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DOI: 10.1055/s-0041-1735158
The Assessment of Vitamin D Levels in Pregnant Women is not Associated to Fetal Growth Restriction: A Cross Sectional Study
A avaliação dos níveis de vitamina D em gestantes não está associada à restrição do crescimento fetal: um estudo transversal
Abstract
Objective To assess maternal serum levels of vitamin D in fetuses appropriate for gestational age (AGA), small for gestational age (SGA), and with fetal growth restriction (FGR) according to estimated fetal weight (EFW).
Methods This cross-sectional study included 87 pregnant women between 26 and 36 weeks of gestation: 38 in the AGA group, 24 in the SGA group, and 25 in the FGR group. Maternal serum vitamin D levels were assessed using the chemiluminescence method. The Fisher exact test was used to compare the results between the groups.
Results The mean ± standard deviation (SD) of maternal age (years) and body mass index (kg/m2) in the AGA, SGA, and FGR groups were 25.26 ± 8.40 / 26.57 ± 4.37; 25.04 ± 8.44 / 26.09 ± 3.94; and 25.48 ± 7.52 / 26.24 ± 4.66, respectively (p > 0.05). The maternal serum vitamin D levels (mean ± SD) of the AGA, SGA, and FGR groups were 22.47 ± 8.35 ng/mL, 24.80 ± 10.76 ng/mL, and 23.61 ± 9.98 ng/mL, respectively, but without significant differences between the groups (p = 0.672).
Conclusion Maternal serum vitamin D levels did not present significant differences among pregnant women with AGA, SGA, or FGR fetuses between 26 and 36 weeks of gestation according to EFW.
Resumo
Objetivo Avaliar o nível sérico materno de vitamina D em fetos adequados para idade gestacional (AIG), pequenos para idade gestacional (PIG) e com restrição de crescimento (RCF) de acordo com a estimativa de peso fetal (EPF).
Métodos Realizou-se um estudo transversal envolvendo 87 gestantes entre 26 e 36 semanas, sendo: 38 do grupo AIG, 24 do grupo PIG e 25 do grupo RCF. A dosagem sérica materna de vitamina D foi realizada pelo método de quimiluminescência. Para as comparações entre os grupos, utilizou-se o teste exato de Fisher.
Resultados A média ± desvio-padrão (DP) da idade materna (anos) e do índice de massa corporal (kg/m2) nos grupos AIG, PIG e RCF foram 25,26 ± 8,40 / 26,57 ± 4,37; 25,04 ± 8,44 / 26,09 ± 3,94; e 25,48 ± 7,52 / 26,24 ± 4,66, respectivamente (p > 0,05). A concentração sérica materna de vitamina D (médias ± desvios-padrão) dos grupos AIG, PG e RCF foram 22,47 ± 8,35 ng/ml; 24,80 ± 10,76 ng/ml; e 23,61 ± 9,98 ng/ml, respectivamente, contudo, sem diferenças significativas entre os grupos (p = 0,672).
Conclusão A concentração sérica materna de vitamina D não apresentou diferenças significantes entre gestantes com fetos AIG, PIG ou RCF entre 26 e 36 semanas de acordo com a EPF.
Keywords
pregnancy - maternal serum levels - vitamin D - small for gestational age - fetal growth restrictionPalavras-chave
gestação - concentração sérica materna - vitamina D - pequeno para idade gestacional - restrição de crescimento fetalContributions
All authors participated in the conception and design of the present study; analysis and interpretation of data; draft or revision of the manuscript; and they have approved the manuscript as submitted. All authors are responsible for the reported research.
Publication History
Received: 21 January 2020
Accepted: 21 July 2021
Article published online:
16 November 2021
© 2021. Federação Brasileira de Ginecologia e Obstetrícia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)
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