and medulla volumes and abnormal white matter maturation.
- Brainstem volumes at TEA predicted motor outcomes.
Conclusions:
- Prolonged mechanical ventilation in very preterm neonates is linked to impaired brainstem development and white matter maturation.
- This is associated with poorer motor outcomes in preschool-aged children.
- Further research into underlying neural mechanisms is warranted.
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