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Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
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Gestational diabetes diagnostic methods (GD2M) pilot randomized trial.

Christina M Scifres1, Kaleab Z Abebe, Kelley A Jones

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This study found that pregnant women can be successfully recruited into a blinded trial comparing gestational diabetes (GDM) screening methods. Both patients and providers value GDM screening, with women preferring the 2-hour test.

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Area of Science:

  • Obstetrics and Gynecology
  • Endocrinology
  • Clinical Trial Design

Background:

  • Gestational diabetes mellitus (GDM) diagnosis relies on specific screening criteria.
  • Comparing diagnostic criteria like International Association of Diabetes in Pregnancy Study Groups (IADPSG) and Carpenter-Coustan is crucial for optimal patient management.
  • Understanding patient and provider perspectives is essential for effective implementation of GDM screening protocols.

Purpose of the Study:

  • To assess the feasibility of a pragmatic randomized controlled trial (RCT) comparing IADPSG versus Carpenter-Coustan criteria for GDM diagnosis.
  • To explore pregnant women's and healthcare providers' views on GDM screening methods.

Main Methods:

  • A single-blinded, pragmatic pilot RCT was conducted.
  • Participants (24-28 weeks gestation) underwent a 50g oral glucose challenge test.
  • Eligible participants were randomized to either a 2-hour 75g OGTT (IADPSG) or a 3-hour 100g OGTT (Carpenter-Coustan).

Main Results:

  • Recruitment feasibility was high, with 69% of eligible women randomized.
  • Key challenges identified by participants included glucose drink tolerance, fasting, and blood draw procedures.
  • Women generally preferred the 2-hour OGTT or doctor-recommended tests; providers were comfortable with blinding.

Conclusions:

  • A blinded, randomized GDM screening trial is feasible with minimal attrition.
  • Pregnant women and healthcare providers value GDM screening.
  • Patient preferences lean towards shorter testing protocols, such as the 2-hour OGTT.