Vitamin D and Preeclampsia

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

3173 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-04-17

Study Completion Date

2015-03-16

Brief Summary

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Hypothesis : Vitamin D serum concentration is decreased in the first trimester in pregnant women who will develop preeclampsia in the second or third trimester compare to a control group Primary purpose : To determine the vitamin D status in the first trimester in a large population of french pregnant women in order to evaluate the importance of the vitamin D deficiency in France and correlate this deficiency with preeclampsia

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Detailed Description

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Primary purpose : To compare the vitamin D (25OHD) status, in the first trimester, in a group of patients with preeclampsia and a group of pregnant women without preeclampsia.

Secondary purpose : (i)To compare the vitamin D status in the third trimester in a group of patients with preeclampsia and a group of pregnant women without preeclampsia. (ii) To evaluate the deficit un vitamin D in a population of pregnant women in the parisian area. (iii) To evaluate the calcemia of the newborns after maternal systematic oral intake of vitamin D 100000U at 28 weeks Methodology : Multicenter (6 centers), Cohort, Nested case-control study Protocol : 4500 patients will be recruited. A blood sample will be performed : in the first trimester (11-14 weeks), in the third trimester (28-40 weeks), and cord blood. For each patient with preeclampsia, 4 controls will be taken from the cohort and matched by parity, race/ethnicity, maternal age, season, BMI. The serum concentration of 25OHD will be measured in all samples.A dosage of 25OHD will be performed in 1000 women from the initial cohort in order to calculate the prevalence of vitamin D deficiency.

Conditions

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Vitamin D Deficiency Defined as Serum 25OHD < 75 Nmol/l or 30ng/ml Preeclampsia Neonatal Hypercalcemia Pregnancy

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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Pregnant women

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Pregnant woman
* First trimester
* Singleton
* Affiliated to Social security policy
* Woman who gave informed consent

Exclusion Criteria

* Hypercalcemia (\>2.65 mmol/l) or any other phosphocalcic disease
* Hypertension (\>140/90) from the first trimester
* Renal insufficiency (creatinine \> 120µmol/l)
* Bone disease (osteogenesis imperfecta…)
* Lithium therapy
* Bowel malabsorption
* Kidney stones

Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No