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Maternal vitamin D and fetal growth in early-onset severe preeclampsia

Published:March 17, 2011DOI:https://doi.org/10.1016/j.ajog.2011.03.022

      Objective

      Recently, vitamin D deficiency has been associated with increased risks for preeclampsia and diagnosis of early-onset, severe preeclampsia (EOSPE). The purpose of this investigation was to examine the association between vitamin D levels and small-for-gestational age (SGA) in patients with EOSPE.

      Study Design

      Patients with EOSPE were recruited, and demographics, outcomes, and plasma were collected. We assessed 25-hydroxyvitamin D (25[OH]D) by radioimmunoassay and reported our findings in nanograms per milliliter. Results were analyzed by Mann-Whitney U test and Spearman correlation and were reported as median (Q1-Q3).

      Results

      In patients with EOSPE (n = 56), 25(OH)D was lower in patients with SGA (16.8 ng/mL; range, 8.9–23 ng/mL) vs normal fetal growth (25.3 ng/mL; range, 16–33 ng/mL; P = .02). 25(OH)D was correlated significantly with percentile growth at delivery (ρ = 0.31; P = .02).

      Conclusion

      Vitamin D is lower among patients with SGA in EOSPE than those without growth retardation. We suspect that vitamin D may impact fetal growth through placental mechanisms.

      Key words

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