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Determination of Abnormal Fetal Growth or Amniotic Fluid With Third Trimester Ultrasounds in Uncomplicated Pregnancies: A Randomized Trial (UP)

7. august 2018 oppdatert av: Olaide Ashimi Balogun, The University of Texas Health Science Center, Houston

Determination of Abnormal Fetal Growth or Amniotic Fluid With Third Trimester Ultrasounds in Uncomplicated Pregnancies: A Randomized Trial (UP Trial)

The purpose of this study is to see whether women at a gestational age of 30 weeks or more without comorbidities, does performance of serial 3rd trimester growth ultrasounds increase the frequency of identifying abnormalities in fetal growth or amniotic fluid, when compared with women who only receive indicated ultrasounds?

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Faktiske)

206

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Forente stater
    • Texas
      • Bellaire, Texas, Forente stater, 77401
        • UT Physicians
      • Houston, Texas, Forente stater, 77030
        • University of Texas at Houston Health Science Center

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Hunn

Beskrivelse

Inclusion Criteria:

  • Maternal age of 18 at the time of consent
  • Singleton gestation

Exclusion Criteria:

  • First sonographic examination after 20 weeks
  • Women with any of the following co-morbidities: Autoimmune disorders (antiphospholipid antibody, lupus, rheumatoid arthritis, scleroderma), Cerclage in the index pregnancy, Diabetes mellitus-gestational or pre-gestational, Hematologic disorders (coagulation defects, sickle cell disease, thrombocytopenia, thrombophilia), Hypertension (chronic or pregnancy induced) before enrollment, HIV (human immunodeficiency virus), Institutionalized individuals (prisoners), Prior obstetric history of: [1) intrauterine growth restriction, 2) preterm birth before 34 weeks, 3) severe preeclampsia], eclampsia, HELLP syndrome, and 4) stillbirth after 24 weeks or neonatal death, Preterm labor or ruptured membranes before enrollment, Psychiatric disorder (bipolar, depression) on medication, Placenta previa / 3rd trimester bleeding, Renal insufficiency (serum creatinine > 1.5 mg/dL), Restrictive lung disease, Fetal red blood cell isoimmunization, Seizure disorder on medication, Thyroid disease on medication, Body Mass Index (BMI) above 40 kg/m2
  • Major fetal Anomaly including: anencephaly, spina bifida, bilateral renal agenesis, cystic hygroma with hydrops, diaphragmatic hernia, or congenital heart defects
  • Unable to understand consent in English or Spanish

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Diagnostisk
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: Routine third trimester care
Routine third trimester care with clinically-indicated ultrasound (control)
Enhet: Clinically-indicated ultrasound
Routine third trimester care with clinically-indicated ultrasound (control)
Eksperimentell: Serial third trimester ultrasound
Ultrasound evaluation for fetal growth and amniotic fluid will be performed every 4 weeks starting at 30 weeks (intervention group). Thus, if they continue to term, there will be 3 additional ultrasounds exams (30, 34 and 38 weeks).
Enhet: Serial third trimester ultrasound
Ultrasound evaluation for fetal growth and amniotic fluid will be performed every 4 weeks starting at 30 weeks (intervention group). Thus, if they continue to term, there will be 3 additional ultrasounds exams (30, 34 and 38 weeks).

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Number of Participants With Fetal Growth Restriction
Tidsramme: 30 to 38 weeks gestational age
30 to 38 weeks gestational age
Number of Participants With Large for Gestational Age Fetuses
Tidsramme: 30 to 38 weeks gestational age
30 to 38 weeks gestational age
Number of Participates With Oligohydraminos
Tidsramme: 30 to 38 weeks gestational age

Oligohydramnios is a condition in pregnancy characterized by a deficiency of amniotic fluid. Amniotic fluid was assessed using the amniotic fluid index (AFI) or maximum vertical pocket (MVP). Oligohydramnios was defined as AFI less than or equal to 5.0 cm or MVP less than or equal to 2.0 cm.

AFI is the sum of the vertical length of the deepest, unobstructed pocket of amniotic fluid in each of the 4 quadrants of the pregnant uterus. An AFI of less than or equal to 5cm is considered low amniotic fluid, and an AFI greater than or equal to 24cm is considered high amniotic fluid.

MVP is the vertical length of the single deepest pocket of amniotic fluid. An MVP less than or equal to 2cm is considered to be low amniotic fluid and an MVP of 8cm or greater is considered to be high amniotic fluid.

Both low and high amniotic fluid levels are worse outcomes than having normal amniotic fluid levels.
30 to 38 weeks gestational age
Number of Participates With Polyhydraminos
Tidsramme: 30 to 38 weeks gestational age

Polyhydraminos is a condition in pregnancy characterized by an excess of amniotic fluid. Amniotic fluid was assessed using either the amniotic fluid index (AFI) or maximum vertical pocket (MVP). Polyhydramnios was defined as AFI greater than or equal to 24.0 cm or MVP greater than or equal to 8.0 cm.

AFI is the sum of the vertical length of the deepest, unobstructed pocket of amniotic fluid in each of the 4 quadrants of the pregnant uterus. An AFI of less than or equal to 5cm is considered low amniotic fluid, and an AFI greater than or equal to 24cm is considered high amniotic fluid.

MVP is the vertical length of the single deepest pocket of amniotic fluid. An MVP less than or equal to 2cm is considered to be low amniotic fluid and an MVP of 8cm or greater is considered to be high amniotic fluid.

Both low and high amniotic fluid levels are worse outcomes than having normal amniotic fluid levels.
30 to 38 weeks gestational age

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Number of Participants With Composite Neonatal Morbidity
Tidsramme: From time of delivery to 28 days after delivery
Composite Neonatal Morbidity is defined as the presence of one or more of the following: 1) Apgar score < 5 at 5 min; 2) umbilical arterial pH < 7.00; 3) intraventricular hemorrhage grade III or IV; 4) periventricular leukomalacia; 5) intubation for over 24 hrs; 6) necrotizing enterocolitis grade 2 or 3; 7) stillbirth; or 8) death within 28 days of birth.
From time of delivery to 28 days after delivery
Number of Participants With Composite Maternal Morbidity
Tidsramme: From time of delivery to discharge (average time of discharge is 4 days after delivery)
Composite Maternal Morbidity is defined as the presence of one of more of the following: 1) chorioamnionitis; 2) cesarean delivery in labor; 3) wound infection; 4) transfusion; 5) deep venous thrombus or pulmonary embolism; 6) admission to intensive care unit; 7) postpartum hemorrhage; or 8) death.
From time of delivery to discharge (average time of discharge is 4 days after delivery)

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

The University of Texas Health Science Center, Houston

Etterforskere

  • Hovedetterforsker: Olaide A Ashimi Balogun, MD, The University of Texas Health Science Center, Houston

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. juni 2016

Primær fullføring (Faktiske)

1. august 2017

Studiet fullført (Faktiske)

1. august 2017

Datoer for studieregistrering

Først innsendt

25. februar 2016

Først innsendt som oppfylte QC-kriteriene

3. mars 2016

Først lagt ut (Anslag)

9. mars 2016

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

5. september 2018

Siste oppdatering sendt inn som oppfylte QC-kriteriene

7. august 2018

Sist bekreftet

1. august 2018

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • HSC-MS-16-0084

Plan for individuelle deltakerdata (IPD)

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