Neurologic outcomes in very preterm infants undergoing surgery

Area of Science:

• Neonatal neuroscience
• Pediatric surgery outcomes
• Developmental pediatrics

Background:

• Very preterm infants often require surgical interventions.
• The impact of surgery on developing brains is not fully understood.
• Early brain development is critical for long-term neurodevelopmental outcomes.

Purpose of the Study:

• To examine the association between surgical procedures in very preterm infants and their brain structure.
• To evaluate the neurodevelopmental outcomes at 2 years of age in infants who underwent surgery.
• To identify potential risks associated with surgery in this vulnerable population.

Main Methods:

• A prospective longitudinal observational cohort study of 227 infants born before 30 weeks gestation or with low birth weight.
• Infants were categorized into surgical (n=30) and nonsurgical (n=178) groups.
• Brain structure was assessed using magnetic resonance imaging at term equivalent, and neurodevelopment was evaluated at 2 years.

Main Results:

• Surgical infants had smaller brain volumes, particularly in deep nuclear gray matter, and increased white matter injury.
• Infants undergoing bowel surgery showed greater white matter injury.
• Lower Mental Developmental Index scores were observed in the surgical group, though this became nonsignificant after adjusting for confounders.

Conclusions:

• Surgical exposure and anesthesia in preterm infants are associated with impaired brain development, including reduced brain volumes and white matter injury.
• Clinicians should be aware of the increased risk for adverse cognitive outcomes in preterm infants who have undergone surgery.
• Further research is needed to explore protective strategies and long-term impacts.