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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Iron status and neurobehavioral development of premature infants
Rinat Armony-Sivan1, Arthur I Eidelman, Amos Lanir
1Department of Pediatrics, Shaare-Zedek Medical Center, Jerusalem, Israel.
Insights
Low iron status in premature infants, indicated by anemia and low ferritin, is linked to poorer neurobehavioral development. This impacts reflex scores, highlighting the importance of monitoring iron levels in preterm babies.
Area of Science:
- Neonatal Medicine
- Developmental Pediatrics
- Nutritional Neuroscience
Background:
- Premature infants are at risk for iron deficiency due to limited iron stores and rapid growth.
- Iron is crucial for brain development, and its deficiency can impact neurobehavioral outcomes.
Purpose of the Study:
- To investigate the association between iron status and neurobehavioral development in preterm infants.
- To determine if anemia and low iron stores correlate with altered reflex development.
Main Methods:
- Study included infants born before 34 weeks postmenstrual age.
- Iron status assessed by hemoglobin and serum ferritin levels; anemia defined as hemoglobin ≤10 g/dL, low iron stores as ferritin ≤75 μg/L.
- Neurobehavioral development evaluated using 18 reflexes at 37 weeks postmenstrual age, with higher scores indicating more abnormal reflexes.
Main Results:
- Infants with both anemia and low ferritin (Group 1) exhibited significantly higher reflex scores (poorer neurobehavioral status) compared to non-anemic infants with normal ferritin (Group 3).
- Infants with anemia and normal ferritin (Group 2) showed intermediate reflex scores, not significantly different from the other groups.
Conclusions:
- Low iron status, evidenced by both anemia and low ferritin levels, is associated with impaired neurobehavioral status in premature infants.
- These findings underscore the importance of assessing and managing iron status in preterm neonates to support optimal neurodevelopment.
Objective:
This study was conducted to examine the relation between iron status and neurobehavioral development in premature infants.
Study Design:
Infants born before 34 weeks postmenstrual age and who were medically stable were studied. Anemia was defined as hemoglobin < or =10 g/Dl and low iron stores as a serum ferritin concentration < or =75 microg/l. The infants were classified as anemic with low ferritin (Group 1; n=18), anemic with normal ferritin (Group 2; n=14), and nonanemic with normal ferritin (Group 3; n=21). A total of 18 reflexes were behaviorally evaluated at 37 weeks postmenstrual age and "reflex scores" were compared between the groups. Higher scores reflect a greater percentage of abnormal reflexes.
Results:
Infants in group 1 (anemia/low ferritin) had a significantly higher reflex score (51.45+/-18.32%) than infants in Group 3 (38.32+/-17.75%). Group 2 had an intermediate score (45.40+/-21.70%), but not different from the other two groups.
Conclusion:
These data indicate that low iron status, both measured by anemia and ferritin levels, is related to poorer neurobehavioral status in premature infants.
