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The Effect of a Light-Dark Cycle on Premature Infants in the Neonatal Intensive Care Unit: A Randomized Controlled
Ayşe Betül Olgun1, Didem Yüksel2, Figen Yardımcı3
1Dr. Behcet Uz Pediatric Diseases and Surgery Training and Research Hospital, Izmir, Turkey.
Insights
Implementing a light-dark cycle in neonatal intensive care units can lead to earlier discharge and improved weight gain in preterm infants. This nurse-led intervention shows promise for optimizing care for premature babies.
Area of Science:
- Neonatal intensive care
- Pediatric medicine
- Chronobiology
Background:
- Premature infants (28-32 weeks gestation) require specialized neonatal intensive care.
- Optimizing feeding, weight gain, and length of stay are critical outcomes for preterm infants.
- Environmental factors, such as light exposure, can influence infant development and care.
Purpose of the Study:
- To evaluate the impact of a light-dark cycle on preterm infants (28-32 weeks gestation) in the neonatal intensive care unit.
- To investigate differences in discharge time, feeding, weight gain, vital signs, pain, and comfort levels.
- To assess the feasibility of a nurse-led light-dark cycle intervention.
Main Methods:
- A randomized controlled study was conducted with preterm infants (28-32 weeks gestation).
- Infants were admitted to a teaching and research hospital's neonatal intensive care unit.
- Outcomes were compared between a study group exposed to a light-dark cycle and a control group over 8 weeks.
Main Results:
- Infants in the light-dark cycle group showed significantly improved feeding patterns, earlier transition to oral feeding, and higher daily weight gain.
- The study group experienced significantly shorter hospitalization durations and earlier discharge.
- No significant differences were observed in discharge weight, comfort levels, pain scores, or vital signs between groups.
Conclusions:
- A light-dark cycle is a feasible and promising intervention for preterm infants (28-32 weeks gestation).
- This nurse-led management strategy can be integrated into standard neonatal unit care.
- The intervention positively impacts key outcomes like weight gain and length of stay without compromising infant comfort or stability.
Purpose:
To investigate potential differences in discharge time, feeding methods and amounts, daily weight gain, vital signs, pain, and comfort levels among preterm infants born at 28-32 weeks' gestation who were hospitalized in the neonatal intensive care unit during long-term follow-up while implementing a light-dark cycle.
Design And Methods:
This is a randomized controlled study conducted with the support of a day-night cycle in premature infants born at 28-32 weeks' gestation and admitted to the neonatal intensive care unit of a teaching and research hospital affiliated with the Ministry of Health. The study compared the follow-up results from hospitalization to discharge over a period of 8 weeks.
Results:
50% of premature infants admitted to the unit are multiple pregnancies. There was no significant difference in discharge weight, comfort level, pain level, vital signs of the infants included in the study (p > 0.05). The optimal development of infant feeding patterns was examinedand it was observed that the study group had significantly improved before the control group in terms of the time to switch to full enteral feeding and oral feeding (p < 0,05). The daily weight gain of the babies was examined, it was seen that the weight gain was higher in the study group compared to the control group (p < 0,05). The mean duration of hospitalization was compared, it was seen that the babies in the study group were discharged significantly earlier (p < 0,05).
Conclusion:
The study compared the long-term outcomes of premature babies hospitalized in neonatal intensive care and babies exposed to a light-dark cycle and regularly monitored in standard care. The results showed that the babies in the study group had higher daily weight gain and were discharged earlier than the control group. There were also no statistically significant differences in comfort and pain scores, vital signs or oxygen saturation between the study and control groups.
Practice Implications:
A light-dark cycle was found to be a feasible and promising intervention for infants at 28-32 weeks' gestation. It was a nurse-led management of care that could be integrated into the usual care of 28-32-week-old babies in neonatal units.
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