- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01540396
Gestational Diabetes Diagnostic Methods (GD2M)
GD2M Study:Gestational Diabetes Diagnostic Methods
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a pilot feasibility study of 40 pregnant women between 24-28 weeks gestation to test the investigators recruitment, enrollment and randomization procedures in preparation to conduct a larger randomized control trial to compare diagnostic methods for gestational diabetes.
Forty women 18 years of age or older will be recruited at 20-24 weeks pregnancy from the ob/gyn outpatient practices at Magee-Women's hospital (MWH). Eligible women will return to MWH main lab between 24-28 weeks gestation for the routine 1 hour 50gm glucose challenge test. Women with blood glucose values less than 200 will be randomized to receive either the fasting 2 hour 75 gm oral glucose tolerance test (OGTT)or the 3 hour 100 gm OGGT within two weeks. Gestational diabetes will be determined for the 2 hour 75 gm OGGT arm based on the 2011 ADA guidelines and the 3 hour 100 gm OGGT arm based on the Carpenter and Coustan criteria. Patients and their providers will be informed of the diagnosis of gestational diabetes, but they will be blinded to the criteria used to make the diagnosis as well as the specific results of glucose tolerance testing.
Chart reviews will be conducted to assess for perinatal maternal and infant health factors (e.g.pregnancy weight, gestational weight gain, co morbidities) as well as for data on perinatal outcomes related to GDM such as macrosomia, c-sections, and birth trauma. Two brief self-administered questionnaire will assess participants' views on screening for gestational diabetes and assess participants experience with and solicit feedback on the study procedures.
At the end of this pilot study, the investigators will have experience with recruitment, retention, and randomization procedures and have made the necessary protocol revisions. If successful, this feasibility study will provide the preliminary data and feasibility justification needed to conduct a larger randomized control trial to compare the effectiveness of two diagnostic methods for gestational diabetes.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Pennsylvania
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Pittsburgh, Pennsylvania, United States, 15213
- Magee-Womens Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Singleton pregnancy
- Plan to undergo gestational diabetes screening at 24-28 weeks' gestation.
Exclusion Criteria:
- Existing Type 1 or Type 2 diabetes
- Diabetes diagnosed early in pregnancy (less than 24 weeks gestation)
- Multiple gestation (e.g. twins, triplets)
- Chronic hypertension (requiring medications)
- Oral, IM or IV corticosteroid use within the previous 30 days
- Major congenital anomaly or anticipated preterm delivery before 28 weeks
- Inability to complete 50 gram GCT before 28 completed weeks' gestation
- Patients with known HIV, Hepatitis B or C virus.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: 75 Gram OGTT
The 2011 ADA criteria will be used to diagnose gestational diabetes in this study arm.
|
Patients diagnosed with gestational diabetes will receive dietary advice and instruction on blood glucose monitoring from their regular prenatal doctors, consistent with standard of care practices.
Medications (glyburide, insulin) will be used as needed to assist with blood glucose control.
|
Active Comparator: 100 gram OGTT
A 2 step approach to the diagnosis of gestational diabetes will be used in this arm.
Patients who have a 50 gram, 1 hour glucose challenge test result greater than 135 mg/dL will be diagnosed with gestational diabetes if their 3 hour, 100 gram OGTT results exceed the diagnostic threshold recommended by Carpenter and Coustan.
|
Patients diagnosed with gestational diabetes will receive dietary advice and instruction on blood glucose monitoring from their regular prenatal doctors, consistent with standard of care practices.
Medications (glyburide, insulin) will be used as needed to assist with blood glucose control.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Macrosomia
Time Frame: Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Defined as birthweight >90th percentile for gestational age or birthweight >4000 grams
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Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Cesarean delivery
Time Frame: Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Primary or repeat cesarean delivery
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Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Diagnosis of gestational diabetes
Time Frame: Will be followed from study enrollment until delivery (approximately 40 weeks' gestation)
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Assess how frequently a diagnosis of gestational diabetes is made
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Will be followed from study enrollment until delivery (approximately 40 weeks' gestation)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Pre-eclampsia or gestational hypertension
Time Frame: Will be assessed from study enrollment until 30 days after delivery
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New onset hypertension +/- proteinuria
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Will be assessed from study enrollment until 30 days after delivery
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Neonatal hypoglycemia
Time Frame: First 24 hours of life
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Defined as blood glucose less than 80 mg/dL from heel stick within 1 hour after delivery
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First 24 hours of life
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Neonatal hyperbilirubinemia
Time Frame: First 7 days of life
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Defined as bilirubin greater than 5 mg/dL over 24 hours from heel stick
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First 7 days of life
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Infant birth trauma
Time Frame: Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Defined as shoulder dystocia/brachial plexus injuries
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Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Maternal birth trauma
Time Frame: Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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3rd or 4th degree perineal laceration or postpartum hemorrhage
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Will be assessed from study enrollment until delivery (approximtaly 40 weeks' gestation)
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Christina M Scifres, MD, University of Pittsburgh
- Principal Investigator: Esa Davis, MD MPH, University of Pittsburgh
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- PRO11080682
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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