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Vitamin D3 Supplementation Regimens and Preeclampsia Risk (VitD-PE-RCT)

12. juni 2026 opdateret af: Amany Omer Yousef Taib, Sana'a University

Effect of Different Dosages of Vitamin D3 Supplementation on the Risk of Preeclampsia in Pregnant Women With Vitamin D Deficiency

This study is a randomized controlled trial with two parallel groups connected at Al-Thawra Modern General Hospital in Sana'a, Yemen.

It aims to compara the effect of two different vitamin D3 supplementation regimens during pregnancy on the risk of pre-eclampsia among women with confirmed vitamin D deficiency.

Pregnant women attending antenatal care and diagnosed with vitamin D deficiency will be screened for eligibility. Eligible participants will be randomly assigned to one of two intervention groups:one group receiving vitamin D3 50,000 IU every two weeks and the other group receiving vitamin D3 5,000 IU weekly,in addition to standard antenatal care.

The study will include singleton pregnancies between 8_18 weeks of gestation with serum 25-hydroxyvitamin D level below 25 ng /mL . Women with chronic conditions that may affect pregnancy outcomes or vitamin D metabolism will be excluded. Participants will be followed throughout pregnancy to assess the development of pre-eclampsia and other maternal and fetal outcomes.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Vitamin D deficiency during pregnancy has been associated with advers maternal and neonatal outcomes, including an increased risk of preeclampsia.However,the optimal dosage regimen of vitamin D3 supplementation in deficient pregnant women remains uncertain.

This randomized controlled trial will be conducted at Al-Thawra Modern General Hospital in Sana'a, Yemen, and will include pregnant women with confirmed vitamin D deficiency in early pregnancy. Participants will be randomly assigned to one of two vitamin D3 supplementation regimens and followed throughout pregnancy.

The study aims to compare the effectiveness of two different vitamin D3 dosing scheduales in reducing the incidence of preeclampsia.Maternal vitamin D status and pregnancy outcomes will be assessed as secondary measures to evaluate the overall impact of supplementation.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

268

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Amany Omer Taib, MBBS
  • Telefonnummer: +967775851225
  • E-mail: a.taib@su.edu.ye

Studiesteder

  • Yemen
    • Maeen District
      • Sanaa, Maeen District, Yemen
        • Rekruttering
        • Faculty of Medicine and Health Sciences, Sana'a University
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Singleton pregnancy
  • Pregnant women between 8 and 18 weeks of gestation
  • Serum 25-hydroxyvitamin D [25(OH)D] level < 25 ng/mL
  • Willing and able to provide written informed consent
  • Planning to receive ongoing antenatal care and deliver at Al-Thawra Modern General Hospital.

Exclusion Criteria:

  • Uncontrolled chronic hypertension
  • Current use of vitamin D supplementation before enrollment
  • Severe chronic kidney disease
  • Pre-existing diabetes mellitus
  • Autoimmune or immunological disorders
  • Known fetal congenital anomalies
  • Primary hyperparathyroidism
  • Thyroid disease
  • Use of medications that affect vitamin D or calcium metabolism
  • Inability or unwillingness to comply with the study protocol or follow-up schedule

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Arm 1: Vitamin D3 50,000 IU every 2 weeks
Participants in this arm will receive oral vitamin D3 supplementation at a dose of 50,000 IU every 2 weekly in addition to routine antenatal care. Supplementation will continue from enrollment until delivery, and participants will be monitored throughout pregnancy for the development of preeclampsia and other maternal and neonatal outcomes.
Kosttilskud: Vitamin D3

Arm 1:

Oral vitamin D3 supplementation administered during pregnancy. Participants will receive : 50,000 IU every two weeks according to their randomized group assignment.

Kosttilskud: Vitamin D3
Oral vitamin D3 supplementation administered during pregnancy. Participants will receive : 5,000 IU every week according to their randomized group assignment.
Eksperimentel: Arm 2 : Vitamin D3 5,000 IU every week
Participants in this arm will receive oral vitamin D3 supplementation at a dose of 5,000 IU once weekly in addition to routine antenatal care. Supplementation will continue from enrollment until delivery, and participants will be monitored throughout pregnancy for the development of preeclampsia and other maternal and neonatal outcomes.
Kosttilskud: Vitamin D3

Arm 1:

Oral vitamin D3 supplementation administered during pregnancy. Participants will receive : 50,000 IU every two weeks according to their randomized group assignment.

Kosttilskud: Vitamin D3
Oral vitamin D3 supplementation administered during pregnancy. Participants will receive : 5,000 IU every week according to their randomized group assignment.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Incidence of Pre-eclampsia events
Tidsramme: From 20 weeks of gestation until delivery
Occurance of preeclampsia during pregnancy , diagnosed according standared clinical criteria including new onset hypertention after 20weeks of gestation with proteinuria or other feature of maternal organ dysfunction.
From 20 weeks of gestation until delivery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Severity of Preeclampsia
Tidsramme: At diagnosis of preeclampsia until delivery
Description Severity of preeclampsia assessed by the need for preterm delivery, maternal intensive care unit admission, or other severe maternal complications.
At diagnosis of preeclampsia until delivery
Gestational Age at Onset of Preeclampsia
Tidsramme: At first diagnosis of preeclampsia
Gestational age in weeks at the time of first diagnosis of preeclampsia.
At first diagnosis of preeclampsia
Occurrence of Severe Maternal Complications
Tidsramme: From enrollment until delivery
Occurrence of HELLP syndrome, eclampsia, or placental abruption during pregnancy
From enrollment until delivery
Incidence of Gestational Diabetes Mellitus
Tidsramme: From enrollment until delivery]
Occurrence of gestational diabetes diagnosed according to standard clinical criteria.
From enrollment until delivery]
Incidence of Gestational Hypertension
Tidsramme: From enrollment until delivery
Occurrence of gestational hypertension diagnosed according to standard clinical criteria.
From enrollment until delivery
Maternal Mortality
Tidsramme: From enrollment until 42 days postpartum
Death of a participant during pregnancy or within 42 days after termination of pregnancy.
From enrollment until 42 days postpartum
Incidence of Low Birth Weight
Tidsramme: At birth
Proportion of newborns with birth weight less than 2500 grams.
At birth
Incidence of Preterm Birth
Tidsramme: At delivery
Delivery occurring before 37 completed weeks of gestation.
At delivery
Neonatal Intensive Care Admission
Tidsramme: At birth
Admission of the newborn to a neonatal intensive care unit.
At birth
Mean Birth Weight
Tidsramme: At birth
Birth weight of newborns measured in grams.
At birth
Neonatal Mortality
Tidsramme: From birth to 28 days of life
Death of a live-born infant during the neonatal period.
From birth to 28 days of life

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Sana'a University

Efterforskere

  • Ledende efterforsker: Amany Omer Taib, MBBS, Faculty of Medicine and Health Sciences, Sana'a University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

4. august 2024

Primær færdiggørelse (Anslået)

1. august 2026

Studieafslutning (Anslået)

1. september 2026

Datoer for studieregistrering

Først indsendt

6. juni 2026

Først indsendt, der opfyldte QC-kriterier

12. juni 2026

Først opslået (Faktiske)

15. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

12. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • VitD-PE-2024
  • (26)-12-8 (Anden identifikator: Research Ethics Committee-Sana'a University)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data(IPD) will not be made publicly available. Data will be used solely for the purposes of this study and related scientific publications.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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