Pre-pregnancy Diabetes Mellitus Research Articles

Timing of delivery in women with pre-pregnancy diabetes mellitus: a population-based study

ObjectivesControversy exists about the timing of delivery of women with pre-pregnancy type 1 and 2 diabetes mellitus (PDM). This study aims to compare maternal and neonatal outcomes after induction of...

Maternal clinical profile and immediate neonatal outcome in term large for gestational age neonates

Background: The objective of the study was to know the maternal clinical profile and short term outcome of term large-for-gestational-age (LGA) neonates.Methods: The study was a prospective observational study conducted in the tertiary neonatal unit, Odisha, during the study period February to November 2018. All inborn term neonates with birth weight above 90th percentile for gestational age excluding neonates with major congenital anomalies were included. Maternal clinical profile data from the antenatal records, neonatal demographic profile and co-morbidities over time were recorded using a checklist. The analysis of data was done using SPSS 21.0. Univariate summary statistics and bivariate Fischer’s exact test were used to analyse the data.Results: The prevalence of delivery of LGA and macrosomic neonate in our institution was 2.5%, and 1.1% respectively. Ninety one percent of LGA neonates were born before 39weeks and 80% babies delivered by cesarean section. Majority 39 (86.7%) of LGA babies were born to non-diabetic mother, four (8.9%) neonates born to GDM mother, two (4.4%) were born to mother with pre pregnancy diabetes mellitus. Sixteen (35.5%) neonates were admitted to NICU for different comorbidities like neonatal jaundice (37.8%), polycythemia (24.4%), transient tachypnea of new-born (20%), hypoglycemia (15.6%), hypocalcaemia (15.6%), and seizure (4.4%). The comorbidities like hypoglycaemia, hypocalcemia, respiratory distress were more in LGA babies with diabetic mother compared to non-diabetic mother.Conclusions: About nine in ten LGA neonates were born to non-diabetic mothers, however, LGA infants of diabetic mothers are at higher risk of metabolic complications like hypoglycemia, hypocalcemia compared to non-diabetic mother.

Maternal and newborn outcomes with elective induction of labor at term

A growing body of evidence supports improved or not worsened birth outcomes with nonmedically indicated induction of labor at 39 weeks gestation compared with expectant management. This evidence includes 2 recent randomized control trials. However, concern has been raised as to whether these studies are applicable to a broader US pregnant population. Our goal was to compare outcomes for electively induced births at ≥39 weeks gestation with those that were not electively induced. We conducted a retrospective cohort study using chart-abstracted data on births from January 1, 2012, to December 31, 2017, at 21 hospitals in the Northwest United States. The study was restricted to singleton cephalic hospital births at 39+0-42+6 weeks gestation. Exclusions included previous cesarean birth, missing data for delivery type or gestational week at birth, antepartum stillbirth, cesarean birth without any attempt at vaginal birth, fetal anomaly, gestational diabetes mellitus, prepregnancy diabetes mellitus, and prepregnancy hypertension. The rate of cesarean birth for elective inductions at both 39 and 40 weeks gestation was compared with the rate in all other on-going pregnancies in the same gestational week. Maternal outcomes (operative vaginal birth, shoulder dystocia, 3rd- or 4th-degree perineal laceration, pregnancy-related hypertension, and postpartum hemorrhage) and newborn infant outcomes (macrosomia, 5-minute Apgar <7, resuscitation at delivery, intubation, respiratory complications, and neonatal intensive care unit admission) were also compared between elective inductions and on-going pregnancies at 39 and 40 weeks gestation. Logistic regression modeling was used to produce odds ratios for outcomes with adjustment for maternal age and body mass index. Results were stratified by parity and gestational week at birth. Duration of hospital stay (admission to delivery, delivery to discharge, and total stay) were compared between elective inductions and on-going pregnancies. A total of 55,694 births were included in the study cohort: 4002 elective inductions at ≥39+0 weeks gestation and 51,692 births at 39+0-42+6 weeks gestation that were not electively induced. In nulliparous women, elective induction at 39 weeks gestation was associated with a decreased likelihood of cesarean birth (14.7% vs 23.2%; adjusted odds ratio, 0.61; 95% confidence interval, 0.41-0.89) and an increased rate of operative vaginal birth (18.5% vs 10.8%; adjusted odds ratio, 1.8; 95% confidence interval, 1.28-2.54) compared with on-going pregnancies. In multiparous women, cesarean birth rates were similar in the elective inductions and on-going pregnancies. Elective induction at 39 weeks gestation was associated with a decreased likelihood of pregnancy-related hypertension in nulliparous (2.2% vs 7.3%; adjusted odds ratio, 0.28; 95% confidence interval, 0.11-0.68) and multiparous women (0.9% vs 3.5%; adjusted odds ratio, 0.24; 95% confidence interval, 0.15-0.38). Term elective induction was not associated with any statistically significant increase in adverse newborn infant outcomes. Elective induction of labor at 39 weeks gestation was associated with increased time from admission to delivery for both nulliparous (1.3 hours; 95% confidence interval, 0.2-2.3) and multiparous women (3.4 hours; 95% confidence interval, 3.2-3.6). Elective induction of labor at 39 weeks gestation is associated with a decrease in cesarean birth in nulliparous women, decreased pregnancy-related hypertension in multiparous and nulliparous women, and increased time in labor and delivery. How to use this information remains the challenge.

Impact of Diabetes, Obesity and Hypertension on Preterm Birth: Population-Based Study

Background: Preterm birth (PTB) is a major cause of infant death globally. The rising rates of pre-pregnancy diabetes mellitus (D), obesity (O) and chronic hypertension (H) will place a significant burden on maternal-fetal health but their combined influence on PTB is unknown. Methods: Population-based cohort study, Ontario, Canada, April 1, 2012 to March 31 2016. Participants were 506,483 women with a singleton livebirth or stillbirth at > 20 weeks' gestation. The exposures of interest were D, O and H, individually, and in various combinations. The primary outcome was PTB at 241/7 to 366/7 weeks. PTB was further analyzed by spontaneous or provider-initiated, early (< 34 weeks) or late (34-37 weeks), and the co-presence of preeclampsia, large for gestational age (LGA), and small for gestational age (SGA) birthweight. Multivariable Poisson regression models with robust error variance were used to generate relative risks (RR), further adjusted for maternal age and parity (aRR). Population attributable fractions were then calculated for each of the outcomes by exposure state. Findings: Relative to women without D or O or H, the aRR for PTB were (3.09, 95% CI 2.80-3.40) with D + O, 6.34 (95% CI 5.15-7.81) with D + H, 2.96 (95% CI 2.70-3.24) with O + H, and 5.55 (95% CI 4.76-6.47) with D + O + H. In women with D + H, aRR was more pronounced for provider-initiated PTB (10.99, 95% CI 8.40-14.38) than for spontaneous PTB (3.05, 95% CI 1.92-4.85). Those with D + O + H had an aRR of 9.21 (95% CI 4.97-17.04) for PTB with an SGA newborn relative to those without D or O or H. Interpretation: Combinations of D, O and H significantly magnify the risk of PTB, especially provider-initiated PTB, and PTB with altered fetal growth or preeclampsia. These data may inform health policy and clinical decision-making both at the population and patient level. Funding: CIHR. Declaration of Interest: All authors report no conflict of interest Ethical Approval: Ethics approval was obtained from the St. Michael’s Hospital Research Ethics Board (REB # 16-345).

Risk factors for gestational diabetes mellitus among women screened with the two-step and one-step methods: A before-and-after study

ObjectiveTo compare the risk profiles for gestational diabetes mellitus (GDM) using a one-step and two-step screening method and diagnostic criteria. Materials and methodsA retrospective cohort study was conducted among women screened using Carpenter and Coustan's (C&C) criteria (two-step method) and the International Association of the Diabetes and Pregnancy Study Groups (IADPSG) criteria (one-step method). All deliveries after 28 weeks of gestation, except for pregnancies complicated by pre-pregnancy diabetes mellitus, were analyzed. Multiple logistic regression was used to assess the associations between GDM and various potential risk factors. ResultsRisk factors for C&C-defined GDM were pre-pregnancy body mass index >24.2 kg/m2 (adjusted odds ratio [OR] 2.49, 95% confidence interval [CI] 1.92–3.23), maternal age at delivery >34 years (adjusted OR 2.46, 95% CI 1.96–3.09), history of fetal death (adjusted OR 2.56, 95% CI 1.37–4.78), and chronic hypertension (adjusted OR 3.66, 95% CI 1.50–8.91). In addition to these factors, conception assisted by reproductive technology (adjusted OR 1.64, 95% CI 1.19–2.25) and genetic amniocentesis (adjusted OR 1.19, 95% CI 1.03–1.38) were IADPSG-defined GDM risk factors. ConclusionRisk factors for GDM differ with the diagnostic criteria used. This information is important when changing GDM screening strategies from the two-step approach to the one-step approach.

Outcome of large- and small-for-gestational-age babies born to mothers with pre-pregnancy and gestational diabetes mellitus versus without diabetes mellitus

Introduction: The prevalence of diabetes mellitus (DM) is on the increase among general population and prenatal mothers. The feto-maternal outcome of mothers with DM varies with the type of DM, pre-pregnancy or gestational (PPDM and GDM), and glycemic control. Objective: The objective of this study is to assess the outcome of small- and large-for gestational-age (SGA and LGA) babies born to a cohort of mothers with PPDM and GDM and without DM. Materials and Methods: This cohort study was conducted in a tertiary care teaching hospital. A total of 480 mothers and their newborn babies were enrolled before 6 weeks of gestation and were categorized into PPDM, GDM, and no DM subgroups. Mothers were managed as per the standard protocols. Parameters observed were optimum/suboptimum glycemic control, neonatal weight, GA, morbidity, mortality, and neonatal intensive care unit (NICU) stay. Results: A total of 19.5% mothers had PPDM, including 70 mothers already diagnosed as DM, while 39% had GDM and 41.5% had no DM. The detection rate of PPDM was 5.6% and GDM was 17.5%. Majority of the mothers with PPDM and GDM required insulin and two-third had optimum glycemic control. Good glycemic control resulted in more appropriate-for-GA babies. SGA babies were more in PPDM group (54%), followed by GDM (26%) and non-DM (21%) subgroups, while LGA babies were less in these groups, i.e., 9.6%, 5.9%, and 0.5%, respectively. The following observations were statistically significant among PPDM compared to GDM: SGA (relative risk [RR] 2.1, 95% confidence interval [CI] 2.9–3.6), congenital anomalies (RR 3.3, 95% CI 5.1–8.8), and neonatal mortality (RR 4, 95% CI 2.1–3.2). Prematurity and NICU admission with longer stay were also more in PPDM. Macrosomia and birth injury were more in GDM. Hypoglycemia, longer NICU stay, and macrosomia were more with poor glycemic control. Conclusions: A change in profile with more SGA and less LGA babies was noted in this study. Differential short-term outcomes were noted, based on the onset of DM and glycemic control. Pre-pregnancy/early first-trimester screen followed by second and third trimester screens and optimum glycemic control, throughout pregnancy, is recommended.

Fetal parameters and early evidence of fetal macrosomia in prepregnancy diabetic women

Background: Diabetes in pregnancy with macrosomia is an important risk factor for neonatal morbidity and mortality. Prediction of macrosomia is significantly improved by adding ultrasound to clinical findings. Objective: For earlier detection of macrosomia in prepregnancy diabetic mothers using fetal growth profile including biparietal diameter, femoral length, and also abdominal circumference (AC). Patients and Methods: A historical prospective cohort study was performed at National Endocrine and Diabetic Center in addition to the Obstetrics and Gynecology Department at Al-Yarmouk Hospital for 2 years, from September 2014 to 2016. A hundred and sixty pregnant women were enrolled in this study, 80 of them with a history of prepregnancy diabetes mellitus were taken as a patient group and the other 80 pregnant women with a compatible gestational age and without a history of diabetes mellitus were taken as a comparison group. Abdominal ultrasound was done for patients in both groups at 20, 28, and 36 weeks of gestation and then birth weight was measured for each. Results were compared between two groups. Results: The incident of macrosomia was 30% in patient group and 10% in comparison group. Regarding early prediction of macrosomia by ultrasound using biparietal diameter, femoral length, and AC, the results of the current study revealed that those macrosomic babies have higher femoral length, AC but not biparietal diameter in comparison with babies of average weight using ultrasound performed at 20-week gestation and repeated at 28 and 36 weeks. Conclusion: In diabetic mother, fetal macrosomia can be predicted by ultrasound during pregnancy as early as 20-week gestation.

A simple clinical method to identify women at higher risk of preeclampsia.

An outstanding issue is how to efficiently identify women at high risk of preeclampsia. This retrospective cohort study included 8672 pregnancies at a single centre in Toronto. We tested our simple method - presence vs. absence of≥1 major (pre-pregnancy BMI>30kg/m2, chronic hypertension, pre-pregnancy diabetes mellitus and assisted reproductive therapy) or≥2 minor (prior stillbirth, age>40years, nulliparity, multifetal pregnancy, chronic kidney disease, and SLE) risk factors for PE. The RR of PE was 8.4 (95% CI 5.3-13.2) and the model C-statistic 0.74 (95% CI 0.69-0.79). Further testing of this method elsewhere is warranted.

Effect of Folic Acid Food Fortification in Canada on Congenital Heart Disease Subtypes.

Previous studies have yielded inconsistent results for the effects of periconceptional multivitamins containing folic acid and of folic acid food fortification on congenital heart defects (CHDs). We carried out a population-based cohort study (N=5 901 701) of all live births and stillbirths (including late-pregnancy terminations) delivered at ≥20 weeks' gestation in Canada (except Québec and Manitoba) from 1990 to 2011. CHD cases were diagnosed at birth and in infancy (n=72 591). We compared prevalence rates and temporal trends in CHD subtypes before and after 1998 (the year that fortification was mandated). An ecological study based on 22 calendar years, 14 geographic areas, and Poisson regression analysis was used to quantify the effect of folic acid food fortification on nonchromosomal CHD subtypes (n=66 980) after controlling for changes in maternal age, prepregnancy diabetes mellitus, preterm preeclampsia, multiple birth, and termination of pregnancy. The overall birth prevalence rate of CHDs was 12.3 per 1000 total births. Rates of most CHD subtypes decreased between 1990 and 2011 except for atrial septal defects, which increased significantly. Folic acid food fortification was associated with lower rates of conotruncal defects (adjusted rate ratio [aRR], 0.73, 95% confidence interval [CI], 0.62-0.85), coarctation of the aorta (aRR, 0.77; 95% CI, 0.61-0.96), ventricular septal defects (aRR, 0.85; 95% CI, 0.75-0.96), and atrial septal defects (aRR, 0.82; 95% CI, 0.69-0.95) but not severe nonconotruncal heart defects (aRR, 0.81; 95% CI, 0.65-1.03) and other heart or circulatory system abnormalities (aRR, 0.98; 95% CI, 0.89-1.11). The association between food fortification with folic acid and a reduction in the birth prevalence of specific CHDs provides modest evidence for additional benefit from this intervention.

Obesity, Diabetes, and Birth Outcomes Among American Indians and Alaska Natives.

Objectives To examine the relationships between prepregnancy diabetes mellitus (DM), gestational diabetes mellitus (GDM), and prepregnancy body mass index, with several adverse birth outcomes: preterm delivery (PTB), low birthweight (LBW), and macrosomia, comparing American Indians and Alaska Natives (AI/AN) with other race/ethnic groups. Methods The sample includes 5,193,386 singleton US first births from 2009-2013. Logistic regression is used to calculate adjusted odds ratios controlling for calendar year, maternal age, education, marital status, Kotelchuck prenatal care index, and child's sex. Results AI/AN have higher rates of diabetes than all other groups, and higher rates of overweight and obesity than whites or Hispanics. Neither overweight nor obesity predict PTB for AI/AN, in contrast to other groups, while diabetes predicts increased odds of PTB for all groups. Being overweight predicts reduced odds of LBW for all groups, but obesity is not predictive of LBW for AI/AN. Diabetes status also does not predict LBW for AI/AN; for other groups, LBW is more likely for women with DM or GDM. Overweight, obesity, DM, and GDM all predict higher odds of macrosomia for all race/ethnic groups. Conclusions for Practice Controlling diabetes in pregnancy, as well as prepregnancy weight gain, may help decrease preterm birth and macrosomia among AI/AN.

Lifestyle intervention can reduce the risk of gestational diabetes: a meta‐analysis of randomized controlled trials

This study aimed to examine the effect of lifestyle intervention on the risk of gestational diabetes mellitus (GDM). We searched PubMed, Springer and other databases to retrieve articles published in English and Chinese up to 30 September 2015. The inclusion criteria were randomized controlled trials evaluating the effects of lifestyle intervention on risk of GDM. Exclusion criteria were studies with prepregnancy diabetes mellitus or interventions with nutrient supplements. Random-effect and fixed-effect model analyses were used to obtain pooled relative risks and 95% confidence intervals (CIs) of diet and physical activity on the risk of GDM. Subgroup analyses were performed to check the consistency of effect sizes across groups where appropriate. We identified 29 randomized controlled trials with 11,487 pregnant women, addressing the effect of lifestyle intervention on the risk of GDM. In the pooled analysis, either diet or physical activity resulted in an 18% (95%CI 5-30%) reduction in the risk of GDM (P = 0.0091). Subgroup analysis showed that such intervention was effective among women with intervention before the 15th gestational week (relative risk: 0.80, 95%CI 0.66-0.97), but not among women receiving the intervention afterwards. We conclude that lifestyle modification during pregnancy, especially before the 15th gestational week, can reduce the risk of GDM. © 2016 World Obesity.

Impact of pre-pregnancy diabetes mellitus on congenital anomalies, Canada, 2002-2012.

To examine the impact of pre-pregnancy diabetes mellitus (DM) on the population birth prevalence of congenital anomalies in Canada. We carried out a population-based study of all women who delivered in Canadian hospitals (except those in the province of Quebec) between April 2002 and March 2013 and their live-born infants with a birth weight of 500 grams or more and/or a gestational age of 22 weeks or more. Pre-pregnancy type 1 or type 2 DM was identified using ICD-10 diagnostic codes. The association between DM and all congenital anomalies as well as specific congenital anomaly categories was estimated using adjusted odds ratios; the impact was calculated as a population attributable risk percent (PAR%). There were 118,892 infants with a congenital anomaly among 2,839,680 live births (41.9 per 1000). While the prevalence of any congenital anomaly declined from 50.7 per 1000 live births in 2002/03 to 41.5 per 1000 in 2012/13, the corresponding PAR% for a congenital anomaly related to pre-pregnancy DM rose from 0.6% (95% confidence interval [CI]: 0.4-0.8) to 1.2% (95% CI: 0.9-1.4). Specifically, the PAR% for congenital cardiovascular defects increased from 2.3% (95% CI: 1.7-2.9) to 4.2% (95% CI: 3.5-4.9) and for gastrointestinal defects from 0.8% (95% CI: 0.2-1.9) to 1.4% (95% CI: 0.7-2.6) over the study period. Although there has been a relative decline in the prevalence of congenital anomalies in Canada, the proportion of congenital anomalies due to maternal pre-pregnancy DM has increased. Enhancement of preconception care initiatives for women with DM is recommended.

Maternal obesity: significance on the preterm neonate

What is known of neonatal outcomes associated with maternal obesity is limited. The impact on the preterm neonate, delivery room (DR) course and need for neonatal intensive care unit (NICU) admission has not been well established. A review was done of our 17 county perinatal regions from the New York State Perinatal Data System database over the 3-year period of 1 January 2010-31 December 2012 for mother/baby dyad information for all live births 34-36 6/7 weeks' gestation. The National Institutes of Health body mass index (BMI) classification was used for maternal BMI with the category definitions of underweight, normal, overweight, obese Level I, obese Level II, and obese Level III. Information was obtained on 2155 women. In this group, 29% had obese BMIs. The incidence of pre-pregnancy diabetes mellitus (DM), DM during gestation and cesarean delivery (CD) in obese mothers was significantly different from normal weight mothers, P<0.001. More infants of Level III mothers required DR resuscitation when compared with infants of normal BMI mothers, 36 vs 16%, P <0.001. The need for assisted ventilation beyond 6 h of age and need for NICU admission was more likely in infants of Level III mothers, P<0.001. Women in all of the obese subgroups had preterm infants with increased birth weights (BWs) compared with preterm infants of normal weight mothers, P<0.001. Late preterm infants born to obese mothers are more likely to be delivered by cesarean section and have larger BWs. We found that infants born to obese Level III mothers are much more likely to require assisted ventilation in the DR and NICU admission.

The effects of implementing the International Association of Diabetes and Pregnancy Study Groups criteria for diagnosing gestational diabetes on maternal and neonatal outcomes.

BackgroundIn 2010, the International Association of the Diabetes and Pregnancy Study Groups (IADPSG) recommended a new strategy for the screening and diagnosis of gestational diabetes mellitus (GDM). However, no study has indicated that adopting the IADPSG recommendations improves perinatal outcomes. The objective of this study was to evaluate the effects of implementing the IADPSG criteria for diagnosing GDM on maternal and neonatal outcomes.Methodology/Principal FindingsPreviously, we used a two-step approach (a 1-h, 50-g glucose challenge test followed by a 3-h, 100-g glucose tolerance test when indicated) to screen for and diagnose GDM. In July 2011, we adopted the IADPSG recommendations in our routine obstetric care. In this study, we retrospectively compared the rates of various maternal and neonatal outcomes in all women who delivered after 24 weeks of gestation during the periods before (P1, between January 1, 2009 and December 31, 2010) and after (P2, between January 1, 2012 and December 31, 2013) the IADPSG criteria were implemented. Pregnancies complicated by multiple gestations, fetal chromosomal or structural anomalies, and pre-pregnancy diabetes mellitus were excluded. Our results showed that the incidence of GDM increased from 4.6% using the two-step method to 12.4% using the IADPSG criteria. Compared to the women in P1, the women in P2 experienced less weight gain during pregnancy, lower birth weights, shorter labor courses, and lower rates of macrosomia (<4000 g) and large-for-gestational age (LGA) infants. P2 was a significant independent factor against macrosomia (adjusted odds ratio [OR] 0.63, 95% confidence interval [CI] 0.43–0.90) and LGA (adjusted OR 0.74, 95% CI 0.61–0.89) after multivariable logistic regression analysis.Conclusions/SignificanceThe adoption of the IADPSG criteria for diagnosis of GDM was associated with significant reductions in maternal weight gain during pregnancy, birth weights, and the rates of macrosomia and LGA.

Trends in pre-pregnancy diabetes among deliveries in 19 U.S. states, 2000-2010.

Trends in state-level prevalence of pre-pregnancy diabetes mellitus (PDM; i.e., type 1 or type 2 diabetes diagnosed before pregnancy) among delivery hospitalizations are needed to inform healthcare delivery planning and prevention programs. To examine PDM trends overall, by age group, race/ethnicity, primary payer, and with comorbidities such as pre-eclampsia and pre-pregnancy hypertension, and to report changes in prevalence over 11 years. In 2014, State Inpatient Databases from the Agency for Healthcare Research and Quality were analyzed to identify deliveries with PDM and comorbidities using diagnosis-related group codes and ICD-9-CM codes. General linear regression with a log-link and binomial distribution was used to assess the annual change. Between 2000 and 2010, PDM deliveries increased significantly in all age groups, all race/ethnicity groups, and in all states examined (p<0.01). The age-standardized prevalence of PDM increased from 0.65 per 100 deliveries in 2000 to 0.89 per 100 deliveries in 2010, with a relative change of 37% (p<0.01). Although PDM rates were highest in the South, some of the largest relative increases occurred in five Western states (≥69%). Non-Hispanic blacks had the highest PDM rates and the highest absolute increase (0.26 per 100 deliveries). From 2000 to 2010, the proportion of PDM deliveries with pre-pregnancy hypertension increased significantly (p<0.01) from 7.4% to 14.1%. PDM deliveries are increasing overall and particularly among those with PDM who have hypertension. Effective diabetes prevention and control strategies for women of childbearing age may help protect their health and that of their newborns.

The BRAzil MAGnesium (BRAMAG) trial: a randomized clinical trial of oral magnesium supplementation in pregnancy for the prevention of preterm birth and perinatal and maternal morbidity.

BackgroundPreterm birth is the leading cause of infant mortality globally, including Brazil. We will evaluate whether oral magnesium citrate reduces the risk of placental dysfunction and its negative consequences for both the fetus and mother, which, in turn, should reduce the need for indicated preterm delivery.Methods/DesignWe will complete a multicenter, randomized double-blind clinical trial comparing oral magnesium citrate 150 mg twice daily (n = 2000 women) to matched placebo (n = 1000 women), starting at 121/7 to 206/7 weeks gestation and continued until delivery. We will include women at higher risk for placental dysfunction, based on clinical factors from a prior pregnancy (e.g., prior preterm delivery, stillbirth or preeclampsia) or the current pregnancy (e.g., chronic hypertension, pre-pregnancy diabetes mellitus, maternal age > 35 years or pre-pregnancy maternal body mass index > 30 kg/m2). The primary perinatal outcome is a composite of preterm birth < 37 weeks gestation, stillbirth > 20 weeks gestation, neonatal death < 28 days, or SGA birthweight < 3rd percentile. The primary composite maternal outcome is preeclampsia arising < 37 weeks gestation, severe non-proteinuric hypertension arising < 37 weeks gestation, placental abruption, maternal stroke during pregnancy or ≤ 7 days after delivery, or maternal death during pregnancy or ≤ 7 days after delivery.DiscussionThe results of this randomized clinical trial may be especially relevant in low and middle income countries that have high rates of prematurity and limited resources for acute newborn and maternal care.Trial registrationClinicalTrials.gov Identifier NCT02032186, registered December 19, 2013.

Factors associated with breastfeeding at discharge differ by maternal diabetes type

To investigate the factors associated with breastfeeding initiation in mothers with gestational and prepregnancy diabetes mellitus vs those without diabetes. Ohio Vital Statistics birth certificate data from 2006 to 2011 on all singleton births to women resident in Ohio aged 16-44 years were used to determine the factors associated with breastfeeding initiation by diabetes status. Logistic regression models stratified by diabetes status were used to analyse the association of breastfeeding with characteristics of the mother and infant. Among the 792 730 infants born in Ohio between 2006 and 2011 used in the analysis, 5.3% were born to mothers with gestational diabetes and 0.8% to mothers with prepregnancy diabetes. Although some associations of breastfeeding initiation with maternal and infant characteristics were similar across all diabetes statuses, they differed by maternal prepregnancy weight, age and race, prenatal care, county type and infant's gestational age. Unlike mothers without diabetes, overweight mothers with gestational diabetes were equally likely to breastfeed compared with those of normal weight (odds ratio 0.95; 95% CI 0.87, 1.03) and mothers in rural (odds ratio 1.0; 95% CI 0.9, 1.1) and metropolitan counties (OR 1.1; 95% CI 1.0, 1.1) were equally likely to breastfeed compared with those in suburban counties. Although significantly associated with breastfeeding initiation among mothers without diabetes, the mother's prepregnancy weight status and age, county type and prenatal care were not found to be significant factors among mothers with prepregnancy diabetes. Further research is needed to understand how these factors influence the initiation of breastfeeding decisions made by mothers.

Simulated estimates of pre-pregnancy and gestational diabetes mellitus in the US: 1980 to 2008.

PurposeTo simulate national estimates of prepregnancy and gestational diabetes mellitus (GDM) in non-Hispanic white (NHW) and non-Hispanic black (NHB) women.MethodsPrepregnancy diabetes and GDM were estimated as a function of age, race/ethnicity, and body mass index (BMI) using South Carolina live singleton births from 2004–2008. Diabetes risk was applied to a simulated population. Age, natality and BMI were assigned to women according to race- and age-specific US Census, Natality and National Health and Nutrition Examination Surveys (NHANES) data, respectively.ResultsFrom 1980–2008, estimated GDM prevalence increased from 4.11% to 6.80% [2.68% (95% CI 2.58%–2.78%)] and from 3.96% to 6.43% [2.47% (95% CI 2.39%–2.55%)] in NHW and NHB women, respectively. In NHW women prepregnancy diabetes prevalence increased 0.90% (95% CI 0.85%–0.95%) from 0.95% in 1980 to 1.85% in 2008. In NHB women from 1980 through 2008 estimated prepregnancy diabetes prevalence increased 1.51% (95% CI 1.44%–1.57%), from 1.66% to 3.16%.ConclusionsRacial disparities in diabetes prevalence during pregnancy appear to stem from a higher prevalence of prepregnancy diabetes, but not GDM, in NHB than NHW.

Children Born to Diabetic Mothers May be More Likely to Have Intellectual Disability

Intellectual disability (ID) is a major public health condition that usually develops in utero and causes lifelong disability. Despite improvements in pregnancy and delivery care that have resulted in dramatic decreases in infant mortality rates, the incidence of ID has remained constant over the past 20 years. There may still be uncharacterized preventable causes of ID such as Diabetes Mellitus (DM). We used statewide individual level de-identified data for maternal and child pairs obtained by linking Medicaid claims, Department of Education, and Department of Disabilities and Special Needs data from 2000 to 2007 for all mother-child pairs with a minimum follow-up of 3-years post birth or until a diagnosis of ID. To ascertain the adjusted relationship between DM and ID, we fit a logistic regression model taking into account individual level clustering on mothers for multiple pregnancies using the population-averaged Generalized Estimating Equations method. Of the 162,611 eligible maternal and child pairs, 5,667 (3.49 %) of the children were diagnosed with ID between birth and 3-years of age. After adjustment for covariates the independent relationship between DM and ID was significant with odds ratio of 1.10 (1.01-1.12). On sub-analysis, patients with pre-pregnancy DM had the highest effect measure with an estimated odds ratio of 1.32 (0.84, 2.09), although this was not statistically significant. In this large cohort of mothers and children in South Carolina, we found a small but statistically significant increased risk for ID among children born to mothers with DM. Additional information about the association between maternal DM and risk of ID in children may lead to the development of effective preventive interventions on the individual and public health levels.

Is bigger better? Macrosomia and psychopathology later in life

Evidence suggests that a curvilinear relationship may exist between birth weight and later psychopathology. Increases in the prevalence of macrosomia and of two of its risk factors (maternal pre-pregnancy obesity and diabetes mellitus) and their amenability to intervention argue for a critical review of the association between macrosomia and mental illness. Of the nine studies in adults and six studies in youth that have examined associations between macrosomia and psychiatric disorders, seven have provided evidence suggestive of a link. Significant methodological variability and an inability to adjust for important confounders limit the findings of these studies. As a result, it remains unclear if individuals born macrosomic are at increased risk for psychopathology later in life. Future work should attempt to examine a broader range of psychiatric outcomes, use validated measures, include data on putative confounders and utilize genetically sensitive designs to assess associations between macrosomia, its precursors and later psychological and emotional functioning.