You searched for:"Wellington de Paula Martins"
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Revista Brasileira de Ginecologia e Obstetrícia. 2017;39(10):523-528
To assess cases of labor induction with vaginal 25-μg tablets of misoprostol and maternal outcomes in a tertiary hospital in southeastern Brazil.
This was a retrospective cohort study of 412 pregnant women with indication for labor induction. Labor induction was performed with vaginal 25-μg tablets ofmisoprostol in pregnant women with Bishop scores < 6. Stepwise regression analysis was used to identify the factors present at the beginning of induction that could be used as predictors of successful labor induction.
A total of 69% of the pregnant women who underwent labor induction progressed to vaginal delivery, and 31% of the women progressed to cesarean section. One or two misoprostol tablets were used in 244 patients (59.2%). Of the 412 patients, 197 (47.8%) required oxytocin later on in the labor process, after induction with misoprostol. The stepwise regression analysis showed that only Bishop scores of 4 and 5 and previous vaginal delivery were independent factors with statistical significance in the prediction of successful vaginal labor induction (β = 0.23, p < 0.001, for a Bishop score of 4 and 5, and β = 0.22, p < 0.001, for previous vaginal delivery).
Higher Bishop scores and previous vaginal delivery were the best predictors of successful labor induction with vaginal 25-μg tablets of misoprostol.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(11):552-558
Whether preconception elevated concentrations of thyroid-stimulating hormone (TSH) compromises reproductive outcomes in patients undergoing assisted reproduction techniques (ARTs) remains unclear. This study therefore compared the reproductive outcomes in patients with TSH concentrations of < 2.5 mIU/L, 2.5-4.0 mIU/L, and 4.0-10.0mIU/L undergoing controlled ovarian stimulation (COS) for in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI).
This retrospective cohort study evaluated the medical records of all women with measured TSH concentrations who underwent IVF/ICSI between January 2011 and December 2012. The patients were divided into three groups: TSH < 2.5mIU/L (group 1); THS ≥2.5 and < 4.0 mIU/L (group 2); and THS ≥4 mIU/L and < 10.0 mIU/L (group 3). Patients who were administered levothyroxine for treating hypothyroidism were excluded from the analysis. The primary endpoints were clinical pregnancy,miscarriage, live birth and multiple pregnancy rates.
During the study period, 787 women underwent IVF/ICSI. Sixty were excluded because their TSH concentrations were unavailable, and 77 were excluded due to their use of levothyroxine. The prevalence of patients presenting elevated concentrations of TSHwas of 5.07% (using a TSH threshold of 4.0 mIU/L) and of 29.99% (using a TSH threshold of 2.5 mIU/L). Patient characteristics, type of COS, and response to COS did not differ among the three groups, and there were no differences in clinical pregnancy (24.4% versus 25.9% versus 24.2%, p = 0.93); miscarriage (17.1% versus 14.3% versus 12.5%, p = 0.93); live birth (20.2% versus 22.2% versus 21.2%, p = 0.86); and multiple pregnancy rates (27.0% versus 21.4% versus 25.0%, p = 0.90) respectively.
Response to COS, live birth, and miscarriage rates were not altered in women with elevated concentrations of TSH undergoing IVF/ICSI, regardless of using a TSH threshold of 2.5mIU/L or 4.0mIU/L. These findings reinforce the uncertainties related to the impact of subclinical hypothyroidism on reproductive outcomes in women undergoing COS for ARTs.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(9):436-442
Ventriculomegaly (VM) is one the most frequent anomalies detected on prenatal ultrasound. Magnetic resonance imaging (MRI) may enhance diagnostic accuracy and prediction of developmental outcome in newborns.
The aim of this study was to assess the correlation between ultrasound and MRI in fetuses with isolated mild and moderate VM. The secondary aim was to report the neurodevelopmental outcome at 4 years of age.
Fetuses with a prenatal ultrasound (brain scan) diagnosis of VM were identified over a 4-year period. Ventriculomegaly was defined as an atrial width of 10- 15 mm that was further divided as mild (10.1-12.0 mm) and moderate (12.1-15.0 mm). Fetuses with VM underwent antenatal as well as postnatal follow-ups by brain scan and MRI. Neurodevelopmental outcome was performed using the Griffiths Mental Development Scales and conducted, where indicated, until 4 years into the postnatal period.
Sixty-two fetuses were identified. Ventriculomegaly was bilateral in 58% of cases. A stable dilatation was seen in 45% of cases, progression was seen in 13%, and regression of VM was seen in 4.5% respectively. Fetal MRI was performed in 54 fetuses and was concordant with brain scan findings in 85% of cases. Abnormal neurodevelopmental outcomes were seen in 9.6% of cases.
Fetuses in whom a progression of VM is seen are at a higher risk of developing an abnormal neurodevelopmental outcome. Although brain scan and MRI are substantially in agreement in defining the grade of ventricular dilatation, a low correlation was seen in the evaluation of VM associated with central nervous system (CNS) or non-CNS abnormalities.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(9):465-470
Infertility has a high prevalence in the general population, affecting 5 to 15% of couples in reproductive age. The assisted reproduction techniques ( ART ) include in vitro manipulation of gametes and embryos and are an important treatment indicated to these couples. It is well accepted that the implantation rate is positively influenced by the morphology of transferred embryos. However, we question if, apart from the assessment of embryo morphology, the number of produced embryos per cycle is also related to pregnancy rates in the first fresh transfer cycle.
To evaluate the clinical pregnancy rate according to the number of formed embryos and the transfer of top quality embryos ( TQEs ).
In a retrospective cohort study, between January 2011 and December 2012 , we evaluated women who underwent intracytoplasmic sperm injection (ICSI), aged < 40 years, andwith at least 1 formed embryo fresh transferred in cleavagestage. These women were stratified into 3 groups according to the number of formed embryos (1 embryo, 2-3 and ≥ 4 embryos). Each group was divided into 2 subgroups according to the presence or not of at least 1 transferred TQE (1 with TQE; 1 without TQE; 2-3 with TQE, 2-3 without TQE; ≥4with TQE; ≥4withoutTQE). The clinicalpregnancy rateswerecomparedineach subgroup based on the presence or absence of at least one transferred TQE.
During the study period, 636 women had at least one embryo to be transferred in thefirst fresh cycle (17.8% had 1 formed embryo [32.7% with TQEversus 67.3% without TQE], 42.1% of women had 2-3 formed embryos [55.6% with TQE versus 44.4% without TQE], and 40.1%ofpatientshad ≥4 formedembryos[73.7%withTQEversus26.3%withoutTQE]).The clinical pregnancy rate was significantly higher in the subgroup with ≥4 formed embryos with at least 1 transfered TQE (45.2%) compared with the subgroup without TQE (28.4%).
Having at least two available embryos and at least one TQE for embryo transfer are predictors of the pregnancy rates.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(5):218-224
To evaluate whether women with endometriosis have different ovarian reserves and reproductive outcomes when compared with women without this diagnosis undergoing in vitro fertilization/intracytoplasmic sperm injection ( IVF/ ICSI), and to compare the reproductive outcomes between women with and without the diagnosis considering the ovarian reserve assessed by antral follicle count ( AFC ).
This retrospective cohort study evaluated all women who underwent IVF/ ICSI in a university hospital in Brazil between January 2011 and December 2012. All patients were followed up until a negative pregnancy test or until the end of the pregnancy. The primary outcomes assessed were number of retrieved oocytes and live birth. Women were divided into two groups according to the diagnosis of endometriosis, and each group was divided again into a group that had AFC 6 (poor ovarian reserve) and another that had AFC 7 (normal ovarian reserve). Continuous variables with normal distribution were compared using unpaired t-test, and those without normal distribution, using Mann-Whitney test. Binary data were compared using either Fisher's exact test or Chi-square (2) test. The significance level was set as p < 0.05.
787 women underwent IVF/ICSI (241 of which had endometriosis). Although the mean age has been similar between women with and without the diagnosis of endometriosis (33.8 4 versus 33.7 4.4 years, respectively), poor ovarian reserves were much more common in women with endometriosis (39.8 versus 22.7%). The chance of achieving live birth was similar between women with the diagnosis of endometriosis and those without it (19.1 versus 22.5%), and also when considering only women with a poor ovarian reserve (9.4 versus 8.9%) and only those with a normal ovarian reserve (25.5 versus 26.5%).
Women diagnosed with endometriosis are more likely to have a poor ovarian reserve; however, their chance of conceiving by IVF/ICSI is similar to the one observed in patients without endometriosis and with a comparable ovarian reserve.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2012;34(7):316-322
DOI 10.1590/S0100-72032012000700005
PURPOSE: To compare the metabolic parameters, body composition and muscle strength of women with Polycystic Ovary Syndrome (PCOS) to those of women with ovulatory menstrual cycles. METHODS: A case-control study was conducted on 27 women with PCOS and 28 control women with ovulatory cycles, aged 18 to 27 years with a body mass index of 18 to 39.9 kg/m², who did not practice regular physical activity. Serum testosterone, androstenedione, prolactin, sex hormone-binding globulin (SHBG), insulin and glycemia levels were determined. Free androgen index (FAI) and resistance to insulin (by HOMA) were calculated. The volunteers were submitted to evaluation of body composition based on skin folds and DEXA and to 1-RM maximum muscle strength tests in three exercises after familiarization procedures and handgrip isometric force was determined. RESULTS: Testosterone levels were higher in the PCOS group than in the Control Group (68.07±20.18 versus 58.20±12.82 ng/dL; p=0.02), as also were the FAI (282.51±223.86 versus 127.08±77.19; p=0.01), insulin (8.41±7.06 versus 4.05±2.73 µIU/mL; p=0.01), and HOMA (2.3±2.32 versus 1.06±0.79; p=0.01), and SBHG levels were lower (52.51±43.27 versus 65.45±27.43 nmol/L; p=0.04). No significant differences in body composition were observed between groups using the proposed methods. The PCOS group showed greater muscle strength in the 1-RM test in the bench press (31.2±4.75 versus 27.79±3.63 kg; p=0.02), and leg extension exercises (27.9±6.23 versus 23.47±4.21 kg; p=0.02) as well as handgrip isometric force (5079.61±1035.77 versus 4477.38±69.66 kgf/m², p=0.04). PCOS was an independent predictor of increase muscle strength in bench press exercises (estimate (E)=2.7) (p=0.04) and leg extension (E=3.5) (p=0.04), and BMI in the exercise of isometric handgrip (E=72.2) (p<0.01), bench press (E=0.2) (p=0.02) and arm curl (E=0.3) (p<0.01). No association was found between HOMA-IR and muscle strength. CONCLUSIONS: Women with POS showed greater muscle strength, with no difference in body composition, and IR was not associated with muscle strength performance. Muscle strength may be possibly related to high levels of androgens in these women.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2010;32(9):447-453
DOI 10.1590/S0100-72032010000900006
PURPOSE: to evaluate the concentration of steroid hormones in follicular fluid (FF) of small (10-14 mm) and large (> 18 mm) follicles of women with polycystic ovary syndrome (PCOS) submitted to controlled ovarian hyperstimulation (COH) and in vitro fertilization (IVF) cycles. METHODS: a case-control study was conducted on 13 infertile women with PCOS (17 cycles) and 31 infertile women due to male factor - Control Group (31 cycles). FF was aspirated individually and divided into four groups: G1 (FF of small follicles of the Control Group), G2 (FF of small follicles of the PCOS group), G3 (FF of large follicles of the Control Group) and G4 (FF of large follicles of the PCOS group). Estrogen, progesterone and β-hCG were determined by chemiluminescence, and testosterone and androstenedione by radioimmunoassay. The unpaired t-test was used to compare the hormone determinations in the FF of the PCOS and Control Groups, and the four groups were compared by ANOVA. Fisher's exact test was used to compare the pregnancy rates. RESULTS: the small follicles of the two groups had lower progesterone levels (8,435±3,305 ng/mL) than large follicles (10,280±3,475 ng/mL), p-value <0.01. The progesterone levels of all follicles of group PCOS (8,095±4,151 ng/mL) were lower than Control (9,824±3,128 ng/mL), p-value =0.03. Testosterone differed between G1 (326.6±124.4 ng/dL) and G3 (205.8±98.91 ng/dL), p-value <0.001, and between G3 (205.8±98.91 ng/dL) and G4 (351.10±122.1ng/dL), p-value <0.001. Small follicles had higher testosterone levels (508.9±266 ng/dL) than large follicles (245.10±123 ng/dL), p-value <0.0001. The pregnancy rates did not differ between the PCOS (5/13, 38.5%) and the Control groups (9/31, 40.9%), p-value =072. CONCLUSIONS: women with PCOS had high testosterone concentrations in the FF, regardless of the stage of follicle development, and reduced progesterone levels, suggesting that paracrine factors may inhibit the secretion of the latter by follicular cells. The pregnancy rates showed that treatment with COH and IVF is a good option for women with infertility secondary to PCOS.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(7):342-348
DOI 10.1590/S0100-72032009000700004
PURPOSE: to compare echographical cardiovascular risk factors between obese and non-obese patients with micropolycystic ovarian syndrome (MPOS). METHODS: in this transversal study, 30 obese (Body Mass Index, BMI>30 kg/m²) and 60 non-obese (BMI<30 kg/m²) MPOS patients, aging between 18 and 35 years old, were included. The following variables were measured: flow-mediated dilatation (FMD) of the brachial artery, thickness of the intima-media of the carotid artery (IMT), anthropometric data, systolic arterial pressure (SAP) and diastolic arterial pressure (DAP). The women had no previous medical treatment and no comorbidity besides MPOS and obesity. For statistical analysis, the non-paired tand Mann-Whitney's tests were used. RESULTS: obese weighted more than non-obese patients (92.1±11.7 kg versus 61.4±10.7 kg, p<0.0001) and had a larger waist circumference (105.0±10.4 cm versus 78.5±9.8 cm, p<0.0001). The SBP of obese patients was higher than that of the non-obese ones (126.1±10.9 mmHg versus 115.8±9.0 mmHg, p<0.0001) and the IMT was also bigger (0.51±0.07 mm versus 0.44±0.09 mm, p<0.0001). There was no significant difference between the groups as to FMD and carotid rigidity index (β). CONCLUSIONS: obesity in young women with MPOS is associated with higher blood pressure and alteration of arterial structure, represented by a thicker intima-media of the carotid artery.