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Correlation of Continuous Glucose Monitoring and Glucose Tolerance Testing With Pregnancy Outcomes

13. april 2016 opdateret af: Yasser Yehia El-Sayed, Stanford University
Diabetic pregnant patients are at risk for adverse pregnancy outcomes, including larger than expected fetuses and unplanned operative deliveries, due to elevated blood glucose levels. the one-hour glucola test is currently used to screen pregnant patients for gestational diabetes. This involves ingesting a 50-gram glucose load, followed by a blood test one hour later. We wish to compare 7-day continuous glucose monitoring to the one-hour glucola test, and determine which one correlates better with adverse pregnancy outcomes as well as which one more accurately identifies patients at risk for adverse pregnancy outcomes.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

All pregnant patients without pre-existing diabetes will be eligible for the study. Interest in participation will be determined at their initial prenatal visit. Those that are interested will be consented. Between 24-28 weeks of gestation, the recommended period of glucola testing, a soft sensor for continuous glucose monitoring system (CGMS) will be inserted superficially under the skin. The patient will be instructed on how to wear and care for the device. She will wear the CGMS for 7 days, then return to the clinic for removal of the device, and downloading of the data. She will perform the routine glucola test sometime between days 2 to 7 . Finger stick blood glucoses will be checked by the patient 2 times daily during the 7 days of wearing the CGMS. Results of CGMS will not be available to the patient or her physician until after completion of the pregnancy. The patient will be treated routinely, based on the results of the routine glucola test.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

57

Fase

  • Fase 2
  • Fase 1

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • California
      • San Jose, California, Forenede Stater, 95128
        • Santa Clara Valley Medical Center
      • Stanford, California, Forenede Stater, 94305
        • Stanford University School of Medicine

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

18 år til 50 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  • Pregnant patients
  • Age 18-50
  • Gestational age less than 28 weeks

Exclusion Criteria:

  • Minors less than 18 years of age
  • Multiple gestation
  • Known fetal anomalies

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: Continuous Glucose Monitor in pregnancy
The Seven Continuous Glucose Monitoring System: Between 24-28 weeks of gestation, the recommended period of glucola testing, a soft sensor for continuous glucose monitoring system (CGMS) will be inserted superficially under the skin. The patient will be instructed on how to wear and care for the device. She will wear the CGMS for 7 days, then return to the clinic for removal of the device, and downloading of the data. Finger stick blood glucoses will be checked by the patient 2 times daily during the 7 days of wearing the CGMS.
Enhed: The Seven Continuous Glucose Monitoring System
Between 24-28 weeks of gestation, the recommended period of glucola testing, a soft sensor for continuous glucose monitoring system (CGMS) will be inserted superficially under the skin. The patient will be instructed on how to wear and care for the device. She will wear the CGMS for 7 days, then return to the clinic for removal of the device, and downloading of the data. Finger stick blood glucoses will be checked by the patient 2 times daily during the 7 days of wearing the CGMS.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlation Between Glucose AUC and Birth Weight.
Tidsramme: CGM measured 7 days at beginning of pregnancy,birth weight measured a time of delivery
For each patient's CGM data, we calculated the total area under the curve (AUC) for values above the predefined cutoffs of 110, 120, 130, 140, and 180 mg/dL. Patients wore the CGM for different amounts of time; therefore, the total AUC for the entire duration of CGM use was divided by the number of 24-hour periods of data collection. We called these normalized values "AUC-110," "AUC-120," "AUC-130," "AUC-140," and "AUC-180," and they reflect both the magnitude and duration of hyperglycemic excursions above the predetermined thresholds in an average 24-hour period. Birth weight percentile was determined using birth weight data derived from 1999 and 2000 United States Natality datasets. The correlation coefficient (r) was calculated between birth weight percentiles and each of the following: AUC-110, AUC-120, AUC-130, AUC-140, AUC-180, and 1-hour GCT result.
CGM measured 7 days at beginning of pregnancy,birth weight measured a time of delivery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Pregnancy and Delivery Characteristics for Participants With AUC-130 <= 22,000 and AUC-130 > 22,000
Tidsramme: CGM measured 7 days at beginning of pregnancy,birth weight measured a time of delivery

For our secondary outcome analyses,we chose to focus on AUC-130 because 130 mg/dL is a common threshold used when treating gestational diabetics. In addition, 130 mg/dL was the threshold used in an earlier pilot study performed at our institution because it had the best correlation with birth weight percentile.

Secondary outcomes were compared between these two groups using the chi-square test. Data were analyzed using Stata 11.2. AUC-130 values were divided into "high" and "low" at a cutoff of 22,000, which was the 90th percentile of AUC-130 values.
CGM measured 7 days at beginning of pregnancy,birth weight measured a time of delivery

Samarbejdspartnere og efterforskere

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

Sponsor

Stanford University

Samarbejdspartnere

DexCom, Inc.

Efterforskere

  • Ledende efterforsker: Yasser Yehia El-Sayed, Stanford University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

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

1. februar 2009

Primær færdiggørelse (Faktiske)

1. juli 2014

Studieafslutning (Faktiske)

1. september 2015

Datoer for studieregistrering

Først indsendt

20. februar 2009

Først indsendt, der opfyldte QC-kriterier

20. februar 2009

Først opslået (Skøn)

24. februar 2009

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

19. maj 2016

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

13. april 2016

Sidst verificeret

1. april 2016

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • SU-02052009-1738
  • IRB #12335 (Anden identifikator: Stanford University Medical Center IRB)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Diabetes, svangerskabssyge

Kliniske forsøg med The Seven Continuous Glucose Monitoring System

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