scholarly journals High probability of false-positive gestational diabetes mellitus diagnosis during early pregnancy

2020 ◽  
Vol 8 (1) ◽  
pp. e001234
Author(s):  
Sayuri Nakanishi ◽  
Shigeru Aoki ◽  
Junko Kasai ◽  
Ryosuke Shindo ◽  
Soichiro Obata ◽  
...  

IntroductionThis study aimed to assess the validity of applying the International Association of Diabetes and Pregnancy Study Group (IADPSG) criteria for the diagnosis of gestational diabetes mellitus (GDM) at any time during pregnancy.Research design and methodsThis multicenter cohort study was conducted at five Japanese facilities from January 2018 to April 2019. The study cohort included women at a high risk of GDM who met one or more of the following IADPSG criteria during early pregnancy: fasting plasma glucose (FPG) ≥92 mg/dL and 75 g oral glucose tolerance test (OGTT) value of ≥180 mg/dL at 1 hour, or ≥153 mg/dL at 2 hour (hereafter early-onset GDM). Women diagnosed with early-onset GDM were followed up without therapeutic intervention and underwent the 75 g OGTT again during 24–28 weeks of gestation. Those exhibiting the GDM patterns on the second 75 g OGTT were diagnosed with true GDM and treated, whereas those exhibiting the normal patterns were diagnosed with false positive early GDM and received no therapeutic intervention.ResultsOf the 146 women diagnosed with early-onset GDM, 69 (47%) had normal 75 g OGTT values at 24–28 weeks of gestation, indicating a false-positive result. FPG levels were significantly higher in the first 75 g-OGTT test than in the second 75 g-OGTT test (93 mg/dL and 87.5 mg/dL, respectively; p<0.001). FPG levels were high in 86 (59%) women with early-onset GDM during early pregnancy but in only 39 (27%) women during mid-pregnancy. Compared with false positive early GDM, true GDM was more frequently associated with adverse pregnancy outcomes.ConclusionsAlthough women with early-onset GDM were followed up without treatment, the results of repeated 75 g OGTT during mid-pregnancy were normal in about 50%. Our data did not support the adoption of IADPSG thresholds for the diagnosis of GDM prior to 20 weeks of gestation.

2012 ◽  
Vol 5 (2) ◽  
pp. 71-77 ◽  
Author(s):  
Mariya V Boyadzhieva ◽  
Iliana Atanasova ◽  
Sabina Zacharieva ◽  
Tsvetalina Tankova ◽  
Violeta Dimitrova

Background To compare current guidelines for diagnosis of gestational diabetes mellitus (GDM) and to identify the ones that are the most relevant for application among pregnant Bulgarian population. Methods A total of 800 pregnant women at high risk for GDM underwent 75 g oral glucose tolerance test between 24 and 28 weeks of gestation as antenatal screening. The results were interpreted and classified according to the guidelines of the International Association of Diabetes and Pregnancy Study Groups (IADPSG), American Diabetes Association (ADA), Australasian Diabetes in Pregnancy Society, Canadian Diabetes Association, European Association for the Study of Diabetes, New Zealand Society for the study of Diabetes and World Health Organization. Results The application of different diagnostic criteria resulted in prevalences of GDM between 10.8% and 31.6%. Using any two sets of criteria, women who were classified differently varied between 0.1% and 21.1% ( P < 0.001).The IADPSG criteria were the most inclusive criteria and resulted in the highest prevalence of GDM. There was a significant difference in the major metabolic parameters between GDM and control groups, regardless of which of the diagnostic criteria applied. GDM diagnosed according to all criteria resulted in increased proportion of delivery by caesarean section (CS). However, only ADA and IADPSG criteria identified both increased macrosomia (odds ratio, 2.36; 2.29) and CS rate. Conclusion The need for GDM screening is indisputable. In our view, the new IADPSG guidelines offer a unique opportunity for a unified national and global approach to GDM.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Min Zhao ◽  
Shuyu Yang ◽  
Tzu Chieh Hung ◽  
Wenjie Zheng ◽  
Xiaojie Su

AbstractGestational diabetes mellitus (GDM) has aroused wide public concern, as it affects approximately 1.8–25.1% of pregnancies worldwide. This study aimed to examine the association of pre-pregnancy demographic parameters and early-pregnancy laboratory biomarkers with later GDM risk, and further to establish a nomogram prediction model. This study is based on the big obstetric data from 10 “AAA” hospitals in Xiamen. GDM was diagnosed according to the International Association of Diabetes and Pregnancy Study Group (IADPSG) criteria. Data are analyzed using Stata (v14.1) and R (v3.5.2). Total 187,432 gestational women free of pre-pregnancy diabetes mellitus were eligible for analysis, including 49,611 women with GDM and 137,821 women without GDM. Irrespective of confounding adjustment, eight independent factors were consistently and significantly associated with GDM, including pre-pregnancy body mass index (BMI), pre-pregnancy intake of folic acid, white cell count, platelet count, alanine transaminase, albumin, direct bilirubin, and creatinine (p < 0.001). Notably, per 3 kg/m2 increment in pre-pregnancy BMI was associated with 22% increased risk [adjusted odds ratio (OR) 1.22, 95% confidence interval (CI) 1.21–1.24, p < 0.001], and pre-pregnancy intake of folic acid can reduce GDM risk by 27% (adjusted OR 0.73, 95% CI 0.69–0.79, p < 0.001). The eight significant factors exhibited decent prediction performance as reflected by calibration and discrimination statistics and decision curve analysis. To enhance clinical application, a nomogram model was established by incorporating age and above eight factors, and importantly this model had a prediction accuracy of 87%. Taken together, eight independent pre-/early-pregnancy predictors were identified in significant association with later GDM risk, and importantly a nomogram modeling these predictors has over 85% accuracy in early detecting pregnant women who will progress to GDM later.


Author(s):  
Julia Günther ◽  
Julia Hoffmann ◽  
Lynne Stecher ◽  
Monika Spies ◽  
Kristina Geyer ◽  
...  

Abstract Objectives We aimed to investigate the predictive potential of early pregnancy factors such as lifestyle, gestational weight gain (GWG) and mental well-being on gestational diabetes mellitus (GDM) beyond established risk factors. Methods GDM risk was investigated in the cohort of the German ‘Gesund leben in der Schwangerschaft’/healthy living in pregnancy study. Women were recruited up to the 12th week of gestation. GDM was diagnosed with a 75 g oral glucose tolerance test between the 24th and 28th weeks of gestation. Pre-pregnancy age and weight, mental health and lifestyle were assessed via questionnaires. Maternal weight was measured throughout pregnancy. Early excessive GWG was defined based on the guidelines of the Institute of Medicine. The association between several factors and the odds of developing GDM was assessed using multiple logistic regression analyses. Results Of 1694 included women, 10.8% developed GDM. The odds increased with pre-pregnancy BMI and age (women with obesity: 4.91, CI 3.35–7.19, p < 0.001; women aged 36–43 years: 2.84, CI 1.45–5.56, p = 0.002). Early excessive GWG, mental health and general lifestyle ratings were no significant risk factors. A 31% reduction in the odds of GDM was observed when <30% of energy was consumed from fat (OR 0.69, CI 0.49–0.96, p = 0.026). Vigorous physical activity tended to lower the odds without evidence of statistical significance (OR 0.59 per 10 MET-h/week, p = 0.076). Conclusions Maternal age and BMI stand out as the most important drivers of GDM. Early pregnancy factors like dietary fat content seem to be associated with GDM risk. Further evaluation is warranted before providing reliable recommendations.


2017 ◽  
Vol 20 (1) ◽  
pp. 85-92
Author(s):  
Polina Viktorovna Popova ◽  
Aleksandra Sergeevna Tkachuk ◽  
Yana Alexeevna Bolotko ◽  
Andrey Sergeevich Gerasimov ◽  
Ksenia Alexandrovna Demidova ◽  
...  

Background. Gestational diabetes mellitus (GDM) is a common complication of pregnancy. It can cause significant problems for the mother and offspring, such as caesarean delivery, birth trauma and the development of type 2 diabetes mellitus (T2DM) in the future. The identification and correction of modifiable risk factors for GDM will provide a possibility to prevent these complications. Aim. This study aimed to identify the most significant lifestyle parameters affecting the risk of developing GDM. Methods. The study included 680 pregnant women who underwent oral glucose tolerance test at 2432 weeks of pregnancy and responded to a questionnaire comprising the following sections stratified in a semi-quantitative manner: the consumption of major food groups and drinks and the amount of physical activity and smoking before and during pregnancy. A logistic regression analysis was performed to identify lifestyle parameters that influence GDM development. GDM was diagnosed according to the IADPSG criteria. Results. GDM was diagnosed in 266 women; the other 414 women formed the control group. The most significant dietary risk factor for developing GDM was the consumption of sausage(s), dried fruits and fresh fruits. Eating sausage(s) more than thrice a week during pregnancy increased the risk of developing GDM by 2.4 times [95% confidence interval (CI), 1.53.8; p 0.001] and so did the consumption of dried fruits more than thrice a week during pregnancy [odds ratio (OR), 6.5; 95% CI, 2.516.8; p 0.001)] compared with the risk of GDM by less consumption of these food groups. A regular consumption of fresh fruits more than 12 times a week during pregnancy reduced the risk of GDM (OR, 0.5; 95% CI, 0.30.8; p = 0.015). The habit of climbing at least four floors per day during pregnancy also reduced the risk of GDM (OR, 0.7; 95% CI, 0.51.0; p = 0.069). Conclusions. The recommendations for GDM prevention should include limiting the consumption of sausage(s) and dried fruits, increasing the consumption of fresh fruits and introducing regular physical activities, such as climbing stairs.


2021 ◽  
Author(s):  
Sayuri Nakanishi ◽  
Shigeru Aoki ◽  
Ryosuke Shindo ◽  
Soichiro Obata ◽  
Junko Kasai ◽  
...  

Abstract Background: To investigate whether false-positive early gestational diabetes mellitus (GDM) women can be managed similarly as normal glucose tolerance (NGT) women.Methods: This retrospective study was conducted at a tertiary care center in Japan. Pregnancy and neonate outcomes of 117 singleton pregnancies with false-positive early GDM and 1774 singleton pregnancies with NGT who delivered after 22 weeks of gestation were compared. GDM was diagnosed according to the IADPSG criteria (patients having one or more of the following: fasting plasma glucose ≥ 92 mg/dL and a 75 g oral glucose tolerance test (OGTT) value ≥180 mg/dL at 1 h, or ≥153 mg/dL at 2 h). Pregnant women diagnosed with GDM in early pregnancy who did not meet the diagnostic criteria on the second OGTT were defined as having false-positive early GDM. Women with false-positive early GDM did not receive any therapeutic intervention during gestation.Results: Maternal age, pre-pregnancy BMI, and gestational weight gain were significantly higher in the false-positive GDM group than the NGT group. No significant differences were found in pregnancy outcomes, including gestational age, birth weight, large for gestational age rate, and cesarean delivery rate. Except for neonatal hypoglycemia rate, no significant differences were found in neonatal outcomes.Conclusions: There were no clinically significant differences between early GDM false-positive women exhibiting GDM patterns only during early pregnancy and NGT women. False-positive early GDM women can be managed similarly as NGT women, suggesting that WHO diagnostic guidelines, applying the IADPSG criteria during early pregnancy, need revision.


2020 ◽  
Author(s):  
Xiaotian Chen ◽  
Yi Zhang ◽  
Hongyan Chen ◽  
Yuan Jiang ◽  
Yin Wang ◽  
...  

<strong>OBJECTIVE</strong> <p>To investigate the association of folate and<b> </b>vitamin B<sub>12 </sub>in early pregnancy with gestational diabetes mellitus (GDM) risk.</p> <p> </p> <p><strong>RESEARCH DESIGN AND METHODS</strong> </p> <p><a></a><a>The data of this study were from a sub-cohort within the Shanghai Preconception Cohort Study. We included pregnancies with red blood cell (RBC) folate and vitamin B<sub>12</sub> measurements at recruitment (between </a><a>9-13 gestational weeks</a>) and those with three samples available for glucose measurements under oral glucose tolerance test (OGTT). GDM was diagnosed between 24-28 weeks gestation. <a>Odds ratio (OR) </a>of having a GDM and 95% confidence interval (CI) was used to quantify the association. </p> <p> </p> <p><strong>RESULTS</strong> </p> <p><a></a><a>A total of 1,058 pregnancies were included and 180 GDM occurred (17.01%).</a> RBC folate and vitamin B<sub>12 </sub>were significantly higher in pregnancies with GDM than those without GDM (<i>P</i> values were 0.045 and 0.002 respectively), and positively correlated with 1-hour and 2-hour serum glucose. Daily folic acid supplementation in early pregnancy increases the risk of GDM, OR (95% CI) was 1.73 (1.19-2.53), <i>P</i>=0.004. Compared with RBC folate <400 ng/mL, pregnancies with RBC folate ³600 ng/mL was associated with approximately 1.60-fold higher odds of GDM, the adjusted OR (95% CI) was 1.58 (1.03-2.41), <i>P</i>=0.033. A significant trend of risk effect on GDM risk across categories of RBC folate was observed (<i>P</i><sub>trend</sub> =0.021). Vitamin B<sub>12</sub> was significantly associated with GDM risk (OR =1.14 per 100 pg/ml, <i>P</i>=0.002). No significant association of serum folate and percentile ratio of RBC folate/vitamin B<sub>12</sub> with GDM was observed.</p> <p> </p> <p><strong>CONCLUSIONS</strong> </p> <p><a>Higher </a>maternal RBC folate and vitamin B<sub>12 </sub>levels<sub> </sub>in early pregnancy are significantly associated with GDM risk, while the balance of folate/vitamin B<sub>12</sub> is not significantly associated with GDM.</p>


Author(s):  
S. Khan ◽  
H. Bal ◽  
I. D. Khan ◽  
D. Paul

Background. India is the “World’s Diabetes capital”, with half the diabetic population being women. Early detection of glucose intolerance during pregnancy offers a timely opportunity for screening, management and prevention of gestational diabetes mellitus (GDM) and prevents fetal complications. Objective. The study assessed the prevalence of GDM in an Indian cohort using the Diabetes in Pregnancy Study group of India (DIPSI) criteria. Methods. 200 pregnant women underwent two-phase testing with non-fasting 75-gram glucose challenge under Diabetes in Pregnancy Study group of India (DIPSI) criteria at <20 weeks and between 24-28 weeks period of gestation. A 3-hour 100-gm oral glucose tolerance test (OGTT) was used for confirmation. Repeat testing was done for women negative during the first-phase. Results. Mean age was 24.26±3.75 years with 52.5% multigravidas. Mean Body Mass Index (BMI) was 20.7±3.07 kg/m2. The prevalence of GDM in study cohort was found to be 15.5% using the DIPSI criteria while the prevalence of GDM after 100 g OGTT was 13.0%. GDM was mostly seen to occur in women of 26-30-year age group. Statistically significant associations for age and GDM, and BMI and GDM were evidenced. Conclusions. Maternal age of ≥25 years should be adopted as a risk factor for the development of GDM. The DIPSI criteria offer a cost-effective and an evidence-based protocol for a single-step definitive glucose test for both screening and diagnosis of pregnant patients belonging to any socio-economic strata; furthering its implementation for public health obstetrics.


Author(s):  
Lency S. Kuriakose ◽  
Bhavani L. Nair ◽  
Prameeda P. Radha

Background: The prevalence of Gestational diabetes mellitus (GDM) is on the rise. Understanding the various outcomes of it is essential to face this challenge. The aim of the study was to understand the maternal outcomes of GDM in primigravida and to compare the maternal outcomes in primigravida with GDM and without GDM.Methods: This prospective study was conducted in the department of obstetrics and gynaecology at Sree Gokulam Medical College and Research Foundation, Venjaramood, Thiruvananthapuram, on 180 primigravida mothers,90 with and 90 without gestational diabetes. GDM was diagnosed with IADPSG criteria using 75 g Oral glucose tolerance test (OGTT).Results: A total of 180 primigravida with singleton gestation, 90 with GDM and 90 without GDM were followed from pregnancy to delivery after fulfilling criteria during study period. 65.6% GDM mothers had good compliance with Medical nutrition therapy (MNT) and exercise.  88.8% of GDM mothers required induction of labour, 13.3% had pregnancy induced hypertension, 12.2% had vulvovaginal candidiasis and 10% had postpartum hemorrhage. Thus, women with GDM on MNT or MNT with insulin had a higher risk of adverse maternal outcomes but was comparable to normoglycemic mothers if they had good compliance to MNT or insulin.Conclusions: Women with GDM had a higher but comparable risk of adverse maternal outcomes as compared to normoglycemic pregnant mothers, if they strictly adhere to MNT with or without insulin reflecting the importance of good treatment compliance. 


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