Polyvagal Theory and Neonatal Sleep: A Review of Autonomic Regulation and Implications for Sudden Infant Death Syndrome.

BACKGROUND

Neonatal sleep is critical for brain maturation and autonomic nervous system regulation. Disruptions in sleep patterns and vagal tone may contribute to the risk of sudden infant death syndrome (SIDS).

METHODS

This narrative review summarizes current evidence on the relationship between neonatal sleep states, autonomic nervous system maturation and polyvagal theory.

RESULTS

Studies suggest that vagal activity modulates neonatal sleep states, with implications for both emotional and physiological development. Premature infants may display immature vagal pathways, increasing their vulnerability to sleep-related disorders and SIDS.

CONCLUSION

The polyvagal framework offers a useful lens for understanding neonatal sleep regulation and guiding strategies for SIDS prevention and healthy neonatal care. Further research is warranted.