
04/23/2025
🌷 Spring showers bring May flowers and longer periods of sun!
This shift in light can influence the rhythmic signals within and between the cells in our body.
👶 How does this changing light exposure influence the development of babies in the neoantal intensive care unit (NICU)? While current research has begun to shed some light on this topic, the specific impact of light itself on neonatal development remains unclear.
🧠 At the core of this system is the suprachiasmatic nucleus, a small brain region that serves as the body’s central pacemaker guiding our biological clock. The circadian rhythm within the womb is guided by the mother’s physiologic signals which are no longer received following preterm birth. It remains uncertain whether the neonatal circadian timing system can function independently of the mother. Understanding this mechanism will offer critical insights into how we adjust our NICU care to optimize growth and development.
💡 Current research suggests that introducing a light/dark cycle in the NICU may promote weight gain and earlier discharge, however, further studies are needed to better inform guidelines. Until then, clinicians are advised to follow existing protocols to minimize bright light exposure, use cycled lighting strategies, and make individual infant needs a priority.
Interested in learning more? Here are some articles on this topic:
• Beginning to See the Light: Lessons Learned From the Development of the Circadian System for Optimizing Light Conditions in the Neonatal Intensive Care Unit https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2021.634034/full
• Characterizing light-dark cycles in the Neonatal Intensive Care Unit: a retrospective observational study https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2023.1217660/full
• Effects of the neonatal intensive care environment on circadian health and development of preterm infants https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2023.1243162/full