Metformin Postpartum for GDM

Overview[ - collapse ][ - ]

Purpose The purpose of this study is to determine whether the study drug metformin is helpful in reducing weight after pregnancy in women with gestational diabetes. This pilot study will provide information on how well women are able to take metformin postpartum, whether metformin increases weight loss, and whether there are any increased risks of side effects to you as a new mother.
ConditionDiabetes, Gestational
InterventionDrug: Metformin
Drug: Placebo
PhasePhase 4
SponsorThe University of Texas Health Science Center, Houston
Responsible PartyThe University of Texas Health Science Center, Houston
ClinicalTrials.gov IdentifierNCT01280409
First ReceivedJanuary 19, 2011
Last UpdatedMay 18, 2011
Last verifiedMay 2011

Tracking Information[ + expand ][ + ]

First Received DateJanuary 19, 2011
Last Updated DateMay 18, 2011
Start DateJanuary 2011
Estimated Primary Completion DateApril 2013
Current Primary Outcome MeasuresWeight Change [Time Frame: At 6 weeks postpartum visit (2nd research visit)] [Designated as safety issue: No]The weight change in kilograms defined as:
weight change = Weight(pp) - Weight(6wk)
Current Secondary Outcome Measures
  • Achievement of pre-pregnancy weight [Time Frame: At 6 weeks postpartum] [Designated as safety issue: No]We will calculate the percentage of women that achieve their self-reported pre-pregnancy weight.
  • Ideal Body weight [Time Frame: At 6 weeks postpartum] [Designated as safety issue: No]We will calculate the percentage of women that achieve their ideal body weight.
  • Hemoglobin a1c [Time Frame: At 6 weeks postpartum] [Designated as safety issue: No]We will calculate the change in hemoglobin a1c.
  • HDL, LDL, triglyceride [Time Frame: At 6 weeks postpartum] [Designated as safety issue: No]We will calculate the change in LDL, HDL, and triglyceride levels.
  • Satisfaction Survey [Time Frame: At 6 weeks postpartum] [Designated as safety issue: No]Results of the satisfaction survey will be analyzed.

Descriptive Information[ + expand ][ + ]

Brief TitleMetformin Postpartum for GDM
Official TitleThe Effects of Metformin on Retained Postpartum Weight in Women With Gestational Diabetes: A Randomized, Placebo-Controlled Trial
Brief Summary
The purpose of this study is to determine whether the study drug metformin is helpful in
reducing weight after pregnancy in women with gestational diabetes. This pilot study will
provide information on how well women are able to take metformin postpartum, whether
metformin increases weight loss, and whether there are any increased risks of side effects
to you as a new mother.
Detailed Description
At 24-48 hours after delivery, women who are eligible for participation will be approached
and consented to the study. Maternal weight will be measured and 20ml of maternal blood
will be obtained to assess glucose control and lipid profile. Women will be counseled
regarding diet, exercise and glucose control. Data including maternal demographics, clinical
characteristics and neonatal outcomes will be collected. At 3 weeks postpartum, a research
nurse will contact the subject via telephone call to inquire about adverse or side effects,
ability to take the prescribed medication (metformin or placebo), and to answer questions
about the study. At 6 weeks postpartum, maternal weight will be measured , blood will be
obtained and side effects will be evaluated again. Finally, a satisfaction survey will be
completed.
Study TypeInterventional
Study PhasePhase 4
Study DesignAllocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
ConditionDiabetes, Gestational
InterventionDrug: Metformin
Subjects will receive metformin 850 mg PO daily for 7 days, then metformin 850mg PO twice a day for the next 5 weeks
Drug: Placebo
Subjects will receive a placebo (similar in size, taste, color) once daily for 7 days, then twice daily for the next 5 weeks.
Study Arm (s)
  • Placebo Comparator: Placebo
  • Experimental: Metformin

Recruitment Information[ + expand ][ + ]

Recruitment StatusRecruiting
Estimated Enrollment80
Estimated Completion DateApril 2013
Estimated Primary Completion DateFebruary 2013
Eligibility Criteria
Inclusion Criteria:

- Postpartum women with a delivery greater than 34 weeks of pregnancy

- Between the ages of 18 to 49 years

- Women with a diagnosis of gestational diabetes mellitus (either treated with insulin,
oral hypoglycemic agent or diet-controlled) after 24 weeks in most recent pregnancy
based on a confirmatory 3 hour glucola test (based on either the Carpenter and
Coustan's of the Diabetes Task Force criteria)

Exclusion Criteria:

- women with pre-gestational diabetes mellitus (either Type I or Type II DM)

- women unable to tolerate metformin based on patient history

- women who will be discharged hom eon insulin or oral hypoglycemic agent in the
immediate postpartum period

- women with a BMI <25 kg/m²
GenderFemale
Ages18 Years
Accepts Healthy VolunteersNo
ContactsContact: Jerrie S Refuerzo, MD
713.500.6416
Jerrie.S.Refuerzo@uth.tmc.edu
Location CountriesUnited States

Administrative Information[ + expand ][ + ]

NCT Number NCT01280409
Other Study ID NumbersHSC-MS-10-0426
Has Data Monitoring CommitteeNo
Information Provided ByThe University of Texas Health Science Center, Houston
Study SponsorThe University of Texas Health Science Center, Houston
CollaboratorsLarry C. Gilstrap, MD Center for Perinatal and Women's Health Research
Investigators Principal Investigator: Jerrie S Refuerzo, MD The University of Texas Health Science Center, Houston
Verification DateMay 2011

Locations[ + expand ][ + ]

Memorial Hermann Hospital, Texas Medical Center
Houston, Texas, United States, 77030
Contact: Jerrie S Refuerzo, MD | 713-500-6416 | Jerrie.S.Refuerzo@uth.tmc.edu
Recruiting
University of Texas Health Science Center at Houston, Professional Building
Houston, Texas, United States, 77030
Contact: Jerrie S Refuerzo, MD | 713-500-6416 | Jerrie.S.Refuerzo@uth.tmc.edu
Recruiting