Metformin was not effective in reducing BMI and preventing GDM in obese pregnant women.

Objective Does the use of metformin have an influence on the outcomes of preeclampsia (PE)? Sources of Data The descriptors pregnancy, metformin, treatment, and preeclampsia associated with the Boolean operators AND and OR were found in the MEDLINE, LILACS, Embase and Cochrane databases. A flowchart with exclusion criteria and inclusion strategy using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol, and eligibility criteria was used. Data were extracted regarding the type of study, the applied dosage, treatment time, segment, bias risks, and the Patient, Intervention, Comparison and Outcome (PICO) strategy to identify the quality of the study. Selection of Studies Total number of journals in the initial search (n ¼ 824); exclusions from repeated articles on different search engines (n ¼ 253); exclusions after reading the titles, when the title had no correlations with the proposed theme (n ¼ 164); exclusions due to incompatibility with the criteria established in the methodological analysis (n ¼ 185), exclusion of articles with lower correlation with the objective of the present study (n ¼ 187); and final bibliographic selection (n ¼ 35). Data Collection At first, a systematic review of the literature was performed. Subsequently, from the main selection, randomized and non-randomized trials with metformin that presented their results in absolute and relative numbers of PE outcomes were selected. The variables were treated statistically in the meta-analysis with the Review Manager software (RevMan), version 5.3. Copenhagen: Nordic Cochrane Centre, The Cochrane Collaboration. Denmark in the Hovedistaden region. Synthesis of Data The study showed that metmorfin presented greater preventive effects for pregnancy-induced hypertension and was less effective for PE.

Avaliar o tratamento utilizado e a classificação de peso de recém-nascidos (RN) de gestantes portadoras de Diabetes Mellitus Gestacional (DMG). Foi realizado um estudo transversal descritivo com gestantes portadoras de DMG, em gestação única, no período de abril de 2011 a fevereiro de 2016. Os dados avaliados foram o tipo de tratamento utilizado e a classificação de peso do RN. Foram avaliadas 893 gestantes. A dieta e a atividade física como única terapêutica foram utilizadas por 306 (34,3%), 366 (41%) necessitaram metformina, a associação de metformina e insulina foi necessária em 109 (12,2%) e utilizaram somente insulinoterapia 112 (12,5%) gestantes. Houve 27 (3,0%) RN pequenos para a idade gestacional (PIG), 687 (76,9%) RN adequados para a idade gestacional (AIG) e 179 (20,0%) RN grandes para a idade gestacional (GIG). A metformina foi a terapêutica mais utilizada e a maioria dos recém-nascidos foram AIG.

Objective: To evaluate the use of metformin for preventing cesarean deliveries and large-forgestational-age (LGA) newborn (NB) outcomes in non-diabetic obese pregnant women. Subjects and methods: This is a randomized clinical trial with obese pregnant women, divided into 2 groups: metformin group and control group, with followed-up prenatal routine. The gestational age of participants was less than or equal to 20 weeks and were monitored throughout entire prenatal period. For outcomes of delivery and LGA newborns, absolute risk reduction (ARR) and the number needed to treat (NNT) were calculated with a 95% confidence interval (CI). Results: 357 pregnant women were evaluated. From the metformin group (n = 171), 68 (39.8%) subjects underwent cesarean delivery, and 117 (62.9%) subjects from the control group (n = 186) had intercurrence (p < 0.01). As for the mothers' general characteristics, there was significance for marital status (p < 0.01). Maternalfetal results presented reduced preeclampsia (p < 0,01). Primary prophylactic results presented an ARR of 23.1 times (95% CI: 13.0-33.4) with NNT of 4 (95% CI: 3.0-7.7) and no significant values for LGA NB (p > 0.01). Secondary prophylactic outcomes presented decreased odds ratio for preeclampsia (OR = 0.17, 95% CI: 0.10-0.41). Conclusion: The use of metformin reduced cesarean section rates, resulted in a small number of patients to be treated, but it did not reduce LGA NB. Administering a lower dosage of metformin from the early stages to the end of treatment may yield significant results with fewer side effects.

Objective To evaluate the factors associated with the need for insulin as a complementary treatment to metformin in pregnant women with gestational diabetes mellitus (GDM). Methods A case-control study was performed from April 2011 to February 2016 with pregnant women with GDM who needed complementary treatments besides diet and physical exercise. Those treated with metformin were compared with those who, in addition to metformin, also needed the combination with insulin. Maternal characteristics and glycemic control were evaluated. Multinomial logistic regression models were developed to evaluate the influence of different therapies on neonatal outcomes. Results A total of 475 pregnant women who needed pharmacological therapy were evaluated. Of these, 366 (77.05%) were submitted to single therapy with metformin, and 109 (22.94%) needed insulin as a complementary treatment. In the analysis of the odds ratio (OR), fasting glucose (FG) < 90 mg/dL reduced the odds of needing the combination (OR: 0.438 [0.235–0.815]; p = 0.009], as well as primiparity (OR: 0.280 [0.111–0.704]; p = 0.007]. In obese pregnant women, an increased chance of needing the combination was observed (OR: 2,072 [1,063–4,039]; p = 0,032). Conclusion Obesity resulted in an increased chance of the mother needing insulin as a complementary treatment to metformin, while FG < 90 mg/dL and primiparity were protective factors.