Efecto del embarazo y el parto en la musculatura perineal de mujeres con obesidad. Un estudio de cohorte longitudinal / Effect of pregnancy and delivery on perineal musculature in obese women: A longitudinal cohort study

Objetivo: Evaluar la evolución de la musculatura perineal en mujeres primigestas afectas de obesidad (índice de masa corporal [IMC]≥30) y comparar dicha evolución con mujeres primigestas con un IMC en rango de normopeso. Método: Se realizó un estudio cohorte longitudinal prospectivo donde se estudió a las gestantes en 3 momentos: en semana 12 de gestación, la semana 34 de gestación y a las 12 semanas tras el parto. En estas consultas se realizó medición mediante perinometría para determinar el tono basal (TB), la fuerza máxima contráctil (FMax); y la fuerza ejercida (FE). Además, se utilizó el test de Oxford modificado (MOS). Para el estudio estadístico se utilizaron modelos estadísticos generales mixtos. Resultados: Se reclutaron al inicio 50 gestantes nulíparas (25 con IMC≥30 y 25 con IMC<25), concluyendo el estudio completo 39. Al inicio del embarazo el tono perineal basal fue de 4,62±0,24Newton (Nw) y descendió a 4,18±0,26Nw tras el parto. La capacidad contráctil fue de 5,56±0,79Nw en la semana 12 y aumento a 6,34±1,24Nw tras el parto. Al comparar la FCMax en la semana 12 en gestantes obesas vs. Normopeso se observan valores de 5,51±87Nw vs. 5,61±0,71Nw (p=0,941). Se observaron valores posparto 6,72±1,17Nw vs. 5,95±1,21Nw (p=0,024), superiores en la población con obesidad. Conclusiones: Existe una disminución significativa del tono basal que es contrarrestada con un aumento de la fuerza contráctil objetivable a las 12 semanas posparto. El organismo dispone de mecanismos compensadores que permiten la recuperación a partir de los 3 meses posparto existiendo una mayor fuerza muscular dentro de las pacientes con obesidad.(AU)

Objective: Evaluating the changes of the perineal muscles in primigravid women with obesity (BMI≥30) and to compare the progress with primigravid women in normal BMI range. Methods: A prospective longitudinal cohort study was carried out. The pregnant women were studied at three moments: at 12 weeks’ gestation, at 34 weeks’ gestation and at 12 weeks after delivery. During the ckeck-up, perinometric measurements were taken to determine basal tone (BT), maximum contractile force (FMax) and applied forced (AF). In addition, the Oxford test (MOS) was used. General statistical mixed models were used for the statistical study. Results: Fifty nulliparous pregnant women (25 with BMI≥30 and 25 with BMI<25) were recruited at the beginning of the study and 39 completed the entire study. Basal tone (BT) was 4.62±0.24 Nw at the beginning of pregnancy and decreased to 4.18±0.26 Nw after delivery. Contractile capacity was 5.56±0.79 Nw at week 12 and increased to 6.34±1.24 Nw after delivery. When comparing the FCMax at week 12 in obese vs. normal weight pregnant women, values of 5.51±87 Nw vs. 5.61±0.71 Nw were observed (P=.941). Postpartum values were 6.72±1.17 Nw vs. 5.95±1.21 Nw (P=.024), higher in the obese population. Conclusions: There is an increase in contractile strength (Fmax) at 12 weeks postpartum in order to counteract the significant decrease in basal tone (BT). The body has compensatory mechanisms that allow recovery after 3 months postpartum, with greater muscle strength in obese patients.(AU)

Abnormal Maternal Body Mass Index and Customized Fetal Weight Charts: Improving the Identification of Small for Gestational Age Fetuses and Newborns.

BACKGROUND: Obesity and thinness are serious diseases, but cases with abnormal maternal weight have not been excluded from the calculations in the construction of customized fetal growth curves (CCs). METHOD: To determine if the new CCs, built excluding mothers with an abnormal weight, are better than standard CCs at identifying SGA. A total of 16,122 neonates were identified as SGA, LGA, or AGA, using the two models. Logistic regression and analysis of covariance were used to calculate the OR and CI for adverse outcomes by group. Gestational age was considered as a covariable. RESULTS: The SGA rates by the new CCs and by the standard CCs were 11.8% and 9.7%, respectively. The SGA rate only by the new CCs was 18% and the SGA rate only by the standard CCs was 0.01%. Compared to AGA by both models, SGA by the new CCs had increased rates of cesarean section, (OR 1.53 (95% CI 1.19, 1.96)), prematurity (OR 2.84 (95% CI 2.09, 3.85)), NICU admission (OR 5.41 (95% CI 3.47, 8.43), and adverse outcomes (OR 1.76 (95% CI 1.06, 2.60). The strength of these associations decreased with gestational age. CONCLUSION: The use of the new CCs allowed for a more accurate identification of SGA at risk of adverse perinatal outcomes as compared to the standard CCs.

The NDDG criteria versus the IADPSG or the ADA criteria for diagnosing early-onset gestational diabetes mellitus or abnormal glucose tolerance.

OBJECTIVE: To analyze the effects of substituting the National Diabetes Data Group (NDDG) criteria with the International Association of Diabetes and Pregnancy Study Groups (IADPSG) or American Diabetes Association (ADA) criteria for the diagnosis of early-onset gestational diabetes mellitus (Early-GDM) or first trimester abnormal glucose tolerance (1 t-AGT). METHODS: A retrospective cohort study was conducted of 3200 women: 400 with Early-GDM, 800 with GDM, and 2000 with Non-GDM, according to the NDDG criteria. Rates of women with missed and new Early-GDM according to the IADPSG or ADA criteria were calculated. Multivariate logistic regression analysis was used to compare perinatal outcomes between groups. RESULTS: Using the IADPSG criteria, 61.6% of women with Early-GDM according to the NDDG were undiagnosed (Missed-Early-GDM group), and 25.9% of women with GDM and 15.7% of women with Non-GDM were diagnosed with Early-GDM (New-Early-GDM groups). Perinatal outcomes were worse in Missed-Early-GDM than in Non-GDM and better in New-Early-GDM groups than in the Early-GDM group. According to the ADA recommendations, only 11.8% of women with Early-GDM according to the NDDG criteria were diagnosed. CONCLUSION: Replacing the NDDG recommendations for the diagnosis of Early-GDM with the IADPSG or ADA criteria would mean depriving a large number of women with AGT and higher risk of adverse perinatal outcomes from early treatment and treating others with lower risk.

Fasting Glucose for the Diagnosis of Gestational Diabetes Mellitus (GDM) during the COVID-19 Pandemic.

Background: During the COVID-19 pandemic, different non-validated tests were proposed to simplify the diagnosis of gestational diabetes (GDM). Aim: To analyse the effects of replacing the two-step approach for Early-GDM and GDM diagnosis, with a fasting plasma glucose test. Material and Methods: This is a cohort study consisting of 3200 pregnant women: 400 with Early-GDM, 800 with GDM and 2000 with Non-GDM diagnosed using the two-step approach. Using fasting plasma glucose for Early-GDM and GDM diagnosis, according to the recommendations of Spain, Australia, Italy and the UK during the pandemic, the rates of missed and new Early-GDM and GDM were calculated and perinatal outcomes were analysed. Results: Using fasting plasma glucose in the first trimester >100 mg/dL for Early-GDM diagnosis, the rates of post-COVID missed and new Early-GDM were 79.5% and 3.2%, respectively. Using fasting plasma glucose at 24−28 weeks <84 or >92, 95 or 100 mg/dL for GDM diagnosis, the rates of missed GDM were 50.4%, 78%, 82.6% and 92.4%, respectively, and 8.6%, 5.6% and 2.3% women with Non-GDM were diagnosed with new GDM. Conclusion: Fasting plasma glucose is not a good test for the diagnosis of GDM either in the first trimester or at 24−28 weeks.

Mortalidad materna en España en el periodo 2010-2012: resultados de la encuesta de la Sociedad Española de Ginecología (SEGO) / Maternal mortality in Spain from 2010 to 2012: results of Spanish Society of Gynaecology Survey (SEGO)

Objetivo: la Sociedad Española de Obstetricia y Ginecología establece como uno de sus objetivos el conocer la tasa de mortalidad materna en España durante el periodo 2010-2012 y sus principales causas. Sujetos y Método: con este fin, la Sociedad Española de Obstetricia y Ginecología constituye un grupo de trabajo que elabora una encuesta que se remite a los 191 jefes de servicio de hospitales públicos y privados españoles. El análisis de los datos se llevó a cabo de forma confidencial, al igual que los nombres de los centros de los que procedían. Se llevó a cabo un procedimiento confidencial de los datos y su procedencia. Se cruzaron. Se analizan las causas obstétricas directas e indirectas de los datos con los publicados por el Instituto Nacional de Estadística. Resultados: respondieron 45 hospitales (23,56%). La encuesta representa el 18,9% de los recién nacidos en España en ese periodo. La tasa de mortalidad materna fue de 6,00/100.000 nacidos. Se consideró una subestimación del 48% de los datos registrados por el Instituto Nacional de Estadística. Las causas obstétricas directas representaron el 37,5%, siendo la hemorragia postparto la más importante. La causa obstétrica indirecta representó el 56,25%. El porcentaje de autopsias fue de 31%. Conclusiones: la tasa de mortalidad materna fue de 6/100.000 nacidos. El porcentaje de subestimación en las cifras oficiales se cifra en 48%. La causa obstétrica directa representó el 37,5%, siendo la hemorragia postparto las más frecuente. Se proponen medidas para mejorar esta información en nuestro país (AU)

Objectives: One of the aims of the Spanish Society of Obstetrics and Gynaecology is to determine the rate of maternal mortality and its main causes for the period 2010-2012. Subjects and methods: To do this, the Spanish Society of Obstetrics and Gynaecology formed a working group to draft a survey sent to 191 heads of obstetrics and gynaecology services in public and private hospitals. Analysis of the data and their origin was confidential. The data were crossed with those published by the Spanish National Statistics Institute. Direct and indirect obstetric causes were analysed. Results: Forty-five hospitals responded (23.56%). The survey represented 18.9% of newborns in Spain in that period. The maternal mortality ratio was 6/100.000 births. An underestimation of 48% was observed in relation to the data from the Spanish National Statistics Institute. Direct obstetric causes accounted for 37.5% of deaths, the most important being postpartum haemorrhage. Indirect obstetric causes accounted for 56.25%. The percentage of autopsies was 31%. Conclusions: The maternal mortality ratio was 6/100.000 births. The percentage of underestimation regarding official figures was 48%. Direct obstetric causes accounted for 37.5% of deaths, the most important cause being postpartum haemorrhage. Measures to improve this information in Spain are proposed (AU)

Customized weight curves for Spanish fetuses and newborns.

OBJECTIVES: To construct a model of customized birthweight curves for use in a Spanish population. MATERIALS AND METHODS: Data of 20 331 newborns were used to construct a customized birthweight model. Multiple regression analysis was performed with newborn weight as the dependent variable and gestational age (GA), sex and maternal (M) weight, height, parity and ethnic origin as the independent variables. Using the new model, 27,507 newborns were classified as adequate for GA (AGA), large for GA (LGA) or small for GA (SGA). The results were compared with those of other customized and non-customized models. RESULTS: The resulting formula for the calculation of optimal neonatal weight was: Optimum weight (g) = 3289.681 + 135.413*GA40-14.063*GA40(2)-0.838*GA40(3) + 113.889 (if multiparous) + 165.560 (if origin = Asia) + 161.550 (South America) + 67.927 (rest of Europe) +109.265 (North Africa) + 9.392*Maternal-Height + 4.856*Maternal-Weight-0.098*Maternal-Weight(2) + 0.001*Maternal-Weight(3) + 67.188*Sex + GA40*(6.890*Sex + 9.032 (If multiparous) +0.006*Maternal-Height(3) + 0.260*Maternal-Weight) + GA40(2) (-0.378*Maternal-Height - 0.008*Maternal-Height(2)) + GA40(3) (-0.032*Maternal-Height). Weight percentiles were obtained from standard data using optimum weight variation coefficient. Agreement between our customized model and other Spanish models was "good" (κ = 0.717 and κ = 0.736; p < 0.001). CONCLUSIONS: Our model is comparable to other Spanish models, but offers the advantage of being customized, updated and freely available on the web. The 30.6% of infants classified as SGA using our model would be considered as AGA following a non-customized model.

Video-EEG recordings in full-term neonates of diabetic mothers: observational study.

OBJECTIVE: To determine whether full-term newborn infants of diabetic mothers (IDM) present immature/disorganised EEG patterns in the immediate neonatal period, and whether there was any relationship with maternal glycaemic control. DESIGN AND SETTING: Cohort study with an incidental sample performed in a tertiary hospital neonatal unit. PATIENTS: 23 IDM and 22 healthy newborns born between 2010 and 2013. INTERVENTIONS: All underwent video-EEG recording lasting >90 min at 48-72 h of life. MAIN OUTCOME MEASURES: We analysed the percentage of indeterminate sleep, transient sharp waves per hour and mature-for-gestational age EEG patterns (discontinuity, maximum duration of interburst interval (IBI), asynchrony, asymmetry, δ brushes, encoches frontales and α/θ rolandic activity). The group of IDM was divided into two subgroups according to maternal HbA1c: (1) HbA1c≥6% and (2) HbA1c<6%. RESULTS: Compared with healthy newborns, IDM presented significantly higher percentage of indeterminate sleep (57% vs 25%; p<0.001), discontinuity (2.5% vs 0%; p=0.044) and δ brushes in the bursts (6% vs 3%; p=0.024); higher duration of IBI (0.3 s vs 0 s; p=0.017); fewer encoches frontales (7/h vs 35/h; p<0.001), reduced θ/α rolandic activity (3/h vs 9/h; p<0.001); and more transient sharp waves (25/h vs 5/h; p<0.001). IDM with maternal HbA1c≥6% showed greater percentage of δ brushes in the burst (14% vs 4%; p=0.007). CONCLUSIONS: Full-term IDM newborns showed video-EEG features of abnormal development of brain function. Maternal HbA1c levels<6% during pregnancy could minimise the risk of cerebral dysmaturity.

Effectiveness of a screening protocol for gestational diabetes in pregnant Spanish women.

OBJECTIVE: Screening for gestational diabetes mellitus (GDM) and its treatment can reduce health risks for the mother and child. This study estimated the prevalence of undetected GDM in Tenerife Island, to determine the rate of dropout from the diagnostic protocol and to identify the features of the protocol that reduced its effectiveness. METHODS: We calculated GDM prevalence and the breaches of the diagnostic protocol out of 12,084 pregnant women who started the GDM detection program during 2004-2006. The prevalence of protocol breaches was used to estimate overall prevalence of GDM for the study population. RESULTS: The overall prevalence of GDM was 6.4% (95% CI: 5.9-6.9%). Ten percent of them did not comply with the protocol. Noncompliant subjects were, on average, older (31.4 ± 5.7 vs. 30.0 ± 5.7 years, p < 0.001) and those with higher fasting blood glucose, 83 vs. 78 mg/dl (4.6 vs. 4.3 mmol/l) p < 0.001) than compliant subjects. About one third (30%) of the noncompliant women may be additional cases of GDM, which would increase the prevalence by 2.2% (95% CI: 1.9-2.5%) for an estimated total figure of 8.6% (95% CI: 8.1-9.1%). CONCLUSIONS: One out of every three cases of GDM may escape detection among women who do not complete the GDM screening protocol.

Factors influencing pregnancy outcome in women with type 2 versus type 1 diabetes mellitus.

AIM: To compare pregnancy outcome and factors related to adverse perinatal outcome in women with type 1 versus type 2 diabetes mellitus (DM). MATERIAL AND METHODS: Multicentre retrospective study. Some 404 women were studied, 257 with type 1 DM and 147 with type 2 DM. Main outcome measures were rates of prematurity, macrosomia, instrumental deliveries, congenital malformations, need for neonatal intensive care unit (NICU), and perinatal mortality. RESULTS: There were no significant differences in pregnancy outcome between women with type 1 and type 2 DM, except for an increased rate of instrumental deliveries in women with type 1 DM. In these women, duration of diabetes was a significant predictor of caesarean delivery (OR =1.06 (1.01-1.12); p=0.02). Chronic hypertension was positively related to prematurity (p=0.02), and proved to be a significant predictor of birth weight lower than 2,500 g (OR =3.54 (1.4-12.49); p=0.043) and perinatal mortality (OR =10.6 (1.15-117.6); p=0.04). In women with type 2 DM, third trimester higher glycosylated haemoglobin was related to both prematurity (OR 4.9 (1.7-14.4; p=0.004) and low birth weight. Macrosomia was a significant risk factor for caesarean section. First trimester glycosylated haemoglobin was related to congenital malformations and proved to be a significant predictor of perinatal mortality (OR =2.4 (1.02-5.74); p=0.04). CONCLUSIONS: Duration of DM and chronic hypertension were the most influential factors related to adverse perinatal outcomes in women with type 1 DM, and poor metabolic control and macrosomia in women with type 2 DM.