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  • HSU, SARAH  (3)
  • 1
    In: Diabetes, American Diabetes Association, Vol. 71, No. Supplement_1 ( 2022-06-01)
    Abstract: Background: Treatment of gestational diabetes (GDM) reduces the risk of large for gestational age (LGA) birthweight and associated complications in infants. Pregnant people with gestational glucose intolerance (GGI, abnormal glucose loading test (GLT) without GDM) usually remain untreated. We examined the risk of LGA among women with GGI in a large cohort. Methods: In a retrospective cohort study of 44,628 singleton pregnancies delivered at an academic center at & gt;28 weeks' gestation, pregnancies with a GLT & gt;140 mg/dl and either a normal 3-hour 100-gram oral glucose tolerance test (OGTT) or one abnormal OGTT value were classified as GGI, and those with 2 abnormal OGTT values as GDM. We used generalized estimating equations for logistic regression to examine the risk of LGA (birthweight & gt;90th percentile for gestational age) in GGI versus normal glucose tolerance (NGT, GLT & lt;140 mg/dl) pregnancies after adjustment for age, gender, 1st trimester BMI, parity, insurance, race/ethnicity, and marital status. A second model adjusted for gestational weight gain (GWG) . Results: LGA was present in 7.7% of 36,964 pregnancies with NGT, 9.6% of 4357 with GGI and normal OGTT, 14.3% of 15with GGI and one abnormal OGTT value, and 14.5% of 1800 with GDM. The odds of LGA were higher in GGI than NGT pregnancies (adjusted OR 1.4 [1.3-1.5], p & lt;0.001) . When compared separately with NGT, both types of GGI had elevated odds of LGA: normal OGTT adjusted OR 1.2 [1.1-1.4], p & lt;0.001, one abnormal OGTT value adjusted OR 1.8 [1.5-2.1], p & lt;0.001. The latter was similar to that in GDM compared to NGT: adjusted OR 1.8 [1.5-2.0], p & lt;0.001. Increased odds of LGA were also present for GGI/GDM groups after GWG adjustment: normal OGTT OR 1.3 [1.2-1.5] p & lt;0.001, 1 abnormal OGTT value OR 1.8 [1.5-2.1] p & lt;0.0GDM OR 2.2 [1.9-2.5] p & lt;0.001. Conclusion: Infants of untreated people with GGI have increased risk of LGA birthweight. The risk of LGA in GGI pregnancies with one abnormal OGTT value was similar to that in GDM in a clinical setting where only GDM was treated. Disclosure J.Maya: None. D.J.Selen: None. T.Thaweethai: None. S.Hsu: None. C.Yu: None. K.James: None. A.Kaimal: None. M.Hivert: Advisory Panel; American Heart Association, Research Support; American Diabetes Association. C.E.Powe: None. Funding MGH (Physician Scientist Development Award and Claflin Distinguished Scholar's Award)
    Type of Medium: Online Resource
    ISSN: 0012-1797
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2022
    detail.hit.zdb_id: 1501252-9
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  • 2
    In: Diabetes, American Diabetes Association, Vol. 71, No. Supplement_1 ( 2022-06-01)
    Abstract: Background: Gestational glucose intolerance (GGI, abnormal initial gestational diabetes [GDM] screen) conveys an increased risk of future diabetes (DM) , even when GDM criteria is not met. We previously defined subtypes of GGI/GDM according to the underlying mechanism leading to hyperglycemia (insulin resistance vs. deficiency) . We aimed to determine if GGI subtypes are at differential risk for future prediabetes/DM; we hypothesized increased risk with insulin deficient subtypes. Methods: We defined GGI as glucose loading test 1-hr glucose ≥ 140 mg/dL at & gt; 22 weeks’ gestation. We applied homeostasis model assessment (HOMA) to fasting glucose and insulin at 16-20 weeks’ gestation and classified pregnancies with GGI without GDM into subtypes according to the presence of insulin resistance and/or deficiency. We used Cox proportional-hazards models with time-varying exposures to assess risk of preDM/DM (HbA1c ≥ 5.7% at ≥ 3 months after delivery) in each GGI subtype compared to pregnancies with normal glucose tolerance after adjustment for age, race/ethnicity, health insurance, and first trimester BMI. Women were censored at the time of last HbA1c or GDM diagnosis. Results: Of 671 women with a median 9.9 years of follow-up, 29% (n=196) developed preDM/DM. Among pregnancies in 113 women with GGI, 54% had the insulin resistant subtype (IR) , 25% had the insulin deficient subtype (ID) , and 16% had the mixed pathophysiology subtype (MP) . Subtypes with insulin deficiency (ID + MP) and insulin resistance (IR) were both associated with increased risk of preDM/DM (ID + MP hazard ratio [HR]=1.8 [1.1-2.9] , p=0.02 and IR HR=1.7 [1.1-2.6], p=0.01) . Each insulin deficient subtype also appeared to carry increased risk: ID HR=1.7 (0.9-3.1, p=0.12) and MP HR=2.1 (1.0-4.2, p=0.048) . Conclusions: GGI confers an increased risk of future prediabetes/DM, regardless of the mechanism leading to glucose intolerance. A combination of insulin resistance and deficiency may convey the highest risk of future prediabetes/DM. Disclosure D.J. Selen: None. T. Thaweethai: None. K. James: None. J.L. Ecker: None. J.B. Meigs: Consultant; Quest Diagnostics. C.E. Powe: None. Funding National Institutes of Health (T32DK007028) , Massachusetts General Hospital (Physician Scientist Development Award and Claflin Distinguished Scholar’s Award)
    Type of Medium: Online Resource
    ISSN: 0012-1797
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2022
    detail.hit.zdb_id: 1501252-9
    Location Call Number Limitation Availability
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  • 3
    In: Diabetes, American Diabetes Association, Vol. 70, No. Supplement_1 ( 2021-06-01)
    Abstract: Background: Women with gestational diabetes (GDM) have an increased risk of adverse perinatal outcomes and future type 2 diabetes (T2D). Gestational glucose intolerance (GGI, abnormal initial GDM screen) without GDM has been linked to adverse perinatal outcomes but is not a recognized T2D risk factor. We tested whether GGI without GDM is associated with incident T2D. Methods: Using clinical data from women seen at our US medical center for prenatal and primary care (1998-2018), we assessed risk of T2D (defined using validated laboratory and outpatient diagnoses) according to GGI/GDM status during pregnancy. We defined GGI as 1-hr glucose loading test (GLT) ≥ 140 mg/dl at ≥ 24 weeks gestation. We subcategorized GGI by 3-hr oral glucose tolerance test (OGTT) result. We used Cox proportional-hazard models with time-varying exposures/covariates to assess T2D risk after delivery, adjusting for age, race/ethnicity, parity, insurance type, marital status, BMI, and blood pressure. Women were followed from 1st delivery until diagnosed with T2D or censored at time of last primary care visit. Results: Among 13988 women, 17109 pregnancies had normal glucose tolerance (NGT, GLT & lt; 140mg/dL). Among 3619 GGI pregnancies (GLT ≥ 140 mg/dl), 2076 had a normal OGTT, 699 had 1 abnormal OGTT value, and 844 had GDM (≥ 2 abnormal OGTT values). Over a median of 8.3 years of follow-up, 2.2% (N=304 women) developed T2D. In our primary comparison, women with GGI without GDM (16% of pregnancies) had increased T2D risk compared to women with NGT (HR 2.1 [1.5-2.9], p & lt;0.001). Among women with GGI, T2D risk increased with the number of abnormal OGTT values (normal OGTT: HR 1.8; 1 abnormal OGTT value: HR 2.8; GDM: HR 11.7; p≤0.01 for all compared to NGT). Conclusions: Pregnant women with GGI without GDM have a two-fold increased risk of future T2D compared to those with NGT. Clinical data universally available during pregnancy identifies a large, previously unrecognized group of women who may benefit from T2D screening and prevention. Disclosure D. J. Selen: None. T. Thaweethai: None. S. Hsu: None. K. James: None. A. Kaimal: None. J. B. Meigs: Consultant; Self; Quest Diagnostics. C. E. Powe: None. Funding National Institutes of Health (2T32DK007028-46, K23DK113218); Robert Wood Johnson Foundation; Massachusetts General Hospital
    Type of Medium: Online Resource
    ISSN: 0012-1797 , 1939-327X
    Language: English
    Publisher: American Diabetes Association
    Publication Date: 2021
    detail.hit.zdb_id: 1501252-9
    Location Call Number Limitation Availability
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