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Closed-Loop Control in Young Children 5-8 Years Old Using DiAs Platform

22. juni 2017 opdateret af: Mark DeBoer, MD, University of Virginia
The overall aim of this proposed research is to determine the safety, feasibility and efficacy (AP vs at home use of SAP) of the Diabetes Assistant (DiAs) controller in day and night closed-loop control in young children 5-8 years old with type 1 diabetes over multiple 48 hours in an out-patient setting.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Young children with Type 1 Diabetes (T1D) in the age range of 5-8 years old are a population with clear needs but unique challenges regarding the application of artificial pancreas (AP) technologies. Young children are likely to benefit from an AP system, with current deficits in glycemic control that include both significant hypoglycemia and sub-optimal HbA1c levels; however, they have undeveloped abilities to control and interact with the AP system, posing potential safety issues. During the hours that these children are away from their parents at school and elsewhere, they lack the sophistication to operate the currently-available tools in an AP system--and may induce harm if they are allowed to do so, causing parental resistance to AP use. Commercially-available insulin pumps have mechanisms to lock access to children to prevent inappropriate insulin-delivery. However, the AP is more complex than an insulin pump, both in requiring more detailed setting information (that a child could adversely alter) and in providing alerts for impending low- and high-blood glucose (BG) levels (that one wouldn't want to lock out to child use). These functions are all run via a platform on a smart phone-a device with which young children may already feel a high degree of familiarity and thus be more likely to attempt to explore and potentially change settings. It is likely that young children will benefit the most from a system that gives them access to some AP features but provides access to other features only for their parents. In this sense, young children require a device that is not user-centered as much as family-centered. A redesign of the system to provide appropriate access to AP tools-in which certain users can obtain access to certain functionalities-is direly needed before children in this age range can benefit from the improvements in blood glucose (BG) control that the AP has to offer.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

12

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • Virginia
      • Charlottesville, Virginia, Forenede Stater, 22903
        • University of Virginia Center for Diabetes Technology

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

5 år til 9 år (Barn)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Clinical diagnosis of type 1 diabetes,

    • The diagnosis of type 1 diabetes is based on the investigator's judgment
    • C peptide levels and antibody determinations are not required
  • Daily insulin therapy for ≥ 12 months
  • Insulin pump therapy for ≥ 3 months
  • Age ≥5 - ≤8 years old
  • Avoidance of acetaminophen-containing medications (i.e. Tylenol) while wearing the continuous glucose monitor.
  • Willingness to wear a continuous glucose sensor and physiological monitor for the duration of the study

Exclusion Criteria:

The presence of any of the following is an exclusion for the study:

  • Diabetic ketoacidosis in the past month
  • Hypoglycemic seizure or loss of consciousness in the past 3 months
  • History of seizure disorder (except for hypoglycemic seizure)
  • History of any heart disease including coronary artery disease, heart failure, or arrhythmias
  • Cystic fibrosis
  • Current use of oral glucocorticoids, beta-blockers or other medications, which in the judgment of the investigator would be a contraindication to participation in the study.
  • History of ongoing renal disease (other than microalbuminuria).
  • Subjects requiring intermediate or long-acting insulin (such as NPH, Detemir or Glargine).
  • Subjects requiring other anti-diabetic medications other than insulin (oral or injectable).
  • Presence of a febrile illness within 24 hours of admission or acetaminophen use while wearing the CGM. The subject may be rescheduled for Research House/Hotel Admission if these criteria are not met. The study subject will not participate in the trial if these conditions are met.

  • Medical or psychiatric condition that in the judgment of the investigator might interfere with the completion of the protocol such as:

    • Inpatient psychiatric treatment in the past 6 months
    • Uncontrolled adrenal insufficiency

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

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

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Group A
In this randomized, cross-over study, the intervention involves blood glucose control using a Closed Loop system run by the Diabetes Assistant (DiAs) during a stay at a Research House/Hotel. All subjects will have blood glucose data compared between their usual diabetes care (at home, using home insulin pump) and this Closed-Loop care (at Research House/Hotel using the DiAs system). Subjects who are randomized to Group A will have home care evaluated before the Research House/Hotel admission. Subjects in this arm will participate in CGM training and data collection prior to the Research House/Hotel admission.
Enhed: Diabetes Assistant (DiAs) with Closed-Loop
All subjects will use DiAs Medical Platform, a study insulin pump and continuous glucose monitor (CGM) in closed-loop mode during a Research House/Hotel admission that will last up to 72 hours.
Eksperimentel: Group B
Group B is identical to Group A with the exception that usual diabetes care (at home, using home insulin pump) will be evaluated after the Research House/Hotel admission. Subjects who are randomized to Group B will participate in CGM training and data collection after the Research House/Hotel admission. As with Group A, all subjects will use Diabetes Assistant (DiAs) with Closed-Loop during the admission.
Enhed: Diabetes Assistant (DiAs) with Closed-Loop
All subjects will use DiAs Medical Platform, a study insulin pump and continuous glucose monitor (CGM) in closed-loop mode during a Research House/Hotel admission that will last up to 72 hours.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Percent of Sensor Glucose Readings Between 70-180 mg/dL
Tidsramme: 68 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
68 hours

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Percent of Time Sensor Glucose Readings Are <70 mg/dL
Tidsramme: 68 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
68 hours
Percent of Time Sensor Glucose Readings Are >150 mg/dL
Tidsramme: 72 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Percent of Time Sensor Glucose Readings Are >180 mg/dL
Tidsramme: 68 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
68 hours
Percent of Time Sensor Glucose Readings Are >250 mg/dL
Tidsramme: 68 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
68 hours
Percent of Time Sensor Glucose Readings Are >400 mg/dL
Tidsramme: 72 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Distribution of Sensor and Meter Glucose Values (Maximum, Minimum, Median, Interquartile Range, Mean, Standard Deviation)
Tidsramme: 72 hours
All subjects have CGM and handheld glucose meter output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Distribution of Sensor and Meter Glucose Values (Maximum)
Tidsramme: 72 hours
All subjects have CGM and handheld glucose meter output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Distribution of Sensor and Meter Glucose Values (Minimum)
Tidsramme: 72 hours
All subjects have CGM and handheld glucose meter output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Distribution of Sensor and Meter Glucose Values (Median/Interquartile Range)
Tidsramme: 72 hours
All subjects have CGM and handheld glucose meter output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Mean BG (as Measured by CGM)
Tidsramme: 68 hours
All subjects have CGM and handheld glucose meter output analyzed and compared between time on closed-loop system and time on usual care period.
68 hours
Hypoglycemia Area Under the Curve <60
Tidsramme: 72 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Hypoglycemia Area Under the Curve <70 mg/dL
Tidsramme: 72 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Hyperglycemia Area Under the Curve >180
Tidsramme: 72 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Hyperglycemia Area Under the Curve >250 mg/dL
Tidsramme: 72 hours
All subjects have CGM output analyzed and compared between time on closed-loop system and time on usual care period.
72 hours
Incidence of Hypoglycemia Per Subject, Defined by Handheld Meter Glucose <70 mg/dL
Tidsramme: 68 hours
All subjects have hypoglycemia monitored by meter analysis and compared between time on closed-loop system and time on usual care period.
68 hours
End of Night Blood Glucose
Tidsramme: 72 hours
All subjects have blood glucose evaluated upon rising (approximately 7 am) and compared between time on closed-loop system and time on usual care period.
72 hours

Samarbejdspartnere og efterforskere

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

Sponsor

University of Virginia

Samarbejdspartnere

DexCom, Inc.

Efterforskere

  • Ledende efterforsker: Mark D. DeBoer, MD, University of Virginia, Pediatrics, Endocrinology/Diabetes

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

Hjælpsomme links

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. maj 2016

Primær færdiggørelse (Faktiske)

1. maj 2016

Studieafslutning (Faktiske)

1. maj 2016

Datoer for studieregistrering

Først indsendt

15. april 2016

Først indsendt, der opfyldte QC-kriterier

20. april 2016

Først opslået (Skøn)

25. april 2016

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

24. juli 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

22. juni 2017

Sidst verificeret

1. juni 2017

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 18888

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Not yet determined

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 mellitus, type 1

Kliniske forsøg med Diabetes Assistant (DiAs) with Closed-Loop

Søg i lignende forsøg

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