Journal
JOURNAL OF PEDIATRICS
Volume 141, Issue 3, Pages 405-409Publisher
MOSBY-ELSEVIER
DOI: 10.1067/mpd.2002.127090
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Funding
- NICHD NIH HHS [HD-29421] Funding Source: Medline
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Objective: To determine the 9-month follow-up iron status of infants born with abnormally low serum ferritin concentrations. Study design: Ten infants of >34 weeks' gestation with cord serum ferritin concentrations <5th percentile at birth (<70 mug/L) and 12 control infants with cord serum ferritin concentrations >80 mug/L had follow-up serum ferritin concentrations measured at 9 I month of age. The mean follow-up ferritins, incidences of iron deficiency and iron-deficiency anemia, and growth rates from 0 to 12 months were compared between the two groups. Results: At follow-up, the low birth ferritin group had a lower mean ferritin than the control group (30 +/- 17 vs 57 +/- 33 mug/L; P =.03), but no infant in either group had iron deficiency (serum ferritin <10 mu g/L) or iron-deficiency anemia. Both groups grew equally well, but more rapid growth rates were associated with lower follow-up ferritin concentrations only in the low birth ferritin group -0.52; P =.05). Both groups were predominantly breast-fed without iron supplementation before 6 months. Conclusions: Infants born with serum ferritin concentrations <5th percentile continue to have significantly lower ferritin concentrations at 9 months of age compared with infants born with normal iron status, potentially conferring a greater risk of later onset iron deficiency in the second postnatal year.
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