Closed-loop Insulin Delivery In Type 1 Diabetes Pregnancies (CIRCUIT)
Type 1 Diabetes MellitusPregnancy Related3 moreThis trial will assess the efficacy of the Tandem t:slim X2 insulin pump with Control IQ technology compared with standard insulin delivery plus CGM in pregnant women with type 1 diabetes.
The Impact of Glycemic Index Education on Lowering Dietary GI in Gestational Diabetes Mellitus
Gestational Diabetes MellitusGestational Diabetes Mellitus (GDM) incidence is increasing worldwide, and within Canada, the Atlantic provinces statistically have been found to have highest prevalence of diabetes. Increasing evidence supports the benefit of following a low glycaemic index (GI) diet in GDM and the Canadian Diabetes Guidelines recommends replacing high GI foods for low GI foods. Despite recommendation to adapt a low GI diet in GDM, there are limitations and barriers recognized to GI utility largely focused on knowledge translation. There is sufficient research to support a low GI diet in benefiting outcomes of GDM, therefore the GI in GDM Online trial will investigate the feasibility and effectiveness of a distance low GI education intervention, adapted from Diabetes Canada's GI materials, on producing a difference in average dietary GI between a group with the intervention and standard care.
Pregnancy Outcomes: Effects of Metformin Study (POEM Study)
Gestational DiabetesInsulin ResistanceOne approach to prevent the rising burden of diabetes is to address the issue of gestational diabetes mellitus (GDM). GDM has a growing prevalence up to 5-10% (and even higher in specific subgroups), with a pregnant population becoming older and more obese worldwide. GDM increases the risks of complications during pregnancy, at delivery and on the longer term, like type 2 diabetes (T2D) and persistent obesity, in mother and child. Moreover, insulin added to diet as the standard care for GDM has disadvantages for mother (maintenance of hyperinsulinaemia, increasing weight and blood pressure) and child (macrosomia, hypoglycaemia) with related adverse pregnancy outcomes. Metformin, as an insulin sensitizer targeting the cause of GDM, may have essential benefits, as suggested by observational studies. However, RCTs with metformin (early positioned in the treatment of GDM) are still lacking. The POEM study is the first Randomized controlled trial (RCT) in GDM to test the hypothesis that metformin, early given from the start of the diagnosis GDM, on top of diet and lifestyle improves clinically relevant pregnancy outcomes in mother and child during pregnancy, at delivery and on the longer term - up to 20 years after birth.
Study of Pregnancy And Neonatal Health (SPAN)
Gestational Diabetes MellitusThis study will conduct a randomized trial among women with gestational diabetes (GDM). Study of Pregnancy And Neonatal health (SPAN), TIMing of dElivery (TIME) is a randomized trial that will recruit up to 3,450 pregnant women with uncontrolled GDM and randomize the timing of their delivery. Women with GDM who are approached for the trial and are found eligible but do not consent to participating in randomization for delivery will be asked to consent for chart review only (estimated additional n=3,000). The primary objective is to determine the best time to initiate delivery for GDM-complicated deliveries (defined as the time when risk of illness and death for the newborn is the lowest) between 37-39 weeks.
Glycemic Targets for Pregnant Women With GDM and T2DM
Diabetes Mellitus in PregnancyDiabetes3 moreThe purpose of this randomized clinical trial is to determine whether glycemic targets that are lower than those currently recommended by the American Diabetes Association (ADA) and the American College of Obstetricians and Gynecologists (ACOG) would improve overall outcomes in pregnant patients with diabetes. Eligible pregnant women with a diagnosis of gestational diabetes or Type 2 diabetes will be randomized into either routine care with glycemic targets as currently recommended by ADA and ACOG (control arm), or more aggressive care with lower glycemic targets that more closely resemble normoglycemia in pregnancy (intervention arm). The glycemic targets for the control arm will be defined as follows: fasting ≤95 mg/dL, pre-prandial ≤95 mg/dL, and 1-hour postprandial ≤140 mg/dL. The glycemic targets for the intervention arm will be defined as follows: fasting ≤80 mg/dL, pre-prandial ≤80 mg/dL, and 1-hour postprandial ≤110 mg/dL. The primary outcome will be a 250-gram difference in birth weight between the two study arms. Secondary maternal and neonatal outcomes of interest will also be compared between the two study arms.
Metabolic Analysis for Treatment Choice in Gestational Diabetes Mellitus
Gestational DiabetesDiabetes2 moreGestational diabetes (GDM) is a significant clinical and public health burden, affecting over 400,000 pregnant women in the United States each year. Without adequate treatment, women with GDM and their infants are at risk for substantial morbidity. Because of this, experts recommend treatment focused on normalization of hyperglycemia to improve outcomes. However, providers have limited capacity to predict which treatment will achieve glycemic goals. This results in a choice based on provider and patient preference and a trial and error approach, which can create delays in glycemic control within the short (8-10 weeks) window between diagnosis and delivery. Maternal and fetal morbidity may be related to a mismatch between glycemic pathophysiology and the mechanism of action of glucose-lowering agents. In fact, GDM is heterogeneous, with predominant insulin resistance (IR) in 50%, insulin secretion deficit (ISD) in 30%, and a combination of both in 20% of women as underlying mechanisms of hyperglycemia. This variation in GDM pathophysiology and clinical outcomes supports the use of an individualized treatment approach. The overall goal of this project is to investigate an individualized treatment approach for GDM where treatment is based on each woman's GDM mechanism. The study will employ the same treatment in both arms, but choice of treatment will differ based on study arm (matched or unmatched to GDM mechanism).
mHealth Smartphone App and Postpartum Glucose Intolerance for Patients With GDM
Gestational DiabetesPreDiabetes3 moreWithout intervention, approximately 70% of women diagnosed with GDM will develop type 2 diabetes mellitus in their lifetime. Abnormal results of a 2 hour oral glucose tolerance test (OGTT) performed as early as 2 days postpartum are predictive of impaired glucose tolerance 1 year postpartum. The investigators hypothesize that use of the Malama smartphone application to optimize antenatal glycemic control will result in lower incidence of postpartum glucose intolerance, which may decrease long term risk of progression to diabetes mellitus.
Mobile Health App to Reduce Diabetes in Latina Women With Prior Gestational Diabetes II
Gestational Diabetes MellitusThe investigators will conduct a pre-post study to evaluate the effectiveness of the Hola Bebe intervention on improving self-efficacy for healthy eating and physical activity, and on weight loss among Hispanic women with recent GDM. The Hola Bebe app provides a unique opportunity to provide an effective, culturally tailored lifestyle modification program. The investigators will provide training to health educators at the two participating sites to ensure consistency and fidelity of implementation.
MYPP-trial: Myo-inositol Supplementation to Prevent Pregnancy Complications in Women With Polycystic...
Gestational Diabetes MellitusPreeclampsia2 morePolycystic Ovary Syndrome (PCOS) is the most common endocrine disorder in women of reproductive age. PCOS is a heterogeneous condition, characterised by metabolic disturbances, insulin resistance and hyperandrogenism. Pregnancies in women with PCOS have an increased risk of gestational diabetes mellitus, preeclampsia and preterm birth, and their offspring have an increased risk of aberrant birth weight and hospitalization. After pregnancy, PCOS is thought to have an impact on breastfeeding success and breastmilk composition. Current strategies to improve pregnancy outcome among women with PCOS have not demonstrated significant risk reduction. Myo-inositol is a commonly used dietary supplement with a favourable effect on glucose metabolism and insulin sensitivity. Optimal intake of myo-inositol is associated with a decrease in glucose, lower insulin and lower testosterone levels in women with PCOS. Among women with PCOS-related disorders (e.g. in women with obesity), myo-inositol supplementation in pregnancy has been shown to have clinical benefits in preventing adverse pregnancy outcomes in a number of clinical trials, by reducing the risk of gestational diabetes mellitus, hypertensive complications and preterm birth. The MYPP-trial will be the first randomised prospective trial aimed specifically at pregnant women with PCOS, to evaluate the potential effectiveness of myo-inositol supplementation as a nutritional intervention to prevent all three pregnancy complications associated with PCOS (i.e. GDM, preeclampsia and preterm birth). Secondary objectives are to evaluate the impact of supplementation on maternal (mental) and neonatal health, breastfeeding practices and breastmilk composition. In addition, a full cost-effectiveness analysis will be performed. Women with a diagnosis of PCOS and a singleton pregnancy between 8+0 and 16+0 weeks of gestational age are eligible. Participants randomly allocated to the intervention group will receive 4 grams myo-inositol added to their routinely recommended folic acid supplement, divided over two daily sachets of sugary powder throughout pregnancy. The control group will receive similar looking sachets of supplements containing only the standard dose of folic acid without the added myo-inositol supplement, as part of the current standard-of-care recommendation. In addition to receiving supplements, participants will be asked to complete three questionnaires, provide blood and urine samples once each trimester of pregnancy, and routine ultrasound scanning will be performed to assess fetal growth. All study visits will be aligned with routine antenatal care appointments. Additionally, subjects can choose to participate in research on the impact of myo-inositol supplementation on breastfeeding and take part in the MYPP biobank. The results of this study will provide important novel recommendations for PCOS patients on the importance of optimising life-style and nutrient intake to improve pregnancy outcome.
Vitamin D Supplementation for the Prevention of GDM
Vitamin DGestational DiabetesThis study was a double-blind multicenter randomized controlled study.