IMR Press / CEOG / Volume 45 / Issue 5 / DOI: 10.12891/ceog4556.2018

Clinical and Experimental Obstetrics & Gynecology (CEOG) is published by IMR Press from Volume 46 Issue 1 (2019). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with S.O.G.

Open Access Original Research
The effect of maternal vitamin D status on pregnancy outcome and child health in the first year of life
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1 Department of Obstetrics and Gynaecology, Antwerp University Hospital UZA and Antwerp University UA, Edegem, Belgium
Clin. Exp. Obstet. Gynecol. 2018, 45(5), 677–681; https://doi.org/10.12891/ceog4556.2018
Published: 10 October 2018
Abstract

Aim: To study the relationship of maternal vitamin D level at the moment of delivery with gestational and infant outcomes. Materials and Methods: A single centre prospective cohort study. Main outcomes were birth weight percentile and respiratory tract infections in the first year, secondary outcomes gestational diabetes, preterm birth, pre-eclampsia, caesarean birth, and atopic dermatitis and gastroenteritis in the first year of life. Maternal vitamin D was determined in venous plasma after delivery, infant data were prospectively gathered through a diary kept by the parents. Results: A total of 240 deliveries was included. Vitamin D insufficiency was present in the large majority (n=205, 95.5%) In univariate analysis a significant association was found between vitamin D level < 10 ng/ml and birthweight < P10, but in multivariate analysis including parity, maternal age, fetal sex, gestational diabetes, maternal glucose level, and preeclampsia there was no significant contribution from low vitamin D. For only 37 (15%) infants complete follow up data for one year were available. An association was found between lower vitamin D and more than two respiratory tract infections; this relations disappeared when taking into account birthweight, breastfeeding, and having a sibling going to daycare. No relation was present between vitamin D and pre-eclampsia, caesarean birth, atopic dermatitis, and gastroenteritis. Conclusions: The actual cut off values for vitamin D should be questioned as over 90% of the population would be deficient. When considering other factors, maternal vitamin D at the moment of delivery does not correlate with birthweight percentile, respiratory tract infections in the first year of life, nor other frequent obstetric and infant problems.
Keywords
Vitamin D
Pregnancy
Preeclampsia
Gestational diabetes
Birthweight
Child health
Respiratory tract infection
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