Dietary Salt During Pregnancy and Maternal Vascular Function
Influence of Dietary Salt Intake During Pregnancy on Maternal Systemic and Uteroplacental Vascular Function
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Detaillierte Beschreibung
During the study pregnant women at the third trimester of pregnancy (37-38 weeks of pregnancy) will have one study visit during which following procedures will be done:
- measurement of maternal systemic microvascular function by Laser Doppler flowmetry (post-occlusive reactive hyperemia, iontophoresis of acetylcholine and sodium nitroprusside)
- measurement of maternal systemic macrovascular function by vascular ultrasound measurement of brachial artery flow mediated dilation (FMD)
- measurement of maternal uteroplacental function by ultrasound color Doppler measurement of umbilical artery and fetal middle cerebral artery blood flow
- venous blood sampling; serum will be stored for measurement of oxidative stress, matrix metalloproteinase 9 and endocan level
- 24-hour urine natriuresis (to estimate daily salt intake)
- measurement of blood pressure, heart rate, height and weight, body composition
Immediately after the childbirth following procedures will be done:
- assessment of pregnancy outcome (duration of pregnancy, child birth weight, child birth length and Apgar score)
- placental tissue will be taken and stored for measurement of matrix metalloproteinase 9
Studientyp
Studientyp
Einschreibung (Voraussichtlich)
Einschreibung
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Martina Vulin, MD
- Telefonnummer: +38531512300
- E-Mail: martina.vulin@gmail.com
Studienorte
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Osijek, Kroatien, 31000
- Rekrutierung
- Osijek University Hospital
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Kontakt:
- Martina Vulin, MD
- Telefonnummer: +385 31 512 300
- E-Mail: martina.vulin@gmail.com
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Kind
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria:
- healthy pregnant women in the third trimester of pregnancy (37-38 weeks of pregnancy)
Exclusion Criteria:
- smoking
- prenatal hypertension
- thrombophilia
- low molecular weight heparin use
- coronary heart disease
- preconception diabetes
- gestational diabetes
- renal impairment
- cerebrovascular and peripheral artery disease
- any other preconception disease that could affect vascular and endothelial function
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Anzahl der Gruppen / Kohorten
Kohorten und Interventionen
Gruppe / KohorteGruppe / Kohorte |
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Low-salt (LS) group
intake of < 5 g of salt per day
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Normal-salt (NS) group
intake of 5 - 7.5 g of salt per day
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High-salt (HS) group
intake of 7.5 - 10 g of salt per day
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Very high-salt (VHS) group
intake of > 10 g of salt per day
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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Maternal systemic microvascular function
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Skin microvascular reactivity assessed by Laser Doppler flowmetry (post-occlusive reactive hyperemia, iontophoresis of acetylcholine and sodium nitroprusside) - measured in perfusion units (PU)
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Maternal systemic macrovascular function
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Vascular ultrasound measurement of brachial artery flow mediated dilation (FMD)
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Maternal uteroplacental function
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Ultrasound color Doppler measurement of umbilical artery and fetal middle cerebral artery blood flow
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Oxidative stress - thiobarbituric acid reactive substances (TBARS)
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Measurement of biomarkers of oxidative stress level.
Thiobarbituric acid reactive substances (TBARS) - biomarker of lipid peroxidation.
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Matrix metalloproteinase 9
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy) (serum) and immediately after childbirth (placental tissue sample)
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ELISA measurement of serum matrix metalloproteinase 9 level in mother serum and placental tissue sample (taken after childbirth)
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy) (serum) and immediately after childbirth (placental tissue sample)
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Endocan
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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ELISA measurement of serum endocan level - proteoglycan associated with endothelium activation
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Pregnancy outcome - duration
Zeitfenster: the outcome measure will be assessed at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Duration of pregnancy (weeks and days)
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the outcome measure will be assessed at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Pregnancy outcome - birth weight
Zeitfenster: at one time point immediately after childbirth
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Birth weight (in grams)
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at one time point immediately after childbirth
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Pregnancy outcome - birth length
Zeitfenster: at one time point immediately after childbirth
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Birth length (in cm)
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at one time point immediately after childbirth
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Pregnancy outcome - Apgar score
Zeitfenster: at one time point immediately after childbirth
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Apgar score (in Apgar score scale, a total score of 1 to 10; the higher the score, the better the baby is doing after birth)
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at one time point immediately after childbirth
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Andere Ergebnismessungen
Andere Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Blood pressure
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Automatic oscillometric measurement of systolic and diastolic blood pressure (in mmHg)
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Heart rate
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Automatic oscillometric measurement of heart rate (bpm)
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Body mass index
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Measurement of BMI (kg/m2)
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Body composition
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Body composition and body fluid status measurement by a four-terminal portable impedance analyzer.
Based on the value of skin resistance (Ohm) empirically derived formulas (the original manufacturer's software) will be used to calculate the estimated Fat Free Mass (FFM kg) and Fat (Fat Mass kg).
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Body fluid status
Zeitfenster: at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Body fluid status measurement by a four-terminal portable impedance analyzer.
Based on the value of skin resistance (Ohm) empirically derived formulas (the original manufacturer's software) will be used to calculate the estimated Total Body Water (TBW L), Extracellular Water (ECW L), Intracellular Water (ICW L), Plasma Fluid (PF L) and Interstitial Fluid (IF L).
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at one time point in the third trimester of pregnancy (37-38 weeks of pregnancy)
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Studienstuhl: Ines Drenjančević, MD, PhD, Faculty of Medicine Josip Juraj Strossmayer University of Osijek
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Voraussichtlich)
Primärer Abschluss
Studienabschluss (Voraussichtlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 602-04/21-08/07
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